/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-ext/40_barrier_vf.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 22:18:05,227 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 22:18:05,311 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 22:18:05,316 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 22:18:05,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 22:18:05,341 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 22:18:05,341 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 22:18:05,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 22:18:05,342 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 22:18:05,343 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 22:18:05,343 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 22:18:05,343 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 22:18:05,344 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 22:18:05,344 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 22:18:05,344 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 22:18:05,345 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 22:18:05,345 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 22:18:05,345 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 22:18:05,346 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 22:18:05,346 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 22:18:05,346 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 22:18:05,350 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 22:18:05,350 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 22:18:05,351 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 22:18:05,354 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 22:18:05,354 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 22:18:05,355 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 22:18:05,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 22:18:05,355 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 22:18:05,355 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 22:18:05,356 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 22:18:05,356 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 22:18:05,357 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 22:18:05,357 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 22:18:05,357 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 22:18:05,357 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 22:18:05,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 22:18:05,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 22:18:05,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 22:18:05,701 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 22:18:05,702 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 22:18:05,703 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/40_barrier_vf.i [2023-08-25 22:18:07,002 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 22:18:07,311 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 22:18:07,312 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/40_barrier_vf.i [2023-08-25 22:18:07,329 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8695f4a70/a3f08e7b849c433fa532a354649d4211/FLAG9cba35bf1 [2023-08-25 22:18:07,344 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8695f4a70/a3f08e7b849c433fa532a354649d4211 [2023-08-25 22:18:07,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 22:18:07,347 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 22:18:07,348 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 22:18:07,348 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 22:18:07,350 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 22:18:07,351 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 10:18:07" (1/1) ... [2023-08-25 22:18:07,352 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd8fb50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:07, skipping insertion in model container [2023-08-25 22:18:07,352 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 10:18:07" (1/1) ... [2023-08-25 22:18:07,395 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 22:18:07,578 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-25 22:18:07,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 22:18:07,744 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 22:18:07,763 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-25 22:18:07,774 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [269] [2023-08-25 22:18:07,775 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [269] [2023-08-25 22:18:07,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 22:18:07,817 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 22:18:07,817 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 22:18:07,818 WARN L669 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 22:18:07,824 INFO L206 MainTranslator]: Completed translation [2023-08-25 22:18:07,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:07 WrapperNode [2023-08-25 22:18:07,824 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 22:18:07,825 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 22:18:07,826 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 22:18:07,826 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 22:18:07,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:07" (1/1) ... [2023-08-25 22:18:07,861 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:07" (1/1) ... [2023-08-25 22:18:07,889 INFO L138 Inliner]: procedures = 174, calls = 26, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 127 [2023-08-25 22:18:07,890 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 22:18:07,891 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 22:18:07,891 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 22:18:07,891 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 22:18:07,898 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:07" (1/1) ... [2023-08-25 22:18:07,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:07" (1/1) ... [2023-08-25 22:18:07,913 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:07" (1/1) ... [2023-08-25 22:18:07,914 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:07" (1/1) ... [2023-08-25 22:18:07,918 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:07" (1/1) ... [2023-08-25 22:18:07,921 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:07" (1/1) ... [2023-08-25 22:18:07,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:07" (1/1) ... [2023-08-25 22:18:07,923 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:07" (1/1) ... [2023-08-25 22:18:07,932 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 22:18:07,933 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 22:18:07,933 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 22:18:07,934 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 22:18:07,934 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:07" (1/1) ... [2023-08-25 22:18:07,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 22:18:07,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 22:18:07,961 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 22:18:07,981 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 22:18:08,011 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-25 22:18:08,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-25 22:18:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 22:18:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 22:18:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 22:18:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 22:18:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 22:18:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 22:18:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 22:18:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 22:18:08,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 22:18:08,015 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 22:18:08,157 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 22:18:08,158 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 22:18:08,317 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 22:18:08,437 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 22:18:08,437 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 22:18:08,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 10:18:08 BoogieIcfgContainer [2023-08-25 22:18:08,439 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 22:18:08,441 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 22:18:08,441 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 22:18:08,444 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 22:18:08,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 10:18:07" (1/3) ... [2023-08-25 22:18:08,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ce588c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 10:18:08, skipping insertion in model container [2023-08-25 22:18:08,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:07" (2/3) ... [2023-08-25 22:18:08,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ce588c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 10:18:08, skipping insertion in model container [2023-08-25 22:18:08,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 10:18:08" (3/3) ... [2023-08-25 22:18:08,446 INFO L112 eAbstractionObserver]: Analyzing ICFG 40_barrier_vf.i [2023-08-25 22:18:08,460 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 22:18:08,460 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-25 22:18:08,461 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 22:18:08,509 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 22:18:08,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 80 transitions, 165 flow [2023-08-25 22:18:08,569 INFO L124 PetriNetUnfolderBase]: 5/90 cut-off events. [2023-08-25 22:18:08,570 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:18:08,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 90 events. 5/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 65. Up to 4 conditions per place. [2023-08-25 22:18:08,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 80 transitions, 165 flow [2023-08-25 22:18:08,578 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 80 transitions, 165 flow [2023-08-25 22:18:08,581 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 22:18:08,588 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 80 transitions, 165 flow [2023-08-25 22:18:08,590 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 80 transitions, 165 flow [2023-08-25 22:18:08,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 80 transitions, 165 flow [2023-08-25 22:18:08,609 INFO L124 PetriNetUnfolderBase]: 5/90 cut-off events. [2023-08-25 22:18:08,609 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:18:08,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 90 events. 5/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 65. Up to 4 conditions per place. [2023-08-25 22:18:08,611 INFO L119 LiptonReduction]: Number of co-enabled transitions 1378 [2023-08-25 22:18:11,284 INFO L134 LiptonReduction]: Checked pairs total: 1620 [2023-08-25 22:18:11,285 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-08-25 22:18:11,305 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 22:18:11,311 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;@678ac4a4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 22:18:11,311 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-08-25 22:18:11,314 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 22:18:11,314 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-25 22:18:11,314 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:18:11,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:11,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 22:18:11,315 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT (and 28 more)] === [2023-08-25 22:18:11,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:11,319 INFO L85 PathProgramCache]: Analyzing trace with hash 16456110, now seen corresponding path program 1 times [2023-08-25 22:18:11,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:11,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764866908] [2023-08-25 22:18:11,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:11,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:11,459 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 22:18:11,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:11,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764866908] [2023-08-25 22:18:11,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764866908] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:11,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:11,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 22:18:11,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985818383] [2023-08-25 22:18:11,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:11,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 22:18:11,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:11,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 22:18:11,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 22:18:11,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 193 [2023-08-25 22:18:11,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 51 flow. Second operand has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 22:18:11,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:11,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 193 [2023-08-25 22:18:11,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:11,510 INFO L124 PetriNetUnfolderBase]: 2/12 cut-off events. [2023-08-25 22:18:11,510 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:18:11,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 12 events. 2/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 2 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 14. Up to 11 conditions per place. [2023-08-25 22:18:11,511 INFO L140 encePairwiseOnDemand]: 176/193 looper letters, 5 selfloop transitions, 0 changer transitions 0/6 dead transitions. [2023-08-25 22:18:11,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 27 flow [2023-08-25 22:18:11,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 22:18:11,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 22:18:11,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 132 transitions. [2023-08-25 22:18:11,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34196891191709844 [2023-08-25 22:18:11,526 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 132 transitions. [2023-08-25 22:18:11,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 132 transitions. [2023-08-25 22:18:11,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:11,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 132 transitions. [2023-08-25 22:18:11,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 22:18:11,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states 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 22:18:11,540 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states 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 22:18:11,542 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 51 flow. Second operand 2 states and 132 transitions. [2023-08-25 22:18:11,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 27 flow [2023-08-25 22:18:11,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 27 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 22:18:11,545 INFO L231 Difference]: Finished difference. Result has 10 places, 6 transitions, 17 flow [2023-08-25 22:18:11,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=17, PETRI_PLACES=10, PETRI_TRANSITIONS=6} [2023-08-25 22:18:11,552 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -16 predicate places. [2023-08-25 22:18:11,552 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 6 transitions, 17 flow [2023-08-25 22:18:11,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 22:18:11,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:11,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 22:18:11,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 22:18:11,554 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err15ASSERT_VIOLATIONASSERT === [thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT (and 28 more)] === [2023-08-25 22:18:11,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:11,554 INFO L85 PathProgramCache]: Analyzing trace with hash 16456166, now seen corresponding path program 1 times [2023-08-25 22:18:11,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:11,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596984192] [2023-08-25 22:18:11,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:11,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:11,789 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 22:18:11,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:11,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596984192] [2023-08-25 22:18:11,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596984192] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:11,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:11,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 22:18:11,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364520239] [2023-08-25 22:18:11,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:11,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:11,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:11,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:11,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:11,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 193 [2023-08-25 22:18:11,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 10 places, 6 transitions, 17 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 22:18:11,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:11,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 193 [2023-08-25 22:18:11,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:11,800 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-25 22:18:11,800 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:18:11,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 6 events. 0/6 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 3/9 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2023-08-25 22:18:11,800 INFO L140 encePairwiseOnDemand]: 191/193 looper letters, 0 selfloop transitions, 0 changer transitions 5/5 dead transitions. [2023-08-25 22:18:11,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 5 transitions, 23 flow [2023-08-25 22:18:11,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:11,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:11,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2023-08-25 22:18:11,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25734024179620035 [2023-08-25 22:18:11,802 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2023-08-25 22:18:11,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2023-08-25 22:18:11,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:11,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2023-08-25 22:18:11,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 22:18:11,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states 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 22:18:11,805 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states 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 22:18:11,805 INFO L175 Difference]: Start difference. First operand has 10 places, 6 transitions, 17 flow. Second operand 3 states and 149 transitions. [2023-08-25 22:18:11,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 5 transitions, 23 flow [2023-08-25 22:18:11,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 5 transitions, 23 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 22:18:11,806 INFO L231 Difference]: Finished difference. Result has 11 places, 0 transitions, 0 flow [2023-08-25 22:18:11,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=15, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=11, PETRI_TRANSITIONS=0} [2023-08-25 22:18:11,807 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -15 predicate places. [2023-08-25 22:18:11,807 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 0 transitions, 0 flow [2023-08-25 22:18:11,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 22:18:11,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err13ASSERT_VIOLATIONDATA_RACE (31 of 32 remaining) [2023-08-25 22:18:11,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err14ASSERT_VIOLATIONDATA_RACE (30 of 32 remaining) [2023-08-25 22:18:11,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (29 of 32 remaining) [2023-08-25 22:18:11,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err15ASSERT_VIOLATIONASSERT (28 of 32 remaining) [2023-08-25 22:18:11,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err12ASSERT_VIOLATIONDATA_RACE (27 of 32 remaining) [2023-08-25 22:18:11,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (26 of 32 remaining) [2023-08-25 22:18:11,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err11ASSERT_VIOLATIONDATA_RACE (25 of 32 remaining) [2023-08-25 22:18:11,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (24 of 32 remaining) [2023-08-25 22:18:11,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err14ASSERT_VIOLATIONDATA_RACE (23 of 32 remaining) [2023-08-25 22:18:11,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 32 remaining) [2023-08-25 22:18:11,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err11ASSERT_VIOLATIONDATA_RACE (21 of 32 remaining) [2023-08-25 22:18:11,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONDATA_RACE (20 of 32 remaining) [2023-08-25 22:18:11,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 32 remaining) [2023-08-25 22:18:11,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err12ASSERT_VIOLATIONDATA_RACE (18 of 32 remaining) [2023-08-25 22:18:11,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (17 of 32 remaining) [2023-08-25 22:18:11,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err13ASSERT_VIOLATIONDATA_RACE (16 of 32 remaining) [2023-08-25 22:18:11,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (15 of 32 remaining) [2023-08-25 22:18:11,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (14 of 32 remaining) [2023-08-25 22:18:11,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 32 remaining) [2023-08-25 22:18:11,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONDATA_RACE (12 of 32 remaining) [2023-08-25 22:18:11,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONDATA_RACE (11 of 32 remaining) [2023-08-25 22:18:11,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (10 of 32 remaining) [2023-08-25 22:18:11,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err15ASSERT_VIOLATIONASSERT (9 of 32 remaining) [2023-08-25 22:18:11,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err10ASSERT_VIOLATIONDATA_RACE (8 of 32 remaining) [2023-08-25 22:18:11,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONDATA_RACE (7 of 32 remaining) [2023-08-25 22:18:11,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 32 remaining) [2023-08-25 22:18:11,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 32 remaining) [2023-08-25 22:18:11,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 32 remaining) [2023-08-25 22:18:11,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 32 remaining) [2023-08-25 22:18:11,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 32 remaining) [2023-08-25 22:18:11,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err10ASSERT_VIOLATIONDATA_RACE (1 of 32 remaining) [2023-08-25 22:18:11,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 32 remaining) [2023-08-25 22:18:11,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 22:18:11,816 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-25 22:18:11,818 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-25 22:18:11,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 80 transitions, 165 flow [2023-08-25 22:18:11,834 INFO L124 PetriNetUnfolderBase]: 5/90 cut-off events. [2023-08-25 22:18:11,834 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:18:11,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 90 events. 5/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 65. Up to 4 conditions per place. [2023-08-25 22:18:11,835 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 80 transitions, 165 flow [2023-08-25 22:18:11,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 80 transitions, 165 flow [2023-08-25 22:18:11,836 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 22:18:11,836 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 80 transitions, 165 flow [2023-08-25 22:18:11,836 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 80 transitions, 165 flow [2023-08-25 22:18:11,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 80 transitions, 165 flow [2023-08-25 22:18:11,851 INFO L124 PetriNetUnfolderBase]: 5/90 cut-off events. [2023-08-25 22:18:11,851 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:18:11,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 90 events. 5/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 65. Up to 4 conditions per place. [2023-08-25 22:18:11,853 INFO L119 LiptonReduction]: Number of co-enabled transitions 1378 [2023-08-25 22:18:14,117 INFO L134 LiptonReduction]: Checked pairs total: 1484 [2023-08-25 22:18:14,118 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-08-25 22:18:14,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 22:18:14,120 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;@678ac4a4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 22:18:14,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-25 22:18:14,124 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 22:18:14,124 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2023-08-25 22:18:14,124 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:18:14,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:14,124 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-25 22:18:14,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 22:18:14,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:14,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1765272057, now seen corresponding path program 1 times [2023-08-25 22:18:14,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:14,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428466855] [2023-08-25 22:18:14,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:14,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:18:14,156 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 22:18:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:18:14,192 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 22:18:14,192 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 22:18:14,192 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-25 22:18:14,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 22:18:14,192 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 22:18:14,193 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-25 22:18:14,193 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 22:18:14,193 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 22:18:14,222 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 22:18:14,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 134 transitions, 280 flow [2023-08-25 22:18:14,265 INFO L124 PetriNetUnfolderBase]: 9/156 cut-off events. [2023-08-25 22:18:14,266 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 22:18:14,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 156 events. 9/156 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 390 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 118. Up to 6 conditions per place. [2023-08-25 22:18:14,270 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 134 transitions, 280 flow [2023-08-25 22:18:14,272 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 134 transitions, 280 flow [2023-08-25 22:18:14,273 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 22:18:14,273 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 134 transitions, 280 flow [2023-08-25 22:18:14,273 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 134 transitions, 280 flow [2023-08-25 22:18:14,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 134 transitions, 280 flow [2023-08-25 22:18:14,304 INFO L124 PetriNetUnfolderBase]: 9/156 cut-off events. [2023-08-25 22:18:14,304 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 22:18:14,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 156 events. 9/156 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 390 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 118. Up to 6 conditions per place. [2023-08-25 22:18:14,310 INFO L119 LiptonReduction]: Number of co-enabled transitions 8480 [2023-08-25 22:18:15,328 INFO L134 LiptonReduction]: Checked pairs total: 38882 [2023-08-25 22:18:15,329 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-25 22:18:15,330 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 22:18:15,331 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;@678ac4a4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 22:18:15,331 INFO L358 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2023-08-25 22:18:15,333 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 22:18:15,333 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-25 22:18:15,333 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:18:15,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:15,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 22:18:15,333 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err12ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT (and 44 more)] === [2023-08-25 22:18:15,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:15,333 INFO L85 PathProgramCache]: Analyzing trace with hash 28772789, now seen corresponding path program 1 times [2023-08-25 22:18:15,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:15,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522125875] [2023-08-25 22:18:15,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:15,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:15,347 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 22:18:15,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:15,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522125875] [2023-08-25 22:18:15,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522125875] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:15,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:15,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 22:18:15,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391737630] [2023-08-25 22:18:15,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:15,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 22:18:15,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:15,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 22:18:15,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 22:18:15,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 221 [2023-08-25 22:18:15,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 80 transitions, 172 flow. Second operand has 2 states, 2 states have (on average 88.0) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 22:18:15,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:15,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 221 [2023-08-25 22:18:15,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:15,457 INFO L124 PetriNetUnfolderBase]: 457/1005 cut-off events. [2023-08-25 22:18:15,458 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-08-25 22:18:15,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1826 conditions, 1005 events. 457/1005 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 6092 event pairs, 407 based on Foata normal form. 0/914 useless extension candidates. Maximal degree in co-relation 1206. Up to 772 conditions per place. [2023-08-25 22:18:15,464 INFO L140 encePairwiseOnDemand]: 196/221 looper letters, 28 selfloop transitions, 0 changer transitions 0/55 dead transitions. [2023-08-25 22:18:15,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 55 transitions, 178 flow [2023-08-25 22:18:15,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 22:18:15,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 22:18:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 225 transitions. [2023-08-25 22:18:15,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5090497737556561 [2023-08-25 22:18:15,472 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 225 transitions. [2023-08-25 22:18:15,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 225 transitions. [2023-08-25 22:18:15,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:15,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 225 transitions. [2023-08-25 22:18:15,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 112.5) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 22:18:15,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states 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 22:18:15,476 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states 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 22:18:15,476 INFO L175 Difference]: Start difference. First operand has 83 places, 80 transitions, 172 flow. Second operand 2 states and 225 transitions. [2023-08-25 22:18:15,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 55 transitions, 178 flow [2023-08-25 22:18:15,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 176 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-25 22:18:15,478 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 120 flow [2023-08-25 22:18:15,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=120, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2023-08-25 22:18:15,480 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -24 predicate places. [2023-08-25 22:18:15,480 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 120 flow [2023-08-25 22:18:15,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 88.0) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 22:18:15,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:15,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-25 22:18:15,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 22:18:15,481 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err12ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT (and 44 more)] === [2023-08-25 22:18:15,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:15,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1880872183, now seen corresponding path program 1 times [2023-08-25 22:18:15,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:15,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76745543] [2023-08-25 22:18:15,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:15,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:15,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 22:18:15,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:15,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76745543] [2023-08-25 22:18:15,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76745543] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:15,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:15,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:18:15,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474190680] [2023-08-25 22:18:15,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:15,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:15,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:15,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:15,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:15,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 221 [2023-08-25 22:18:15,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 22:18:15,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:15,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 221 [2023-08-25 22:18:15,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:15,842 INFO L124 PetriNetUnfolderBase]: 1626/3035 cut-off events. [2023-08-25 22:18:15,842 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-08-25 22:18:15,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5916 conditions, 3035 events. 1626/3035 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 20943 event pairs, 581 based on Foata normal form. 0/2643 useless extension candidates. Maximal degree in co-relation 5911. Up to 1633 conditions per place. [2023-08-25 22:18:15,858 INFO L140 encePairwiseOnDemand]: 205/221 looper letters, 72 selfloop transitions, 12 changer transitions 0/94 dead transitions. [2023-08-25 22:18:15,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 94 transitions, 371 flow [2023-08-25 22:18:15,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:15,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:15,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 274 transitions. [2023-08-25 22:18:15,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132730015082956 [2023-08-25 22:18:15,860 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 274 transitions. [2023-08-25 22:18:15,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 274 transitions. [2023-08-25 22:18:15,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:15,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 274 transitions. [2023-08-25 22:18:15,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states 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 22:18:15,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states 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 22:18:15,863 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states 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 22:18:15,863 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 120 flow. Second operand 3 states and 274 transitions. [2023-08-25 22:18:15,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 94 transitions, 371 flow [2023-08-25 22:18:15,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 94 transitions, 371 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 22:18:15,866 INFO L231 Difference]: Finished difference. Result has 63 places, 67 transitions, 224 flow [2023-08-25 22:18:15,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=63, PETRI_TRANSITIONS=67} [2023-08-25 22:18:15,866 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -20 predicate places. [2023-08-25 22:18:15,867 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 67 transitions, 224 flow [2023-08-25 22:18:15,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 22:18:15,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:15,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:15,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 22:18:15,867 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err12ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT (and 44 more)] === [2023-08-25 22:18:15,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:15,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1524197730, now seen corresponding path program 1 times [2023-08-25 22:18:15,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:15,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409625231] [2023-08-25 22:18:15,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:15,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:15,914 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 22:18:15,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:15,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409625231] [2023-08-25 22:18:15,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409625231] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:15,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:15,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:18:15,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740615487] [2023-08-25 22:18:15,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:15,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:15,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:15,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:15,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:15,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 221 [2023-08-25 22:18:15,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 67 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 22:18:15,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:15,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 221 [2023-08-25 22:18:15,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:16,207 INFO L124 PetriNetUnfolderBase]: 1681/3106 cut-off events. [2023-08-25 22:18:16,208 INFO L125 PetriNetUnfolderBase]: For 976/984 co-relation queries the response was YES. [2023-08-25 22:18:16,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7181 conditions, 3106 events. 1681/3106 cut-off events. For 976/984 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 21251 event pairs, 1219 based on Foata normal form. 4/2791 useless extension candidates. Maximal degree in co-relation 7174. Up to 2596 conditions per place. [2023-08-25 22:18:16,227 INFO L140 encePairwiseOnDemand]: 213/221 looper letters, 75 selfloop transitions, 11 changer transitions 0/96 dead transitions. [2023-08-25 22:18:16,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 96 transitions, 501 flow [2023-08-25 22:18:16,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:16,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:16,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2023-08-25 22:18:16,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37254901960784315 [2023-08-25 22:18:16,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2023-08-25 22:18:16,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2023-08-25 22:18:16,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:16,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2023-08-25 22:18:16,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states 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 22:18:16,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states 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 22:18:16,231 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states 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 22:18:16,231 INFO L175 Difference]: Start difference. First operand has 63 places, 67 transitions, 224 flow. Second operand 3 states and 247 transitions. [2023-08-25 22:18:16,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 96 transitions, 501 flow [2023-08-25 22:18:16,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 96 transitions, 463 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:18:16,238 INFO L231 Difference]: Finished difference. Result has 65 places, 76 transitions, 298 flow [2023-08-25 22:18:16,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=65, PETRI_TRANSITIONS=76} [2023-08-25 22:18:16,239 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -18 predicate places. [2023-08-25 22:18:16,239 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 76 transitions, 298 flow [2023-08-25 22:18:16,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 22:18:16,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:16,239 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:16,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 22:18:16,240 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err12ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT (and 44 more)] === [2023-08-25 22:18:16,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:16,240 INFO L85 PathProgramCache]: Analyzing trace with hash 866769392, now seen corresponding path program 1 times [2023-08-25 22:18:16,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:16,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330354914] [2023-08-25 22:18:16,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:16,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:16,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 22:18:16,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:16,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330354914] [2023-08-25 22:18:16,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330354914] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:16,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:16,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:18:16,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39348914] [2023-08-25 22:18:16,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:16,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:16,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:16,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:16,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:16,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 221 [2023-08-25 22:18:16,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 76 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 22:18:16,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:16,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 221 [2023-08-25 22:18:16,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:16,587 INFO L124 PetriNetUnfolderBase]: 1723/3192 cut-off events. [2023-08-25 22:18:16,587 INFO L125 PetriNetUnfolderBase]: For 1312/1328 co-relation queries the response was YES. [2023-08-25 22:18:16,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7676 conditions, 3192 events. 1723/3192 cut-off events. For 1312/1328 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 21984 event pairs, 1206 based on Foata normal form. 4/2882 useless extension candidates. Maximal degree in co-relation 7668. Up to 2651 conditions per place. [2023-08-25 22:18:16,606 INFO L140 encePairwiseOnDemand]: 213/221 looper letters, 83 selfloop transitions, 15 changer transitions 0/108 dead transitions. [2023-08-25 22:18:16,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 108 transitions, 618 flow [2023-08-25 22:18:16,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:16,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:16,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2023-08-25 22:18:16,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37254901960784315 [2023-08-25 22:18:16,608 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2023-08-25 22:18:16,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2023-08-25 22:18:16,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:16,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2023-08-25 22:18:16,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states 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 22:18:16,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states 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 22:18:16,610 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states 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 22:18:16,610 INFO L175 Difference]: Start difference. First operand has 65 places, 76 transitions, 298 flow. Second operand 3 states and 247 transitions. [2023-08-25 22:18:16,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 108 transitions, 618 flow [2023-08-25 22:18:16,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 108 transitions, 586 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:18:16,620 INFO L231 Difference]: Finished difference. Result has 67 places, 87 transitions, 414 flow [2023-08-25 22:18:16,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=414, PETRI_PLACES=67, PETRI_TRANSITIONS=87} [2023-08-25 22:18:16,621 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -16 predicate places. [2023-08-25 22:18:16,621 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 87 transitions, 414 flow [2023-08-25 22:18:16,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 22:18:16,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:16,621 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:16,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 22:18:16,622 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err12ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT (and 44 more)] === [2023-08-25 22:18:16,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:16,622 INFO L85 PathProgramCache]: Analyzing trace with hash 179239174, now seen corresponding path program 1 times [2023-08-25 22:18:16,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:16,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973491191] [2023-08-25 22:18:16,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:16,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 22:18:16,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:16,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973491191] [2023-08-25 22:18:16,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973491191] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:16,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:16,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:18:16,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363815750] [2023-08-25 22:18:16,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:16,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:16,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:16,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:16,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:16,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 221 [2023-08-25 22:18:16,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 87 transitions, 414 flow. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states 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 22:18:16,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:16,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 221 [2023-08-25 22:18:16,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:16,818 INFO L124 PetriNetUnfolderBase]: 255/726 cut-off events. [2023-08-25 22:18:16,818 INFO L125 PetriNetUnfolderBase]: For 230/230 co-relation queries the response was YES. [2023-08-25 22:18:16,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1593 conditions, 726 events. 255/726 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4454 event pairs, 65 based on Foata normal form. 64/766 useless extension candidates. Maximal degree in co-relation 1584. Up to 346 conditions per place. [2023-08-25 22:18:16,822 INFO L140 encePairwiseOnDemand]: 213/221 looper letters, 26 selfloop transitions, 8 changer transitions 0/57 dead transitions. [2023-08-25 22:18:16,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 257 flow [2023-08-25 22:18:16,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:16,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:16,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 293 transitions. [2023-08-25 22:18:16,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419306184012066 [2023-08-25 22:18:16,824 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 293 transitions. [2023-08-25 22:18:16,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 293 transitions. [2023-08-25 22:18:16,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:16,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 293 transitions. [2023-08-25 22:18:16,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 22:18:16,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states 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 22:18:16,827 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states 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 22:18:16,828 INFO L175 Difference]: Start difference. First operand has 67 places, 87 transitions, 414 flow. Second operand 3 states and 293 transitions. [2023-08-25 22:18:16,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 257 flow [2023-08-25 22:18:16,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 217 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-08-25 22:18:16,830 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 148 flow [2023-08-25 22:18:16,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-08-25 22:18:16,831 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -26 predicate places. [2023-08-25 22:18:16,831 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 148 flow [2023-08-25 22:18:16,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states 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 22:18:16,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:16,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:16,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 22:18:16,832 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err12ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT (and 44 more)] === [2023-08-25 22:18:16,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:16,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1792138980, now seen corresponding path program 1 times [2023-08-25 22:18:16,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:16,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784820810] [2023-08-25 22:18:16,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:16,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:16,858 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 22:18:16,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:16,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784820810] [2023-08-25 22:18:16,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784820810] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:16,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:16,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:18:16,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713188854] [2023-08-25 22:18:16,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:16,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:16,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:16,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:16,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:16,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 221 [2023-08-25 22:18:16,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 22:18:16,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:16,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 221 [2023-08-25 22:18:16,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:16,960 INFO L124 PetriNetUnfolderBase]: 355/812 cut-off events. [2023-08-25 22:18:16,960 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2023-08-25 22:18:16,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1820 conditions, 812 events. 355/812 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4697 event pairs, 316 based on Foata normal form. 0/777 useless extension candidates. Maximal degree in co-relation 1813. Up to 705 conditions per place. [2023-08-25 22:18:16,964 INFO L140 encePairwiseOnDemand]: 218/221 looper letters, 42 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-08-25 22:18:16,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 247 flow [2023-08-25 22:18:16,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:16,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:16,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2023-08-25 22:18:16,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33182503770739064 [2023-08-25 22:18:16,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions. [2023-08-25 22:18:16,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions. [2023-08-25 22:18:16,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:16,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions. [2023-08-25 22:18:16,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 22:18:16,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states 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 22:18:16,970 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states 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 22:18:16,970 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 148 flow. Second operand 3 states and 220 transitions. [2023-08-25 22:18:16,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 247 flow [2023-08-25 22:18:16,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 239 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:18:16,972 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 142 flow [2023-08-25 22:18:16,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2023-08-25 22:18:16,974 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -26 predicate places. [2023-08-25 22:18:16,974 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 142 flow [2023-08-25 22:18:16,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 22:18:16,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:16,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:16,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 22:18:16,975 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err15ASSERT_VIOLATIONASSERT === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err12ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT (and 44 more)] === [2023-08-25 22:18:16,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:16,975 INFO L85 PathProgramCache]: Analyzing trace with hash -278264058, now seen corresponding path program 1 times [2023-08-25 22:18:16,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:16,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903674879] [2023-08-25 22:18:16,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:16,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:17,084 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 22:18:17,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:17,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903674879] [2023-08-25 22:18:17,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903674879] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:17,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:17,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 22:18:17,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832489728] [2023-08-25 22:18:17,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:17,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 22:18:17,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:17,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 22:18:17,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 22:18:17,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 221 [2023-08-25 22:18:17,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 22:18:17,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:17,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 221 [2023-08-25 22:18:17,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:17,237 INFO L124 PetriNetUnfolderBase]: 314/760 cut-off events. [2023-08-25 22:18:17,237 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-08-25 22:18:17,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1624 conditions, 760 events. 314/760 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4421 event pairs, 81 based on Foata normal form. 0/737 useless extension candidates. Maximal degree in co-relation 1616. Up to 370 conditions per place. [2023-08-25 22:18:17,241 INFO L140 encePairwiseOnDemand]: 213/221 looper letters, 56 selfloop transitions, 8 changer transitions 0/79 dead transitions. [2023-08-25 22:18:17,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 79 transitions, 354 flow [2023-08-25 22:18:17,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 22:18:17,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 22:18:17,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 503 transitions. [2023-08-25 22:18:17,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793363499245852 [2023-08-25 22:18:17,243 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 503 transitions. [2023-08-25 22:18:17,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 503 transitions. [2023-08-25 22:18:17,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:17,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 503 transitions. [2023-08-25 22:18:17,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states 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 22:18:17,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 221.0) internal successors, (1547), 7 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states 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 22:18:17,247 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 221.0) internal successors, (1547), 7 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states 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 22:18:17,247 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 142 flow. Second operand 6 states and 503 transitions. [2023-08-25 22:18:17,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 79 transitions, 354 flow [2023-08-25 22:18:17,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 79 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:18:17,251 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 181 flow [2023-08-25 22:18:17,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=181, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2023-08-25 22:18:17,252 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -19 predicate places. [2023-08-25 22:18:17,252 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 181 flow [2023-08-25 22:18:17,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 22:18:17,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:17,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:17,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 22:18:17,253 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err15ASSERT_VIOLATIONASSERT === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err12ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT (and 44 more)] === [2023-08-25 22:18:17,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:17,253 INFO L85 PathProgramCache]: Analyzing trace with hash -248177659, now seen corresponding path program 1 times [2023-08-25 22:18:17,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:17,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299209196] [2023-08-25 22:18:17,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:17,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:17,369 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 22:18:17,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:17,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299209196] [2023-08-25 22:18:17,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299209196] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:17,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:17,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:18:17,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611791296] [2023-08-25 22:18:17,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:17,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:17,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:17,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:17,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:17,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 221 [2023-08-25 22:18:17,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states 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 22:18:17,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:17,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 221 [2023-08-25 22:18:17,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:17,444 INFO L124 PetriNetUnfolderBase]: 97/327 cut-off events. [2023-08-25 22:18:17,445 INFO L125 PetriNetUnfolderBase]: For 86/87 co-relation queries the response was YES. [2023-08-25 22:18:17,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 729 conditions, 327 events. 97/327 cut-off events. For 86/87 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1526 event pairs, 55 based on Foata normal form. 27/345 useless extension candidates. Maximal degree in co-relation 717. Up to 141 conditions per place. [2023-08-25 22:18:17,446 INFO L140 encePairwiseOnDemand]: 214/221 looper letters, 38 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2023-08-25 22:18:17,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 66 transitions, 310 flow [2023-08-25 22:18:17,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:17,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:17,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-25 22:18:17,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479638009049774 [2023-08-25 22:18:17,449 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-25 22:18:17,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-25 22:18:17,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:17,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-25 22:18:17,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states 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 22:18:17,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states 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 22:18:17,452 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states 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 22:18:17,452 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 181 flow. Second operand 3 states and 297 transitions. [2023-08-25 22:18:17,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 66 transitions, 310 flow [2023-08-25 22:18:17,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 66 transitions, 304 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:18:17,454 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 195 flow [2023-08-25 22:18:17,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2023-08-25 22:18:17,455 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -17 predicate places. [2023-08-25 22:18:17,455 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 195 flow [2023-08-25 22:18:17,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states 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 22:18:17,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:17,455 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:17,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-25 22:18:17,456 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err12ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT (and 44 more)] === [2023-08-25 22:18:17,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:17,456 INFO L85 PathProgramCache]: Analyzing trace with hash 804377814, now seen corresponding path program 1 times [2023-08-25 22:18:17,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:17,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435557337] [2023-08-25 22:18:17,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:17,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:17,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 22:18:17,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:17,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435557337] [2023-08-25 22:18:17,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435557337] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:17,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:17,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:18:17,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698308936] [2023-08-25 22:18:17,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:17,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:17,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:17,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:17,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:17,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 221 [2023-08-25 22:18:17,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 195 flow. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 22:18:17,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:17,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 221 [2023-08-25 22:18:17,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:17,566 INFO L124 PetriNetUnfolderBase]: 132/369 cut-off events. [2023-08-25 22:18:17,566 INFO L125 PetriNetUnfolderBase]: For 120/121 co-relation queries the response was YES. [2023-08-25 22:18:17,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 369 events. 132/369 cut-off events. For 120/121 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1759 event pairs, 120 based on Foata normal form. 1/361 useless extension candidates. Maximal degree in co-relation 916. Up to 305 conditions per place. [2023-08-25 22:18:17,568 INFO L140 encePairwiseOnDemand]: 218/221 looper letters, 43 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-08-25 22:18:17,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 56 transitions, 294 flow [2023-08-25 22:18:17,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:17,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:17,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2023-08-25 22:18:17,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3288084464555053 [2023-08-25 22:18:17,570 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2023-08-25 22:18:17,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2023-08-25 22:18:17,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:17,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2023-08-25 22:18:17,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 22:18:17,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states 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 22:18:17,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states 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 22:18:17,573 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 195 flow. Second operand 3 states and 218 transitions. [2023-08-25 22:18:17,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 56 transitions, 294 flow [2023-08-25 22:18:17,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 56 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:18:17,575 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 187 flow [2023-08-25 22:18:17,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2023-08-25 22:18:17,576 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -18 predicate places. [2023-08-25 22:18:17,576 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 187 flow [2023-08-25 22:18:17,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 22:18:17,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:17,576 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:17,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-25 22:18:17,577 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err15ASSERT_VIOLATIONASSERT === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err12ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT (and 44 more)] === [2023-08-25 22:18:17,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:17,577 INFO L85 PathProgramCache]: Analyzing trace with hash -834087317, now seen corresponding path program 1 times [2023-08-25 22:18:17,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:17,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308339620] [2023-08-25 22:18:17,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:17,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:17,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 22:18:17,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:17,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308339620] [2023-08-25 22:18:17,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308339620] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:17,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:17,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 22:18:17,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933822133] [2023-08-25 22:18:17,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:17,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 22:18:17,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:17,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 22:18:17,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 22:18:17,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 221 [2023-08-25 22:18:17,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 22:18:17,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:17,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 221 [2023-08-25 22:18:17,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:17,762 INFO L124 PetriNetUnfolderBase]: 105/296 cut-off events. [2023-08-25 22:18:17,762 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2023-08-25 22:18:17,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 296 events. 105/296 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1279 event pairs, 31 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 717. Up to 125 conditions per place. [2023-08-25 22:18:17,764 INFO L140 encePairwiseOnDemand]: 213/221 looper letters, 45 selfloop transitions, 8 changer transitions 2/69 dead transitions. [2023-08-25 22:18:17,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 345 flow [2023-08-25 22:18:17,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 22:18:17,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 22:18:17,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 493 transitions. [2023-08-25 22:18:17,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3717948717948718 [2023-08-25 22:18:17,766 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 493 transitions. [2023-08-25 22:18:17,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 493 transitions. [2023-08-25 22:18:17,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:17,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 493 transitions. [2023-08-25 22:18:17,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.16666666666667) internal successors, (493), 6 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:18:17,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 221.0) internal successors, (1547), 7 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states 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 22:18:17,770 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 221.0) internal successors, (1547), 7 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states 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 22:18:17,770 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 187 flow. Second operand 6 states and 493 transitions. [2023-08-25 22:18:17,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 345 flow [2023-08-25 22:18:17,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 69 transitions, 341 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:18:17,772 INFO L231 Difference]: Finished difference. Result has 71 places, 55 transitions, 218 flow [2023-08-25 22:18:17,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=71, PETRI_TRANSITIONS=55} [2023-08-25 22:18:17,773 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -12 predicate places. [2023-08-25 22:18:17,773 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 218 flow [2023-08-25 22:18:17,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 22:18:17,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:17,773 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 22:18:17,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-25 22:18:17,774 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err15ASSERT_VIOLATIONASSERT === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err12ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT (and 44 more)] === [2023-08-25 22:18:17,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:17,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1374706304, now seen corresponding path program 1 times [2023-08-25 22:18:17,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:17,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435660231] [2023-08-25 22:18:17,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:17,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 22:18:17,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:17,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435660231] [2023-08-25 22:18:17,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435660231] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 22:18:17,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863918359] [2023-08-25 22:18:17,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:17,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 22:18:17,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 22:18:17,897 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 22:18:17,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 22:18:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:17,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-25 22:18:17,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 22:18:18,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 22:18:18,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 22:18:18,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 22:18:18,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863918359] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 22:18:18,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 22:18:18,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-25 22:18:18,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551247853] [2023-08-25 22:18:18,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 22:18:18,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 22:18:18,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:18,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 22:18:18,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-08-25 22:18:18,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 221 [2023-08-25 22:18:18,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 218 flow. Second operand has 13 states, 13 states have (on average 74.3076923076923) internal successors, (966), 13 states have internal predecessors, (966), 0 states have call successors, (0), 0 states 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 22:18:18,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:18,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 221 [2023-08-25 22:18:18,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:18,473 INFO L124 PetriNetUnfolderBase]: 69/225 cut-off events. [2023-08-25 22:18:18,473 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2023-08-25 22:18:18,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 225 events. 69/225 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 886 event pairs, 15 based on Foata normal form. 2/224 useless extension candidates. Maximal degree in co-relation 566. Up to 61 conditions per place. [2023-08-25 22:18:18,475 INFO L140 encePairwiseOnDemand]: 210/221 looper letters, 25 selfloop transitions, 7 changer transitions 27/71 dead transitions. [2023-08-25 22:18:18,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 71 transitions, 376 flow [2023-08-25 22:18:18,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 22:18:18,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 22:18:18,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 981 transitions. [2023-08-25 22:18:18,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3414549251653324 [2023-08-25 22:18:18,479 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 981 transitions. [2023-08-25 22:18:18,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 981 transitions. [2023-08-25 22:18:18,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:18,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 981 transitions. [2023-08-25 22:18:18,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.46153846153847) internal successors, (981), 13 states have internal predecessors, (981), 0 states have call successors, (0), 0 states 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 22:18:18,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 221.0) internal successors, (3094), 14 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states 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 22:18:18,487 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 221.0) internal successors, (3094), 14 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states 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 22:18:18,487 INFO L175 Difference]: Start difference. First operand has 71 places, 55 transitions, 218 flow. Second operand 13 states and 981 transitions. [2023-08-25 22:18:18,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 71 transitions, 376 flow [2023-08-25 22:18:18,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 71 transitions, 366 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-25 22:18:18,489 INFO L231 Difference]: Finished difference. Result has 74 places, 37 transitions, 149 flow [2023-08-25 22:18:18,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=149, PETRI_PLACES=74, PETRI_TRANSITIONS=37} [2023-08-25 22:18:18,490 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -9 predicate places. [2023-08-25 22:18:18,490 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 37 transitions, 149 flow [2023-08-25 22:18:18,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 74.3076923076923) internal successors, (966), 13 states have internal predecessors, (966), 0 states have call successors, (0), 0 states 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 22:18:18,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:18,491 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 22:18:18,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 22:18:18,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-25 22:18:18,696 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err15ASSERT_VIOLATIONASSERT === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err12ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT (and 44 more)] === [2023-08-25 22:18:18,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:18,696 INFO L85 PathProgramCache]: Analyzing trace with hash -42990212, now seen corresponding path program 1 times [2023-08-25 22:18:18,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:18,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338999241] [2023-08-25 22:18:18,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:18,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:18,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 22:18:18,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:18,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338999241] [2023-08-25 22:18:18,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338999241] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:18,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:18,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-25 22:18:18,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737543621] [2023-08-25 22:18:18,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:18,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 22:18:18,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:18,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 22:18:18,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-25 22:18:18,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 221 [2023-08-25 22:18:18,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 37 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 22:18:18,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:18,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 221 [2023-08-25 22:18:18,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:18,896 INFO L124 PetriNetUnfolderBase]: 15/73 cut-off events. [2023-08-25 22:18:18,896 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-08-25 22:18:18,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 73 events. 15/73 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 148 event pairs, 4 based on Foata normal form. 2/73 useless extension candidates. Maximal degree in co-relation 173. Up to 17 conditions per place. [2023-08-25 22:18:18,897 INFO L140 encePairwiseOnDemand]: 213/221 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-08-25 22:18:18,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 34 transitions, 171 flow [2023-08-25 22:18:18,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 22:18:18,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 22:18:18,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 663 transitions. [2023-08-25 22:18:18,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2023-08-25 22:18:18,900 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 663 transitions. [2023-08-25 22:18:18,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 663 transitions. [2023-08-25 22:18:18,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:18,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 663 transitions. [2023-08-25 22:18:18,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.66666666666667) internal successors, (663), 9 states have internal predecessors, (663), 0 states have call successors, (0), 0 states 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 22:18:18,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 221.0) internal successors, (2210), 10 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states 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 22:18:18,905 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 221.0) internal successors, (2210), 10 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states 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 22:18:18,905 INFO L175 Difference]: Start difference. First operand has 74 places, 37 transitions, 149 flow. Second operand 9 states and 663 transitions. [2023-08-25 22:18:18,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 34 transitions, 171 flow [2023-08-25 22:18:18,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 34 transitions, 135 flow, removed 2 selfloop flow, removed 16 redundant places. [2023-08-25 22:18:18,906 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-08-25 22:18:18,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-08-25 22:18:18,907 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -39 predicate places. [2023-08-25 22:18:18,907 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-08-25 22:18:18,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 22:18:18,907 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONDATA_RACE (47 of 48 remaining) [2023-08-25 22:18:18,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err12ASSERT_VIOLATIONDATA_RACE (46 of 48 remaining) [2023-08-25 22:18:18,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (45 of 48 remaining) [2023-08-25 22:18:18,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err15ASSERT_VIOLATIONASSERT (44 of 48 remaining) [2023-08-25 22:18:18,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (43 of 48 remaining) [2023-08-25 22:18:18,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (42 of 48 remaining) [2023-08-25 22:18:18,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (41 of 48 remaining) [2023-08-25 22:18:18,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err15ASSERT_VIOLATIONASSERT (40 of 48 remaining) [2023-08-25 22:18:18,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (39 of 48 remaining) [2023-08-25 22:18:18,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err11ASSERT_VIOLATIONDATA_RACE (38 of 48 remaining) [2023-08-25 22:18:18,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err15ASSERT_VIOLATIONASSERT (37 of 48 remaining) [2023-08-25 22:18:18,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err13ASSERT_VIOLATIONDATA_RACE (36 of 48 remaining) [2023-08-25 22:18:18,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err12ASSERT_VIOLATIONDATA_RACE (35 of 48 remaining) [2023-08-25 22:18:18,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err14ASSERT_VIOLATIONDATA_RACE (34 of 48 remaining) [2023-08-25 22:18:18,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (33 of 48 remaining) [2023-08-25 22:18:18,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (32 of 48 remaining) [2023-08-25 22:18:18,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err14ASSERT_VIOLATIONDATA_RACE (31 of 48 remaining) [2023-08-25 22:18:18,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (30 of 48 remaining) [2023-08-25 22:18:18,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err11ASSERT_VIOLATIONDATA_RACE (29 of 48 remaining) [2023-08-25 22:18:18,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (28 of 48 remaining) [2023-08-25 22:18:18,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err13ASSERT_VIOLATIONDATA_RACE (27 of 48 remaining) [2023-08-25 22:18:18,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err10ASSERT_VIOLATIONDATA_RACE (26 of 48 remaining) [2023-08-25 22:18:18,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err10ASSERT_VIOLATIONDATA_RACE (25 of 48 remaining) [2023-08-25 22:18:18,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 48 remaining) [2023-08-25 22:18:18,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 48 remaining) [2023-08-25 22:18:18,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err13ASSERT_VIOLATIONDATA_RACE (22 of 48 remaining) [2023-08-25 22:18:18,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONDATA_RACE (21 of 48 remaining) [2023-08-25 22:18:18,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 48 remaining) [2023-08-25 22:18:18,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 48 remaining) [2023-08-25 22:18:18,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (18 of 48 remaining) [2023-08-25 22:18:18,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 48 remaining) [2023-08-25 22:18:18,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONDATA_RACE (16 of 48 remaining) [2023-08-25 22:18:18,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err14ASSERT_VIOLATIONDATA_RACE (15 of 48 remaining) [2023-08-25 22:18:18,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 48 remaining) [2023-08-25 22:18:18,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err11ASSERT_VIOLATIONDATA_RACE (13 of 48 remaining) [2023-08-25 22:18:18,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONDATA_RACE (12 of 48 remaining) [2023-08-25 22:18:18,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (11 of 48 remaining) [2023-08-25 22:18:18,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (10 of 48 remaining) [2023-08-25 22:18:18,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONDATA_RACE (9 of 48 remaining) [2023-08-25 22:18:18,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONDATA_RACE (8 of 48 remaining) [2023-08-25 22:18:18,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 48 remaining) [2023-08-25 22:18:18,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 48 remaining) [2023-08-25 22:18:18,913 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 48 remaining) [2023-08-25 22:18:18,913 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err12ASSERT_VIOLATIONDATA_RACE (4 of 48 remaining) [2023-08-25 22:18:18,913 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 48 remaining) [2023-08-25 22:18:18,913 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 48 remaining) [2023-08-25 22:18:18,913 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err10ASSERT_VIOLATIONDATA_RACE (1 of 48 remaining) [2023-08-25 22:18:18,913 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 48 remaining) [2023-08-25 22:18:18,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-25 22:18:18,913 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:18,914 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-25 22:18:18,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 134 transitions, 280 flow [2023-08-25 22:18:18,930 INFO L124 PetriNetUnfolderBase]: 9/156 cut-off events. [2023-08-25 22:18:18,930 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 22:18:18,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 156 events. 9/156 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 390 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 118. Up to 6 conditions per place. [2023-08-25 22:18:18,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 134 transitions, 280 flow [2023-08-25 22:18:18,933 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 134 transitions, 280 flow [2023-08-25 22:18:18,933 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 22:18:18,933 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 134 transitions, 280 flow [2023-08-25 22:18:18,934 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 134 transitions, 280 flow [2023-08-25 22:18:18,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 134 transitions, 280 flow [2023-08-25 22:18:18,944 INFO L124 PetriNetUnfolderBase]: 9/156 cut-off events. [2023-08-25 22:18:18,944 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 22:18:18,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 156 events. 9/156 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 390 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 118. Up to 6 conditions per place. [2023-08-25 22:18:18,949 INFO L119 LiptonReduction]: Number of co-enabled transitions 8480 [2023-08-25 22:18:19,916 INFO L134 LiptonReduction]: Checked pairs total: 38882 [2023-08-25 22:18:19,917 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-25 22:18:19,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 22:18:19,918 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;@678ac4a4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 22:18:19,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-25 22:18:19,921 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 22:18:19,921 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2023-08-25 22:18:19,921 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 22:18:19,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:19,921 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-25 22:18:19,922 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 22:18:19,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:19,922 INFO L85 PathProgramCache]: Analyzing trace with hash -2101642488, now seen corresponding path program 1 times [2023-08-25 22:18:19,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:19,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430677041] [2023-08-25 22:18:19,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:19,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:18:19,930 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 22:18:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:18:19,937 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 22:18:19,937 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 22:18:19,937 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-25 22:18:19,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-25 22:18:19,937 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 22:18:19,938 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-25 22:18:19,938 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 22:18:19,938 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-25 22:18:19,958 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 22:18:19,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 188 transitions, 397 flow [2023-08-25 22:18:19,978 INFO L124 PetriNetUnfolderBase]: 13/222 cut-off events. [2023-08-25 22:18:19,979 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-25 22:18:19,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 222 events. 13/222 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 711 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 171. Up to 8 conditions per place. [2023-08-25 22:18:19,980 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 188 transitions, 397 flow [2023-08-25 22:18:19,983 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 188 transitions, 397 flow [2023-08-25 22:18:19,983 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 22:18:19,983 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 188 transitions, 397 flow [2023-08-25 22:18:19,984 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 188 transitions, 397 flow [2023-08-25 22:18:19,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 188 transitions, 397 flow [2023-08-25 22:18:20,001 INFO L124 PetriNetUnfolderBase]: 13/222 cut-off events. [2023-08-25 22:18:20,001 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-25 22:18:20,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 222 events. 13/222 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 711 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 171. Up to 8 conditions per place. [2023-08-25 22:18:20,012 INFO L119 LiptonReduction]: Number of co-enabled transitions 21306 [2023-08-25 22:18:21,299 INFO L134 LiptonReduction]: Checked pairs total: 104036 [2023-08-25 22:18:21,299 INFO L136 LiptonReduction]: Total number of compositions: 120 [2023-08-25 22:18:21,300 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 22:18:21,300 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;@678ac4a4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 22:18:21,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2023-08-25 22:18:21,301 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 22:18:21,301 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-25 22:18:21,302 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:18:21,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:21,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 22:18:21,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 22:18:21,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:21,302 INFO L85 PathProgramCache]: Analyzing trace with hash 42743636, now seen corresponding path program 1 times [2023-08-25 22:18:21,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:21,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599049776] [2023-08-25 22:18:21,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:21,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:21,311 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 22:18:21,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:21,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599049776] [2023-08-25 22:18:21,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599049776] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:21,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:21,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 22:18:21,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106953690] [2023-08-25 22:18:21,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:21,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 22:18:21,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:21,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 22:18:21,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 22:18:21,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 308 [2023-08-25 22:18:21,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 117 transitions, 255 flow. Second operand has 2 states, 2 states have (on average 119.0) internal successors, (238), 2 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 22:18:21,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:21,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 308 [2023-08-25 22:18:21,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:22,511 INFO L124 PetriNetUnfolderBase]: 9241/15223 cut-off events. [2023-08-25 22:18:22,511 INFO L125 PetriNetUnfolderBase]: For 925/925 co-relation queries the response was YES. [2023-08-25 22:18:22,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28889 conditions, 15223 events. 9241/15223 cut-off events. For 925/925 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 114821 event pairs, 8327 based on Foata normal form. 0/14262 useless extension candidates. Maximal degree in co-relation 16187. Up to 13012 conditions per place. [2023-08-25 22:18:22,611 INFO L140 encePairwiseOnDemand]: 271/308 looper letters, 41 selfloop transitions, 0 changer transitions 0/80 dead transitions. [2023-08-25 22:18:22,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 80 transitions, 263 flow [2023-08-25 22:18:22,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 22:18:22,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 22:18:22,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 312 transitions. [2023-08-25 22:18:22,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064935064935064 [2023-08-25 22:18:22,614 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 312 transitions. [2023-08-25 22:18:22,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 312 transitions. [2023-08-25 22:18:22,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:22,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 312 transitions. [2023-08-25 22:18:22,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 156.0) internal successors, (312), 2 states have internal predecessors, (312), 0 states have call successors, (0), 0 states 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 22:18:22,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states 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 22:18:22,617 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states 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 22:18:22,617 INFO L175 Difference]: Start difference. First operand has 121 places, 117 transitions, 255 flow. Second operand 2 states and 312 transitions. [2023-08-25 22:18:22,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 80 transitions, 263 flow [2023-08-25 22:18:22,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 257 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-25 22:18:22,619 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 175 flow [2023-08-25 22:18:22,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=175, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2023-08-25 22:18:22,620 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, -36 predicate places. [2023-08-25 22:18:22,620 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 175 flow [2023-08-25 22:18:22,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 119.0) internal successors, (238), 2 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 22:18:22,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:22,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-25 22:18:22,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-25 22:18:22,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 22:18:22,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:22,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1873000489, now seen corresponding path program 1 times [2023-08-25 22:18:22,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:22,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184310467] [2023-08-25 22:18:22,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:22,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:22,637 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 22:18:22,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:22,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184310467] [2023-08-25 22:18:22,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184310467] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:22,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:22,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:18:22,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668250226] [2023-08-25 22:18:22,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:22,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:22,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:22,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:22,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:22,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 308 [2023-08-25 22:18:22,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states 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 22:18:22,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:22,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 308 [2023-08-25 22:18:22,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:27,945 INFO L124 PetriNetUnfolderBase]: 59382/90636 cut-off events. [2023-08-25 22:18:27,945 INFO L125 PetriNetUnfolderBase]: For 1609/1609 co-relation queries the response was YES. [2023-08-25 22:18:28,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177465 conditions, 90636 events. 59382/90636 cut-off events. For 1609/1609 co-relation queries the response was YES. Maximal size of possible extension queue 2970. Compared 760179 event pairs, 22217 based on Foata normal form. 0/77448 useless extension candidates. Maximal degree in co-relation 177459. Up to 47639 conditions per place. [2023-08-25 22:18:28,498 INFO L140 encePairwiseOnDemand]: 284/308 looper letters, 102 selfloop transitions, 18 changer transitions 0/136 dead transitions. [2023-08-25 22:18:28,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 136 transitions, 537 flow [2023-08-25 22:18:28,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:28,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:28,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-08-25 22:18:28,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39935064935064934 [2023-08-25 22:18:28,500 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-08-25 22:18:28,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-08-25 22:18:28,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:28,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-08-25 22:18:28,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states 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 22:18:28,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 22:18:28,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 22:18:28,503 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 175 flow. Second operand 3 states and 369 transitions. [2023-08-25 22:18:28,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 136 transitions, 537 flow [2023-08-25 22:18:28,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 136 transitions, 537 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 22:18:28,507 INFO L231 Difference]: Finished difference. Result has 89 places, 98 transitions, 331 flow [2023-08-25 22:18:28,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=331, PETRI_PLACES=89, PETRI_TRANSITIONS=98} [2023-08-25 22:18:28,508 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, -32 predicate places. [2023-08-25 22:18:28,508 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 98 transitions, 331 flow [2023-08-25 22:18:28,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states 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 22:18:28,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:28,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:28,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-25 22:18:28,509 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 22:18:28,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:28,509 INFO L85 PathProgramCache]: Analyzing trace with hash -119819268, now seen corresponding path program 1 times [2023-08-25 22:18:28,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:28,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055836391] [2023-08-25 22:18:28,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:28,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:28,525 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 22:18:28,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:28,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055836391] [2023-08-25 22:18:28,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055836391] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:28,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:28,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:18:28,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840405501] [2023-08-25 22:18:28,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:28,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:28,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:28,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:28,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:28,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 308 [2023-08-25 22:18:28,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 98 transitions, 331 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states 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 22:18:28,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:28,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 308 [2023-08-25 22:18:28,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:34,634 INFO L124 PetriNetUnfolderBase]: 63402/94745 cut-off events. [2023-08-25 22:18:34,634 INFO L125 PetriNetUnfolderBase]: For 37564/37700 co-relation queries the response was YES. [2023-08-25 22:18:34,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226752 conditions, 94745 events. 63402/94745 cut-off events. For 37564/37700 co-relation queries the response was YES. Maximal size of possible extension queue 3093. Compared 770490 event pairs, 43040 based on Foata normal form. 0/84143 useless extension candidates. Maximal degree in co-relation 226744. Up to 81745 conditions per place. [2023-08-25 22:18:35,206 INFO L140 encePairwiseOnDemand]: 296/308 looper letters, 118 selfloop transitions, 21 changer transitions 0/155 dead transitions. [2023-08-25 22:18:35,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 155 transitions, 819 flow [2023-08-25 22:18:35,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:35,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:35,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2023-08-25 22:18:35,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2023-08-25 22:18:35,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 343 transitions. [2023-08-25 22:18:35,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 343 transitions. [2023-08-25 22:18:35,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:35,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 343 transitions. [2023-08-25 22:18:35,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states 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 22:18:35,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 22:18:35,212 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 22:18:35,212 INFO L175 Difference]: Start difference. First operand has 89 places, 98 transitions, 331 flow. Second operand 3 states and 343 transitions. [2023-08-25 22:18:35,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 155 transitions, 819 flow [2023-08-25 22:18:35,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 155 transitions, 757 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:18:35,297 INFO L231 Difference]: Finished difference. Result has 91 places, 117 transitions, 493 flow [2023-08-25 22:18:35,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=493, PETRI_PLACES=91, PETRI_TRANSITIONS=117} [2023-08-25 22:18:35,298 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, -30 predicate places. [2023-08-25 22:18:35,298 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 117 transitions, 493 flow [2023-08-25 22:18:35,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states 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 22:18:35,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:35,299 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:35,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-25 22:18:35,299 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 22:18:35,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:35,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1530222511, now seen corresponding path program 1 times [2023-08-25 22:18:35,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:35,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461554343] [2023-08-25 22:18:35,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:35,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:35,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 22:18:35,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:35,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461554343] [2023-08-25 22:18:35,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461554343] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:35,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:35,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:18:35,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024143326] [2023-08-25 22:18:35,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:35,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:35,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:35,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:35,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:35,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 308 [2023-08-25 22:18:35,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 117 transitions, 493 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states 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 22:18:35,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:35,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 308 [2023-08-25 22:18:35,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:42,034 INFO L124 PetriNetUnfolderBase]: 67437/101061 cut-off events. [2023-08-25 22:18:42,034 INFO L125 PetriNetUnfolderBase]: For 57045/57369 co-relation queries the response was YES. [2023-08-25 22:18:42,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253696 conditions, 101061 events. 67437/101061 cut-off events. For 57045/57369 co-relation queries the response was YES. Maximal size of possible extension queue 3318. Compared 831724 event pairs, 44040 based on Foata normal form. 0/88681 useless extension candidates. Maximal degree in co-relation 253687. Up to 86491 conditions per place. [2023-08-25 22:18:42,679 INFO L140 encePairwiseOnDemand]: 296/308 looper letters, 136 selfloop transitions, 33 changer transitions 0/185 dead transitions. [2023-08-25 22:18:42,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 185 transitions, 1132 flow [2023-08-25 22:18:42,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:42,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:42,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2023-08-25 22:18:42,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2023-08-25 22:18:42,681 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 343 transitions. [2023-08-25 22:18:42,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 343 transitions. [2023-08-25 22:18:42,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:42,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 343 transitions. [2023-08-25 22:18:42,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states 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 22:18:42,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 22:18:42,684 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 22:18:42,684 INFO L175 Difference]: Start difference. First operand has 91 places, 117 transitions, 493 flow. Second operand 3 states and 343 transitions. [2023-08-25 22:18:42,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 185 transitions, 1132 flow [2023-08-25 22:18:42,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 185 transitions, 1064 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:18:42,900 INFO L231 Difference]: Finished difference. Result has 93 places, 146 transitions, 805 flow [2023-08-25 22:18:42,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=805, PETRI_PLACES=93, PETRI_TRANSITIONS=146} [2023-08-25 22:18:42,900 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, -28 predicate places. [2023-08-25 22:18:42,900 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 146 transitions, 805 flow [2023-08-25 22:18:42,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states 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 22:18:42,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:42,901 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:42,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-25 22:18:42,901 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 22:18:42,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:42,901 INFO L85 PathProgramCache]: Analyzing trace with hash 267376527, now seen corresponding path program 1 times [2023-08-25 22:18:42,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:42,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025113554] [2023-08-25 22:18:42,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:42,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:42,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 22:18:42,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:42,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025113554] [2023-08-25 22:18:42,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025113554] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:42,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:42,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:18:42,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672182540] [2023-08-25 22:18:42,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:42,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:42,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:42,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:42,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:42,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 308 [2023-08-25 22:18:42,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 146 transitions, 805 flow. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states 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 22:18:42,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:42,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 308 [2023-08-25 22:18:42,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:43,540 INFO L124 PetriNetUnfolderBase]: 2762/6289 cut-off events. [2023-08-25 22:18:43,541 INFO L125 PetriNetUnfolderBase]: For 2804/2804 co-relation queries the response was YES. [2023-08-25 22:18:43,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13834 conditions, 6289 events. 2762/6289 cut-off events. For 2804/2804 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 52898 event pairs, 587 based on Foata normal form. 1048/7148 useless extension candidates. Maximal degree in co-relation 13824. Up to 3347 conditions per place. [2023-08-25 22:18:43,567 INFO L140 encePairwiseOnDemand]: 296/308 looper letters, 38 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2023-08-25 22:18:43,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 84 transitions, 391 flow [2023-08-25 22:18:43,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:43,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:43,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 404 transitions. [2023-08-25 22:18:43,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43722943722943725 [2023-08-25 22:18:43,570 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 404 transitions. [2023-08-25 22:18:43,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 404 transitions. [2023-08-25 22:18:43,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:43,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 404 transitions. [2023-08-25 22:18:43,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states 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 22:18:43,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 22:18:43,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 22:18:43,573 INFO L175 Difference]: Start difference. First operand has 93 places, 146 transitions, 805 flow. Second operand 3 states and 404 transitions. [2023-08-25 22:18:43,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 84 transitions, 391 flow [2023-08-25 22:18:43,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 84 transitions, 323 flow, removed 28 selfloop flow, removed 6 redundant places. [2023-08-25 22:18:43,585 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 219 flow [2023-08-25 22:18:43,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2023-08-25 22:18:43,585 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, -40 predicate places. [2023-08-25 22:18:43,585 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 219 flow [2023-08-25 22:18:43,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states 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 22:18:43,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:43,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:43,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-25 22:18:43,586 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 22:18:43,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:43,587 INFO L85 PathProgramCache]: Analyzing trace with hash 745773677, now seen corresponding path program 1 times [2023-08-25 22:18:43,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:43,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645152940] [2023-08-25 22:18:43,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:43,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:43,603 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 22:18:43,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:43,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645152940] [2023-08-25 22:18:43,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645152940] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:43,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:43,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:18:43,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116755211] [2023-08-25 22:18:43,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:43,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:43,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:43,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:43,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:43,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 308 [2023-08-25 22:18:43,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 22:18:43,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:43,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 308 [2023-08-25 22:18:43,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:44,092 INFO L124 PetriNetUnfolderBase]: 3792/7050 cut-off events. [2023-08-25 22:18:44,093 INFO L125 PetriNetUnfolderBase]: For 1359/1359 co-relation queries the response was YES. [2023-08-25 22:18:44,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15782 conditions, 7050 events. 3792/7050 cut-off events. For 1359/1359 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 52032 event pairs, 3391 based on Foata normal form. 0/6729 useless extension candidates. Maximal degree in co-relation 15774. Up to 6326 conditions per place. [2023-08-25 22:18:44,120 INFO L140 encePairwiseOnDemand]: 305/308 looper letters, 63 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-08-25 22:18:44,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 371 flow [2023-08-25 22:18:44,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:44,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:44,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-25 22:18:44,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2023-08-25 22:18:44,121 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-25 22:18:44,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-25 22:18:44,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:44,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-25 22:18:44,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states 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 22:18:44,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 22:18:44,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 22:18:44,124 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 219 flow. Second operand 3 states and 297 transitions. [2023-08-25 22:18:44,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 371 flow [2023-08-25 22:18:44,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 81 transitions, 359 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:18:44,129 INFO L231 Difference]: Finished difference. Result has 81 places, 74 transitions, 209 flow [2023-08-25 22:18:44,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=81, PETRI_TRANSITIONS=74} [2023-08-25 22:18:44,129 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, -40 predicate places. [2023-08-25 22:18:44,130 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 74 transitions, 209 flow [2023-08-25 22:18:44,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 22:18:44,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:44,130 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:44,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-25 22:18:44,130 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 22:18:44,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:44,130 INFO L85 PathProgramCache]: Analyzing trace with hash 25097750, now seen corresponding path program 1 times [2023-08-25 22:18:44,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:44,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841770694] [2023-08-25 22:18:44,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:44,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:44,154 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-25 22:18:44,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:44,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841770694] [2023-08-25 22:18:44,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841770694] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:44,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:44,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:18:44,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062585701] [2023-08-25 22:18:44,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:44,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:44,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:44,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:44,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:44,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 308 [2023-08-25 22:18:44,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 74 transitions, 209 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states 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 22:18:44,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:44,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 308 [2023-08-25 22:18:44,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:44,585 INFO L124 PetriNetUnfolderBase]: 3727/6935 cut-off events. [2023-08-25 22:18:44,585 INFO L125 PetriNetUnfolderBase]: For 1201/1201 co-relation queries the response was YES. [2023-08-25 22:18:44,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15217 conditions, 6935 events. 3727/6935 cut-off events. For 1201/1201 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 50997 event pairs, 3277 based on Foata normal form. 0/6664 useless extension candidates. Maximal degree in co-relation 15208. Up to 6124 conditions per place. [2023-08-25 22:18:44,611 INFO L140 encePairwiseOnDemand]: 305/308 looper letters, 60 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-08-25 22:18:44,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 78 transitions, 341 flow [2023-08-25 22:18:44,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:44,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:44,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2023-08-25 22:18:44,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2023-08-25 22:18:44,612 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2023-08-25 22:18:44,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2023-08-25 22:18:44,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:44,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2023-08-25 22:18:44,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states 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 22:18:44,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 22:18:44,614 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 22:18:44,615 INFO L175 Difference]: Start difference. First operand has 81 places, 74 transitions, 209 flow. Second operand 3 states and 294 transitions. [2023-08-25 22:18:44,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 78 transitions, 341 flow [2023-08-25 22:18:44,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 78 transitions, 337 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:18:44,618 INFO L231 Difference]: Finished difference. Result has 80 places, 73 transitions, 207 flow [2023-08-25 22:18:44,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=207, PETRI_PLACES=80, PETRI_TRANSITIONS=73} [2023-08-25 22:18:44,619 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, -41 predicate places. [2023-08-25 22:18:44,619 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 73 transitions, 207 flow [2023-08-25 22:18:44,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states 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 22:18:44,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:44,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:44,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-25 22:18:44,619 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err15ASSERT_VIOLATIONASSERT === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 22:18:44,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:44,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1673045118, now seen corresponding path program 1 times [2023-08-25 22:18:44,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:44,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590703079] [2023-08-25 22:18:44,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:44,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:44,689 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 22:18:44,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:44,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590703079] [2023-08-25 22:18:44,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590703079] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:44,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:44,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:18:44,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497354570] [2023-08-25 22:18:44,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:44,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:44,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:44,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:44,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:44,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 308 [2023-08-25 22:18:44,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 73 transitions, 207 flow. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states 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 22:18:44,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:44,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 308 [2023-08-25 22:18:44,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:44,981 INFO L124 PetriNetUnfolderBase]: 1525/3729 cut-off events. [2023-08-25 22:18:44,981 INFO L125 PetriNetUnfolderBase]: For 584/584 co-relation queries the response was YES. [2023-08-25 22:18:44,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7810 conditions, 3729 events. 1525/3729 cut-off events. For 584/584 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 29893 event pairs, 647 based on Foata normal form. 242/3847 useless extension candidates. Maximal degree in co-relation 7801. Up to 1467 conditions per place. [2023-08-25 22:18:44,994 INFO L140 encePairwiseOnDemand]: 298/308 looper letters, 70 selfloop transitions, 7 changer transitions 0/109 dead transitions. [2023-08-25 22:18:44,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 109 transitions, 473 flow [2023-08-25 22:18:44,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:44,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:44,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2023-08-25 22:18:44,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46320346320346323 [2023-08-25 22:18:44,997 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2023-08-25 22:18:44,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2023-08-25 22:18:44,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:44,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2023-08-25 22:18:44,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states 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 22:18:45,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 22:18:45,000 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 22:18:45,001 INFO L175 Difference]: Start difference. First operand has 80 places, 73 transitions, 207 flow. Second operand 3 states and 428 transitions. [2023-08-25 22:18:45,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 109 transitions, 473 flow [2023-08-25 22:18:45,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 109 transitions, 465 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:18:45,004 INFO L231 Difference]: Finished difference. Result has 82 places, 79 transitions, 261 flow [2023-08-25 22:18:45,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=82, PETRI_TRANSITIONS=79} [2023-08-25 22:18:45,004 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, -39 predicate places. [2023-08-25 22:18:45,005 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 79 transitions, 261 flow [2023-08-25 22:18:45,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states 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 22:18:45,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:45,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:45,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-25 22:18:45,005 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err15ASSERT_VIOLATIONASSERT === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 22:18:45,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:45,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1644151506, now seen corresponding path program 1 times [2023-08-25 22:18:45,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:45,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340311059] [2023-08-25 22:18:45,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:45,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:45,059 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 22:18:45,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:45,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340311059] [2023-08-25 22:18:45,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340311059] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:45,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:45,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 22:18:45,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123825083] [2023-08-25 22:18:45,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:45,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 22:18:45,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:45,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 22:18:45,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 22:18:45,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 308 [2023-08-25 22:18:45,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 79 transitions, 261 flow. Second operand has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states 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 22:18:45,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:45,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 308 [2023-08-25 22:18:45,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:45,517 INFO L124 PetriNetUnfolderBase]: 1934/4317 cut-off events. [2023-08-25 22:18:45,518 INFO L125 PetriNetUnfolderBase]: For 1504/1504 co-relation queries the response was YES. [2023-08-25 22:18:45,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10727 conditions, 4317 events. 1934/4317 cut-off events. For 1504/1504 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 34904 event pairs, 625 based on Foata normal form. 0/4227 useless extension candidates. Maximal degree in co-relation 10717. Up to 1597 conditions per place. [2023-08-25 22:18:45,538 INFO L140 encePairwiseOnDemand]: 298/308 looper letters, 118 selfloop transitions, 11 changer transitions 0/148 dead transitions. [2023-08-25 22:18:45,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 148 transitions, 786 flow [2023-08-25 22:18:45,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 22:18:45,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 22:18:45,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 712 transitions. [2023-08-25 22:18:45,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3852813852813853 [2023-08-25 22:18:45,541 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 712 transitions. [2023-08-25 22:18:45,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 712 transitions. [2023-08-25 22:18:45,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:45,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 712 transitions. [2023-08-25 22:18:45,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.66666666666667) internal successors, (712), 6 states have internal predecessors, (712), 0 states have call successors, (0), 0 states 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 22:18:45,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 308.0) internal successors, (2156), 7 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states 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 22:18:45,545 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 308.0) internal successors, (2156), 7 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states 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 22:18:45,545 INFO L175 Difference]: Start difference. First operand has 82 places, 79 transitions, 261 flow. Second operand 6 states and 712 transitions. [2023-08-25 22:18:45,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 148 transitions, 786 flow [2023-08-25 22:18:45,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 148 transitions, 752 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:18:45,551 INFO L231 Difference]: Finished difference. Result has 89 places, 86 transitions, 309 flow [2023-08-25 22:18:45,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=309, PETRI_PLACES=89, PETRI_TRANSITIONS=86} [2023-08-25 22:18:45,552 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, -32 predicate places. [2023-08-25 22:18:45,552 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 86 transitions, 309 flow [2023-08-25 22:18:45,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states 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 22:18:45,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:45,552 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:45,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-25 22:18:45,552 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 22:18:45,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:45,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1103525778, now seen corresponding path program 1 times [2023-08-25 22:18:45,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:45,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433079469] [2023-08-25 22:18:45,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:45,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:45,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 22:18:45,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:45,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433079469] [2023-08-25 22:18:45,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433079469] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:45,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:45,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:18:45,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87146110] [2023-08-25 22:18:45,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:45,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:45,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:45,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:45,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:45,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 308 [2023-08-25 22:18:45,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 86 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 22:18:45,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:45,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 308 [2023-08-25 22:18:45,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:45,961 INFO L124 PetriNetUnfolderBase]: 1998/4242 cut-off events. [2023-08-25 22:18:45,961 INFO L125 PetriNetUnfolderBase]: For 1420/1420 co-relation queries the response was YES. [2023-08-25 22:18:45,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10769 conditions, 4242 events. 1998/4242 cut-off events. For 1420/1420 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 32418 event pairs, 1724 based on Foata normal form. 0/4127 useless extension candidates. Maximal degree in co-relation 10755. Up to 3763 conditions per place. [2023-08-25 22:18:45,985 INFO L140 encePairwiseOnDemand]: 305/308 looper letters, 69 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2023-08-25 22:18:45,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 93 transitions, 482 flow [2023-08-25 22:18:45,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:45,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2023-08-25 22:18:45,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2023-08-25 22:18:45,987 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2023-08-25 22:18:45,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2023-08-25 22:18:45,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:45,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2023-08-25 22:18:45,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states 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 22:18:45,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 22:18:45,990 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 22:18:45,990 INFO L175 Difference]: Start difference. First operand has 89 places, 86 transitions, 309 flow. Second operand 3 states and 294 transitions. [2023-08-25 22:18:45,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 93 transitions, 482 flow [2023-08-25 22:18:45,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 93 transitions, 482 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 22:18:45,994 INFO L231 Difference]: Finished difference. Result has 90 places, 85 transitions, 311 flow [2023-08-25 22:18:45,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=311, PETRI_PLACES=90, PETRI_TRANSITIONS=85} [2023-08-25 22:18:45,995 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, -31 predicate places. [2023-08-25 22:18:45,995 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 85 transitions, 311 flow [2023-08-25 22:18:45,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 22:18:45,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:45,995 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:45,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-25 22:18:45,996 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err15ASSERT_VIOLATIONASSERT === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 22:18:45,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:45,996 INFO L85 PathProgramCache]: Analyzing trace with hash 150442701, now seen corresponding path program 1 times [2023-08-25 22:18:45,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:45,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126812079] [2023-08-25 22:18:45,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:45,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:46,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 22:18:46,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:46,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126812079] [2023-08-25 22:18:46,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126812079] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:46,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:46,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 22:18:46,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342657110] [2023-08-25 22:18:46,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:46,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 22:18:46,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:46,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 22:18:46,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 22:18:46,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 308 [2023-08-25 22:18:46,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 85 transitions, 311 flow. Second operand has 5 states, 5 states have (on average 102.2) internal successors, (511), 5 states have internal predecessors, (511), 0 states have call successors, (0), 0 states 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 22:18:46,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:46,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 308 [2023-08-25 22:18:46,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:46,500 INFO L124 PetriNetUnfolderBase]: 1793/3952 cut-off events. [2023-08-25 22:18:46,501 INFO L125 PetriNetUnfolderBase]: For 1444/1444 co-relation queries the response was YES. [2023-08-25 22:18:46,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10036 conditions, 3952 events. 1793/3952 cut-off events. For 1444/1444 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 31115 event pairs, 572 based on Foata normal form. 0/3896 useless extension candidates. Maximal degree in co-relation 10021. Up to 1609 conditions per place. [2023-08-25 22:18:46,520 INFO L140 encePairwiseOnDemand]: 298/308 looper letters, 119 selfloop transitions, 11 changer transitions 0/148 dead transitions. [2023-08-25 22:18:46,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 148 transitions, 802 flow [2023-08-25 22:18:46,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 22:18:46,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 22:18:46,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 710 transitions. [2023-08-25 22:18:46,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841991341991342 [2023-08-25 22:18:46,523 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 710 transitions. [2023-08-25 22:18:46,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 710 transitions. [2023-08-25 22:18:46,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:46,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 710 transitions. [2023-08-25 22:18:46,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.33333333333333) internal successors, (710), 6 states have internal predecessors, (710), 0 states have call successors, (0), 0 states 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 22:18:46,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 308.0) internal successors, (2156), 7 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states 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 22:18:46,527 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 308.0) internal successors, (2156), 7 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states 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 22:18:46,527 INFO L175 Difference]: Start difference. First operand has 90 places, 85 transitions, 311 flow. Second operand 6 states and 710 transitions. [2023-08-25 22:18:46,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 148 transitions, 802 flow [2023-08-25 22:18:46,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 148 transitions, 798 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:18:46,533 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 363 flow [2023-08-25 22:18:46,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=363, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2023-08-25 22:18:46,534 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, -25 predicate places. [2023-08-25 22:18:46,534 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 363 flow [2023-08-25 22:18:46,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.2) internal successors, (511), 5 states have internal predecessors, (511), 0 states have call successors, (0), 0 states 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 22:18:46,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:46,534 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:46,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-25 22:18:46,534 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 22:18:46,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:46,535 INFO L85 PathProgramCache]: Analyzing trace with hash 382119967, now seen corresponding path program 1 times [2023-08-25 22:18:46,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:46,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201098441] [2023-08-25 22:18:46,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:46,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-25 22:18:46,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:46,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201098441] [2023-08-25 22:18:46,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201098441] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:46,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:46,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:18:46,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267307699] [2023-08-25 22:18:46,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:46,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:46,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:46,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:46,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:46,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 308 [2023-08-25 22:18:46,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 363 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states 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 22:18:46,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:46,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 308 [2023-08-25 22:18:46,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:46,940 INFO L124 PetriNetUnfolderBase]: 1809/3843 cut-off events. [2023-08-25 22:18:46,940 INFO L125 PetriNetUnfolderBase]: For 2048/2048 co-relation queries the response was YES. [2023-08-25 22:18:46,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10060 conditions, 3843 events. 1809/3843 cut-off events. For 2048/2048 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 29242 event pairs, 1570 based on Foata normal form. 0/3792 useless extension candidates. Maximal degree in co-relation 10042. Up to 3427 conditions per place. [2023-08-25 22:18:46,966 INFO L140 encePairwiseOnDemand]: 305/308 looper letters, 68 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2023-08-25 22:18:46,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 95 transitions, 527 flow [2023-08-25 22:18:46,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:46,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:46,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2023-08-25 22:18:46,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31601731601731603 [2023-08-25 22:18:46,969 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2023-08-25 22:18:46,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2023-08-25 22:18:46,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:46,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2023-08-25 22:18:46,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states 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 22:18:46,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 22:18:46,973 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 22:18:46,973 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 363 flow. Second operand 3 states and 292 transitions. [2023-08-25 22:18:46,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 95 transitions, 527 flow [2023-08-25 22:18:46,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 95 transitions, 515 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-25 22:18:46,978 INFO L231 Difference]: Finished difference. Result has 96 places, 88 transitions, 353 flow [2023-08-25 22:18:46,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=353, PETRI_PLACES=96, PETRI_TRANSITIONS=88} [2023-08-25 22:18:46,979 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, -25 predicate places. [2023-08-25 22:18:46,980 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 88 transitions, 353 flow [2023-08-25 22:18:46,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states 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 22:18:46,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:46,980 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:46,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-25 22:18:46,980 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err15ASSERT_VIOLATIONASSERT === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 22:18:46,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:46,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1039176393, now seen corresponding path program 1 times [2023-08-25 22:18:46,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:46,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538401812] [2023-08-25 22:18:46,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:46,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:47,053 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-25 22:18:47,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:47,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538401812] [2023-08-25 22:18:47,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538401812] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:47,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:47,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 22:18:47,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497268722] [2023-08-25 22:18:47,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:47,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 22:18:47,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:47,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 22:18:47,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 22:18:47,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 308 [2023-08-25 22:18:47,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 88 transitions, 353 flow. Second operand has 5 states, 5 states have (on average 102.2) internal successors, (511), 5 states have internal predecessors, (511), 0 states have call successors, (0), 0 states 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 22:18:47,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:47,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 308 [2023-08-25 22:18:47,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:47,495 INFO L124 PetriNetUnfolderBase]: 1427/3105 cut-off events. [2023-08-25 22:18:47,495 INFO L125 PetriNetUnfolderBase]: For 1620/1620 co-relation queries the response was YES. [2023-08-25 22:18:47,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8234 conditions, 3105 events. 1427/3105 cut-off events. For 1620/1620 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 22716 event pairs, 430 based on Foata normal form. 0/3091 useless extension candidates. Maximal degree in co-relation 8216. Up to 1214 conditions per place. [2023-08-25 22:18:47,541 INFO L140 encePairwiseOnDemand]: 298/308 looper letters, 116 selfloop transitions, 11 changer transitions 0/144 dead transitions. [2023-08-25 22:18:47,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 144 transitions, 807 flow [2023-08-25 22:18:47,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 22:18:47,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 22:18:47,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 707 transitions. [2023-08-25 22:18:47,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38257575757575757 [2023-08-25 22:18:47,544 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 707 transitions. [2023-08-25 22:18:47,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 707 transitions. [2023-08-25 22:18:47,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:47,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 707 transitions. [2023-08-25 22:18:47,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 22:18:47,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 308.0) internal successors, (2156), 7 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states 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 22:18:47,548 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 308.0) internal successors, (2156), 7 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states 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 22:18:47,548 INFO L175 Difference]: Start difference. First operand has 96 places, 88 transitions, 353 flow. Second operand 6 states and 707 transitions. [2023-08-25 22:18:47,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 144 transitions, 807 flow [2023-08-25 22:18:47,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 144 transitions, 803 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:18:47,554 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 395 flow [2023-08-25 22:18:47,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=395, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2023-08-25 22:18:47,554 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, -19 predicate places. [2023-08-25 22:18:47,555 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 395 flow [2023-08-25 22:18:47,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.2) internal successors, (511), 5 states have internal predecessors, (511), 0 states have call successors, (0), 0 states 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 22:18:47,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:47,555 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 22:18:47,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-25 22:18:47,555 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err15ASSERT_VIOLATIONASSERT === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 22:18:47,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:47,556 INFO L85 PathProgramCache]: Analyzing trace with hash -855678456, now seen corresponding path program 1 times [2023-08-25 22:18:47,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:47,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134928141] [2023-08-25 22:18:47,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:47,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:47,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 22:18:47,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:47,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134928141] [2023-08-25 22:18:47,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134928141] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 22:18:47,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747573748] [2023-08-25 22:18:47,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:47,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 22:18:47,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 22:18:47,662 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 22:18:47,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 22:18:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:47,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-25 22:18:47,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 22:18:47,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 22:18:47,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 22:18:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 22:18:47,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747573748] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 22:18:47,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 22:18:47,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-25 22:18:47,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483934650] [2023-08-25 22:18:47,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 22:18:47,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 22:18:47,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:47,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 22:18:47,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-08-25 22:18:47,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 308 [2023-08-25 22:18:47,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 395 flow. Second operand has 13 states, 13 states have (on average 100.6923076923077) internal successors, (1309), 13 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states 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 22:18:47,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:47,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 308 [2023-08-25 22:18:47,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:48,665 INFO L124 PetriNetUnfolderBase]: 1253/2780 cut-off events. [2023-08-25 22:18:48,665 INFO L125 PetriNetUnfolderBase]: For 2280/2280 co-relation queries the response was YES. [2023-08-25 22:18:48,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7530 conditions, 2780 events. 1253/2780 cut-off events. For 2280/2280 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 20164 event pairs, 261 based on Foata normal form. 4/2773 useless extension candidates. Maximal degree in co-relation 7509. Up to 1017 conditions per place. [2023-08-25 22:18:48,686 INFO L140 encePairwiseOnDemand]: 291/308 looper letters, 147 selfloop transitions, 29 changer transitions 0/193 dead transitions. [2023-08-25 22:18:48,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 193 transitions, 1159 flow [2023-08-25 22:18:48,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 22:18:48,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 22:18:48,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1421 transitions. [2023-08-25 22:18:48,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548951048951049 [2023-08-25 22:18:48,689 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1421 transitions. [2023-08-25 22:18:48,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1421 transitions. [2023-08-25 22:18:48,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:48,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1421 transitions. [2023-08-25 22:18:48,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 109.3076923076923) internal successors, (1421), 13 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states 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 22:18:48,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 308.0) internal successors, (4312), 14 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states 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 22:18:48,697 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 308.0) internal successors, (4312), 14 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states 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 22:18:48,697 INFO L175 Difference]: Start difference. First operand has 102 places, 89 transitions, 395 flow. Second operand 13 states and 1421 transitions. [2023-08-25 22:18:48,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 193 transitions, 1159 flow [2023-08-25 22:18:48,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 193 transitions, 1145 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-25 22:18:48,704 INFO L231 Difference]: Finished difference. Result has 116 places, 94 transitions, 487 flow [2023-08-25 22:18:48,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=487, PETRI_PLACES=116, PETRI_TRANSITIONS=94} [2023-08-25 22:18:48,705 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, -5 predicate places. [2023-08-25 22:18:48,705 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 94 transitions, 487 flow [2023-08-25 22:18:48,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 100.6923076923077) internal successors, (1309), 13 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states 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 22:18:48,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:48,706 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 22:18:48,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 22:18:48,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 22:18:48,911 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err15ASSERT_VIOLATIONASSERT === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 22:18:48,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:48,911 INFO L85 PathProgramCache]: Analyzing trace with hash -577402019, now seen corresponding path program 1 times [2023-08-25 22:18:48,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:48,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769460114] [2023-08-25 22:18:48,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:48,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:49,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 22:18:49,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:49,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769460114] [2023-08-25 22:18:49,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769460114] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:49,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:49,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-25 22:18:49,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720714196] [2023-08-25 22:18:49,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:49,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 22:18:49,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:49,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 22:18:49,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-25 22:18:49,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 308 [2023-08-25 22:18:49,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 94 transitions, 487 flow. Second operand has 7 states, 7 states have (on average 100.28571428571429) internal successors, (702), 7 states have internal predecessors, (702), 0 states have call successors, (0), 0 states 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 22:18:49,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:49,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 308 [2023-08-25 22:18:49,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:49,412 INFO L124 PetriNetUnfolderBase]: 1084/2398 cut-off events. [2023-08-25 22:18:49,412 INFO L125 PetriNetUnfolderBase]: For 2479/2479 co-relation queries the response was YES. [2023-08-25 22:18:49,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6809 conditions, 2398 events. 1084/2398 cut-off events. For 2479/2479 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16584 event pairs, 280 based on Foata normal form. 4/2397 useless extension candidates. Maximal degree in co-relation 6786. Up to 924 conditions per place. [2023-08-25 22:18:49,423 INFO L140 encePairwiseOnDemand]: 296/308 looper letters, 134 selfloop transitions, 14 changer transitions 0/165 dead transitions. [2023-08-25 22:18:49,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 165 transitions, 1058 flow [2023-08-25 22:18:49,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 22:18:49,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 22:18:49,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1003 transitions. [2023-08-25 22:18:49,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36183261183261184 [2023-08-25 22:18:49,426 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1003 transitions. [2023-08-25 22:18:49,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1003 transitions. [2023-08-25 22:18:49,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:49,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1003 transitions. [2023-08-25 22:18:49,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 111.44444444444444) internal successors, (1003), 9 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states 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 22:18:49,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 308.0) internal successors, (3080), 10 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states 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 22:18:49,435 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 308.0) internal successors, (3080), 10 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states 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 22:18:49,435 INFO L175 Difference]: Start difference. First operand has 116 places, 94 transitions, 487 flow. Second operand 9 states and 1003 transitions. [2023-08-25 22:18:49,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 165 transitions, 1058 flow [2023-08-25 22:18:49,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 165 transitions, 996 flow, removed 9 selfloop flow, removed 11 redundant places. [2023-08-25 22:18:49,443 INFO L231 Difference]: Finished difference. Result has 116 places, 96 transitions, 474 flow [2023-08-25 22:18:49,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=474, PETRI_PLACES=116, PETRI_TRANSITIONS=96} [2023-08-25 22:18:49,446 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, -5 predicate places. [2023-08-25 22:18:49,446 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 96 transitions, 474 flow [2023-08-25 22:18:49,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 100.28571428571429) internal successors, (702), 7 states have internal predecessors, (702), 0 states have call successors, (0), 0 states 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 22:18:49,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:49,446 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 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 22:18:49,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-25 22:18:49,447 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thr1Err15ASSERT_VIOLATIONASSERT === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 22:18:49,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:49,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1700526922, now seen corresponding path program 1 times [2023-08-25 22:18:49,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:49,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785130476] [2023-08-25 22:18:49,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:49,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:49,552 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 22:18:49,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:49,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785130476] [2023-08-25 22:18:49,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785130476] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 22:18:49,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738040908] [2023-08-25 22:18:49,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:49,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 22:18:49,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 22:18:49,554 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 22:18:49,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 22:18:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:49,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-25 22:18:49,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 22:18:49,705 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 22:18:49,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 22:18:49,798 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 22:18:49,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738040908] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 22:18:49,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 22:18:49,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-25 22:18:49,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347887495] [2023-08-25 22:18:49,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 22:18:49,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 22:18:49,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:49,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 22:18:49,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-08-25 22:18:49,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 308 [2023-08-25 22:18:49,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 96 transitions, 474 flow. Second operand has 13 states, 13 states have (on average 100.92307692307692) internal successors, (1312), 13 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states 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 22:18:49,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:49,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 308 [2023-08-25 22:18:49,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:50,423 INFO L124 PetriNetUnfolderBase]: 969/2165 cut-off events. [2023-08-25 22:18:50,424 INFO L125 PetriNetUnfolderBase]: For 1685/1685 co-relation queries the response was YES. [2023-08-25 22:18:50,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6001 conditions, 2165 events. 969/2165 cut-off events. For 1685/1685 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14736 event pairs, 205 based on Foata normal form. 2/2158 useless extension candidates. Maximal degree in co-relation 5977. Up to 847 conditions per place. [2023-08-25 22:18:50,437 INFO L140 encePairwiseOnDemand]: 291/308 looper letters, 131 selfloop transitions, 31 changer transitions 0/179 dead transitions. [2023-08-25 22:18:50,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 179 transitions, 1121 flow [2023-08-25 22:18:50,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 22:18:50,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 22:18:50,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1403 transitions. [2023-08-25 22:18:50,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3503996003996004 [2023-08-25 22:18:50,440 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1403 transitions. [2023-08-25 22:18:50,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1403 transitions. [2023-08-25 22:18:50,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:50,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1403 transitions. [2023-08-25 22:18:50,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 107.92307692307692) internal successors, (1403), 13 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states 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 22:18:50,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 308.0) internal successors, (4312), 14 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states 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 22:18:50,447 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 308.0) internal successors, (4312), 14 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states 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 22:18:50,448 INFO L175 Difference]: Start difference. First operand has 116 places, 96 transitions, 474 flow. Second operand 13 states and 1403 transitions. [2023-08-25 22:18:50,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 179 transitions, 1121 flow [2023-08-25 22:18:50,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 179 transitions, 1093 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-25 22:18:50,457 INFO L231 Difference]: Finished difference. Result has 126 places, 100 transitions, 558 flow [2023-08-25 22:18:50,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=558, PETRI_PLACES=126, PETRI_TRANSITIONS=100} [2023-08-25 22:18:50,458 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 5 predicate places. [2023-08-25 22:18:50,458 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 100 transitions, 558 flow [2023-08-25 22:18:50,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 100.92307692307692) internal successors, (1312), 13 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states 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 22:18:50,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:50,459 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 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 22:18:50,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 22:18:50,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 22:18:50,664 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thr1Err15ASSERT_VIOLATIONASSERT === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 22:18:50,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:50,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1557942543, now seen corresponding path program 1 times [2023-08-25 22:18:50,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:50,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215063635] [2023-08-25 22:18:50,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:50,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-25 22:18:50,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:50,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215063635] [2023-08-25 22:18:50,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215063635] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:50,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:50,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-25 22:18:50,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296062696] [2023-08-25 22:18:50,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:50,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 22:18:50,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:50,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 22:18:50,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-25 22:18:50,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 308 [2023-08-25 22:18:50,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 100 transitions, 558 flow. Second operand has 7 states, 7 states have (on average 100.42857142857143) internal successors, (703), 7 states have internal predecessors, (703), 0 states have call successors, (0), 0 states 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 22:18:50,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:50,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 308 [2023-08-25 22:18:50,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:51,123 INFO L124 PetriNetUnfolderBase]: 842/1875 cut-off events. [2023-08-25 22:18:51,123 INFO L125 PetriNetUnfolderBase]: For 1863/1863 co-relation queries the response was YES. [2023-08-25 22:18:51,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5342 conditions, 1875 events. 842/1875 cut-off events. For 1863/1863 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 12056 event pairs, 244 based on Foata normal form. 2/1868 useless extension candidates. Maximal degree in co-relation 5316. Up to 810 conditions per place. [2023-08-25 22:18:51,131 INFO L140 encePairwiseOnDemand]: 296/308 looper letters, 111 selfloop transitions, 14 changer transitions 0/142 dead transitions. [2023-08-25 22:18:51,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 142 transitions, 969 flow [2023-08-25 22:18:51,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 22:18:51,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 22:18:51,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 977 transitions. [2023-08-25 22:18:51,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35245310245310246 [2023-08-25 22:18:51,133 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 977 transitions. [2023-08-25 22:18:51,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 977 transitions. [2023-08-25 22:18:51,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:51,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 977 transitions. [2023-08-25 22:18:51,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 108.55555555555556) internal successors, (977), 9 states have internal predecessors, (977), 0 states have call successors, (0), 0 states 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 22:18:51,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 308.0) internal successors, (3080), 10 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states 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 22:18:51,137 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 308.0) internal successors, (3080), 10 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states 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 22:18:51,137 INFO L175 Difference]: Start difference. First operand has 126 places, 100 transitions, 558 flow. Second operand 9 states and 977 transitions. [2023-08-25 22:18:51,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 142 transitions, 969 flow [2023-08-25 22:18:51,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 142 transitions, 940 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-25 22:18:51,144 INFO L231 Difference]: Finished difference. Result has 131 places, 102 transitions, 582 flow [2023-08-25 22:18:51,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=582, PETRI_PLACES=131, PETRI_TRANSITIONS=102} [2023-08-25 22:18:51,145 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 10 predicate places. [2023-08-25 22:18:51,145 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 102 transitions, 582 flow [2023-08-25 22:18:51,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 100.42857142857143) internal successors, (703), 7 states have internal predecessors, (703), 0 states have call successors, (0), 0 states 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 22:18:51,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:51,146 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 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 22:18:51,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-25 22:18:51,146 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thr1Err15ASSERT_VIOLATIONASSERT === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 22:18:51,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:51,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1087910445, now seen corresponding path program 1 times [2023-08-25 22:18:51,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:51,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786465536] [2023-08-25 22:18:51,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:51,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:51,234 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 22:18:51,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:51,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786465536] [2023-08-25 22:18:51,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786465536] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 22:18:51,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554985681] [2023-08-25 22:18:51,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:51,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 22:18:51,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 22:18:51,236 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 22:18:51,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 22:18:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:51,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-25 22:18:51,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 22:18:51,385 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 22:18:51,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 22:18:51,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 22:18:51,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554985681] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 22:18:51,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 22:18:51,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-25 22:18:51,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068859096] [2023-08-25 22:18:51,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 22:18:51,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 22:18:51,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:51,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 22:18:51,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-08-25 22:18:51,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 308 [2023-08-25 22:18:51,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 102 transitions, 582 flow. Second operand has 13 states, 13 states have (on average 100.76923076923077) internal successors, (1310), 13 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states 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 22:18:51,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:51,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 308 [2023-08-25 22:18:51,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:52,025 INFO L124 PetriNetUnfolderBase]: 727/1639 cut-off events. [2023-08-25 22:18:52,025 INFO L125 PetriNetUnfolderBase]: For 1655/1655 co-relation queries the response was YES. [2023-08-25 22:18:52,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4692 conditions, 1639 events. 727/1639 cut-off events. For 1655/1655 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10255 event pairs, 171 based on Foata normal form. 0/1628 useless extension candidates. Maximal degree in co-relation 4662. Up to 733 conditions per place. [2023-08-25 22:18:52,033 INFO L140 encePairwiseOnDemand]: 291/308 looper letters, 111 selfloop transitions, 33 changer transitions 1/162 dead transitions. [2023-08-25 22:18:52,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 162 transitions, 1125 flow [2023-08-25 22:18:52,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 22:18:52,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 22:18:52,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1382 transitions. [2023-08-25 22:18:52,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3451548451548452 [2023-08-25 22:18:52,045 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1382 transitions. [2023-08-25 22:18:52,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1382 transitions. [2023-08-25 22:18:52,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:52,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1382 transitions. [2023-08-25 22:18:52,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 106.3076923076923) internal successors, (1382), 13 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states 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 22:18:52,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 308.0) internal successors, (4312), 14 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states 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 22:18:52,051 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 308.0) internal successors, (4312), 14 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states 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 22:18:52,051 INFO L175 Difference]: Start difference. First operand has 131 places, 102 transitions, 582 flow. Second operand 13 states and 1382 transitions. [2023-08-25 22:18:52,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 162 transitions, 1125 flow [2023-08-25 22:18:52,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 162 transitions, 1093 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-25 22:18:52,059 INFO L231 Difference]: Finished difference. Result has 141 places, 107 transitions, 690 flow [2023-08-25 22:18:52,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=690, PETRI_PLACES=141, PETRI_TRANSITIONS=107} [2023-08-25 22:18:52,060 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 20 predicate places. [2023-08-25 22:18:52,060 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 107 transitions, 690 flow [2023-08-25 22:18:52,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 100.76923076923077) internal successors, (1310), 13 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states 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 22:18:52,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:52,061 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 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 22:18:52,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-25 22:18:52,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 22:18:52,265 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thr1Err15ASSERT_VIOLATIONASSERT === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 22:18:52,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:52,266 INFO L85 PathProgramCache]: Analyzing trace with hash -2061141525, now seen corresponding path program 1 times [2023-08-25 22:18:52,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:52,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643365550] [2023-08-25 22:18:52,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:52,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:52,360 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-25 22:18:52,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:52,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643365550] [2023-08-25 22:18:52,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643365550] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:52,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:52,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-25 22:18:52,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447450182] [2023-08-25 22:18:52,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:52,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 22:18:52,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:52,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 22:18:52,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-25 22:18:52,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 308 [2023-08-25 22:18:52,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 107 transitions, 690 flow. Second operand has 7 states, 7 states have (on average 100.57142857142857) internal successors, (704), 7 states have internal predecessors, (704), 0 states have call successors, (0), 0 states 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 22:18:52,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:52,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 308 [2023-08-25 22:18:52,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:52,656 INFO L124 PetriNetUnfolderBase]: 590/1339 cut-off events. [2023-08-25 22:18:52,656 INFO L125 PetriNetUnfolderBase]: For 1903/1903 co-relation queries the response was YES. [2023-08-25 22:18:52,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3973 conditions, 1339 events. 590/1339 cut-off events. For 1903/1903 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7876 event pairs, 146 based on Foata normal form. 0/1332 useless extension candidates. Maximal degree in co-relation 3941. Up to 650 conditions per place. [2023-08-25 22:18:52,662 INFO L140 encePairwiseOnDemand]: 296/308 looper letters, 109 selfloop transitions, 14 changer transitions 1/141 dead transitions. [2023-08-25 22:18:52,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 141 transitions, 1073 flow [2023-08-25 22:18:52,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 22:18:52,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 22:18:52,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 971 transitions. [2023-08-25 22:18:52,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3502886002886003 [2023-08-25 22:18:52,663 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 971 transitions. [2023-08-25 22:18:52,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 971 transitions. [2023-08-25 22:18:52,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:52,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 971 transitions. [2023-08-25 22:18:52,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 0 states have call successors, (0), 0 states 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 22:18:52,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 308.0) internal successors, (3080), 10 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states 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 22:18:52,667 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 308.0) internal successors, (3080), 10 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states 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 22:18:52,667 INFO L175 Difference]: Start difference. First operand has 141 places, 107 transitions, 690 flow. Second operand 9 states and 971 transitions. [2023-08-25 22:18:52,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 141 transitions, 1073 flow [2023-08-25 22:18:52,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 141 transitions, 1042 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-08-25 22:18:52,675 INFO L231 Difference]: Finished difference. Result has 146 places, 109 transitions, 712 flow [2023-08-25 22:18:52,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=712, PETRI_PLACES=146, PETRI_TRANSITIONS=109} [2023-08-25 22:18:52,676 INFO L281 CegarLoopForPetriNet]: 121 programPoint places, 25 predicate places. [2023-08-25 22:18:52,676 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 109 transitions, 712 flow [2023-08-25 22:18:52,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 100.57142857142857) internal successors, (704), 7 states have internal predecessors, (704), 0 states have call successors, (0), 0 states 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 22:18:52,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:52,676 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:52,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-25 22:18:52,677 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thr1Err15ASSERT_VIOLATIONASSERT === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err15ASSERT_VIOLATIONASSERT, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 22:18:52,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:52,677 INFO L85 PathProgramCache]: Analyzing trace with hash -795988984, now seen corresponding path program 1 times [2023-08-25 22:18:52,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:52,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2577395] [2023-08-25 22:18:52,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:52,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:18:52,690 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 22:18:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:18:52,708 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 22:18:52,709 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 22:18:52,709 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err15ASSERT_VIOLATIONASSERT (63 of 64 remaining) [2023-08-25 22:18:52,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (62 of 64 remaining) [2023-08-25 22:18:52,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (61 of 64 remaining) [2023-08-25 22:18:52,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (60 of 64 remaining) [2023-08-25 22:18:52,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (59 of 64 remaining) [2023-08-25 22:18:52,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (58 of 64 remaining) [2023-08-25 22:18:52,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (57 of 64 remaining) [2023-08-25 22:18:52,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (56 of 64 remaining) [2023-08-25 22:18:52,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (55 of 64 remaining) [2023-08-25 22:18:52,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (54 of 64 remaining) [2023-08-25 22:18:52,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (53 of 64 remaining) [2023-08-25 22:18:52,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (52 of 64 remaining) [2023-08-25 22:18:52,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (51 of 64 remaining) [2023-08-25 22:18:52,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (50 of 64 remaining) [2023-08-25 22:18:52,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (49 of 64 remaining) [2023-08-25 22:18:52,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (48 of 64 remaining) [2023-08-25 22:18:52,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (47 of 64 remaining) [2023-08-25 22:18:52,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (46 of 64 remaining) [2023-08-25 22:18:52,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (45 of 64 remaining) [2023-08-25 22:18:52,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (44 of 64 remaining) [2023-08-25 22:18:52,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (43 of 64 remaining) [2023-08-25 22:18:52,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONASSERT (42 of 64 remaining) [2023-08-25 22:18:52,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (41 of 64 remaining) [2023-08-25 22:18:52,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (40 of 64 remaining) [2023-08-25 22:18:52,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (39 of 64 remaining) [2023-08-25 22:18:52,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (38 of 64 remaining) [2023-08-25 22:18:52,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (37 of 64 remaining) [2023-08-25 22:18:52,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (36 of 64 remaining) [2023-08-25 22:18:52,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (35 of 64 remaining) [2023-08-25 22:18:52,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (34 of 64 remaining) [2023-08-25 22:18:52,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (33 of 64 remaining) [2023-08-25 22:18:52,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (32 of 64 remaining) [2023-08-25 22:18:52,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (31 of 64 remaining) [2023-08-25 22:18:52,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (30 of 64 remaining) [2023-08-25 22:18:52,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (29 of 64 remaining) [2023-08-25 22:18:52,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (28 of 64 remaining) [2023-08-25 22:18:52,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 64 remaining) [2023-08-25 22:18:52,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONASSERT (26 of 64 remaining) [2023-08-25 22:18:52,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (25 of 64 remaining) [2023-08-25 22:18:52,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (24 of 64 remaining) [2023-08-25 22:18:52,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 64 remaining) [2023-08-25 22:18:52,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (22 of 64 remaining) [2023-08-25 22:18:52,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (21 of 64 remaining) [2023-08-25 22:18:52,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (20 of 64 remaining) [2023-08-25 22:18:52,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 64 remaining) [2023-08-25 22:18:52,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (18 of 64 remaining) [2023-08-25 22:18:52,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 64 remaining) [2023-08-25 22:18:52,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONASSERT (16 of 64 remaining) [2023-08-25 22:18:52,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (15 of 64 remaining) [2023-08-25 22:18:52,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 64 remaining) [2023-08-25 22:18:52,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (13 of 64 remaining) [2023-08-25 22:18:52,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (12 of 64 remaining) [2023-08-25 22:18:52,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (11 of 64 remaining) [2023-08-25 22:18:52,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 64 remaining) [2023-08-25 22:18:52,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (9 of 64 remaining) [2023-08-25 22:18:52,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (8 of 64 remaining) [2023-08-25 22:18:52,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (7 of 64 remaining) [2023-08-25 22:18:52,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (6 of 64 remaining) [2023-08-25 22:18:52,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 64 remaining) [2023-08-25 22:18:52,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 64 remaining) [2023-08-25 22:18:52,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (3 of 64 remaining) [2023-08-25 22:18:52,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (2 of 64 remaining) [2023-08-25 22:18:52,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 64 remaining) [2023-08-25 22:18:52,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (0 of 64 remaining) [2023-08-25 22:18:52,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-25 22:18:52,714 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:52,715 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-25 22:18:52,717 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2023-08-25 22:18:52,717 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 22:18:52,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 10:18:52 BasicIcfg [2023-08-25 22:18:52,776 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 22:18:52,776 INFO L158 Benchmark]: Toolchain (without parser) took 45429.39ms. Allocated memory was 394.3MB in the beginning and 13.4GB in the end (delta: 13.0GB). Free memory was 369.3MB in the beginning and 10.4GB in the end (delta: -10.0GB). Peak memory consumption was 3.0GB. Max. memory is 16.0GB. [2023-08-25 22:18:52,776 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 394.3MB. Free memory is still 370.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 22:18:52,776 INFO L158 Benchmark]: CACSL2BoogieTranslator took 476.98ms. Allocated memory is still 394.3MB. Free memory was 369.3MB in the beginning and 349.3MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-25 22:18:52,777 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.35ms. Allocated memory is still 394.3MB. Free memory was 349.3MB in the beginning and 346.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 22:18:52,777 INFO L158 Benchmark]: Boogie Preprocessor took 42.17ms. Allocated memory is still 394.3MB. Free memory was 346.9MB in the beginning and 345.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 22:18:52,777 INFO L158 Benchmark]: RCFGBuilder took 506.12ms. Allocated memory is still 394.3MB. Free memory was 345.5MB in the beginning and 320.4MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-25 22:18:52,777 INFO L158 Benchmark]: TraceAbstraction took 44334.42ms. Allocated memory was 394.3MB in the beginning and 13.4GB in the end (delta: 13.0GB). Free memory was 319.7MB in the beginning and 10.4GB in the end (delta: -10.1GB). Peak memory consumption was 3.0GB. Max. memory is 16.0GB. [2023-08-25 22:18:52,778 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 394.3MB. Free memory is still 370.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 476.98ms. Allocated memory is still 394.3MB. Free memory was 369.3MB in the beginning and 349.3MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 64.35ms. Allocated memory is still 394.3MB. Free memory was 349.3MB in the beginning and 346.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 42.17ms. Allocated memory is still 394.3MB. Free memory was 346.9MB in the beginning and 345.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 506.12ms. Allocated memory is still 394.3MB. Free memory was 345.5MB in the beginning and 320.4MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 44334.42ms. Allocated memory was 394.3MB in the beginning and 13.4GB in the end (delta: 13.0GB). Free memory was 319.7MB in the beginning and 10.4GB in the end (delta: -10.1GB). Peak memory consumption was 3.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 269]: Unsoundness Warning unspecified type, defaulting to int C: short [269] - GenericResultAtLocation [Line: 269]: Unsoundness Warning unspecified type, defaulting to int C: short [269] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 79 PlacesBefore, 26 PlacesAfterwards, 80 TransitionsBefore, 23 TransitionsAfterwards, 1378 CoEnabledTransitionPairs, 9 FixpointIterations, 12 TrivialSequentialCompositions, 89 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 113 TotalNumberOfCompositions, 1620 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1620, independent: 1620, independent conditional: 0, independent unconditional: 1620, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 709, independent: 709, independent conditional: 0, independent unconditional: 709, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1620, independent: 911, independent conditional: 0, independent unconditional: 911, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 709, unknown conditional: 0, unknown unconditional: 709] , Statistics on independence cache: Total cache size (in pairs): 17, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 79 PlacesBefore, 26 PlacesAfterwards, 80 TransitionsBefore, 23 TransitionsAfterwards, 1378 CoEnabledTransitionPairs, 7 FixpointIterations, 12 TrivialSequentialCompositions, 82 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 106 TotalNumberOfCompositions, 1484 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1484, independent: 1484, independent conditional: 0, independent unconditional: 1484, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 677, independent: 677, independent conditional: 0, independent unconditional: 677, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1484, independent: 807, independent conditional: 0, independent unconditional: 807, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 677, unknown conditional: 0, unknown unconditional: 677] , Statistics on independence cache: Total cache size (in pairs): 17, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.1s, 132 PlacesBefore, 83 PlacesAfterwards, 134 TransitionsBefore, 80 TransitionsAfterwards, 8480 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 58 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 5 ChoiceCompositions, 87 TotalNumberOfCompositions, 38882 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14789, independent: 14118, independent conditional: 0, independent unconditional: 14118, dependent: 671, dependent conditional: 0, dependent unconditional: 671, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4582, independent: 4470, independent conditional: 0, independent unconditional: 4470, dependent: 112, dependent conditional: 0, dependent unconditional: 112, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 14789, independent: 9648, independent conditional: 0, independent unconditional: 9648, dependent: 559, dependent conditional: 0, dependent unconditional: 559, unknown: 4582, unknown conditional: 0, unknown unconditional: 4582] , Statistics on independence cache: Total cache size (in pairs): 981, Positive cache size: 914, Positive conditional cache size: 0, Positive unconditional cache size: 914, Negative cache size: 67, Negative conditional cache size: 0, Negative unconditional cache size: 67, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.0s, 132 PlacesBefore, 83 PlacesAfterwards, 134 TransitionsBefore, 80 TransitionsAfterwards, 8480 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 58 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 5 ChoiceCompositions, 87 TotalNumberOfCompositions, 38882 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12848, independent: 12177, independent conditional: 0, independent unconditional: 12177, dependent: 671, dependent conditional: 0, dependent unconditional: 671, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4339, independent: 4234, independent conditional: 0, independent unconditional: 4234, dependent: 105, dependent conditional: 0, dependent unconditional: 105, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12848, independent: 7943, independent conditional: 0, independent unconditional: 7943, dependent: 566, dependent conditional: 0, dependent unconditional: 566, unknown: 4339, unknown conditional: 0, unknown unconditional: 4339] , Statistics on independence cache: Total cache size (in pairs): 816, Positive cache size: 752, Positive conditional cache size: 0, Positive unconditional cache size: 752, Negative cache size: 64, Negative conditional cache size: 0, Negative unconditional cache size: 64, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.3s, 185 PlacesBefore, 121 PlacesAfterwards, 188 TransitionsBefore, 117 TransitionsAfterwards, 21306 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 82 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 19 ConcurrentYvCompositions, 7 ChoiceCompositions, 120 TotalNumberOfCompositions, 104036 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 28214, independent: 27222, independent conditional: 0, independent unconditional: 27222, dependent: 992, dependent conditional: 0, dependent unconditional: 992, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 10087, independent: 9926, independent conditional: 0, independent unconditional: 9926, dependent: 161, dependent conditional: 0, dependent unconditional: 161, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 28214, independent: 17296, independent conditional: 0, independent unconditional: 17296, dependent: 831, dependent conditional: 0, dependent unconditional: 831, unknown: 10087, unknown conditional: 0, unknown unconditional: 10087] , Statistics on independence cache: Total cache size (in pairs): 1506, Positive cache size: 1398, Positive conditional cache size: 0, Positive unconditional cache size: 1398, Negative cache size: 108, Negative conditional cache size: 0, Negative unconditional cache size: 108, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 16]: assertion can be violated assertion can be violated We found a FailurePath: [L704] 0 volatile unsigned int count = 0; [L705] 0 _Bool MTX = 0; [L706] 0 _Bool COND = 0; [L732] 0 pthread_t t; VAL [COND=0, MTX=0, count=0, t={3:0}] [L733] COND TRUE 0 1 [L733] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [COND=0, MTX=0, count=0, pthread_create(&t, 0, thr1, 0)=-3, t={3:0}] [L733] COND TRUE 0 1 [L727] CALL 1 Barrier2() [L718] CALL 1 __VERIFIER_atomic_acquire() [L709] EXPR 1 MTX==0 [L709] CALL 1 assume_abort_if_not(MTX==0) [L3] COND FALSE 1 !(!cond) [L709] RET 1 assume_abort_if_not(MTX==0) [L710] 1 MTX = 1 [L718] RET 1 __VERIFIER_atomic_acquire() [L719] 1 count++ VAL [COND=0, MTX=1, count++=0, count=0] [L733] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [COND=0, MTX=1, count=0, pthread_create(&t, 0, thr1, 0)=-2, t={3:0}] [L733] COND TRUE 0 1 [L733] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [COND=0, MTX=1, count=0, pthread_create(&t, 0, thr1, 0)=-1, t={3:0}] [L719] 1 count++ [L720] 1 count == 3 VAL [COND=0, MTX=1, count=1] [L720] COND FALSE 1 !(count == 3) VAL [COND=0, MTX=1, count=1] [L724] CALL 1 __VERIFIER_atomic_release() [L714] EXPR 1 MTX==1 [L714] CALL 1 assume_abort_if_not(MTX==1) [L3] COND FALSE 1 !(!cond) [L714] RET 1 assume_abort_if_not(MTX==1) [L715] 1 MTX = 0 [L724] RET 1 __VERIFIER_atomic_release() [L727] CALL 2 Barrier2() [L718] CALL 2 __VERIFIER_atomic_acquire() [L709] EXPR 2 MTX==0 [L709] CALL 2 assume_abort_if_not(MTX==0) [L3] COND FALSE 2 !(!cond) [L709] RET 2 assume_abort_if_not(MTX==0) [L710] 2 MTX = 1 [L718] RET 2 __VERIFIER_atomic_acquire() [L719] 2 count++ [L720] 2 count == 3 VAL [COND=0, MTX=1, count=2] [L720] COND FALSE 2 !(count == 3) VAL [COND=0, MTX=1, count=2] [L724] CALL 2 __VERIFIER_atomic_release() [L714] EXPR 2 MTX==1 [L714] CALL 2 assume_abort_if_not(MTX==1) [L3] COND FALSE 2 !(!cond) [L714] RET 2 assume_abort_if_not(MTX==1) [L715] 2 MTX = 0 [L724] RET 2 __VERIFIER_atomic_release() [L727] CALL 3 Barrier2() [L718] CALL 3 __VERIFIER_atomic_acquire() [L709] EXPR 3 MTX==0 [L709] CALL 3 assume_abort_if_not(MTX==0) [L3] COND FALSE 3 !(!cond) [L709] RET 3 assume_abort_if_not(MTX==0) [L710] 3 MTX = 1 [L718] RET 3 __VERIFIER_atomic_acquire() [L719] 3 count++ [L720] 3 count == 3 VAL [COND=0, MTX=1, count=3] [L720] COND TRUE 3 count == 3 VAL [COND=0, MTX=1, count=3] [L721] 3 COND = 1 VAL [COND=1, MTX=1, count=3] [L722] 3 count = 0 VAL [COND=1, MTX=1, count=0] [L725] CALL 3 __VERIFIER_atomic_release() [L714] EXPR 3 MTX==1 [L714] CALL 3 assume_abort_if_not(MTX==1) [L3] COND FALSE 3 !(!cond) [L714] RET 3 assume_abort_if_not(MTX==1) [L715] 3 MTX = 0 [L725] RET 3 __VERIFIER_atomic_release() [L727] RET 3 Barrier2() [L728] CALL 3 reach_error() [L16] COND FALSE 3 !(0) [L16] 3 __assert_fail ("0", "40_barrier_vf.c", 7, __extension__ __PRETTY_FUNCTION__) VAL [COND=1, MTX=0, count=0] - UnprovableResult [Line: 719]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 715]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 710]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 710]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 709]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 724]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 724]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 709]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 715]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 721]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 128 locations, 33 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: 3.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 0.2s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 51 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 179 locations, 49 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.7s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 260 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 260 mSDsluCounter, 88 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1100 IncrementalHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 78 mSDtfsCounter, 1100 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=414occurred in iteration=4, InterpolantAutomatonStates: 57, 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, 0.9s InterpolantComputationTime, 245 NumberOfCodeBlocks, 245 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 264 ConstructedInterpolants, 0 QuantifiedInterpolants, 1135 SizeOfPredicates, 5 NumberOfNonLiveVariables, 151 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 14 InterpolantComputations, 11 PerfectInterpolantSequences, 13/16 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 - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 230 locations, 65 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: 32.8s, OverallIterations: 20, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 28.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1259 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1259 mSDsluCounter, 339 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 147 mSDsCounter, 120 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4447 IncrementalHoareTripleChecker+Invalid, 4567 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 120 mSolverCounterUnsat, 192 mSDtfsCounter, 4447 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 315 GetRequests, 207 SyntacticMatches, 3 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=805occurred in iteration=4, InterpolantAutomatonStates: 113, 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: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 584 NumberOfCodeBlocks, 584 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 618 ConstructedInterpolants, 0 QuantifiedInterpolants, 2707 SizeOfPredicates, 15 NumberOfNonLiveVariables, 489 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 25 InterpolantComputations, 16 PerfectInterpolantSequences, 77/104 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 128 locations, 33 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: 2.4s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 179 locations, 49 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: 1.0s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-25 22:18:52,801 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...