/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/45_monabsex1_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 22:18:45,979 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 22:18:46,045 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 22:18:46,050 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 22:18:46,051 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 22:18:46,073 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 22:18:46,074 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 22:18:46,074 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 22:18:46,075 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 22:18:46,078 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 22:18:46,078 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 22:18:46,078 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 22:18:46,078 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 22:18:46,079 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 22:18:46,079 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 22:18:46,079 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 22:18:46,079 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 22:18:46,080 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 22:18:46,080 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 22:18:46,080 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 22:18:46,080 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 22:18:46,081 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 22:18:46,081 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 22:18:46,081 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 22:18:46,082 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 22:18:46,082 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 22:18:46,082 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 22:18:46,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 22:18:46,082 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 22:18:46,082 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 22:18:46,083 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 22:18:46,083 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 22:18:46,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 22:18:46,083 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 22:18:46,083 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 22:18:46,084 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 22:18:46,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 22:18:46,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 22:18:46,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 22:18:46,353 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 22:18:46,354 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 22:18:46,355 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i [2023-08-25 22:18:47,283 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 22:18:47,522 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 22:18:47,522 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i [2023-08-25 22:18:47,537 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/330731507/dcc46f9e81cc4f0c8925d159068092e7/FLAG588f5ede9 [2023-08-25 22:18:47,545 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/330731507/dcc46f9e81cc4f0c8925d159068092e7 [2023-08-25 22:18:47,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 22:18:47,548 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 22:18:47,548 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 22:18:47,548 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 22:18:47,550 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 22:18:47,550 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 10:18:47" (1/1) ... [2023-08-25 22:18:47,551 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7016f8be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:47, skipping insertion in model container [2023-08-25 22:18:47,551 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 10:18:47" (1/1) ... [2023-08-25 22:18:47,576 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 22:18:47,705 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-25 22:18:47,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 22:18:47,814 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 22:18:47,829 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-25 22:18:47,841 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [266] [2023-08-25 22:18:47,842 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [266] [2023-08-25 22:18:47,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 22:18:47,877 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 22:18:47,877 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 22:18:47,877 WARN L669 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 22:18:47,881 INFO L206 MainTranslator]: Completed translation [2023-08-25 22:18:47,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:47 WrapperNode [2023-08-25 22:18:47,882 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 22:18:47,882 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 22:18:47,883 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 22:18:47,883 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 22:18:47,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:47" (1/1) ... [2023-08-25 22:18:47,908 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:47" (1/1) ... [2023-08-25 22:18:47,919 INFO L138 Inliner]: procedures = 171, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2023-08-25 22:18:47,920 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 22:18:47,920 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 22:18:47,920 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 22:18:47,920 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 22:18:47,926 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:47" (1/1) ... [2023-08-25 22:18:47,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:47" (1/1) ... [2023-08-25 22:18:47,930 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:47" (1/1) ... [2023-08-25 22:18:47,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:47" (1/1) ... [2023-08-25 22:18:47,942 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:47" (1/1) ... [2023-08-25 22:18:47,943 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:47" (1/1) ... [2023-08-25 22:18:47,944 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:47" (1/1) ... [2023-08-25 22:18:47,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:47" (1/1) ... [2023-08-25 22:18:47,946 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 22:18:47,946 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 22:18:47,946 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 22:18:47,946 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 22:18:47,947 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:47" (1/1) ... [2023-08-25 22:18:47,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 22:18:47,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 22:18:47,981 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 22:18:47,993 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 22:18:48,005 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-25 22:18:48,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-25 22:18:48,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 22:18:48,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 22:18:48,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 22:18:48,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 22:18:48,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 22:18:48,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 22:18:48,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 22:18:48,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 22:18:48,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 22:18:48,007 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 22:18:48,097 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 22:18:48,099 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 22:18:48,178 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 22:18:48,205 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 22:18:48,205 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-25 22:18:48,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 10:18:48 BoogieIcfgContainer [2023-08-25 22:18:48,207 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 22:18:48,208 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 22:18:48,208 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 22:18:48,211 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 22:18:48,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 10:18:47" (1/3) ... [2023-08-25 22:18:48,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a7ce0e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 10:18:48, skipping insertion in model container [2023-08-25 22:18:48,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:18:47" (2/3) ... [2023-08-25 22:18:48,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a7ce0e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 10:18:48, skipping insertion in model container [2023-08-25 22:18:48,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 10:18:48" (3/3) ... [2023-08-25 22:18:48,212 INFO L112 eAbstractionObserver]: Analyzing ICFG 45_monabsex1_vs.i [2023-08-25 22:18:48,225 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 22:18:48,225 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-25 22:18:48,225 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 22:18:48,251 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 22:18:48,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 47 transitions, 99 flow [2023-08-25 22:18:48,294 INFO L124 PetriNetUnfolderBase]: 2/57 cut-off events. [2023-08-25 22:18:48,294 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:18:48,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 57 events. 2/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 30. Up to 4 conditions per place. [2023-08-25 22:18:48,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 47 transitions, 99 flow [2023-08-25 22:18:48,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 47 transitions, 99 flow [2023-08-25 22:18:48,301 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 22:18:48,307 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 47 transitions, 99 flow [2023-08-25 22:18:48,310 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 47 transitions, 99 flow [2023-08-25 22:18:48,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 47 transitions, 99 flow [2023-08-25 22:18:48,319 INFO L124 PetriNetUnfolderBase]: 2/57 cut-off events. [2023-08-25 22:18:48,319 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:18:48,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 57 events. 2/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 30. Up to 4 conditions per place. [2023-08-25 22:18:48,320 INFO L119 LiptonReduction]: Number of co-enabled transitions 338 [2023-08-25 22:18:49,348 INFO L134 LiptonReduction]: Checked pairs total: 353 [2023-08-25 22:18:49,349 INFO L136 LiptonReduction]: Total number of compositions: 50 [2023-08-25 22:18:49,358 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 22:18:49,362 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;@698eb58, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 22:18:49,363 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-25 22:18:49,363 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 22:18:49,364 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-25 22:18:49,364 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:18:49,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:49,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 22:18:49,364 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2023-08-25 22:18:49,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:49,368 INFO L85 PathProgramCache]: Analyzing trace with hash 237, now seen corresponding path program 1 times [2023-08-25 22:18:49,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:49,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745854494] [2023-08-25 22:18:49,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:49,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:49,439 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 22:18:49,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:49,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745854494] [2023-08-25 22:18:49,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745854494] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:49,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:49,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 22:18:49,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755680214] [2023-08-25 22:18:49,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:49,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 22:18:49,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:49,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 22:18:49,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 22:18:49,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2023-08-25 22:18:49,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 11 transitions, 27 flow. Second operand has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 22:18:49,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:49,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2023-08-25 22:18:49,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:49,475 INFO L124 PetriNetUnfolderBase]: 2/12 cut-off events. [2023-08-25 22:18:49,476 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:18:49,476 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 22:18:49,476 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2023-08-25 22:18:49,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 27 flow [2023-08-25 22:18:49,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 22:18:49,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 22:18:49,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 88 transitions. [2023-08-25 22:18:49,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4536082474226804 [2023-08-25 22:18:49,485 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 88 transitions. [2023-08-25 22:18:49,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 88 transitions. [2023-08-25 22:18:49,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:49,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 88 transitions. [2023-08-25 22:18:49,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 22:18:49,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states 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 22:18:49,491 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states 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 22:18:49,492 INFO L175 Difference]: Start difference. First operand has 14 places, 11 transitions, 27 flow. Second operand 2 states and 88 transitions. [2023-08-25 22:18:49,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 27 flow [2023-08-25 22:18:49,494 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 22:18:49,494 INFO L231 Difference]: Finished difference. Result has 10 places, 0 transitions, 0 flow [2023-08-25 22:18:49,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, 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=0, PETRI_PLACES=10, PETRI_TRANSITIONS=0} [2023-08-25 22:18:49,498 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, -4 predicate places. [2023-08-25 22:18:49,498 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 0 transitions, 0 flow [2023-08-25 22:18:49,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 22:18:49,499 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 7 remaining) [2023-08-25 22:18:49,500 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (5 of 7 remaining) [2023-08-25 22:18:49,500 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (4 of 7 remaining) [2023-08-25 22:18:49,500 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-08-25 22:18:49,500 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-08-25 22:18:49,500 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-08-25 22:18:49,500 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-08-25 22:18:49,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 22:18:49,501 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 22:18:49,502 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-25 22:18:49,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 47 transitions, 99 flow [2023-08-25 22:18:49,512 INFO L124 PetriNetUnfolderBase]: 2/57 cut-off events. [2023-08-25 22:18:49,513 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:18:49,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 57 events. 2/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 30. Up to 4 conditions per place. [2023-08-25 22:18:49,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 47 transitions, 99 flow [2023-08-25 22:18:49,513 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 40 transitions, 85 flow [2023-08-25 22:18:49,514 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 22:18:49,514 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 40 transitions, 85 flow [2023-08-25 22:18:49,514 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 40 transitions, 85 flow [2023-08-25 22:18:49,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 40 transitions, 85 flow [2023-08-25 22:18:49,519 INFO L124 PetriNetUnfolderBase]: 0/44 cut-off events. [2023-08-25 22:18:49,519 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:18:49,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 44 events. 0/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 22 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-25 22:18:49,519 INFO L119 LiptonReduction]: Number of co-enabled transitions 182 [2023-08-25 22:18:50,443 INFO L134 LiptonReduction]: Checked pairs total: 221 [2023-08-25 22:18:50,443 INFO L136 LiptonReduction]: Total number of compositions: 46 [2023-08-25 22:18:50,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 22:18:50,445 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;@698eb58, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 22:18:50,445 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-25 22:18:50,447 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 22:18:50,447 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-25 22:18:50,447 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:18:50,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:50,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 22:18:50,447 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 22:18:50,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:50,448 INFO L85 PathProgramCache]: Analyzing trace with hash 8650211, now seen corresponding path program 1 times [2023-08-25 22:18:50,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:50,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483252412] [2023-08-25 22:18:50,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:50,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:18:50,485 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 22:18:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:18:50,520 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 22:18:50,521 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 22:18:50,523 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-25 22:18:50,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 22:18:50,524 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 22:18:50,531 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-25 22:18:50,531 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 22:18:50,531 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 22:18:50,543 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 22:18:50,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 61 transitions, 134 flow [2023-08-25 22:18:50,561 INFO L124 PetriNetUnfolderBase]: 3/83 cut-off events. [2023-08-25 22:18:50,561 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 22:18:50,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 83 events. 3/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 115 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 58. Up to 6 conditions per place. [2023-08-25 22:18:50,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 61 transitions, 134 flow [2023-08-25 22:18:50,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 61 transitions, 134 flow [2023-08-25 22:18:50,562 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 22:18:50,562 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 61 transitions, 134 flow [2023-08-25 22:18:50,563 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 61 transitions, 134 flow [2023-08-25 22:18:50,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 61 transitions, 134 flow [2023-08-25 22:18:50,571 INFO L124 PetriNetUnfolderBase]: 3/83 cut-off events. [2023-08-25 22:18:50,571 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 22:18:50,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 83 events. 3/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 115 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 58. Up to 6 conditions per place. [2023-08-25 22:18:50,572 INFO L119 LiptonReduction]: Number of co-enabled transitions 1040 [2023-08-25 22:18:51,448 INFO L134 LiptonReduction]: Checked pairs total: 1552 [2023-08-25 22:18:51,449 INFO L136 LiptonReduction]: Total number of compositions: 51 [2023-08-25 22:18:51,450 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 22:18:51,451 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;@698eb58, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 22:18:51,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-25 22:18:51,451 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 22:18:51,452 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-25 22:18:51,452 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:18:51,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:51,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 22:18:51,452 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-25 22:18:51,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:51,452 INFO L85 PathProgramCache]: Analyzing trace with hash 410, now seen corresponding path program 1 times [2023-08-25 22:18:51,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:51,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111802511] [2023-08-25 22:18:51,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:51,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:51,460 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 22:18:51,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:51,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111802511] [2023-08-25 22:18:51,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111802511] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:51,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:51,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 22:18:51,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681534387] [2023-08-25 22:18:51,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:51,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 22:18:51,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:51,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 22:18:51,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 22:18:51,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 112 [2023-08-25 22:18:51,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 50 flow. Second operand has 2 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 22:18:51,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:51,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 112 [2023-08-25 22:18:51,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:51,510 INFO L124 PetriNetUnfolderBase]: 39/95 cut-off events. [2023-08-25 22:18:51,510 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-08-25 22:18:51,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 95 events. 39/95 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 358 event pairs, 39 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 54. Up to 82 conditions per place. [2023-08-25 22:18:51,511 INFO L140 encePairwiseOnDemand]: 106/112 looper letters, 10 selfloop transitions, 0 changer transitions 0/13 dead transitions. [2023-08-25 22:18:51,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 13 transitions, 58 flow [2023-08-25 22:18:51,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 22:18:51,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 22:18:51,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 110 transitions. [2023-08-25 22:18:51,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2023-08-25 22:18:51,514 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 110 transitions. [2023-08-25 22:18:51,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 110 transitions. [2023-08-25 22:18:51,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:51,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 110 transitions. [2023-08-25 22:18:51,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 22:18:51,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states 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 22:18:51,516 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states 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 22:18:51,516 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 50 flow. Second operand 2 states and 110 transitions. [2023-08-25 22:18:51,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 13 transitions, 58 flow [2023-08-25 22:18:51,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 13 transitions, 56 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-25 22:18:51,517 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 36 flow [2023-08-25 22:18:51,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2023-08-25 22:18:51,518 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -5 predicate places. [2023-08-25 22:18:51,518 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 36 flow [2023-08-25 22:18:51,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 22:18:51,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:51,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-25 22:18:51,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 22:18:51,518 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-25 22:18:51,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:51,519 INFO L85 PathProgramCache]: Analyzing trace with hash 390797762, now seen corresponding path program 1 times [2023-08-25 22:18:51,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:51,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891617470] [2023-08-25 22:18:51,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:51,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:51,572 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 22:18:51,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:51,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891617470] [2023-08-25 22:18:51,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891617470] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:51,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:51,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:18:51,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689195393] [2023-08-25 22:18:51,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:51,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:51,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:51,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:51,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:51,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 112 [2023-08-25 22:18:51,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 22:18:51,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:51,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 112 [2023-08-25 22:18:51,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:51,632 INFO L124 PetriNetUnfolderBase]: 42/97 cut-off events. [2023-08-25 22:18:51,632 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-25 22:18:51,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 97 events. 42/97 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 414 event pairs, 16 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 201. Up to 47 conditions per place. [2023-08-25 22:18:51,633 INFO L140 encePairwiseOnDemand]: 108/112 looper letters, 12 selfloop transitions, 3 changer transitions 1/19 dead transitions. [2023-08-25 22:18:51,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 85 flow [2023-08-25 22:18:51,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:51,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:51,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-08-25 22:18:51,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2023-08-25 22:18:51,637 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-08-25 22:18:51,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-08-25 22:18:51,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:51,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-08-25 22:18:51,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 22:18:51,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states 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 22:18:51,639 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states 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 22:18:51,639 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 36 flow. Second operand 3 states and 146 transitions. [2023-08-25 22:18:51,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 85 flow [2023-08-25 22:18:51,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 19 transitions, 85 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 22:18:51,640 INFO L231 Difference]: Finished difference. Result has 23 places, 15 transitions, 58 flow [2023-08-25 22:18:51,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=23, PETRI_TRANSITIONS=15} [2023-08-25 22:18:51,641 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2023-08-25 22:18:51,641 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 15 transitions, 58 flow [2023-08-25 22:18:51,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 22:18:51,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:51,641 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:51,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 22:18:51,641 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-25 22:18:51,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:51,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1639322979, now seen corresponding path program 1 times [2023-08-25 22:18:51,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:51,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023909721] [2023-08-25 22:18:51,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:51,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:51,703 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 22:18:51,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:51,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023909721] [2023-08-25 22:18:51,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023909721] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:51,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:51,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:18:51,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58318992] [2023-08-25 22:18:51,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:51,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:51,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:51,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:51,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:51,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 112 [2023-08-25 22:18:51,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 15 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 22:18:51,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:51,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 112 [2023-08-25 22:18:51,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:51,736 INFO L124 PetriNetUnfolderBase]: 33/92 cut-off events. [2023-08-25 22:18:51,743 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-25 22:18:51,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 92 events. 33/92 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 394 event pairs, 18 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 237. Up to 41 conditions per place. [2023-08-25 22:18:51,743 INFO L140 encePairwiseOnDemand]: 108/112 looper letters, 10 selfloop transitions, 3 changer transitions 3/19 dead transitions. [2023-08-25 22:18:51,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 104 flow [2023-08-25 22:18:51,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:51,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:51,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2023-08-25 22:18:51,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-08-25 22:18:51,746 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 144 transitions. [2023-08-25 22:18:51,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 144 transitions. [2023-08-25 22:18:51,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:51,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 144 transitions. [2023-08-25 22:18:51,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 22:18:51,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states 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 22:18:51,747 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states 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 22:18:51,747 INFO L175 Difference]: Start difference. First operand has 23 places, 15 transitions, 58 flow. Second operand 3 states and 144 transitions. [2023-08-25 22:18:51,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 104 flow [2023-08-25 22:18:51,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 96 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:18:51,748 INFO L231 Difference]: Finished difference. Result has 25 places, 15 transitions, 70 flow [2023-08-25 22:18:51,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=25, PETRI_TRANSITIONS=15} [2023-08-25 22:18:51,749 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2023-08-25 22:18:51,749 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 15 transitions, 70 flow [2023-08-25 22:18:51,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 22:18:51,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:51,750 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:51,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 22:18:51,750 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-25 22:18:51,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:51,750 INFO L85 PathProgramCache]: Analyzing trace with hash -719296476, now seen corresponding path program 1 times [2023-08-25 22:18:51,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:51,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530886866] [2023-08-25 22:18:51,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:51,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:51,813 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 22:18:51,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:51,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530886866] [2023-08-25 22:18:51,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530886866] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:51,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:51,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:18:51,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426523527] [2023-08-25 22:18:51,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:51,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:18:51,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:51,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:18:51,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:18:51,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 112 [2023-08-25 22:18:51,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 15 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 22:18:51,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:51,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 112 [2023-08-25 22:18:51,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:51,855 INFO L124 PetriNetUnfolderBase]: 20/63 cut-off events. [2023-08-25 22:18:51,855 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-08-25 22:18:51,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 63 events. 20/63 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 238 event pairs, 4 based on Foata normal form. 4/66 useless extension candidates. Maximal degree in co-relation 191. Up to 46 conditions per place. [2023-08-25 22:18:51,855 INFO L140 encePairwiseOnDemand]: 110/112 looper letters, 8 selfloop transitions, 1 changer transitions 5/17 dead transitions. [2023-08-25 22:18:51,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 17 transitions, 107 flow [2023-08-25 22:18:51,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:51,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:51,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2023-08-25 22:18:51,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255952380952381 [2023-08-25 22:18:51,859 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 143 transitions. [2023-08-25 22:18:51,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 143 transitions. [2023-08-25 22:18:51,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:51,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 143 transitions. [2023-08-25 22:18:51,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 22:18:51,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states 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 22:18:51,862 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states 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 22:18:51,862 INFO L175 Difference]: Start difference. First operand has 25 places, 15 transitions, 70 flow. Second operand 3 states and 143 transitions. [2023-08-25 22:18:51,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 17 transitions, 107 flow [2023-08-25 22:18:51,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 17 transitions, 101 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:18:51,865 INFO L231 Difference]: Finished difference. Result has 24 places, 11 transitions, 46 flow [2023-08-25 22:18:51,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=24, PETRI_TRANSITIONS=11} [2023-08-25 22:18:51,867 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 0 predicate places. [2023-08-25 22:18:51,867 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 11 transitions, 46 flow [2023-08-25 22:18:51,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 22:18:51,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:51,867 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:51,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 22:18:51,867 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-25 22:18:51,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:51,868 INFO L85 PathProgramCache]: Analyzing trace with hash -720592909, now seen corresponding path program 1 times [2023-08-25 22:18:51,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:51,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696801544] [2023-08-25 22:18:51,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:51,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:51,940 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 22:18:51,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:51,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696801544] [2023-08-25 22:18:51,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696801544] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:51,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:51,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:18:51,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511161851] [2023-08-25 22:18:51,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:51,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:18:51,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:51,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:18:51,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:18:51,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 112 [2023-08-25 22:18:51,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 11 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 22:18:51,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:51,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 112 [2023-08-25 22:18:51,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:51,960 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2023-08-25 22:18:51,961 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-25 22:18:51,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 20 events. 3/20 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 0 based on Foata normal form. 4/24 useless extension candidates. Maximal degree in co-relation 53. Up to 9 conditions per place. [2023-08-25 22:18:51,961 INFO L140 encePairwiseOnDemand]: 110/112 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2023-08-25 22:18:51,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 11 transitions, 60 flow [2023-08-25 22:18:51,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:51,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:51,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2023-08-25 22:18:51,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2023-08-25 22:18:51,962 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 138 transitions. [2023-08-25 22:18:51,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 138 transitions. [2023-08-25 22:18:51,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:51,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 138 transitions. [2023-08-25 22:18:51,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 22:18:51,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states 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 22:18:51,963 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states 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 22:18:51,963 INFO L175 Difference]: Start difference. First operand has 24 places, 11 transitions, 46 flow. Second operand 3 states and 138 transitions. [2023-08-25 22:18:51,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 11 transitions, 60 flow [2023-08-25 22:18:51,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 11 transitions, 49 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-25 22:18:51,964 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-25 22:18:51,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-25 22:18:51,965 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -5 predicate places. [2023-08-25 22:18:51,965 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-25 22:18:51,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 22:18:51,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 10 remaining) [2023-08-25 22:18:51,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2023-08-25 22:18:51,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (7 of 10 remaining) [2023-08-25 22:18:51,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (6 of 10 remaining) [2023-08-25 22:18:51,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (5 of 10 remaining) [2023-08-25 22:18:51,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2023-08-25 22:18:51,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2023-08-25 22:18:51,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2023-08-25 22:18:51,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2023-08-25 22:18:51,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2023-08-25 22:18:51,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 22:18:51,967 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-25 22:18:51,967 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-25 22:18:51,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 61 transitions, 134 flow [2023-08-25 22:18:51,973 INFO L124 PetriNetUnfolderBase]: 3/83 cut-off events. [2023-08-25 22:18:51,974 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 22:18:51,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 83 events. 3/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 115 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 58. Up to 6 conditions per place. [2023-08-25 22:18:51,974 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 61 transitions, 134 flow [2023-08-25 22:18:51,974 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 54 transitions, 120 flow [2023-08-25 22:18:51,974 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 22:18:51,975 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 54 transitions, 120 flow [2023-08-25 22:18:51,975 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 54 transitions, 120 flow [2023-08-25 22:18:51,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 54 transitions, 120 flow [2023-08-25 22:18:51,978 INFO L124 PetriNetUnfolderBase]: 0/64 cut-off events. [2023-08-25 22:18:51,979 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 22:18:51,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 0/64 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2023-08-25 22:18:51,979 INFO L119 LiptonReduction]: Number of co-enabled transitions 728 [2023-08-25 22:18:52,849 INFO L134 LiptonReduction]: Checked pairs total: 1286 [2023-08-25 22:18:52,850 INFO L136 LiptonReduction]: Total number of compositions: 46 [2023-08-25 22:18:52,851 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 22:18:52,851 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;@698eb58, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 22:18:52,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-25 22:18:52,853 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 22:18:52,853 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-08-25 22:18:52,853 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 22:18:52,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:52,853 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2023-08-25 22:18:52,853 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 22:18:52,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:52,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1276489661, now seen corresponding path program 1 times [2023-08-25 22:18:52,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:52,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221480778] [2023-08-25 22:18:52,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:52,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:18:52,867 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 22:18:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:18:52,892 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 22:18:52,892 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 22:18:52,892 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-25 22:18:52,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 22:18:52,893 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 22:18:52,893 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-25 22:18:52,893 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 22:18:52,893 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-25 22:18:52,905 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 22:18:52,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 75 transitions, 171 flow [2023-08-25 22:18:52,912 INFO L124 PetriNetUnfolderBase]: 4/109 cut-off events. [2023-08-25 22:18:52,912 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-25 22:18:52,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 109 events. 4/109 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 180 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 87. Up to 8 conditions per place. [2023-08-25 22:18:52,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 75 transitions, 171 flow [2023-08-25 22:18:52,913 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 75 transitions, 171 flow [2023-08-25 22:18:52,913 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 22:18:52,913 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 75 transitions, 171 flow [2023-08-25 22:18:52,914 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 75 transitions, 171 flow [2023-08-25 22:18:52,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 75 transitions, 171 flow [2023-08-25 22:18:52,919 INFO L124 PetriNetUnfolderBase]: 4/109 cut-off events. [2023-08-25 22:18:52,919 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-25 22:18:52,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 109 events. 4/109 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 180 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 87. Up to 8 conditions per place. [2023-08-25 22:18:52,920 INFO L119 LiptonReduction]: Number of co-enabled transitions 2106 [2023-08-25 22:18:53,948 INFO L134 LiptonReduction]: Checked pairs total: 4131 [2023-08-25 22:18:53,948 INFO L136 LiptonReduction]: Total number of compositions: 61 [2023-08-25 22:18:53,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 22:18:53,949 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;@698eb58, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 22:18:53,949 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-25 22:18:53,950 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 22:18:53,950 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-25 22:18:53,950 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:18:53,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:53,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 22:18:53,950 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-08-25 22:18:53,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:53,951 INFO L85 PathProgramCache]: Analyzing trace with hash 607, now seen corresponding path program 1 times [2023-08-25 22:18:53,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:53,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37617166] [2023-08-25 22:18:53,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:53,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:53,961 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 22:18:53,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:53,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37617166] [2023-08-25 22:18:53,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37617166] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:53,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:53,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 22:18:53,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644986943] [2023-08-25 22:18:53,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:53,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 22:18:53,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:53,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 22:18:53,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 22:18:53,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 136 [2023-08-25 22:18:53,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 71 flow. Second operand has 2 states, 2 states have (on average 55.5) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 22:18:53,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:53,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 136 [2023-08-25 22:18:53,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:54,023 INFO L124 PetriNetUnfolderBase]: 279/507 cut-off events. [2023-08-25 22:18:54,024 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2023-08-25 22:18:54,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1087 conditions, 507 events. 279/507 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2421 event pairs, 279 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 207. Up to 450 conditions per place. [2023-08-25 22:18:54,028 INFO L140 encePairwiseOnDemand]: 128/136 looper letters, 14 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-08-25 22:18:54,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 17 transitions, 83 flow [2023-08-25 22:18:54,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 22:18:54,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 22:18:54,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 132 transitions. [2023-08-25 22:18:54,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4852941176470588 [2023-08-25 22:18:54,029 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 132 transitions. [2023-08-25 22:18:54,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 132 transitions. [2023-08-25 22:18:54,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:54,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 132 transitions. [2023-08-25 22:18:54,029 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 22:18:54,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states 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 22:18:54,031 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states 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 22:18:54,031 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 71 flow. Second operand 2 states and 132 transitions. [2023-08-25 22:18:54,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 17 transitions, 83 flow [2023-08-25 22:18:54,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 77 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-25 22:18:54,033 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 49 flow [2023-08-25 22:18:54,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=49, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-08-25 22:18:54,035 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -7 predicate places. [2023-08-25 22:18:54,035 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 49 flow [2023-08-25 22:18:54,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 55.5) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 22:18:54,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:54,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-25 22:18:54,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 22:18:54,036 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-08-25 22:18:54,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:54,036 INFO L85 PathProgramCache]: Analyzing trace with hash 576788262, now seen corresponding path program 1 times [2023-08-25 22:18:54,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:54,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174810511] [2023-08-25 22:18:54,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:54,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:54,068 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 22:18:54,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:54,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174810511] [2023-08-25 22:18:54,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174810511] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:54,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:54,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:18:54,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565797407] [2023-08-25 22:18:54,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:54,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:54,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:54,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:54,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:54,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 136 [2023-08-25 22:18:54,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 22:18:54,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:54,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 136 [2023-08-25 22:18:54,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:54,119 INFO L124 PetriNetUnfolderBase]: 370/649 cut-off events. [2023-08-25 22:18:54,119 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-08-25 22:18:54,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1348 conditions, 649 events. 370/649 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3528 event pairs, 180 based on Foata normal form. 0/500 useless extension candidates. Maximal degree in co-relation 1342. Up to 363 conditions per place. [2023-08-25 22:18:54,121 INFO L140 encePairwiseOnDemand]: 131/136 looper letters, 20 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-08-25 22:18:54,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 27 transitions, 127 flow [2023-08-25 22:18:54,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:54,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:54,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2023-08-25 22:18:54,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4362745098039216 [2023-08-25 22:18:54,122 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 178 transitions. [2023-08-25 22:18:54,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 178 transitions. [2023-08-25 22:18:54,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:54,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 178 transitions. [2023-08-25 22:18:54,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 22:18:54,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 22:18:54,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 22:18:54,124 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 49 flow. Second operand 3 states and 178 transitions. [2023-08-25 22:18:54,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 27 transitions, 127 flow [2023-08-25 22:18:54,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 27 transitions, 127 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 22:18:54,125 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 79 flow [2023-08-25 22:18:54,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-08-25 22:18:54,125 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2023-08-25 22:18:54,126 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 79 flow [2023-08-25 22:18:54,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 22:18:54,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:54,126 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:54,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 22:18:54,126 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-08-25 22:18:54,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:54,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1536391266, now seen corresponding path program 1 times [2023-08-25 22:18:54,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:54,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249666757] [2023-08-25 22:18:54,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:54,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:54,141 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 22:18:54,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:54,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249666757] [2023-08-25 22:18:54,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249666757] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:54,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:54,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:18:54,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079706376] [2023-08-25 22:18:54,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:54,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:54,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:54,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:54,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:54,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 136 [2023-08-25 22:18:54,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 22:18:54,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:54,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 136 [2023-08-25 22:18:54,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:54,204 INFO L124 PetriNetUnfolderBase]: 432/765 cut-off events. [2023-08-25 22:18:54,205 INFO L125 PetriNetUnfolderBase]: For 445/445 co-relation queries the response was YES. [2023-08-25 22:18:54,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1997 conditions, 765 events. 432/765 cut-off events. For 445/445 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 4414 event pairs, 182 based on Foata normal form. 0/645 useless extension candidates. Maximal degree in co-relation 1989. Up to 429 conditions per place. [2023-08-25 22:18:54,208 INFO L140 encePairwiseOnDemand]: 131/136 looper letters, 22 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-08-25 22:18:54,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 180 flow [2023-08-25 22:18:54,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:54,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:54,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2023-08-25 22:18:54,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4338235294117647 [2023-08-25 22:18:54,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 177 transitions. [2023-08-25 22:18:54,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 177 transitions. [2023-08-25 22:18:54,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:54,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 177 transitions. [2023-08-25 22:18:54,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 22:18:54,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 22:18:54,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 22:18:54,211 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 79 flow. Second operand 3 states and 177 transitions. [2023-08-25 22:18:54,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 180 flow [2023-08-25 22:18:54,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:18:54,213 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 119 flow [2023-08-25 22:18:54,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-08-25 22:18:54,214 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2023-08-25 22:18:54,214 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 119 flow [2023-08-25 22:18:54,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 22:18:54,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:54,214 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:54,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-25 22:18:54,214 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-08-25 22:18:54,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:54,215 INFO L85 PathProgramCache]: Analyzing trace with hash -381869303, now seen corresponding path program 1 times [2023-08-25 22:18:54,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:54,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902854812] [2023-08-25 22:18:54,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:54,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:54,328 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 22:18:54,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:54,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902854812] [2023-08-25 22:18:54,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902854812] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:54,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:54,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:18:54,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30696915] [2023-08-25 22:18:54,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:54,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:18:54,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:54,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:18:54,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:18:54,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 136 [2023-08-25 22:18:54,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 22:18:54,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:54,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 136 [2023-08-25 22:18:54,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:54,390 INFO L124 PetriNetUnfolderBase]: 352/619 cut-off events. [2023-08-25 22:18:54,391 INFO L125 PetriNetUnfolderBase]: For 556/556 co-relation queries the response was YES. [2023-08-25 22:18:54,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1888 conditions, 619 events. 352/619 cut-off events. For 556/556 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 3539 event pairs, 64 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 1879. Up to 512 conditions per place. [2023-08-25 22:18:54,394 INFO L140 encePairwiseOnDemand]: 134/136 looper letters, 28 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-08-25 22:18:54,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 225 flow [2023-08-25 22:18:54,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:54,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:54,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2023-08-25 22:18:54,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43137254901960786 [2023-08-25 22:18:54,395 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 176 transitions. [2023-08-25 22:18:54,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 176 transitions. [2023-08-25 22:18:54,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:54,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 176 transitions. [2023-08-25 22:18:54,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 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 22:18:54,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 22:18:54,396 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 22:18:54,396 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 119 flow. Second operand 3 states and 176 transitions. [2023-08-25 22:18:54,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 225 flow [2023-08-25 22:18:54,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 207 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:18:54,399 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 107 flow [2023-08-25 22:18:54,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-08-25 22:18:54,400 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -2 predicate places. [2023-08-25 22:18:54,400 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 107 flow [2023-08-25 22:18:54,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 22:18:54,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:54,400 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:54,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-25 22:18:54,400 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-08-25 22:18:54,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:54,401 INFO L85 PathProgramCache]: Analyzing trace with hash -383486560, now seen corresponding path program 1 times [2023-08-25 22:18:54,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:54,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612963220] [2023-08-25 22:18:54,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:54,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:54,438 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 22:18:54,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:54,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612963220] [2023-08-25 22:18:54,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612963220] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:54,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:54,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:18:54,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205877897] [2023-08-25 22:18:54,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:54,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:18:54,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:54,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:18:54,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:18:54,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 136 [2023-08-25 22:18:54,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 22:18:54,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:54,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 136 [2023-08-25 22:18:54,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:54,509 INFO L124 PetriNetUnfolderBase]: 285/518 cut-off events. [2023-08-25 22:18:54,509 INFO L125 PetriNetUnfolderBase]: For 392/392 co-relation queries the response was YES. [2023-08-25 22:18:54,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1528 conditions, 518 events. 285/518 cut-off events. For 392/392 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 2828 event pairs, 51 based on Foata normal form. 0/464 useless extension candidates. Maximal degree in co-relation 1519. Up to 412 conditions per place. [2023-08-25 22:18:54,511 INFO L140 encePairwiseOnDemand]: 134/136 looper letters, 23 selfloop transitions, 2 changer transitions 2/30 dead transitions. [2023-08-25 22:18:54,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 30 transitions, 192 flow [2023-08-25 22:18:54,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:54,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:54,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2023-08-25 22:18:54,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42401960784313725 [2023-08-25 22:18:54,512 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 173 transitions. [2023-08-25 22:18:54,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 173 transitions. [2023-08-25 22:18:54,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:54,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 173 transitions. [2023-08-25 22:18:54,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states 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 22:18:54,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 22:18:54,514 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 22:18:54,514 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 107 flow. Second operand 3 states and 173 transitions. [2023-08-25 22:18:54,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 30 transitions, 192 flow [2023-08-25 22:18:54,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 189 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:18:54,515 INFO L231 Difference]: Finished difference. Result has 30 places, 21 transitions, 103 flow [2023-08-25 22:18:54,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=30, PETRI_TRANSITIONS=21} [2023-08-25 22:18:54,515 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -2 predicate places. [2023-08-25 22:18:54,515 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 103 flow [2023-08-25 22:18:54,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 22:18:54,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:54,516 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:54,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-25 22:18:54,516 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-08-25 22:18:54,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:54,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1581406438, now seen corresponding path program 1 times [2023-08-25 22:18:54,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:54,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222627719] [2023-08-25 22:18:54,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:54,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:54,535 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 22:18:54,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:54,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222627719] [2023-08-25 22:18:54,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222627719] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:54,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:54,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:18:54,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175695144] [2023-08-25 22:18:54,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:54,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:54,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:54,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:54,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:54,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 136 [2023-08-25 22:18:54,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 22:18:54,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:54,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 136 [2023-08-25 22:18:54,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:54,578 INFO L124 PetriNetUnfolderBase]: 173/393 cut-off events. [2023-08-25 22:18:54,578 INFO L125 PetriNetUnfolderBase]: For 336/336 co-relation queries the response was YES. [2023-08-25 22:18:54,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1166 conditions, 393 events. 173/393 cut-off events. For 336/336 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2254 event pairs, 107 based on Foata normal form. 32/420 useless extension candidates. Maximal degree in co-relation 1157. Up to 274 conditions per place. [2023-08-25 22:18:54,579 INFO L140 encePairwiseOnDemand]: 132/136 looper letters, 17 selfloop transitions, 7 changer transitions 1/28 dead transitions. [2023-08-25 22:18:54,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 193 flow [2023-08-25 22:18:54,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:54,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:54,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2023-08-25 22:18:54,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-08-25 22:18:54,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 170 transitions. [2023-08-25 22:18:54,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 170 transitions. [2023-08-25 22:18:54,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:54,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 170 transitions. [2023-08-25 22:18:54,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 22:18:54,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 22:18:54,582 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 22:18:54,582 INFO L175 Difference]: Start difference. First operand has 30 places, 21 transitions, 103 flow. Second operand 3 states and 170 transitions. [2023-08-25 22:18:54,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 193 flow [2023-08-25 22:18:54,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 189 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:18:54,583 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 154 flow [2023-08-25 22:18:54,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-08-25 22:18:54,584 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2023-08-25 22:18:54,584 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 154 flow [2023-08-25 22:18:54,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 22:18:54,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:54,585 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:54,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-25 22:18:54,585 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err2ASSERT_VIOLATIONASSERT, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-08-25 22:18:54,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:54,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1778962532, now seen corresponding path program 1 times [2023-08-25 22:18:54,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:54,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156527244] [2023-08-25 22:18:54,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:54,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:54,637 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 22:18:54,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:54,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156527244] [2023-08-25 22:18:54,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156527244] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:54,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:54,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:18:54,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302372562] [2023-08-25 22:18:54,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:54,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:18:54,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:54,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:18:54,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:18:54,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 136 [2023-08-25 22:18:54,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states 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 22:18:54,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:54,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 136 [2023-08-25 22:18:54,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:54,682 INFO L124 PetriNetUnfolderBase]: 120/310 cut-off events. [2023-08-25 22:18:54,682 INFO L125 PetriNetUnfolderBase]: For 471/471 co-relation queries the response was YES. [2023-08-25 22:18:54,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 310 events. 120/310 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1779 event pairs, 57 based on Foata normal form. 30/336 useless extension candidates. Maximal degree in co-relation 1023. Up to 134 conditions per place. [2023-08-25 22:18:54,683 INFO L140 encePairwiseOnDemand]: 134/136 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-08-25 22:18:54,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 240 flow [2023-08-25 22:18:54,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:54,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:54,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2023-08-25 22:18:54,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41421568627450983 [2023-08-25 22:18:54,684 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 169 transitions. [2023-08-25 22:18:54,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 169 transitions. [2023-08-25 22:18:54,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:54,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 169 transitions. [2023-08-25 22:18:54,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 22:18:54,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 22:18:54,685 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 22:18:54,685 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 154 flow. Second operand 3 states and 169 transitions. [2023-08-25 22:18:54,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 240 flow [2023-08-25 22:18:54,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 233 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:18:54,686 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2023-08-25 22:18:54,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2023-08-25 22:18:54,688 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2023-08-25 22:18:54,688 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2023-08-25 22:18:54,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states 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 22:18:54,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (12 of 13 remaining) [2023-08-25 22:18:54,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (11 of 13 remaining) [2023-08-25 22:18:54,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2023-08-25 22:18:54,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2023-08-25 22:18:54,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2023-08-25 22:18:54,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-08-25 22:18:54,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (6 of 13 remaining) [2023-08-25 22:18:54,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-08-25 22:18:54,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-08-25 22:18:54,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (3 of 13 remaining) [2023-08-25 22:18:54,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-08-25 22:18:54,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-08-25 22:18:54,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-08-25 22:18:54,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-25 22:18:54,689 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:54,690 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-25 22:18:54,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 75 transitions, 171 flow [2023-08-25 22:18:54,700 INFO L124 PetriNetUnfolderBase]: 4/109 cut-off events. [2023-08-25 22:18:54,700 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-25 22:18:54,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 109 events. 4/109 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 180 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 87. Up to 8 conditions per place. [2023-08-25 22:18:54,700 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 75 transitions, 171 flow [2023-08-25 22:18:54,701 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 68 transitions, 157 flow [2023-08-25 22:18:54,701 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 22:18:54,701 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 68 transitions, 157 flow [2023-08-25 22:18:54,701 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 68 transitions, 157 flow [2023-08-25 22:18:54,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 68 transitions, 157 flow [2023-08-25 22:18:54,705 INFO L124 PetriNetUnfolderBase]: 0/84 cut-off events. [2023-08-25 22:18:54,705 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-25 22:18:54,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 84 events. 0/84 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 97 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2023-08-25 22:18:54,706 INFO L119 LiptonReduction]: Number of co-enabled transitions 1638 [2023-08-25 22:18:55,802 INFO L134 LiptonReduction]: Checked pairs total: 3473 [2023-08-25 22:18:55,802 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-08-25 22:18:55,803 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 22:18:55,803 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;@698eb58, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 22:18:55,803 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-25 22:18:55,805 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 22:18:55,805 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2023-08-25 22:18:55,805 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-25 22:18:55,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:55,805 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-08-25 22:18:55,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 22:18:55,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:55,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1775107647, now seen corresponding path program 1 times [2023-08-25 22:18:55,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:55,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320619075] [2023-08-25 22:18:55,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:55,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:18:55,830 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 22:18:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:18:55,836 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 22:18:55,838 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 22:18:55,838 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-25 22:18:55,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-25 22:18:55,838 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 22:18:55,839 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-25 22:18:55,839 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 22:18:55,839 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-25 22:18:55,854 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 22:18:55,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 89 transitions, 210 flow [2023-08-25 22:18:55,861 INFO L124 PetriNetUnfolderBase]: 5/135 cut-off events. [2023-08-25 22:18:55,861 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-25 22:18:55,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 135 events. 5/135 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 237 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 117. Up to 10 conditions per place. [2023-08-25 22:18:55,861 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 89 transitions, 210 flow [2023-08-25 22:18:55,862 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 89 transitions, 210 flow [2023-08-25 22:18:55,862 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 22:18:55,862 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 89 transitions, 210 flow [2023-08-25 22:18:55,862 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 89 transitions, 210 flow [2023-08-25 22:18:55,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 89 transitions, 210 flow [2023-08-25 22:18:55,867 INFO L124 PetriNetUnfolderBase]: 5/135 cut-off events. [2023-08-25 22:18:55,868 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-25 22:18:55,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 135 events. 5/135 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 237 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 117. Up to 10 conditions per place. [2023-08-25 22:18:55,869 INFO L119 LiptonReduction]: Number of co-enabled transitions 3536 [2023-08-25 22:18:57,044 INFO L134 LiptonReduction]: Checked pairs total: 6549 [2023-08-25 22:18:57,044 INFO L136 LiptonReduction]: Total number of compositions: 71 [2023-08-25 22:18:57,045 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 22:18:57,046 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;@698eb58, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 22:18:57,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-25 22:18:57,046 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 22:18:57,046 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 22:18:57,047 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:18:57,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:57,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 22:18:57,047 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-25 22:18:57,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:57,047 INFO L85 PathProgramCache]: Analyzing trace with hash 836, now seen corresponding path program 1 times [2023-08-25 22:18:57,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:57,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473699832] [2023-08-25 22:18:57,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:57,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:57,051 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 22:18:57,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:57,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473699832] [2023-08-25 22:18:57,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473699832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:57,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:57,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 22:18:57,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241213155] [2023-08-25 22:18:57,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:57,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 22:18:57,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:57,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 22:18:57,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 22:18:57,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 160 [2023-08-25 22:18:57,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 22:18:57,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:57,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 160 [2023-08-25 22:18:57,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:57,167 INFO L124 PetriNetUnfolderBase]: 1623/2539 cut-off events. [2023-08-25 22:18:57,167 INFO L125 PetriNetUnfolderBase]: For 1054/1054 co-relation queries the response was YES. [2023-08-25 22:18:57,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5504 conditions, 2539 events. 1623/2539 cut-off events. For 1054/1054 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 13760 event pairs, 1623 based on Foata normal form. 0/1828 useless extension candidates. Maximal degree in co-relation 1119. Up to 2306 conditions per place. [2023-08-25 22:18:57,178 INFO L140 encePairwiseOnDemand]: 150/160 looper letters, 18 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-08-25 22:18:57,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 21 transitions, 110 flow [2023-08-25 22:18:57,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 22:18:57,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 22:18:57,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 154 transitions. [2023-08-25 22:18:57,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48125 [2023-08-25 22:18:57,179 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 154 transitions. [2023-08-25 22:18:57,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 154 transitions. [2023-08-25 22:18:57,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:57,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 154 transitions. [2023-08-25 22:18:57,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 77.0) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 22:18:57,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states 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 22:18:57,181 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states 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 22:18:57,181 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 94 flow. Second operand 2 states and 154 transitions. [2023-08-25 22:18:57,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 21 transitions, 110 flow [2023-08-25 22:18:57,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 21 transitions, 98 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-25 22:18:57,183 INFO L231 Difference]: Finished difference. Result has 31 places, 21 transitions, 62 flow [2023-08-25 22:18:57,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=21} [2023-08-25 22:18:57,183 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -9 predicate places. [2023-08-25 22:18:57,183 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 62 flow [2023-08-25 22:18:57,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 22:18:57,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:57,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-25 22:18:57,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-25 22:18:57,183 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-25 22:18:57,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:57,184 INFO L85 PathProgramCache]: Analyzing trace with hash 796952806, now seen corresponding path program 1 times [2023-08-25 22:18:57,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:57,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349121308] [2023-08-25 22:18:57,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:57,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:57,197 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 22:18:57,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:57,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349121308] [2023-08-25 22:18:57,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349121308] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:57,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:57,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:18:57,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294695005] [2023-08-25 22:18:57,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:57,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:57,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:57,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:57,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:57,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 160 [2023-08-25 22:18:57,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states 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 22:18:57,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:57,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 160 [2023-08-25 22:18:57,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:57,374 INFO L124 PetriNetUnfolderBase]: 2300/3511 cut-off events. [2023-08-25 22:18:57,374 INFO L125 PetriNetUnfolderBase]: For 321/321 co-relation queries the response was YES. [2023-08-25 22:18:57,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7230 conditions, 3511 events. 2300/3511 cut-off events. For 321/321 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 20726 event pairs, 1224 based on Foata normal form. 0/2644 useless extension candidates. Maximal degree in co-relation 7223. Up to 2129 conditions per place. [2023-08-25 22:18:57,388 INFO L140 encePairwiseOnDemand]: 154/160 looper letters, 27 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2023-08-25 22:18:57,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 35 transitions, 169 flow [2023-08-25 22:18:57,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:57,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:57,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2023-08-25 22:18:57,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2023-08-25 22:18:57,389 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 210 transitions. [2023-08-25 22:18:57,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 210 transitions. [2023-08-25 22:18:57,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:57,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 210 transitions. [2023-08-25 22:18:57,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states 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 22:18:57,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 22:18:57,391 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 22:18:57,391 INFO L175 Difference]: Start difference. First operand has 31 places, 21 transitions, 62 flow. Second operand 3 states and 210 transitions. [2023-08-25 22:18:57,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 35 transitions, 169 flow [2023-08-25 22:18:57,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 169 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 22:18:57,392 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 100 flow [2023-08-25 22:18:57,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2023-08-25 22:18:57,393 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2023-08-25 22:18:57,393 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 100 flow [2023-08-25 22:18:57,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states 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 22:18:57,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:57,393 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:57,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-25 22:18:57,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-25 22:18:57,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:57,394 INFO L85 PathProgramCache]: Analyzing trace with hash 799785650, now seen corresponding path program 1 times [2023-08-25 22:18:57,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:57,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621447908] [2023-08-25 22:18:57,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:57,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:57,406 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 22:18:57,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:57,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621447908] [2023-08-25 22:18:57,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621447908] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:57,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:57,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:18:57,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645769541] [2023-08-25 22:18:57,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:57,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:57,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:57,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:57,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:57,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 160 [2023-08-25 22:18:57,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 22:18:57,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:57,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 160 [2023-08-25 22:18:57,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:57,676 INFO L124 PetriNetUnfolderBase]: 3060/4717 cut-off events. [2023-08-25 22:18:57,676 INFO L125 PetriNetUnfolderBase]: For 2755/2755 co-relation queries the response was YES. [2023-08-25 22:18:57,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12125 conditions, 4717 events. 3060/4717 cut-off events. For 2755/2755 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 29997 event pairs, 1352 based on Foata normal form. 0/3849 useless extension candidates. Maximal degree in co-relation 12116. Up to 2885 conditions per place. [2023-08-25 22:18:57,702 INFO L140 encePairwiseOnDemand]: 154/160 looper letters, 30 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2023-08-25 22:18:57,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 242 flow [2023-08-25 22:18:57,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:57,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:57,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 209 transitions. [2023-08-25 22:18:57,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4354166666666667 [2023-08-25 22:18:57,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 209 transitions. [2023-08-25 22:18:57,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 209 transitions. [2023-08-25 22:18:57,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:57,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 209 transitions. [2023-08-25 22:18:57,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states 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 22:18:57,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 22:18:57,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 22:18:57,705 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 100 flow. Second operand 3 states and 209 transitions. [2023-08-25 22:18:57,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 242 flow [2023-08-25 22:18:57,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:18:57,713 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 158 flow [2023-08-25 22:18:57,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2023-08-25 22:18:57,713 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2023-08-25 22:18:57,713 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 158 flow [2023-08-25 22:18:57,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 22:18:57,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:57,714 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:57,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-25 22:18:57,714 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-25 22:18:57,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:57,714 INFO L85 PathProgramCache]: Analyzing trace with hash -974721646, now seen corresponding path program 1 times [2023-08-25 22:18:57,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:57,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792329936] [2023-08-25 22:18:57,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:57,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:57,734 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 22:18:57,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:57,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792329936] [2023-08-25 22:18:57,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792329936] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:57,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:57,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:18:57,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106928819] [2023-08-25 22:18:57,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:57,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:18:57,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:57,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:18:57,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:18:57,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 160 [2023-08-25 22:18:57,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 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 22:18:57,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:57,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 160 [2023-08-25 22:18:57,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:57,968 INFO L124 PetriNetUnfolderBase]: 2474/3707 cut-off events. [2023-08-25 22:18:57,969 INFO L125 PetriNetUnfolderBase]: For 3413/3413 co-relation queries the response was YES. [2023-08-25 22:18:57,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11160 conditions, 3707 events. 2474/3707 cut-off events. For 3413/3413 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 22833 event pairs, 472 based on Foata normal form. 0/3175 useless extension candidates. Maximal degree in co-relation 11150. Up to 3026 conditions per place. [2023-08-25 22:18:57,983 INFO L140 encePairwiseOnDemand]: 158/160 looper letters, 41 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-08-25 22:18:57,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 321 flow [2023-08-25 22:18:57,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:57,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:57,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2023-08-25 22:18:57,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2023-08-25 22:18:57,984 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2023-08-25 22:18:57,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2023-08-25 22:18:57,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:57,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2023-08-25 22:18:57,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states 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 22:18:57,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 22:18:57,985 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 22:18:57,985 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 158 flow. Second operand 3 states and 208 transitions. [2023-08-25 22:18:57,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 321 flow [2023-08-25 22:18:57,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 46 transitions, 297 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:18:57,994 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 142 flow [2023-08-25 22:18:57,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-08-25 22:18:57,994 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2023-08-25 22:18:57,994 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 142 flow [2023-08-25 22:18:57,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 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 22:18:57,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:57,995 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:57,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-25 22:18:57,995 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-25 22:18:57,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:57,995 INFO L85 PathProgramCache]: Analyzing trace with hash -976445853, now seen corresponding path program 1 times [2023-08-25 22:18:57,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:57,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339101008] [2023-08-25 22:18:57,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:57,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:58,027 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 22:18:58,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:58,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339101008] [2023-08-25 22:18:58,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339101008] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:58,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:58,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:18:58,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348068199] [2023-08-25 22:18:58,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:58,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:18:58,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:58,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:18:58,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:18:58,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 160 [2023-08-25 22:18:58,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 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 22:18:58,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:58,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 160 [2023-08-25 22:18:58,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:58,198 INFO L124 PetriNetUnfolderBase]: 1993/3029 cut-off events. [2023-08-25 22:18:58,198 INFO L125 PetriNetUnfolderBase]: For 2304/2304 co-relation queries the response was YES. [2023-08-25 22:18:58,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8827 conditions, 3029 events. 1993/3029 cut-off events. For 2304/2304 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 18181 event pairs, 335 based on Foata normal form. 0/2587 useless extension candidates. Maximal degree in co-relation 8817. Up to 2450 conditions per place. [2023-08-25 22:18:58,211 INFO L140 encePairwiseOnDemand]: 158/160 looper letters, 38 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-08-25 22:18:58,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 43 transitions, 282 flow [2023-08-25 22:18:58,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:58,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:58,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 205 transitions. [2023-08-25 22:18:58,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2023-08-25 22:18:58,213 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 205 transitions. [2023-08-25 22:18:58,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 205 transitions. [2023-08-25 22:18:58,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:58,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 205 transitions. [2023-08-25 22:18:58,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 22:18:58,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 22:18:58,215 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 22:18:58,215 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 142 flow. Second operand 3 states and 205 transitions. [2023-08-25 22:18:58,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 43 transitions, 282 flow [2023-08-25 22:18:58,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 43 transitions, 279 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:18:58,216 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 140 flow [2023-08-25 22:18:58,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2023-08-25 22:18:58,216 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2023-08-25 22:18:58,217 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 140 flow [2023-08-25 22:18:58,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 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 22:18:58,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:58,217 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:58,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-25 22:18:58,217 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-25 22:18:58,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:58,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1171846477, now seen corresponding path program 1 times [2023-08-25 22:18:58,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:58,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755871664] [2023-08-25 22:18:58,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:58,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:58,232 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 22:18:58,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:58,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755871664] [2023-08-25 22:18:58,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755871664] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:58,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:58,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:18:58,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056276911] [2023-08-25 22:18:58,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:58,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:58,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:58,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:58,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:58,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 160 [2023-08-25 22:18:58,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 22:18:58,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:58,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 160 [2023-08-25 22:18:58,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:58,464 INFO L124 PetriNetUnfolderBase]: 2430/3913 cut-off events. [2023-08-25 22:18:58,465 INFO L125 PetriNetUnfolderBase]: For 3547/3547 co-relation queries the response was YES. [2023-08-25 22:18:58,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11284 conditions, 3913 events. 2430/3913 cut-off events. For 3547/3547 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 25879 event pairs, 988 based on Foata normal form. 0/3424 useless extension candidates. Maximal degree in co-relation 11274. Up to 2459 conditions per place. [2023-08-25 22:18:58,480 INFO L140 encePairwiseOnDemand]: 154/160 looper letters, 30 selfloop transitions, 13 changer transitions 0/46 dead transitions. [2023-08-25 22:18:58,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 311 flow [2023-08-25 22:18:58,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:58,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:58,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 204 transitions. [2023-08-25 22:18:58,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2023-08-25 22:18:58,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 204 transitions. [2023-08-25 22:18:58,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 204 transitions. [2023-08-25 22:18:58,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:58,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 204 transitions. [2023-08-25 22:18:58,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states 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 22:18:58,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 22:18:58,483 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 22:18:58,483 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 140 flow. Second operand 3 states and 204 transitions. [2023-08-25 22:18:58,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 311 flow [2023-08-25 22:18:58,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:18:58,484 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 264 flow [2023-08-25 22:18:58,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2023-08-25 22:18:58,484 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2023-08-25 22:18:58,485 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 264 flow [2023-08-25 22:18:58,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 22:18:58,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:58,485 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:58,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-25 22:18:58,485 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-25 22:18:58,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:58,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1967506548, now seen corresponding path program 1 times [2023-08-25 22:18:58,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:58,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852181210] [2023-08-25 22:18:58,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:58,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:58,507 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 22:18:58,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:58,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852181210] [2023-08-25 22:18:58,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852181210] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:58,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:58,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:18:58,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909812831] [2023-08-25 22:18:58,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:58,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:18:58,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:58,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:18:58,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:18:58,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 160 [2023-08-25 22:18:58,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 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 22:18:58,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:58,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 160 [2023-08-25 22:18:58,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:58,716 INFO L124 PetriNetUnfolderBase]: 1955/3099 cut-off events. [2023-08-25 22:18:58,716 INFO L125 PetriNetUnfolderBase]: For 5131/5131 co-relation queries the response was YES. [2023-08-25 22:18:58,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11104 conditions, 3099 events. 1955/3099 cut-off events. For 5131/5131 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 19709 event pairs, 409 based on Foata normal form. 204/3066 useless extension candidates. Maximal degree in co-relation 11093. Up to 2442 conditions per place. [2023-08-25 22:18:58,727 INFO L140 encePairwiseOnDemand]: 158/160 looper letters, 43 selfloop transitions, 4 changer transitions 2/52 dead transitions. [2023-08-25 22:18:58,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 52 transitions, 447 flow [2023-08-25 22:18:58,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:58,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:58,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2023-08-25 22:18:58,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2023-08-25 22:18:58,728 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 202 transitions. [2023-08-25 22:18:58,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 202 transitions. [2023-08-25 22:18:58,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:58,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 202 transitions. [2023-08-25 22:18:58,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states 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 22:18:58,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 22:18:58,729 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 22:18:58,729 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 264 flow. Second operand 3 states and 202 transitions. [2023-08-25 22:18:58,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 52 transitions, 447 flow [2023-08-25 22:18:58,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 52 transitions, 421 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:18:58,733 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 240 flow [2023-08-25 22:18:58,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2023-08-25 22:18:58,733 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2023-08-25 22:18:58,733 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 240 flow [2023-08-25 22:18:58,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 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 22:18:58,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:58,737 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:58,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-25 22:18:58,737 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-25 22:18:58,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:58,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1106745286, now seen corresponding path program 1 times [2023-08-25 22:18:58,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:58,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471129750] [2023-08-25 22:18:58,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:58,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:58,753 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-25 22:18:58,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:58,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471129750] [2023-08-25 22:18:58,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471129750] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:58,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:58,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:18:58,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589726028] [2023-08-25 22:18:58,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:58,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:18:58,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:58,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:18:58,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:18:58,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 160 [2023-08-25 22:18:58,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 22:18:58,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:58,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 160 [2023-08-25 22:18:58,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:58,894 INFO L124 PetriNetUnfolderBase]: 1371/2521 cut-off events. [2023-08-25 22:18:58,894 INFO L125 PetriNetUnfolderBase]: For 3937/3937 co-relation queries the response was YES. [2023-08-25 22:18:58,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8468 conditions, 2521 events. 1371/2521 cut-off events. For 3937/3937 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 17570 event pairs, 711 based on Foata normal form. 128/2636 useless extension candidates. Maximal degree in co-relation 8457. Up to 1892 conditions per place. [2023-08-25 22:18:58,903 INFO L140 encePairwiseOnDemand]: 155/160 looper letters, 29 selfloop transitions, 19 changer transitions 1/52 dead transitions. [2023-08-25 22:18:58,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 52 transitions, 464 flow [2023-08-25 22:18:58,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:58,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:58,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2023-08-25 22:18:58,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41458333333333336 [2023-08-25 22:18:58,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 199 transitions. [2023-08-25 22:18:58,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 199 transitions. [2023-08-25 22:18:58,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:58,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 199 transitions. [2023-08-25 22:18:58,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states 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 22:18:58,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 22:18:58,906 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 22:18:58,906 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 240 flow. Second operand 3 states and 199 transitions. [2023-08-25 22:18:58,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 52 transitions, 464 flow [2023-08-25 22:18:58,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 52 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:18:58,908 INFO L231 Difference]: Finished difference. Result has 39 places, 47 transitions, 419 flow [2023-08-25 22:18:58,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=419, PETRI_PLACES=39, PETRI_TRANSITIONS=47} [2023-08-25 22:18:58,909 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2023-08-25 22:18:58,909 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 47 transitions, 419 flow [2023-08-25 22:18:58,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 22:18:58,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:18:58,909 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:58,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-25 22:18:58,909 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-25 22:18:58,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:18:58,909 INFO L85 PathProgramCache]: Analyzing trace with hash -50630639, now seen corresponding path program 1 times [2023-08-25 22:18:58,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:18:58,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107867799] [2023-08-25 22:18:58,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:18:58,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:18:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:18:58,948 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-25 22:18:58,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:18:58,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107867799] [2023-08-25 22:18:58,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107867799] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:18:58,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:18:58,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:18:58,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165168266] [2023-08-25 22:18:58,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:18:58,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:18:58,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:18:58,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:18:58,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:18:58,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 160 [2023-08-25 22:18:58,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 47 transitions, 419 flow. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states 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 22:18:58,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:18:58,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 160 [2023-08-25 22:18:58,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:18:59,100 INFO L124 PetriNetUnfolderBase]: 1002/1982 cut-off events. [2023-08-25 22:18:59,100 INFO L125 PetriNetUnfolderBase]: For 5087/5087 co-relation queries the response was YES. [2023-08-25 22:18:59,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7473 conditions, 1982 events. 1002/1982 cut-off events. For 5087/5087 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 14142 event pairs, 397 based on Foata normal form. 170/2139 useless extension candidates. Maximal degree in co-relation 7461. Up to 904 conditions per place. [2023-08-25 22:18:59,104 INFO L140 encePairwiseOnDemand]: 158/160 looper letters, 0 selfloop transitions, 0 changer transitions 62/62 dead transitions. [2023-08-25 22:18:59,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 62 transitions, 658 flow [2023-08-25 22:18:59,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:18:59,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:18:59,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2023-08-25 22:18:59,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2023-08-25 22:18:59,105 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 198 transitions. [2023-08-25 22:18:59,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 198 transitions. [2023-08-25 22:18:59,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:18:59,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 198 transitions. [2023-08-25 22:18:59,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 22:18:59,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 22:18:59,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 22:18:59,106 INFO L175 Difference]: Start difference. First operand has 39 places, 47 transitions, 419 flow. Second operand 3 states and 198 transitions. [2023-08-25 22:18:59,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 62 transitions, 658 flow [2023-08-25 22:18:59,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 62 transitions, 639 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:18:59,109 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2023-08-25 22:18:59,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2023-08-25 22:18:59,110 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2023-08-25 22:18:59,110 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2023-08-25 22:18:59,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states 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 22:18:59,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 16 remaining) [2023-08-25 22:18:59,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2023-08-25 22:18:59,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (13 of 16 remaining) [2023-08-25 22:18:59,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2023-08-25 22:18:59,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2023-08-25 22:18:59,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (10 of 16 remaining) [2023-08-25 22:18:59,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (9 of 16 remaining) [2023-08-25 22:18:59,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2023-08-25 22:18:59,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (7 of 16 remaining) [2023-08-25 22:18:59,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2023-08-25 22:18:59,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2023-08-25 22:18:59,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (4 of 16 remaining) [2023-08-25 22:18:59,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2023-08-25 22:18:59,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2023-08-25 22:18:59,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2023-08-25 22:18:59,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2023-08-25 22:18:59,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-25 22:18:59,111 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:18:59,112 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 (1/2) [2023-08-25 22:18:59,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 89 transitions, 210 flow [2023-08-25 22:18:59,118 INFO L124 PetriNetUnfolderBase]: 5/135 cut-off events. [2023-08-25 22:18:59,118 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-25 22:18:59,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 135 events. 5/135 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 237 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 117. Up to 10 conditions per place. [2023-08-25 22:18:59,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 89 transitions, 210 flow [2023-08-25 22:18:59,120 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 82 transitions, 196 flow [2023-08-25 22:18:59,120 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 22:18:59,120 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 82 transitions, 196 flow [2023-08-25 22:18:59,120 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 82 transitions, 196 flow [2023-08-25 22:18:59,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 82 transitions, 196 flow [2023-08-25 22:18:59,125 INFO L124 PetriNetUnfolderBase]: 0/104 cut-off events. [2023-08-25 22:18:59,125 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-25 22:18:59,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 104 events. 0/104 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 135 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2023-08-25 22:18:59,126 INFO L119 LiptonReduction]: Number of co-enabled transitions 2912 [2023-08-25 22:19:00,326 INFO L134 LiptonReduction]: Checked pairs total: 5572 [2023-08-25 22:19:00,326 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-08-25 22:19:00,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 22:19:00,327 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;@698eb58, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 22:19:00,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-25 22:19:00,329 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 22:19:00,329 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2023-08-25 22:19:00,329 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-25 22:19:00,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:00,330 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:00,330 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 22:19:00,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:00,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1309253165, now seen corresponding path program 1 times [2023-08-25 22:19:00,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:00,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662831372] [2023-08-25 22:19:00,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:00,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:19:00,353 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 22:19:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:19:00,368 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 22:19:00,368 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 22:19:00,368 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-25 22:19:00,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-25 22:19:00,368 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 22:19:00,369 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-25 22:19:00,369 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 22:19:00,369 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-25 22:19:00,384 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 22:19:00,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 103 transitions, 251 flow [2023-08-25 22:19:00,396 INFO L124 PetriNetUnfolderBase]: 6/161 cut-off events. [2023-08-25 22:19:00,396 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-25 22:19:00,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 161 events. 6/161 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 320 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 148. Up to 12 conditions per place. [2023-08-25 22:19:00,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 103 transitions, 251 flow [2023-08-25 22:19:00,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 103 transitions, 251 flow [2023-08-25 22:19:00,397 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 22:19:00,397 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 103 transitions, 251 flow [2023-08-25 22:19:00,397 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 103 transitions, 251 flow [2023-08-25 22:19:00,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 103 transitions, 251 flow [2023-08-25 22:19:00,404 INFO L124 PetriNetUnfolderBase]: 6/161 cut-off events. [2023-08-25 22:19:00,404 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-25 22:19:00,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 161 events. 6/161 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 320 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 148. Up to 12 conditions per place. [2023-08-25 22:19:00,407 INFO L119 LiptonReduction]: Number of co-enabled transitions 5330 [2023-08-25 22:19:01,557 INFO L134 LiptonReduction]: Checked pairs total: 9763 [2023-08-25 22:19:01,557 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-08-25 22:19:01,558 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 22:19:01,558 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;@698eb58, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 22:19:01,558 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-25 22:19:01,559 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 22:19:01,559 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 22:19:01,559 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:19:01,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:01,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 22:19:01,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 15 more)] === [2023-08-25 22:19:01,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:01,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1104, now seen corresponding path program 1 times [2023-08-25 22:19:01,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:01,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101140195] [2023-08-25 22:19:01,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:01,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:01,562 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 22:19:01,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:01,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101140195] [2023-08-25 22:19:01,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101140195] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:01,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:01,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 22:19:01,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664617395] [2023-08-25 22:19:01,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:01,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 22:19:01,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:01,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 22:19:01,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 22:19:01,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 188 [2023-08-25 22:19:01,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 119 flow. Second operand has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 22:19:01,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:01,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 188 [2023-08-25 22:19:01,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:02,333 INFO L124 PetriNetUnfolderBase]: 8535/12203 cut-off events. [2023-08-25 22:19:02,333 INFO L125 PetriNetUnfolderBase]: For 6750/6750 co-relation queries the response was YES. [2023-08-25 22:19:02,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26689 conditions, 12203 events. 8535/12203 cut-off events. For 6750/6750 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 71166 event pairs, 8535 based on Foata normal form. 0/8674 useless extension candidates. Maximal degree in co-relation 5647. Up to 11266 conditions per place. [2023-08-25 22:19:02,383 INFO L140 encePairwiseOnDemand]: 176/188 looper letters, 22 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2023-08-25 22:19:02,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 25 transitions, 139 flow [2023-08-25 22:19:02,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 22:19:02,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 22:19:02,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 176 transitions. [2023-08-25 22:19:02,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2023-08-25 22:19:02,384 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 176 transitions. [2023-08-25 22:19:02,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 176 transitions. [2023-08-25 22:19:02,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:02,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 176 transitions. [2023-08-25 22:19:02,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 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 22:19:02,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states 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 22:19:02,386 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states 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 22:19:02,386 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 119 flow. Second operand 2 states and 176 transitions. [2023-08-25 22:19:02,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 25 transitions, 139 flow [2023-08-25 22:19:02,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 25 transitions, 119 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-08-25 22:19:02,392 INFO L231 Difference]: Finished difference. Result has 37 places, 25 transitions, 75 flow [2023-08-25 22:19:02,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=75, PETRI_PLACES=37, PETRI_TRANSITIONS=25} [2023-08-25 22:19:02,393 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -11 predicate places. [2023-08-25 22:19:02,393 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 25 transitions, 75 flow [2023-08-25 22:19:02,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 22:19:02,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:02,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-25 22:19:02,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-25 22:19:02,393 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 15 more)] === [2023-08-25 22:19:02,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:02,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1050963188, now seen corresponding path program 1 times [2023-08-25 22:19:02,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:02,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370238498] [2023-08-25 22:19:02,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:02,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:02,406 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 22:19:02,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:02,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370238498] [2023-08-25 22:19:02,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370238498] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:02,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:02,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:19:02,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722528527] [2023-08-25 22:19:02,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:02,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:19:02,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:02,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:19:02,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:19:02,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 188 [2023-08-25 22:19:02,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 25 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states 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 22:19:02,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:02,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 188 [2023-08-25 22:19:02,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:03,269 INFO L124 PetriNetUnfolderBase]: 12384/17359 cut-off events. [2023-08-25 22:19:03,270 INFO L125 PetriNetUnfolderBase]: For 1342/1342 co-relation queries the response was YES. [2023-08-25 22:19:03,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35564 conditions, 17359 events. 12384/17359 cut-off events. For 1342/1342 co-relation queries the response was YES. Maximal size of possible extension queue 1150. Compared 107879 event pairs, 6940 based on Foata normal form. 0/12590 useless extension candidates. Maximal degree in co-relation 35556. Up to 11057 conditions per place. [2023-08-25 22:19:03,425 INFO L140 encePairwiseOnDemand]: 181/188 looper letters, 34 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2023-08-25 22:19:03,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 211 flow [2023-08-25 22:19:03,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:03,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:03,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2023-08-25 22:19:03,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42907801418439717 [2023-08-25 22:19:03,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 242 transitions. [2023-08-25 22:19:03,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 242 transitions. [2023-08-25 22:19:03,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:03,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 242 transitions. [2023-08-25 22:19:03,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 22:19:03,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 22:19:03,428 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 22:19:03,428 INFO L175 Difference]: Start difference. First operand has 37 places, 25 transitions, 75 flow. Second operand 3 states and 242 transitions. [2023-08-25 22:19:03,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 211 flow [2023-08-25 22:19:03,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 211 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 22:19:03,429 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 121 flow [2023-08-25 22:19:03,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2023-08-25 22:19:03,429 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -7 predicate places. [2023-08-25 22:19:03,430 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 121 flow [2023-08-25 22:19:03,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states 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 22:19:03,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:03,430 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:03,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-25 22:19:03,430 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 15 more)] === [2023-08-25 22:19:03,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:03,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1445380334, now seen corresponding path program 1 times [2023-08-25 22:19:03,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:03,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895692715] [2023-08-25 22:19:03,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:03,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:03,441 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 22:19:03,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:03,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895692715] [2023-08-25 22:19:03,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895692715] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:03,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:03,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:19:03,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37590258] [2023-08-25 22:19:03,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:03,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:19:03,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:03,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:19:03,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:19:03,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 188 [2023-08-25 22:19:03,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 22:19:03,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:03,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 188 [2023-08-25 22:19:03,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:04,990 INFO L124 PetriNetUnfolderBase]: 17214/24347 cut-off events. [2023-08-25 22:19:04,991 INFO L125 PetriNetUnfolderBase]: For 13763/13763 co-relation queries the response was YES. [2023-08-25 22:19:05,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62071 conditions, 24347 events. 17214/24347 cut-off events. For 13763/13763 co-relation queries the response was YES. Maximal size of possible extension queue 1703. Compared 161736 event pairs, 8064 based on Foata normal form. 0/19341 useless extension candidates. Maximal degree in co-relation 62061. Up to 15695 conditions per place. [2023-08-25 22:19:05,146 INFO L140 encePairwiseOnDemand]: 181/188 looper letters, 38 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2023-08-25 22:19:05,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 51 transitions, 304 flow [2023-08-25 22:19:05,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:05,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:05,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2023-08-25 22:19:05,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42730496453900707 [2023-08-25 22:19:05,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 241 transitions. [2023-08-25 22:19:05,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 241 transitions. [2023-08-25 22:19:05,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:05,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 241 transitions. [2023-08-25 22:19:05,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 22:19:05,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 22:19:05,149 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 22:19:05,149 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 121 flow. Second operand 3 states and 241 transitions. [2023-08-25 22:19:05,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 51 transitions, 304 flow [2023-08-25 22:19:05,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 51 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:19:05,220 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 197 flow [2023-08-25 22:19:05,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-08-25 22:19:05,221 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2023-08-25 22:19:05,221 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 197 flow [2023-08-25 22:19:05,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 22:19:05,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:05,222 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:05,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-25 22:19:05,222 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 15 more)] === [2023-08-25 22:19:05,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:05,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1859246546, now seen corresponding path program 1 times [2023-08-25 22:19:05,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:05,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80214279] [2023-08-25 22:19:05,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:05,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:05,244 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 22:19:05,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:05,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80214279] [2023-08-25 22:19:05,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80214279] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:05,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:05,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:19:05,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653751593] [2023-08-25 22:19:05,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:05,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:19:05,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:05,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:19:05,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:19:05,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 188 [2023-08-25 22:19:05,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 197 flow. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states 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 22:19:05,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:05,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 188 [2023-08-25 22:19:05,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:06,524 INFO L124 PetriNetUnfolderBase]: 13946/19127 cut-off events. [2023-08-25 22:19:06,524 INFO L125 PetriNetUnfolderBase]: For 17220/17220 co-relation queries the response was YES. [2023-08-25 22:19:06,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56976 conditions, 19127 events. 13946/19127 cut-off events. For 17220/17220 co-relation queries the response was YES. Maximal size of possible extension queue 1381. Compared 121048 event pairs, 2700 based on Foata normal form. 0/15793 useless extension candidates. Maximal degree in co-relation 56965. Up to 15496 conditions per place. [2023-08-25 22:19:06,631 INFO L140 encePairwiseOnDemand]: 186/188 looper letters, 53 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-08-25 22:19:06,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 58 transitions, 409 flow [2023-08-25 22:19:06,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:06,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:06,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2023-08-25 22:19:06,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425531914893617 [2023-08-25 22:19:06,632 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 240 transitions. [2023-08-25 22:19:06,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 240 transitions. [2023-08-25 22:19:06,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:06,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 240 transitions. [2023-08-25 22:19:06,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states 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 22:19:06,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 22:19:06,634 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 22:19:06,634 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 197 flow. Second operand 3 states and 240 transitions. [2023-08-25 22:19:06,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 58 transitions, 409 flow [2023-08-25 22:19:06,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 58 transitions, 379 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:19:06,701 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 177 flow [2023-08-25 22:19:06,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-08-25 22:19:06,702 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -6 predicate places. [2023-08-25 22:19:06,702 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 177 flow [2023-08-25 22:19:06,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states 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 22:19:06,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:06,702 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:06,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-25 22:19:06,702 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 15 more)] === [2023-08-25 22:19:06,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:06,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1857122413, now seen corresponding path program 1 times [2023-08-25 22:19:06,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:06,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175460522] [2023-08-25 22:19:06,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:06,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:06,720 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 22:19:06,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:06,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175460522] [2023-08-25 22:19:06,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175460522] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:06,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:06,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:19:06,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221133377] [2023-08-25 22:19:06,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:06,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:19:06,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:06,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:19:06,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:19:06,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 188 [2023-08-25 22:19:06,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states 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 22:19:06,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:06,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 188 [2023-08-25 22:19:06,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:07,675 INFO L124 PetriNetUnfolderBase]: 11269/15577 cut-off events. [2023-08-25 22:19:07,675 INFO L125 PetriNetUnfolderBase]: For 11490/11490 co-relation queries the response was YES. [2023-08-25 22:19:07,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44880 conditions, 15577 events. 11269/15577 cut-off events. For 11490/11490 co-relation queries the response was YES. Maximal size of possible extension queue 1135. Compared 96211 event pairs, 1895 based on Foata normal form. 0/12813 useless extension candidates. Maximal degree in co-relation 44869. Up to 12576 conditions per place. [2023-08-25 22:19:07,769 INFO L140 encePairwiseOnDemand]: 186/188 looper letters, 50 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-08-25 22:19:07,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 55 transitions, 364 flow [2023-08-25 22:19:07,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:07,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:07,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-08-25 22:19:07,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42021276595744683 [2023-08-25 22:19:07,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-08-25 22:19:07,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-08-25 22:19:07,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:07,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-08-25 22:19:07,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states 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 22:19:07,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 22:19:07,772 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 22:19:07,772 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 177 flow. Second operand 3 states and 237 transitions. [2023-08-25 22:19:07,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 55 transitions, 364 flow [2023-08-25 22:19:07,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 55 transitions, 361 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:19:07,775 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 175 flow [2023-08-25 22:19:07,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2023-08-25 22:19:07,775 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -6 predicate places. [2023-08-25 22:19:07,775 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 175 flow [2023-08-25 22:19:07,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states 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 22:19:07,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:07,786 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:07,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-25 22:19:07,786 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 15 more)] === [2023-08-25 22:19:07,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:07,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1806780031, now seen corresponding path program 1 times [2023-08-25 22:19:07,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:07,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753139979] [2023-08-25 22:19:07,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:07,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:07,802 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 22:19:07,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:07,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753139979] [2023-08-25 22:19:07,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753139979] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:07,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:07,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:19:07,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049366554] [2023-08-25 22:19:07,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:07,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:19:07,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:07,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:19:07,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:19:07,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 188 [2023-08-25 22:19:07,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states 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 22:19:07,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:07,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 188 [2023-08-25 22:19:07,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:09,213 INFO L124 PetriNetUnfolderBase]: 14850/21601 cut-off events. [2023-08-25 22:19:09,213 INFO L125 PetriNetUnfolderBase]: For 20184/20184 co-relation queries the response was YES. [2023-08-25 22:19:09,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61590 conditions, 21601 events. 14850/21601 cut-off events. For 20184/20184 co-relation queries the response was YES. Maximal size of possible extension queue 1651. Compared 150230 event pairs, 6228 based on Foata normal form. 0/18162 useless extension candidates. Maximal degree in co-relation 61579. Up to 14235 conditions per place. [2023-08-25 22:19:09,334 INFO L140 encePairwiseOnDemand]: 181/188 looper letters, 40 selfloop transitions, 17 changer transitions 0/60 dead transitions. [2023-08-25 22:19:09,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 60 transitions, 409 flow [2023-08-25 22:19:09,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:09,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:09,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-08-25 22:19:09,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41843971631205673 [2023-08-25 22:19:09,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-08-25 22:19:09,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-08-25 22:19:09,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:09,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-08-25 22:19:09,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 22:19:09,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 22:19:09,336 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 22:19:09,337 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 175 flow. Second operand 3 states and 236 transitions. [2023-08-25 22:19:09,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 60 transitions, 409 flow [2023-08-25 22:19:09,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 60 transitions, 405 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:19:09,339 INFO L231 Difference]: Finished difference. Result has 45 places, 49 transitions, 347 flow [2023-08-25 22:19:09,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=347, PETRI_PLACES=45, PETRI_TRANSITIONS=49} [2023-08-25 22:19:09,339 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -3 predicate places. [2023-08-25 22:19:09,339 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 347 flow [2023-08-25 22:19:09,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states 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 22:19:09,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:09,340 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:09,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-25 22:19:09,340 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 15 more)] === [2023-08-25 22:19:09,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:09,340 INFO L85 PathProgramCache]: Analyzing trace with hash 175610352, now seen corresponding path program 1 times [2023-08-25 22:19:09,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:09,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597092638] [2023-08-25 22:19:09,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:09,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:09,363 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 22:19:09,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:09,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597092638] [2023-08-25 22:19:09,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597092638] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:09,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:09,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:19:09,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566818794] [2023-08-25 22:19:09,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:09,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:19:09,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:09,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:19:09,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:19:09,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 188 [2023-08-25 22:19:09,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 347 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 22:19:09,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:09,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 188 [2023-08-25 22:19:09,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:10,352 INFO L124 PetriNetUnfolderBase]: 11925/16849 cut-off events. [2023-08-25 22:19:10,353 INFO L125 PetriNetUnfolderBase]: For 28615/28615 co-relation queries the response was YES. [2023-08-25 22:19:10,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59535 conditions, 16849 events. 11925/16849 cut-off events. For 28615/28615 co-relation queries the response was YES. Maximal size of possible extension queue 1331. Compared 110608 event pairs, 2241 based on Foata normal form. 954/15750 useless extension candidates. Maximal degree in co-relation 59523. Up to 13484 conditions per place. [2023-08-25 22:19:10,470 INFO L140 encePairwiseOnDemand]: 186/188 looper letters, 64 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2023-08-25 22:19:10,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 71 transitions, 619 flow [2023-08-25 22:19:10,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:10,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:10,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2023-08-25 22:19:10,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148936170212766 [2023-08-25 22:19:10,471 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 234 transitions. [2023-08-25 22:19:10,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 234 transitions. [2023-08-25 22:19:10,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:10,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 234 transitions. [2023-08-25 22:19:10,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states 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 22:19:10,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 22:19:10,485 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 22:19:10,486 INFO L175 Difference]: Start difference. First operand has 45 places, 49 transitions, 347 flow. Second operand 3 states and 234 transitions. [2023-08-25 22:19:10,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 71 transitions, 619 flow [2023-08-25 22:19:10,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 71 transitions, 585 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:19:10,519 INFO L231 Difference]: Finished difference. Result has 44 places, 48 transitions, 317 flow [2023-08-25 22:19:10,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=44, PETRI_TRANSITIONS=48} [2023-08-25 22:19:10,520 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -4 predicate places. [2023-08-25 22:19:10,520 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 48 transitions, 317 flow [2023-08-25 22:19:10,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 22:19:10,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:10,520 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:10,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-25 22:19:10,520 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 15 more)] === [2023-08-25 22:19:10,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:10,520 INFO L85 PathProgramCache]: Analyzing trace with hash 226916098, now seen corresponding path program 1 times [2023-08-25 22:19:10,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:10,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801066087] [2023-08-25 22:19:10,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:10,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:10,538 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-25 22:19:10,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:10,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801066087] [2023-08-25 22:19:10,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801066087] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:10,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:10,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:19:10,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938865062] [2023-08-25 22:19:10,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:10,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:19:10,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:10,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:19:10,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:19:10,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 188 [2023-08-25 22:19:10,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 48 transitions, 317 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states 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 22:19:10,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:10,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 188 [2023-08-25 22:19:10,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:12,050 INFO L124 PetriNetUnfolderBase]: 14852/22111 cut-off events. [2023-08-25 22:19:12,050 INFO L125 PetriNetUnfolderBase]: For 37417/37417 co-relation queries the response was YES. [2023-08-25 22:19:12,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72698 conditions, 22111 events. 14852/22111 cut-off events. For 37417/37417 co-relation queries the response was YES. Maximal size of possible extension queue 1850. Compared 161213 event pairs, 5610 based on Foata normal form. 0/19811 useless extension candidates. Maximal degree in co-relation 72686. Up to 14769 conditions per place. [2023-08-25 22:19:12,235 INFO L140 encePairwiseOnDemand]: 181/188 looper letters, 47 selfloop transitions, 29 changer transitions 0/79 dead transitions. [2023-08-25 22:19:12,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 79 transitions, 684 flow [2023-08-25 22:19:12,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:12,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:12,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-08-25 22:19:12,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41312056737588654 [2023-08-25 22:19:12,237 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-08-25 22:19:12,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-08-25 22:19:12,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:12,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-08-25 22:19:12,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 22:19:12,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 22:19:12,238 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 22:19:12,238 INFO L175 Difference]: Start difference. First operand has 44 places, 48 transitions, 317 flow. Second operand 3 states and 233 transitions. [2023-08-25 22:19:12,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 79 transitions, 684 flow [2023-08-25 22:19:12,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 79 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:19:12,253 INFO L231 Difference]: Finished difference. Result has 47 places, 69 transitions, 647 flow [2023-08-25 22:19:12,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=647, PETRI_PLACES=47, PETRI_TRANSITIONS=69} [2023-08-25 22:19:12,254 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2023-08-25 22:19:12,254 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 69 transitions, 647 flow [2023-08-25 22:19:12,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states 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 22:19:12,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:12,254 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:12,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-25 22:19:12,254 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 15 more)] === [2023-08-25 22:19:12,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:12,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1555531395, now seen corresponding path program 1 times [2023-08-25 22:19:12,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:12,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692595952] [2023-08-25 22:19:12,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:12,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:12,278 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-25 22:19:12,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:12,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692595952] [2023-08-25 22:19:12,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692595952] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:12,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:12,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:19:12,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751429685] [2023-08-25 22:19:12,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:12,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:19:12,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:12,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:19:12,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:19:12,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 188 [2023-08-25 22:19:12,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 69 transitions, 647 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states 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 22:19:12,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:12,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 188 [2023-08-25 22:19:12,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:13,603 INFO L124 PetriNetUnfolderBase]: 11939/17421 cut-off events. [2023-08-25 22:19:13,603 INFO L125 PetriNetUnfolderBase]: For 46459/46459 co-relation queries the response was YES. [2023-08-25 22:19:13,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69794 conditions, 17421 events. 11939/17421 cut-off events. For 46459/46459 co-relation queries the response was YES. Maximal size of possible extension queue 1494. Compared 121392 event pairs, 2639 based on Foata normal form. 1012/17369 useless extension candidates. Maximal degree in co-relation 69781. Up to 13486 conditions per place. [2023-08-25 22:19:13,753 INFO L140 encePairwiseOnDemand]: 186/188 looper letters, 84 selfloop transitions, 8 changer transitions 2/97 dead transitions. [2023-08-25 22:19:13,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 97 transitions, 1070 flow [2023-08-25 22:19:13,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:13,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:13,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-08-25 22:19:13,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095744680851064 [2023-08-25 22:19:13,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-08-25 22:19:13,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-08-25 22:19:13,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:13,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-08-25 22:19:13,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states 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 22:19:13,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 22:19:13,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 22:19:13,757 INFO L175 Difference]: Start difference. First operand has 47 places, 69 transitions, 647 flow. Second operand 3 states and 231 transitions. [2023-08-25 22:19:13,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 97 transitions, 1070 flow [2023-08-25 22:19:13,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 97 transitions, 1012 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:19:13,825 INFO L231 Difference]: Finished difference. Result has 46 places, 67 transitions, 599 flow [2023-08-25 22:19:13,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=599, PETRI_PLACES=46, PETRI_TRANSITIONS=67} [2023-08-25 22:19:13,826 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2023-08-25 22:19:13,826 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 67 transitions, 599 flow [2023-08-25 22:19:13,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states 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 22:19:13,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:13,826 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:13,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-25 22:19:13,826 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 15 more)] === [2023-08-25 22:19:13,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:13,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1826687678, now seen corresponding path program 1 times [2023-08-25 22:19:13,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:13,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541505422] [2023-08-25 22:19:13,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:13,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:13,846 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-08-25 22:19:13,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:13,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541505422] [2023-08-25 22:19:13,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541505422] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:13,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:13,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:19:13,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157935888] [2023-08-25 22:19:13,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:13,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:19:13,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:13,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:19:13,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:19:13,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 188 [2023-08-25 22:19:13,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 67 transitions, 599 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states 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 22:19:13,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:13,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 188 [2023-08-25 22:19:13,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:14,772 INFO L124 PetriNetUnfolderBase]: 9027/14711 cut-off events. [2023-08-25 22:19:14,772 INFO L125 PetriNetUnfolderBase]: For 39079/39079 co-relation queries the response was YES. [2023-08-25 22:19:14,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55710 conditions, 14711 events. 9027/14711 cut-off events. For 39079/39079 co-relation queries the response was YES. Maximal size of possible extension queue 1240. Compared 114497 event pairs, 4197 based on Foata normal form. 512/15183 useless extension candidates. Maximal degree in co-relation 55697. Up to 11572 conditions per place. [2023-08-25 22:19:14,886 INFO L140 encePairwiseOnDemand]: 182/188 looper letters, 53 selfloop transitions, 47 changer transitions 1/104 dead transitions. [2023-08-25 22:19:14,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 104 transitions, 1179 flow [2023-08-25 22:19:14,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:14,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:14,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 228 transitions. [2023-08-25 22:19:14,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40425531914893614 [2023-08-25 22:19:14,887 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 228 transitions. [2023-08-25 22:19:14,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 228 transitions. [2023-08-25 22:19:14,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:14,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 228 transitions. [2023-08-25 22:19:14,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 22:19:14,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 22:19:14,889 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 22:19:14,889 INFO L175 Difference]: Start difference. First operand has 46 places, 67 transitions, 599 flow. Second operand 3 states and 228 transitions. [2023-08-25 22:19:14,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 104 transitions, 1179 flow [2023-08-25 22:19:14,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 104 transitions, 1163 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:19:14,907 INFO L231 Difference]: Finished difference. Result has 47 places, 98 transitions, 1140 flow [2023-08-25 22:19:14,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1140, PETRI_PLACES=47, PETRI_TRANSITIONS=98} [2023-08-25 22:19:14,907 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2023-08-25 22:19:14,907 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 98 transitions, 1140 flow [2023-08-25 22:19:14,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states 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 22:19:14,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:14,908 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:14,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-25 22:19:14,908 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 15 more)] === [2023-08-25 22:19:14,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:14,908 INFO L85 PathProgramCache]: Analyzing trace with hash 792746691, now seen corresponding path program 1 times [2023-08-25 22:19:14,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:14,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156146723] [2023-08-25 22:19:14,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:14,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:14,930 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-08-25 22:19:14,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:14,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156146723] [2023-08-25 22:19:14,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156146723] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:14,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:14,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:19:14,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959801123] [2023-08-25 22:19:14,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:14,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:19:14,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:14,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:19:14,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:19:14,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 188 [2023-08-25 22:19:14,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 98 transitions, 1140 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states 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 22:19:14,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:14,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 188 [2023-08-25 22:19:14,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:15,873 INFO L124 PetriNetUnfolderBase]: 6714/11536 cut-off events. [2023-08-25 22:19:15,873 INFO L125 PetriNetUnfolderBase]: For 46137/46137 co-relation queries the response was YES. [2023-08-25 22:19:15,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48773 conditions, 11536 events. 6714/11536 cut-off events. For 46137/46137 co-relation queries the response was YES. Maximal size of possible extension queue 957. Compared 93325 event pairs, 2439 based on Foata normal form. 862/12357 useless extension candidates. Maximal degree in co-relation 48759. Up to 5592 conditions per place. [2023-08-25 22:19:15,939 INFO L140 encePairwiseOnDemand]: 186/188 looper letters, 0 selfloop transitions, 0 changer transitions 134/134 dead transitions. [2023-08-25 22:19:15,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 134 transitions, 1796 flow [2023-08-25 22:19:15,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:15,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:15,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2023-08-25 22:19:15,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024822695035461 [2023-08-25 22:19:15,940 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2023-08-25 22:19:15,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2023-08-25 22:19:15,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:15,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2023-08-25 22:19:15,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states 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 22:19:15,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 22:19:15,942 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 22:19:15,942 INFO L175 Difference]: Start difference. First operand has 47 places, 98 transitions, 1140 flow. Second operand 3 states and 227 transitions. [2023-08-25 22:19:15,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 134 transitions, 1796 flow [2023-08-25 22:19:15,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 134 transitions, 1749 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:19:15,986 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2023-08-25 22:19:15,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2023-08-25 22:19:15,986 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2023-08-25 22:19:15,986 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2023-08-25 22:19:15,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states 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 22:19:15,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 19 remaining) [2023-08-25 22:19:15,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-08-25 22:19:15,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-08-25 22:19:15,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (15 of 19 remaining) [2023-08-25 22:19:15,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (14 of 19 remaining) [2023-08-25 22:19:15,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2023-08-25 22:19:15,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-08-25 22:19:15,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-08-25 22:19:15,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-08-25 22:19:15,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-08-25 22:19:15,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (8 of 19 remaining) [2023-08-25 22:19:15,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (7 of 19 remaining) [2023-08-25 22:19:15,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (6 of 19 remaining) [2023-08-25 22:19:15,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (5 of 19 remaining) [2023-08-25 22:19:15,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2023-08-25 22:19:15,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-08-25 22:19:15,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-08-25 22:19:15,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-08-25 22:19:15,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-08-25 22:19:15,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-25 22:19:15,988 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:15,989 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 (1/2) [2023-08-25 22:19:15,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 103 transitions, 251 flow [2023-08-25 22:19:15,999 INFO L124 PetriNetUnfolderBase]: 6/161 cut-off events. [2023-08-25 22:19:15,999 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-25 22:19:16,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 161 events. 6/161 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 320 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 148. Up to 12 conditions per place. [2023-08-25 22:19:16,000 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 103 transitions, 251 flow [2023-08-25 22:19:16,000 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 96 transitions, 237 flow [2023-08-25 22:19:16,000 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 22:19:16,001 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 96 transitions, 237 flow [2023-08-25 22:19:16,001 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 96 transitions, 237 flow [2023-08-25 22:19:16,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 96 transitions, 237 flow [2023-08-25 22:19:16,008 INFO L124 PetriNetUnfolderBase]: 0/124 cut-off events. [2023-08-25 22:19:16,008 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-25 22:19:16,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 124 events. 0/124 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 179 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2023-08-25 22:19:16,010 INFO L119 LiptonReduction]: Number of co-enabled transitions 4550 [2023-08-25 22:19:17,539 INFO L134 LiptonReduction]: Checked pairs total: 10058 [2023-08-25 22:19:17,539 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-08-25 22:19:17,540 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 22:19:17,542 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;@698eb58, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 22:19:17,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-25 22:19:17,546 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 22:19:17,546 INFO L124 PetriNetUnfolderBase]: 0/41 cut-off events. [2023-08-25 22:19:17,546 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-25 22:19:17,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:17,546 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:17,546 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 22:19:17,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:17,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1343981438, now seen corresponding path program 1 times [2023-08-25 22:19:17,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:17,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377056565] [2023-08-25 22:19:17,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:17,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:19:17,573 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 22:19:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:19:17,596 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 22:19:17,596 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 22:19:17,596 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-25 22:19:17,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-25 22:19:17,597 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 22:19:17,597 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-25 22:19:17,597 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 22:19:17,597 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-25 22:19:17,614 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 22:19:17,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 117 transitions, 294 flow [2023-08-25 22:19:17,626 INFO L124 PetriNetUnfolderBase]: 7/187 cut-off events. [2023-08-25 22:19:17,626 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-25 22:19:17,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 187 events. 7/187 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 364 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 180. Up to 14 conditions per place. [2023-08-25 22:19:17,627 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 117 transitions, 294 flow [2023-08-25 22:19:17,628 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 117 transitions, 294 flow [2023-08-25 22:19:17,628 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 22:19:17,628 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 117 transitions, 294 flow [2023-08-25 22:19:17,628 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 117 transitions, 294 flow [2023-08-25 22:19:17,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 117 transitions, 294 flow [2023-08-25 22:19:17,639 INFO L124 PetriNetUnfolderBase]: 7/187 cut-off events. [2023-08-25 22:19:17,639 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-25 22:19:17,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 187 events. 7/187 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 364 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 180. Up to 14 conditions per place. [2023-08-25 22:19:17,643 INFO L119 LiptonReduction]: Number of co-enabled transitions 7488 [2023-08-25 22:19:19,102 INFO L134 LiptonReduction]: Checked pairs total: 15153 [2023-08-25 22:19:19,102 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-08-25 22:19:19,103 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 22:19:19,103 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;@698eb58, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 22:19:19,104 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-25 22:19:19,104 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 22:19:19,104 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 22:19:19,104 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:19:19,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:19,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 22:19:19,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 22:19:19,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:19,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1409, now seen corresponding path program 1 times [2023-08-25 22:19:19,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:19,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059384022] [2023-08-25 22:19:19,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:19,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:19,108 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 22:19:19,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:19,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059384022] [2023-08-25 22:19:19,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059384022] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:19,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:19,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 22:19:19,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343532536] [2023-08-25 22:19:19,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:19,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 22:19:19,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:19,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 22:19:19,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 22:19:19,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 213 [2023-08-25 22:19:19,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 146 flow. Second operand has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 22:19:19,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:19,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 213 [2023-08-25 22:19:19,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:22,461 INFO L124 PetriNetUnfolderBase]: 42327/57003 cut-off events. [2023-08-25 22:19:22,462 INFO L125 PetriNetUnfolderBase]: For 39518/39518 co-relation queries the response was YES. [2023-08-25 22:19:22,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125506 conditions, 57003 events. 42327/57003 cut-off events. For 39518/39518 co-relation queries the response was YES. Maximal size of possible extension queue 2746. Compared 348940 event pairs, 42327 based on Foata normal form. 0/40164 useless extension candidates. Maximal degree in co-relation 27279. Up to 53250 conditions per place. [2023-08-25 22:19:22,726 INFO L140 encePairwiseOnDemand]: 199/213 looper letters, 26 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-08-25 22:19:22,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 29 transitions, 170 flow [2023-08-25 22:19:22,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 22:19:22,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 22:19:22,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 198 transitions. [2023-08-25 22:19:22,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4647887323943662 [2023-08-25 22:19:22,741 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 198 transitions. [2023-08-25 22:19:22,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 198 transitions. [2023-08-25 22:19:22,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:22,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 198 transitions. [2023-08-25 22:19:22,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 99.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 22:19:22,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:19:22,745 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:19:22,745 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 146 flow. Second operand 2 states and 198 transitions. [2023-08-25 22:19:22,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 29 transitions, 170 flow [2023-08-25 22:19:22,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 29 transitions, 140 flow, removed 15 selfloop flow, removed 0 redundant places. [2023-08-25 22:19:22,769 INFO L231 Difference]: Finished difference. Result has 43 places, 29 transitions, 88 flow [2023-08-25 22:19:22,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2023-08-25 22:19:22,769 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -13 predicate places. [2023-08-25 22:19:22,769 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 88 flow [2023-08-25 22:19:22,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 22:19:22,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:22,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-25 22:19:22,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-25 22:19:22,770 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 22:19:22,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:22,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1344608707, now seen corresponding path program 1 times [2023-08-25 22:19:22,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:22,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236008733] [2023-08-25 22:19:22,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:22,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:22,879 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 22:19:22,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:22,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236008733] [2023-08-25 22:19:22,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236008733] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:22,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:22,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:19:22,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247034313] [2023-08-25 22:19:22,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:22,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:19:22,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:22,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:19:22,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:19:22,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 213 [2023-08-25 22:19:22,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states 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 22:19:22,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:22,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 213 [2023-08-25 22:19:22,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:27,148 INFO L124 PetriNetUnfolderBase]: 62014/82081 cut-off events. [2023-08-25 22:19:27,149 INFO L125 PetriNetUnfolderBase]: For 5435/5435 co-relation queries the response was YES. [2023-08-25 22:19:27,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167566 conditions, 82081 events. 62014/82081 cut-off events. For 5435/5435 co-relation queries the response was YES. Maximal size of possible extension queue 4290. Compared 524600 event pairs, 35952 based on Foata normal form. 0/59906 useless extension candidates. Maximal degree in co-relation 167557. Up to 54027 conditions per place. [2023-08-25 22:19:27,768 INFO L140 encePairwiseOnDemand]: 205/213 looper letters, 41 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2023-08-25 22:19:27,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 253 flow [2023-08-25 22:19:27,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:27,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:27,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 274 transitions. [2023-08-25 22:19:27,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4287949921752739 [2023-08-25 22:19:27,776 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 274 transitions. [2023-08-25 22:19:27,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 274 transitions. [2023-08-25 22:19:27,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:27,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 274 transitions. [2023-08-25 22:19:27,777 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 22:19:27,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:19:27,788 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:19:27,788 INFO L175 Difference]: Start difference. First operand has 43 places, 29 transitions, 88 flow. Second operand 3 states and 274 transitions. [2023-08-25 22:19:27,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 253 flow [2023-08-25 22:19:27,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 51 transitions, 253 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 22:19:27,796 INFO L231 Difference]: Finished difference. Result has 47 places, 35 transitions, 142 flow [2023-08-25 22:19:27,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=35} [2023-08-25 22:19:27,797 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -9 predicate places. [2023-08-25 22:19:27,797 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 35 transitions, 142 flow [2023-08-25 22:19:27,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states 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 22:19:27,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:27,797 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:27,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-25 22:19:27,797 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 22:19:27,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:27,797 INFO L85 PathProgramCache]: Analyzing trace with hash -216865087, now seen corresponding path program 1 times [2023-08-25 22:19:27,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:27,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715461663] [2023-08-25 22:19:27,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:27,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:27,817 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 22:19:27,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:27,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715461663] [2023-08-25 22:19:27,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715461663] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:27,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:27,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:19:27,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057292586] [2023-08-25 22:19:27,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:27,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:19:27,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:27,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:19:27,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:19:27,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 213 [2023-08-25 22:19:27,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 35 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states 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 22:19:27,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:27,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 213 [2023-08-25 22:19:27,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:35,103 INFO L124 PetriNetUnfolderBase]: 87642/116859 cut-off events. [2023-08-25 22:19:35,103 INFO L125 PetriNetUnfolderBase]: For 63799/63799 co-relation queries the response was YES. [2023-08-25 22:19:35,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296135 conditions, 116859 events. 87642/116859 cut-off events. For 63799/63799 co-relation queries the response was YES. Maximal size of possible extension queue 6344. Compared 794557 event pairs, 43070 based on Foata normal form. 0/90803 useless extension candidates. Maximal degree in co-relation 296124. Up to 77979 conditions per place. [2023-08-25 22:19:36,055 INFO L140 encePairwiseOnDemand]: 205/213 looper letters, 46 selfloop transitions, 12 changer transitions 0/61 dead transitions. [2023-08-25 22:19:36,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 61 transitions, 366 flow [2023-08-25 22:19:36,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:36,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:36,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2023-08-25 22:19:36,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4272300469483568 [2023-08-25 22:19:36,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2023-08-25 22:19:36,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2023-08-25 22:19:36,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:36,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2023-08-25 22:19:36,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states 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 22:19:36,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:19:36,058 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:19:36,058 INFO L175 Difference]: Start difference. First operand has 47 places, 35 transitions, 142 flow. Second operand 3 states and 273 transitions. [2023-08-25 22:19:36,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 61 transitions, 366 flow [2023-08-25 22:19:37,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:19:37,279 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 236 flow [2023-08-25 22:19:37,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2023-08-25 22:19:37,279 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2023-08-25 22:19:37,279 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 236 flow [2023-08-25 22:19:37,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states 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 22:19:37,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:37,280 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:37,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-25 22:19:37,284 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 22:19:37,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:37,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1869828447, now seen corresponding path program 1 times [2023-08-25 22:19:37,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:37,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367631164] [2023-08-25 22:19:37,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:37,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:37,335 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 22:19:37,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:37,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367631164] [2023-08-25 22:19:37,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367631164] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:37,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:37,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:19:37,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136361070] [2023-08-25 22:19:37,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:37,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:19:37,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:37,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:19:37,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:19:37,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 213 [2023-08-25 22:19:37,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 236 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states 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 22:19:37,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:37,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 213 [2023-08-25 22:19:37,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:43,018 INFO L124 PetriNetUnfolderBase]: 71236/92293 cut-off events. [2023-08-25 22:19:43,019 INFO L125 PetriNetUnfolderBase]: For 80427/80427 co-relation queries the response was YES. [2023-08-25 22:19:43,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272368 conditions, 92293 events. 71236/92293 cut-off events. For 80427/80427 co-relation queries the response was YES. Maximal size of possible extension queue 5175. Compared 590605 event pairs, 13780 based on Foata normal form. 0/73301 useless extension candidates. Maximal degree in co-relation 272356. Up to 74462 conditions per place. [2023-08-25 22:19:43,756 INFO L140 encePairwiseOnDemand]: 211/213 looper letters, 65 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-08-25 22:19:43,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 70 transitions, 497 flow [2023-08-25 22:19:43,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:43,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:43,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2023-08-25 22:19:43,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42566510172143973 [2023-08-25 22:19:43,757 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2023-08-25 22:19:43,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2023-08-25 22:19:43,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:43,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2023-08-25 22:19:43,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states 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 22:19:43,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:19:43,758 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:19:43,758 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 236 flow. Second operand 3 states and 272 transitions. [2023-08-25 22:19:43,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 70 transitions, 497 flow [2023-08-25 22:19:44,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 70 transitions, 461 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:19:44,768 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 212 flow [2023-08-25 22:19:44,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2023-08-25 22:19:44,768 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -8 predicate places. [2023-08-25 22:19:44,768 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 212 flow [2023-08-25 22:19:44,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states 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 22:19:44,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:44,768 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:44,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-25 22:19:44,769 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 22:19:44,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:44,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1867121269, now seen corresponding path program 1 times [2023-08-25 22:19:44,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:44,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497360441] [2023-08-25 22:19:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:44,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:44,792 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 22:19:44,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:44,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497360441] [2023-08-25 22:19:44,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497360441] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:44,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:44,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:19:44,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208370694] [2023-08-25 22:19:44,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:44,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:19:44,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:44,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:19:44,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:19:44,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 213 [2023-08-25 22:19:44,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states 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 22:19:44,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:44,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 213 [2023-08-25 22:19:44,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:49,161 INFO L124 PetriNetUnfolderBase]: 57777/75233 cut-off events. [2023-08-25 22:19:49,161 INFO L125 PetriNetUnfolderBase]: For 53296/53296 co-relation queries the response was YES. [2023-08-25 22:19:49,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214573 conditions, 75233 events. 57777/75233 cut-off events. For 53296/53296 co-relation queries the response was YES. Maximal size of possible extension queue 4281. Compared 471980 event pairs, 9807 based on Foata normal form. 0/60115 useless extension candidates. Maximal degree in co-relation 214561. Up to 60562 conditions per place. [2023-08-25 22:19:49,785 INFO L140 encePairwiseOnDemand]: 211/213 looper letters, 62 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-25 22:19:49,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 67 transitions, 446 flow [2023-08-25 22:19:49,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:49,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:49,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2023-08-25 22:19:49,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4209702660406886 [2023-08-25 22:19:49,786 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2023-08-25 22:19:49,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2023-08-25 22:19:49,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:49,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2023-08-25 22:19:49,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states 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 22:19:49,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:19:49,788 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:19:49,788 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 212 flow. Second operand 3 states and 269 transitions. [2023-08-25 22:19:49,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 67 transitions, 446 flow [2023-08-25 22:19:49,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 67 transitions, 443 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:19:49,796 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 210 flow [2023-08-25 22:19:49,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2023-08-25 22:19:49,796 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -8 predicate places. [2023-08-25 22:19:49,796 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 210 flow [2023-08-25 22:19:49,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states 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 22:19:49,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:49,797 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:49,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-25 22:19:49,797 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 22:19:49,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:49,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1740982639, now seen corresponding path program 1 times [2023-08-25 22:19:49,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:49,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429990977] [2023-08-25 22:19:49,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:49,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:49,810 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 22:19:49,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:49,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429990977] [2023-08-25 22:19:49,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429990977] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:49,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:49,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:19:49,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139871882] [2023-08-25 22:19:49,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:49,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:19:49,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:49,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:19:49,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:19:49,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 213 [2023-08-25 22:19:49,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 22:19:49,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:49,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 213 [2023-08-25 22:19:49,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:19:56,233 INFO L124 PetriNetUnfolderBase]: 78368/106611 cut-off events. [2023-08-25 22:19:56,233 INFO L125 PetriNetUnfolderBase]: For 99801/99801 co-relation queries the response was YES. [2023-08-25 22:19:56,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301472 conditions, 106611 events. 78368/106611 cut-off events. For 99801/99801 co-relation queries the response was YES. Maximal size of possible extension queue 6232. Compared 758449 event pairs, 34508 based on Foata normal form. 0/86986 useless extension candidates. Maximal degree in co-relation 301460. Up to 72725 conditions per place. [2023-08-25 22:19:57,155 INFO L140 encePairwiseOnDemand]: 205/213 looper letters, 50 selfloop transitions, 21 changer transitions 0/74 dead transitions. [2023-08-25 22:19:57,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 74 transitions, 507 flow [2023-08-25 22:19:57,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:19:57,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:19:57,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2023-08-25 22:19:57,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4194053208137715 [2023-08-25 22:19:57,157 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2023-08-25 22:19:57,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2023-08-25 22:19:57,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:19:57,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2023-08-25 22:19:57,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states 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 22:19:57,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:19:57,158 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:19:57,159 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 210 flow. Second operand 3 states and 268 transitions. [2023-08-25 22:19:57,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 74 transitions, 507 flow [2023-08-25 22:19:57,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 74 transitions, 503 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:19:57,181 INFO L231 Difference]: Finished difference. Result has 51 places, 60 transitions, 430 flow [2023-08-25 22:19:57,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=430, PETRI_PLACES=51, PETRI_TRANSITIONS=60} [2023-08-25 22:19:57,182 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-08-25 22:19:57,182 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 60 transitions, 430 flow [2023-08-25 22:19:57,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 22:19:57,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:19:57,182 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:19:57,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-25 22:19:57,183 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 22:19:57,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:19:57,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1864117803, now seen corresponding path program 1 times [2023-08-25 22:19:57,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:19:57,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926506700] [2023-08-25 22:19:57,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:19:57,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:19:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:19:57,259 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 22:19:57,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:19:57,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926506700] [2023-08-25 22:19:57,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926506700] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:19:57,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:19:57,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:19:57,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303256188] [2023-08-25 22:19:57,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:19:57,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:19:57,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:19:57,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:19:57,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:19:57,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 213 [2023-08-25 22:19:57,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 60 transitions, 430 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 22:19:57,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:19:57,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 213 [2023-08-25 22:19:57,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:20:02,477 INFO L124 PetriNetUnfolderBase]: 63123/83371 cut-off events. [2023-08-25 22:20:02,477 INFO L125 PetriNetUnfolderBase]: For 140677/140677 co-relation queries the response was YES. [2023-08-25 22:20:02,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290090 conditions, 83371 events. 63123/83371 cut-off events. For 140677/140677 co-relation queries the response was YES. Maximal size of possible extension queue 5044. Compared 553197 event pairs, 11449 based on Foata normal form. 4008/74526 useless extension candidates. Maximal degree in co-relation 290077. Up to 66634 conditions per place. [2023-08-25 22:20:03,030 INFO L140 encePairwiseOnDemand]: 211/213 looper letters, 82 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2023-08-25 22:20:03,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 89 transitions, 781 flow [2023-08-25 22:20:03,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:20:03,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:20:03,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 266 transitions. [2023-08-25 22:20:03,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4162754303599374 [2023-08-25 22:20:03,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 266 transitions. [2023-08-25 22:20:03,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 266 transitions. [2023-08-25 22:20:03,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:20:03,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 266 transitions. [2023-08-25 22:20:03,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states 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 22:20:03,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:20:03,033 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:20:03,033 INFO L175 Difference]: Start difference. First operand has 51 places, 60 transitions, 430 flow. Second operand 3 states and 266 transitions. [2023-08-25 22:20:03,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 89 transitions, 781 flow [2023-08-25 22:20:03,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 89 transitions, 739 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:20:03,287 INFO L231 Difference]: Finished difference. Result has 50 places, 59 transitions, 392 flow [2023-08-25 22:20:03,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=392, PETRI_PLACES=50, PETRI_TRANSITIONS=59} [2023-08-25 22:20:03,288 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2023-08-25 22:20:03,288 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 59 transitions, 392 flow [2023-08-25 22:20:03,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 22:20:03,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:20:03,288 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:20:03,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-08-25 22:20:03,288 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 22:20:03,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:20:03,288 INFO L85 PathProgramCache]: Analyzing trace with hash -593099316, now seen corresponding path program 1 times [2023-08-25 22:20:03,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:20:03,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552323954] [2023-08-25 22:20:03,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:20:03,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:20:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:20:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-25 22:20:03,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:20:03,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552323954] [2023-08-25 22:20:03,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552323954] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:20:03,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:20:03,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:20:03,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703271005] [2023-08-25 22:20:03,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:20:03,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:20:03,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:20:03,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:20:03,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:20:03,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 213 [2023-08-25 22:20:03,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 59 transitions, 392 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 22:20:03,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:20:03,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 213 [2023-08-25 22:20:03,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:20:10,812 INFO L124 PetriNetUnfolderBase]: 82894/114621 cut-off events. [2023-08-25 22:20:10,812 INFO L125 PetriNetUnfolderBase]: For 202351/202351 co-relation queries the response was YES. [2023-08-25 22:20:11,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372684 conditions, 114621 events. 82894/114621 cut-off events. For 202351/202351 co-relation queries the response was YES. Maximal size of possible extension queue 7139. Compared 853644 event pairs, 32594 based on Foata normal form. 0/98741 useless extension candidates. Maximal degree in co-relation 372671. Up to 78927 conditions per place. [2023-08-25 22:20:11,695 INFO L140 encePairwiseOnDemand]: 205/213 looper letters, 61 selfloop transitions, 37 changer transitions 0/101 dead transitions. [2023-08-25 22:20:11,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 101 transitions, 878 flow [2023-08-25 22:20:11,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:20:11,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:20:11,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-08-25 22:20:11,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41471048513302033 [2023-08-25 22:20:11,696 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-08-25 22:20:11,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-08-25 22:20:11,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:20:11,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-08-25 22:20:11,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states 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 22:20:11,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:20:11,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:20:11,698 INFO L175 Difference]: Start difference. First operand has 50 places, 59 transitions, 392 flow. Second operand 3 states and 265 transitions. [2023-08-25 22:20:11,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 101 transitions, 878 flow [2023-08-25 22:20:11,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 101 transitions, 870 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:20:11,725 INFO L231 Difference]: Finished difference. Result has 53 places, 88 transitions, 834 flow [2023-08-25 22:20:11,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=834, PETRI_PLACES=53, PETRI_TRANSITIONS=88} [2023-08-25 22:20:11,726 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2023-08-25 22:20:11,726 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 88 transitions, 834 flow [2023-08-25 22:20:11,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 22:20:11,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:20:11,726 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:20:11,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-25 22:20:11,726 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 22:20:11,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:20:11,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1206204365, now seen corresponding path program 1 times [2023-08-25 22:20:11,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:20:11,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786842684] [2023-08-25 22:20:11,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:20:11,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:20:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:20:11,744 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-25 22:20:11,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:20:11,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786842684] [2023-08-25 22:20:11,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786842684] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:20:11,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:20:11,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:20:11,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186849119] [2023-08-25 22:20:11,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:20:11,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:20:11,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:20:11,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:20:11,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:20:11,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 213 [2023-08-25 22:20:11,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 88 transitions, 834 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states 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 22:20:11,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:20:11,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 213 [2023-08-25 22:20:11,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:20:17,757 INFO L124 PetriNetUnfolderBase]: 66491/89377 cut-off events. [2023-08-25 22:20:17,757 INFO L125 PetriNetUnfolderBase]: For 243725/243725 co-relation queries the response was YES. [2023-08-25 22:20:18,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353393 conditions, 89377 events. 66491/89377 cut-off events. For 243725/243725 co-relation queries the response was YES. Maximal size of possible extension queue 5781. Compared 625602 event pairs, 13367 based on Foata normal form. 4542/84563 useless extension candidates. Maximal degree in co-relation 353379. Up to 70760 conditions per place. [2023-08-25 22:20:18,386 INFO L140 encePairwiseOnDemand]: 211/213 looper letters, 117 selfloop transitions, 8 changer transitions 0/128 dead transitions. [2023-08-25 22:20:18,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 128 transitions, 1420 flow [2023-08-25 22:20:18,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:20:18,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:20:18,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2023-08-25 22:20:18,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41158059467918623 [2023-08-25 22:20:18,388 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2023-08-25 22:20:18,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2023-08-25 22:20:18,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:20:18,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2023-08-25 22:20:18,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states 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 22:20:18,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:20:18,389 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:20:18,389 INFO L175 Difference]: Start difference. First operand has 53 places, 88 transitions, 834 flow. Second operand 3 states and 263 transitions. [2023-08-25 22:20:18,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 128 transitions, 1420 flow [2023-08-25 22:20:18,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 128 transitions, 1346 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:20:18,936 INFO L231 Difference]: Finished difference. Result has 52 places, 87 transitions, 772 flow [2023-08-25 22:20:18,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=772, PETRI_PLACES=52, PETRI_TRANSITIONS=87} [2023-08-25 22:20:18,937 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2023-08-25 22:20:18,937 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 87 transitions, 772 flow [2023-08-25 22:20:18,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states 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 22:20:18,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:20:18,937 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:20:18,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-08-25 22:20:18,937 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 22:20:18,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:20:18,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1154910226, now seen corresponding path program 1 times [2023-08-25 22:20:18,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:20:18,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095081034] [2023-08-25 22:20:18,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:20:18,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:20:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:20:18,951 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-08-25 22:20:18,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:20:18,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095081034] [2023-08-25 22:20:18,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095081034] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:20:18,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:20:18,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:20:18,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718057456] [2023-08-25 22:20:18,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:20:18,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:20:18,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:20:18,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:20:18,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:20:18,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 213 [2023-08-25 22:20:18,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 87 transitions, 772 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states 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 22:20:18,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:20:18,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 213 [2023-08-25 22:20:18,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:20:27,127 INFO L124 PetriNetUnfolderBase]: 83744/117939 cut-off events. [2023-08-25 22:20:27,128 INFO L125 PetriNetUnfolderBase]: For 338138/338138 co-relation queries the response was YES. [2023-08-25 22:20:27,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437268 conditions, 117939 events. 83744/117939 cut-off events. For 338138/338138 co-relation queries the response was YES. Maximal size of possible extension queue 7940. Compared 919910 event pairs, 30074 based on Foata normal form. 0/107362 useless extension candidates. Maximal degree in co-relation 437254. Up to 82253 conditions per place. [2023-08-25 22:20:27,959 INFO L140 encePairwiseOnDemand]: 205/213 looper letters, 80 selfloop transitions, 65 changer transitions 0/148 dead transitions. [2023-08-25 22:20:27,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 148 transitions, 1629 flow [2023-08-25 22:20:27,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:20:27,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:20:27,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2023-08-25 22:20:27,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41001564945226915 [2023-08-25 22:20:27,961 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2023-08-25 22:20:27,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2023-08-25 22:20:27,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:20:27,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2023-08-25 22:20:27,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 22:20:27,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:20:27,962 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:20:27,962 INFO L175 Difference]: Start difference. First operand has 52 places, 87 transitions, 772 flow. Second operand 3 states and 262 transitions. [2023-08-25 22:20:27,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 148 transitions, 1629 flow [2023-08-25 22:20:28,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 148 transitions, 1613 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:20:28,079 INFO L231 Difference]: Finished difference. Result has 55 places, 136 transitions, 1638 flow [2023-08-25 22:20:28,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1638, PETRI_PLACES=55, PETRI_TRANSITIONS=136} [2023-08-25 22:20:28,080 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2023-08-25 22:20:28,080 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 136 transitions, 1638 flow [2023-08-25 22:20:28,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states 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 22:20:28,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:20:28,080 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:20:28,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-08-25 22:20:28,080 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 22:20:28,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:20:28,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1442484182, now seen corresponding path program 1 times [2023-08-25 22:20:28,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:20:28,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370784202] [2023-08-25 22:20:28,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:20:28,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:20:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:20:28,099 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-08-25 22:20:28,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:20:28,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370784202] [2023-08-25 22:20:28,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370784202] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:20:28,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:20:28,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:20:28,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667716609] [2023-08-25 22:20:28,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:20:28,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:20:28,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:20:28,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:20:28,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:20:28,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 213 [2023-08-25 22:20:28,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 136 transitions, 1638 flow. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 22:20:28,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:20:28,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 213 [2023-08-25 22:20:28,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:20:35,184 INFO L124 PetriNetUnfolderBase]: 67349/92869 cut-off events. [2023-08-25 22:20:35,184 INFO L125 PetriNetUnfolderBase]: For 378525/378525 co-relation queries the response was YES. [2023-08-25 22:20:35,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412576 conditions, 92869 events. 67349/92869 cut-off events. For 378525/378525 co-relation queries the response was YES. Maximal size of possible extension queue 6428. Compared 687227 event pairs, 15691 based on Foata normal form. 4796/92908 useless extension candidates. Maximal degree in co-relation 412561. Up to 70802 conditions per place. [2023-08-25 22:20:35,884 INFO L140 encePairwiseOnDemand]: 211/213 looper letters, 173 selfloop transitions, 16 changer transitions 2/194 dead transitions. [2023-08-25 22:20:35,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 194 transitions, 2657 flow [2023-08-25 22:20:35,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:20:35,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:20:35,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2023-08-25 22:20:35,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40688575899843504 [2023-08-25 22:20:35,885 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2023-08-25 22:20:35,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2023-08-25 22:20:35,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:20:35,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2023-08-25 22:20:35,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states 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 22:20:35,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:20:35,887 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:20:35,887 INFO L175 Difference]: Start difference. First operand has 55 places, 136 transitions, 1638 flow. Second operand 3 states and 260 transitions. [2023-08-25 22:20:35,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 194 transitions, 2657 flow [2023-08-25 22:20:36,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 194 transitions, 2527 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:20:36,582 INFO L231 Difference]: Finished difference. Result has 54 places, 134 transitions, 1534 flow [2023-08-25 22:20:36,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1534, PETRI_PLACES=54, PETRI_TRANSITIONS=134} [2023-08-25 22:20:36,582 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2023-08-25 22:20:36,582 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 134 transitions, 1534 flow [2023-08-25 22:20:36,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 22:20:36,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:20:36,582 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:20:36,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-08-25 22:20:36,582 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 22:20:36,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:20:36,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1185298180, now seen corresponding path program 1 times [2023-08-25 22:20:36,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:20:36,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059936947] [2023-08-25 22:20:36,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:20:36,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:20:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:20:36,596 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-08-25 22:20:36,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:20:36,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059936947] [2023-08-25 22:20:36,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059936947] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:20:36,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:20:36,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:20:36,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740889035] [2023-08-25 22:20:36,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:20:36,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:20:36,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:20:36,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:20:36,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:20:36,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 213 [2023-08-25 22:20:36,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 134 transitions, 1534 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 22:20:36,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:20:36,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 213 [2023-08-25 22:20:36,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:20:42,591 INFO L124 PetriNetUnfolderBase]: 53101/79979 cut-off events. [2023-08-25 22:20:42,592 INFO L125 PetriNetUnfolderBase]: For 334741/334741 co-relation queries the response was YES. [2023-08-25 22:20:42,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338344 conditions, 79979 events. 53101/79979 cut-off events. For 334741/334741 co-relation queries the response was YES. Maximal size of possible extension queue 5480. Compared 670274 event pairs, 23193 based on Foata normal form. 2048/81905 useless extension candidates. Maximal degree in co-relation 338329. Up to 65010 conditions per place. [2023-08-25 22:20:43,371 INFO L140 encePairwiseOnDemand]: 206/213 looper letters, 105 selfloop transitions, 111 changer transitions 1/220 dead transitions. [2023-08-25 22:20:43,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 220 transitions, 3046 flow [2023-08-25 22:20:43,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:20:43,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:20:43,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2023-08-25 22:20:43,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40219092331768386 [2023-08-25 22:20:43,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2023-08-25 22:20:43,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2023-08-25 22:20:43,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:20:43,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2023-08-25 22:20:43,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states 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 22:20:43,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:20:43,373 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:20:43,373 INFO L175 Difference]: Start difference. First operand has 54 places, 134 transitions, 1534 flow. Second operand 3 states and 257 transitions. [2023-08-25 22:20:43,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 220 transitions, 3046 flow [2023-08-25 22:20:43,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 220 transitions, 3014 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:20:43,641 INFO L231 Difference]: Finished difference. Result has 55 places, 213 transitions, 3041 flow [2023-08-25 22:20:43,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=1518, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3041, PETRI_PLACES=55, PETRI_TRANSITIONS=213} [2023-08-25 22:20:43,642 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2023-08-25 22:20:43,642 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 213 transitions, 3041 flow [2023-08-25 22:20:43,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 22:20:43,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:20:43,642 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:20:43,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-08-25 22:20:43,642 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 22:20:43,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:20:43,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1910455760, now seen corresponding path program 1 times [2023-08-25 22:20:43,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:20:43,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85260980] [2023-08-25 22:20:43,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:20:43,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:20:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:20:43,663 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-08-25 22:20:43,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:20:43,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85260980] [2023-08-25 22:20:43,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85260980] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:20:43,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:20:43,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:20:43,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246126944] [2023-08-25 22:20:43,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:20:43,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:20:43,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:20:43,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:20:43,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:20:43,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 213 [2023-08-25 22:20:43,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 213 transitions, 3041 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states 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 22:20:43,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:20:43,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 213 [2023-08-25 22:20:43,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:20:48,725 INFO L124 PetriNetUnfolderBase]: 39848/62604 cut-off events. [2023-08-25 22:20:48,725 INFO L125 PetriNetUnfolderBase]: For 369027/369027 co-relation queries the response was YES. [2023-08-25 22:20:48,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293785 conditions, 62604 events. 39848/62604 cut-off events. For 369027/369027 co-relation queries the response was YES. Maximal size of possible extension queue 4143. Compared 545479 event pairs, 13951 based on Foata normal form. 4122/66604 useless extension candidates. Maximal degree in co-relation 293769. Up to 31846 conditions per place. [2023-08-25 22:20:48,993 INFO L140 encePairwiseOnDemand]: 211/213 looper letters, 0 selfloop transitions, 0 changer transitions 298/298 dead transitions. [2023-08-25 22:20:48,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 298 transitions, 4794 flow [2023-08-25 22:20:48,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:20:48,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:20:48,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2023-08-25 22:20:48,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40062597809076683 [2023-08-25 22:20:48,994 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 256 transitions. [2023-08-25 22:20:48,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 256 transitions. [2023-08-25 22:20:48,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:20:48,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 256 transitions. [2023-08-25 22:20:48,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 22:20:48,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:20:48,995 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 22:20:48,995 INFO L175 Difference]: Start difference. First operand has 55 places, 213 transitions, 3041 flow. Second operand 3 states and 256 transitions. [2023-08-25 22:20:48,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 298 transitions, 4794 flow [2023-08-25 22:20:49,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 298 transitions, 4683 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:20:49,520 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2023-08-25 22:20:49,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=2926, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2023-08-25 22:20:49,520 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2023-08-25 22:20:49,520 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2023-08-25 22:20:49,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states 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 22:20:49,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 22 remaining) [2023-08-25 22:20:49,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (20 of 22 remaining) [2023-08-25 22:20:49,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-25 22:20:49,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-25 22:20:49,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-25 22:20:49,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-08-25 22:20:49,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-25 22:20:49,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-25 22:20:49,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-25 22:20:49,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (12 of 22 remaining) [2023-08-25 22:20:49,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (11 of 22 remaining) [2023-08-25 22:20:49,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-25 22:20:49,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (9 of 22 remaining) [2023-08-25 22:20:49,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-08-25 22:20:49,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-08-25 22:20:49,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-08-25 22:20:49,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-08-25 22:20:49,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (4 of 22 remaining) [2023-08-25 22:20:49,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (3 of 22 remaining) [2023-08-25 22:20:49,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONASSERT (2 of 22 remaining) [2023-08-25 22:20:49,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-25 22:20:49,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-25 22:20:49,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-08-25 22:20:49,522 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:20:49,522 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 (1/2) [2023-08-25 22:20:49,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 117 transitions, 294 flow [2023-08-25 22:20:49,532 INFO L124 PetriNetUnfolderBase]: 7/187 cut-off events. [2023-08-25 22:20:49,532 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-25 22:20:49,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 187 events. 7/187 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 364 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 180. Up to 14 conditions per place. [2023-08-25 22:20:49,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 117 transitions, 294 flow [2023-08-25 22:20:49,533 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 110 transitions, 280 flow [2023-08-25 22:20:49,533 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 22:20:49,533 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 110 transitions, 280 flow [2023-08-25 22:20:49,533 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 110 transitions, 280 flow [2023-08-25 22:20:49,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 110 transitions, 280 flow [2023-08-25 22:20:49,540 INFO L124 PetriNetUnfolderBase]: 0/144 cut-off events. [2023-08-25 22:20:49,540 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-25 22:20:49,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 144 events. 0/144 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 200 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2023-08-25 22:20:49,542 INFO L119 LiptonReduction]: Number of co-enabled transitions 6552 [2023-08-25 22:20:50,789 INFO L134 LiptonReduction]: Checked pairs total: 11794 [2023-08-25 22:20:50,789 INFO L136 LiptonReduction]: Total number of compositions: 89 [2023-08-25 22:20:50,791 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 22:20:50,791 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;@698eb58, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 22:20:50,791 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-25 22:20:50,794 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 22:20:50,794 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2023-08-25 22:20:50,794 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-25 22:20:50,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:20:50,794 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:20:50,794 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 22:20:50,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:20:50,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1202598719, now seen corresponding path program 1 times [2023-08-25 22:20:50,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:20:50,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071603825] [2023-08-25 22:20:50,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:20:50,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:20:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:20:50,803 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 22:20:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 22:20:50,820 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 22:20:50,821 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 22:20:50,821 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-25 22:20:50,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-08-25 22:20:50,821 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 22:20:50,821 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-25 22:20:50,821 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 22:20:50,821 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-25 22:20:50,835 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 22:20:50,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 131 transitions, 339 flow [2023-08-25 22:20:50,847 INFO L124 PetriNetUnfolderBase]: 8/213 cut-off events. [2023-08-25 22:20:50,847 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-08-25 22:20:50,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 213 events. 8/213 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 464 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 213. Up to 16 conditions per place. [2023-08-25 22:20:50,848 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 131 transitions, 339 flow [2023-08-25 22:20:50,848 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 131 transitions, 339 flow [2023-08-25 22:20:50,848 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 22:20:50,848 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 131 transitions, 339 flow [2023-08-25 22:20:50,849 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 131 transitions, 339 flow [2023-08-25 22:20:50,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 131 transitions, 339 flow [2023-08-25 22:20:50,859 INFO L124 PetriNetUnfolderBase]: 8/213 cut-off events. [2023-08-25 22:20:50,859 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-08-25 22:20:50,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 213 events. 8/213 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 464 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 213. Up to 16 conditions per place. [2023-08-25 22:20:50,864 INFO L119 LiptonReduction]: Number of co-enabled transitions 10010 [2023-08-25 22:20:52,398 INFO L134 LiptonReduction]: Checked pairs total: 23308 [2023-08-25 22:20:52,398 INFO L136 LiptonReduction]: Total number of compositions: 102 [2023-08-25 22:20:52,399 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 22:20:52,399 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;@698eb58, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 22:20:52,399 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-25 22:20:52,399 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 22:20:52,399 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 22:20:52,399 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 22:20:52,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:20:52,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 22:20:52,400 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-25 22:20:52,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:20:52,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1746, now seen corresponding path program 1 times [2023-08-25 22:20:52,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:20:52,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431009309] [2023-08-25 22:20:52,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:20:52,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:20:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:20:52,403 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 22:20:52,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:20:52,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431009309] [2023-08-25 22:20:52,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431009309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:20:52,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:20:52,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 22:20:52,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504756467] [2023-08-25 22:20:52,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:20:52,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 22:20:52,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:20:52,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 22:20:52,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 22:20:52,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 233 [2023-08-25 22:20:52,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 49 transitions, 175 flow. Second operand has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 22:20:52,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:20:52,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 233 [2023-08-25 22:20:52,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:21:07,419 INFO L124 PetriNetUnfolderBase]: 202071/260779 cut-off events. [2023-08-25 22:21:07,419 INFO L125 PetriNetUnfolderBase]: For 217694/217694 co-relation queries the response was YES. [2023-08-25 22:21:08,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577091 conditions, 260779 events. 202071/260779 cut-off events. For 217694/217694 co-relation queries the response was YES. Maximal size of possible extension queue 10338. Compared 1659216 event pairs, 202071 based on Foata normal form. 0/182498 useless extension candidates. Maximal degree in co-relation 127887. Up to 245762 conditions per place. [2023-08-25 22:21:09,054 INFO L140 encePairwiseOnDemand]: 217/233 looper letters, 30 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2023-08-25 22:21:09,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 33 transitions, 203 flow [2023-08-25 22:21:09,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 22:21:09,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 22:21:09,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 220 transitions. [2023-08-25 22:21:09,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4721030042918455 [2023-08-25 22:21:09,055 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 220 transitions. [2023-08-25 22:21:09,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 220 transitions. [2023-08-25 22:21:09,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:21:09,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 220 transitions. [2023-08-25 22:21:09,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 110.0) internal successors, (220), 2 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 22:21:09,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states 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 22:21:09,056 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states 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 22:21:09,056 INFO L175 Difference]: Start difference. First operand has 64 places, 49 transitions, 175 flow. Second operand 2 states and 220 transitions. [2023-08-25 22:21:09,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 33 transitions, 203 flow [2023-08-25 22:21:09,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 33 transitions, 161 flow, removed 21 selfloop flow, removed 0 redundant places. [2023-08-25 22:21:09,386 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 101 flow [2023-08-25 22:21:09,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=101, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2023-08-25 22:21:09,386 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -15 predicate places. [2023-08-25 22:21:09,386 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 101 flow [2023-08-25 22:21:09,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 22:21:09,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:21:09,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-25 22:21:09,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-08-25 22:21:09,387 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-25 22:21:09,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:21:09,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1664980329, now seen corresponding path program 1 times [2023-08-25 22:21:09,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:21:09,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529437243] [2023-08-25 22:21:09,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:21:09,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:21:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:21:09,397 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 22:21:09,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:21:09,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529437243] [2023-08-25 22:21:09,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529437243] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:21:09,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:21:09,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:21:09,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105851371] [2023-08-25 22:21:09,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:21:09,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:21:09,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:21:09,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:21:09,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:21:09,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 233 [2023-08-25 22:21:09,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states 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 22:21:09,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:21:09,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 233 [2023-08-25 22:21:09,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:21:30,383 INFO L124 PetriNetUnfolderBase]: 297494/377965 cut-off events. [2023-08-25 22:21:30,383 INFO L125 PetriNetUnfolderBase]: For 21816/21816 co-relation queries the response was YES. [2023-08-25 22:21:31,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 769572 conditions, 377965 events. 297494/377965 cut-off events. For 21816/21816 co-relation queries the response was YES. Maximal size of possible extension queue 16101. Compared 2469583 event pairs, 176580 based on Foata normal form. 0/268752 useless extension candidates. Maximal degree in co-relation 769562. Up to 254687 conditions per place. [2023-08-25 22:21:32,897 INFO L140 encePairwiseOnDemand]: 224/233 looper letters, 48 selfloop transitions, 8 changer transitions 0/59 dead transitions. [2023-08-25 22:21:32,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 59 transitions, 295 flow [2023-08-25 22:21:32,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:21:32,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:21:32,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2023-08-25 22:21:32,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43776824034334766 [2023-08-25 22:21:32,898 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2023-08-25 22:21:32,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2023-08-25 22:21:32,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:21:32,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2023-08-25 22:21:32,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 22:21:32,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 22:21:32,899 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 22:21:32,899 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 101 flow. Second operand 3 states and 306 transitions. [2023-08-25 22:21:32,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 59 transitions, 295 flow [2023-08-25 22:21:32,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 295 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 22:21:32,937 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 163 flow [2023-08-25 22:21:32,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2023-08-25 22:21:32,938 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -11 predicate places. [2023-08-25 22:21:32,938 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 163 flow [2023-08-25 22:21:32,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states 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 22:21:32,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:21:32,938 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:21:32,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-08-25 22:21:32,938 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-25 22:21:32,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:21:32,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1721833793, now seen corresponding path program 1 times [2023-08-25 22:21:32,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:21:32,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193788696] [2023-08-25 22:21:32,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:21:32,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:21:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:21:32,958 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 22:21:32,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:21:32,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193788696] [2023-08-25 22:21:32,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193788696] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:21:32,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:21:32,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:21:32,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700207542] [2023-08-25 22:21:32,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:21:32,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:21:32,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:21:32,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:21:32,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:21:32,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 233 [2023-08-25 22:21:32,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states 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 22:21:32,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:21:32,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 233 [2023-08-25 22:21:32,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:22:07,927 INFO L124 PetriNetUnfolderBase]: 423576/541309 cut-off events. [2023-08-25 22:22:07,928 INFO L125 PetriNetUnfolderBase]: For 286495/286495 co-relation queries the response was YES. [2023-08-25 22:22:09,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1365245 conditions, 541309 events. 423576/541309 cut-off events. For 286495/286495 co-relation queries the response was YES. Maximal size of possible extension queue 23989. Compared 3741365 event pairs, 215810 based on Foata normal form. 0/412773 useless extension candidates. Maximal degree in co-relation 1365233. Up to 370121 conditions per place. [2023-08-25 22:22:12,325 INFO L140 encePairwiseOnDemand]: 224/233 looper letters, 54 selfloop transitions, 14 changer transitions 0/71 dead transitions. [2023-08-25 22:22:12,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 71 transitions, 428 flow [2023-08-25 22:22:12,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:22:12,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:22:12,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2023-08-25 22:22:12,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363376251788269 [2023-08-25 22:22:12,327 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2023-08-25 22:22:12,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2023-08-25 22:22:12,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:22:12,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2023-08-25 22:22:12,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:22:12,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 22:22:12,328 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 22:22:12,328 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 163 flow. Second operand 3 states and 305 transitions. [2023-08-25 22:22:12,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 71 transitions, 428 flow [2023-08-25 22:22:56,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 71 transitions, 398 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:22:56,757 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 275 flow [2023-08-25 22:22:56,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2023-08-25 22:22:56,758 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -9 predicate places. [2023-08-25 22:22:56,758 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 275 flow [2023-08-25 22:22:56,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states 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 22:22:56,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:22:56,758 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:22:56,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-08-25 22:22:56,758 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-25 22:22:56,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:22:56,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1840124577, now seen corresponding path program 1 times [2023-08-25 22:22:56,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:22:56,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114948209] [2023-08-25 22:22:56,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:22:56,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:22:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:22:56,784 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 22:22:56,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:22:56,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114948209] [2023-08-25 22:22:56,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114948209] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:22:56,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:22:56,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:22:56,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704730264] [2023-08-25 22:22:56,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:22:56,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:22:56,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:22:56,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:22:56,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:22:56,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 233 [2023-08-25 22:22:56,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 22:22:56,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:22:56,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 233 [2023-08-25 22:22:56,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:23:23,225 INFO L124 PetriNetUnfolderBase]: 345272/429917 cut-off events. [2023-08-25 22:23:23,225 INFO L125 PetriNetUnfolderBase]: For 362722/362722 co-relation queries the response was YES. [2023-08-25 22:23:24,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1258872 conditions, 429917 events. 345272/429917 cut-off events. For 362722/362722 co-relation queries the response was YES. Maximal size of possible extension queue 19479. Compared 2770801 event pairs, 66448 based on Foata normal form. 0/334134 useless extension candidates. Maximal degree in co-relation 1258859. Up to 345956 conditions per place. [2023-08-25 22:23:26,664 INFO L140 encePairwiseOnDemand]: 231/233 looper letters, 77 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2023-08-25 22:23:26,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 82 transitions, 585 flow [2023-08-25 22:23:26,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:23:26,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:23:26,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2023-08-25 22:23:26,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43490701001430615 [2023-08-25 22:23:26,665 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2023-08-25 22:23:26,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2023-08-25 22:23:26,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:23:26,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2023-08-25 22:23:26,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 22:23:26,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 22:23:26,666 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 22:23:26,666 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 275 flow. Second operand 3 states and 304 transitions. [2023-08-25 22:23:26,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 82 transitions, 585 flow [2023-08-25 22:23:56,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 82 transitions, 543 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:23:56,947 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 247 flow [2023-08-25 22:23:56,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-08-25 22:23:56,948 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -10 predicate places. [2023-08-25 22:23:56,948 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 247 flow [2023-08-25 22:23:56,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 22:23:56,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:23:56,948 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:23:56,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-08-25 22:23:56,948 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-25 22:23:56,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:23:56,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1837245310, now seen corresponding path program 1 times [2023-08-25 22:23:56,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:23:56,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176424313] [2023-08-25 22:23:56,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:23:56,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:23:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:23:56,983 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 22:23:56,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:23:56,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176424313] [2023-08-25 22:23:56,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176424313] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:23:56,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:23:56,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:23:56,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877768833] [2023-08-25 22:23:56,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:23:56,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:23:56,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:23:56,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:23:56,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:23:56,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 233 [2023-08-25 22:23:56,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 247 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 22:23:56,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:23:56,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 233 [2023-08-25 22:23:56,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:24:19,712 INFO L124 PetriNetUnfolderBase]: 280909/351017 cut-off events. [2023-08-25 22:24:19,712 INFO L125 PetriNetUnfolderBase]: For 239234/239234 co-relation queries the response was YES. [2023-08-25 22:24:21,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992746 conditions, 351017 events. 280909/351017 cut-off events. For 239234/239234 co-relation queries the response was YES. Maximal size of possible extension queue 16167. Compared 2222759 event pairs, 48119 based on Foata normal form. 0/273859 useless extension candidates. Maximal degree in co-relation 992733. Up to 281912 conditions per place. [2023-08-25 22:24:22,508 INFO L140 encePairwiseOnDemand]: 231/233 looper letters, 74 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-08-25 22:24:22,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 79 transitions, 528 flow [2023-08-25 22:24:22,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:24:22,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:24:22,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2023-08-25 22:24:22,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43061516452074394 [2023-08-25 22:24:22,509 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2023-08-25 22:24:22,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2023-08-25 22:24:22,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:24:22,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2023-08-25 22:24:22,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 22:24:22,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 22:24:22,510 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 22:24:22,510 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 247 flow. Second operand 3 states and 301 transitions. [2023-08-25 22:24:22,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 79 transitions, 528 flow [2023-08-25 22:24:22,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 79 transitions, 525 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:24:22,555 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 245 flow [2023-08-25 22:24:22,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=52, 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=245, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2023-08-25 22:24:22,556 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -10 predicate places. [2023-08-25 22:24:22,556 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 245 flow [2023-08-25 22:24:22,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 22:24:22,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:24:22,556 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-25 22:24:22,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-08-25 22:24:22,556 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-25 22:24:22,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:24:22,556 INFO L85 PathProgramCache]: Analyzing trace with hash 988045030, now seen corresponding path program 1 times [2023-08-25 22:24:22,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:24:22,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28297669] [2023-08-25 22:24:22,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:24:22,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:24:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:24:22,567 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 22:24:22,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:24:22,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28297669] [2023-08-25 22:24:22,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28297669] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:24:22,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:24:22,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:24:22,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258050161] [2023-08-25 22:24:22,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:24:22,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:24:22,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:24:22,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:24:22,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:24:22,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 233 [2023-08-25 22:24:22,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 245 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 22:24:22,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:24:22,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 233 [2023-08-25 22:24:22,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:24:55,904 INFO L124 PetriNetUnfolderBase]: 385656/500287 cut-off events. [2023-08-25 22:24:55,904 INFO L125 PetriNetUnfolderBase]: For 463772/463772 co-relation queries the response was YES. [2023-08-25 22:24:57,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1404946 conditions, 500287 events. 385656/500287 cut-off events. For 463772/463772 co-relation queries the response was YES. Maximal size of possible extension queue 23419. Compared 3595250 event pairs, 176836 based on Foata normal form. 0/398586 useless extension candidates. Maximal degree in co-relation 1404933. Up to 349769 conditions per place. [2023-08-25 22:25:00,361 INFO L140 encePairwiseOnDemand]: 224/233 looper letters, 60 selfloop transitions, 25 changer transitions 0/88 dead transitions. [2023-08-25 22:25:00,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 88 transitions, 605 flow [2023-08-25 22:25:00,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:25:00,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:25:00,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2023-08-25 22:25:00,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4291845493562232 [2023-08-25 22:25:00,363 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2023-08-25 22:25:00,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2023-08-25 22:25:00,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:25:00,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2023-08-25 22:25:00,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states 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 22:25:00,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 22:25:00,364 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 22:25:00,364 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 245 flow. Second operand 3 states and 300 transitions. [2023-08-25 22:25:00,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 88 transitions, 605 flow [2023-08-25 22:25:01,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 88 transitions, 601 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:25:01,365 INFO L231 Difference]: Finished difference. Result has 57 places, 71 transitions, 513 flow [2023-08-25 22:25:01,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=513, PETRI_PLACES=57, PETRI_TRANSITIONS=71} [2023-08-25 22:25:01,365 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -7 predicate places. [2023-08-25 22:25:01,365 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 71 transitions, 513 flow [2023-08-25 22:25:01,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 22:25:01,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:25:01,365 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:25:01,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-08-25 22:25:01,365 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-25 22:25:01,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:25:01,366 INFO L85 PathProgramCache]: Analyzing trace with hash 564630917, now seen corresponding path program 1 times [2023-08-25 22:25:01,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:25:01,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232464186] [2023-08-25 22:25:01,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:25:01,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:25:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:25:01,402 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 22:25:01,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:25:01,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232464186] [2023-08-25 22:25:01,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232464186] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:25:01,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:25:01,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:25:01,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785710576] [2023-08-25 22:25:01,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:25:01,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:25:01,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:25:01,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:25:01,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:25:01,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 233 [2023-08-25 22:25:01,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 71 transitions, 513 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 22:25:01,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:25:01,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 233 [2023-08-25 22:25:01,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:25:29,992 INFO L124 PetriNetUnfolderBase]: 311645/393393 cut-off events. [2023-08-25 22:25:29,992 INFO L125 PetriNetUnfolderBase]: For 652015/652015 co-relation queries the response was YES. [2023-08-25 22:25:31,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1350529 conditions, 393393 events. 311645/393393 cut-off events. For 652015/652015 co-relation queries the response was YES. Maximal size of possible extension queue 19046. Compared 2623499 event pairs, 55633 based on Foata normal form. 16278/339366 useless extension candidates. Maximal degree in co-relation 1350515. Up to 313668 conditions per place. [2023-08-25 22:25:33,697 INFO L140 encePairwiseOnDemand]: 231/233 looper letters, 100 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2023-08-25 22:25:33,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 107 transitions, 943 flow [2023-08-25 22:25:33,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:25:33,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:25:33,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2023-08-25 22:25:33,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263233190271817 [2023-08-25 22:25:33,712 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2023-08-25 22:25:33,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2023-08-25 22:25:33,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:25:33,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2023-08-25 22:25:33,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 22:25:33,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 22:25:33,713 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 22:25:33,713 INFO L175 Difference]: Start difference. First operand has 57 places, 71 transitions, 513 flow. Second operand 3 states and 298 transitions. [2023-08-25 22:25:33,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 107 transitions, 943 flow [2023-08-25 22:25:43,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 107 transitions, 893 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:25:43,454 INFO L231 Difference]: Finished difference. Result has 56 places, 70 transitions, 467 flow [2023-08-25 22:25:43,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=467, PETRI_PLACES=56, PETRI_TRANSITIONS=70} [2023-08-25 22:25:43,454 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -8 predicate places. [2023-08-25 22:25:43,454 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 70 transitions, 467 flow [2023-08-25 22:25:43,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 22:25:43,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:25:43,454 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:25:43,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-08-25 22:25:43,455 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-25 22:25:43,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:25:43,455 INFO L85 PathProgramCache]: Analyzing trace with hash 639197893, now seen corresponding path program 1 times [2023-08-25 22:25:43,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:25:43,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557453138] [2023-08-25 22:25:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:25:43,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:25:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:25:43,491 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-25 22:25:43,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:25:43,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557453138] [2023-08-25 22:25:43,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557453138] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:25:43,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:25:43,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:25:43,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505284230] [2023-08-25 22:25:43,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:25:43,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:25:43,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:25:43,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:25:43,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:25:43,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 233 [2023-08-25 22:25:43,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 70 transitions, 467 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states 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 22:25:43,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:25:43,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 233 [2023-08-25 22:25:43,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:26:22,774 INFO L124 PetriNetUnfolderBase]: 417794/548677 cut-off events. [2023-08-25 22:26:22,774 INFO L125 PetriNetUnfolderBase]: For 983585/983585 co-relation queries the response was YES. [2023-08-25 22:26:25,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1767728 conditions, 548677 events. 417794/548677 cut-off events. For 983585/983585 co-relation queries the response was YES. Maximal size of possible extension queue 26916. Compared 4122409 event pairs, 172730 based on Foata normal form. 0/458425 useless extension candidates. Maximal degree in co-relation 1767714. Up to 387351 conditions per place. [2023-08-25 22:26:27,739 INFO L140 encePairwiseOnDemand]: 224/233 looper letters, 75 selfloop transitions, 45 changer transitions 0/123 dead transitions. [2023-08-25 22:26:27,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 123 transitions, 1072 flow [2023-08-25 22:26:27,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:26:27,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:26:27,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-25 22:26:27,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4248927038626609 [2023-08-25 22:26:27,740 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-25 22:26:27,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-25 22:26:27,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:26:27,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-25 22:26:27,741 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 22:26:27,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 22:26:27,742 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 22:26:27,742 INFO L175 Difference]: Start difference. First operand has 56 places, 70 transitions, 467 flow. Second operand 3 states and 297 transitions. [2023-08-25 22:26:27,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 123 transitions, 1072 flow [2023-08-25 22:26:28,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 123 transitions, 1064 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:26:28,286 INFO L231 Difference]: Finished difference. Result has 59 places, 107 transitions, 1021 flow [2023-08-25 22:26:28,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1021, PETRI_PLACES=59, PETRI_TRANSITIONS=107} [2023-08-25 22:26:28,286 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -5 predicate places. [2023-08-25 22:26:28,286 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 107 transitions, 1021 flow [2023-08-25 22:26:28,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states 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 22:26:28,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:26:28,287 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:26:28,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-08-25 22:26:28,287 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-25 22:26:28,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:26:28,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1659695689, now seen corresponding path program 1 times [2023-08-25 22:26:28,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:26:28,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490902620] [2023-08-25 22:26:28,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:26:28,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:26:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:26:28,317 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-25 22:26:28,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:26:28,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490902620] [2023-08-25 22:26:28,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490902620] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:26:28,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:26:28,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:26:28,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050961281] [2023-08-25 22:26:28,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:26:28,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:26:28,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:26:28,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:26:28,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:26:28,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 233 [2023-08-25 22:26:28,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 107 transitions, 1021 flow. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 22:26:28,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:26:28,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 233 [2023-08-25 22:26:28,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:27:00,481 INFO L124 PetriNetUnfolderBase]: 335923/429061 cut-off events. [2023-08-25 22:27:00,482 INFO L125 PetriNetUnfolderBase]: For 1173031/1173031 co-relation queries the response was YES. [2023-08-25 22:27:02,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1670368 conditions, 429061 events. 335923/429061 cut-off events. For 1173031/1173031 co-relation queries the response was YES. Maximal size of possible extension queue 21877. Compared 3003233 event pairs, 64967 based on Foata normal form. 18824/389225 useless extension candidates. Maximal degree in co-relation 1670353. Up to 340086 conditions per place. [2023-08-25 22:27:04,744 INFO L140 encePairwiseOnDemand]: 231/233 looper letters, 147 selfloop transitions, 8 changer transitions 0/158 dead transitions. [2023-08-25 22:27:04,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 158 transitions, 1758 flow [2023-08-25 22:27:04,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:27:04,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:27:04,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2023-08-25 22:27:04,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4220314735336195 [2023-08-25 22:27:04,745 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2023-08-25 22:27:04,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2023-08-25 22:27:04,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:27:04,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2023-08-25 22:27:04,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states 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 22:27:04,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 22:27:04,746 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 22:27:04,746 INFO L175 Difference]: Start difference. First operand has 59 places, 107 transitions, 1021 flow. Second operand 3 states and 295 transitions. [2023-08-25 22:27:04,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 158 transitions, 1758 flow [2023-08-25 22:27:15,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 158 transitions, 1668 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:27:15,390 INFO L231 Difference]: Finished difference. Result has 58 places, 106 transitions, 943 flow [2023-08-25 22:27:15,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=943, PETRI_PLACES=58, PETRI_TRANSITIONS=106} [2023-08-25 22:27:15,391 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -6 predicate places. [2023-08-25 22:27:15,391 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 106 transitions, 943 flow [2023-08-25 22:27:15,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 22:27:15,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:27:15,391 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:27:15,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-08-25 22:27:15,391 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-25 22:27:15,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:27:15,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1651877664, now seen corresponding path program 1 times [2023-08-25 22:27:15,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:27:15,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310103005] [2023-08-25 22:27:15,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:27:15,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:27:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:27:15,404 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-08-25 22:27:15,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:27:15,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310103005] [2023-08-25 22:27:15,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310103005] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:27:15,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:27:15,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:27:15,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388790843] [2023-08-25 22:27:15,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:27:15,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:27:15,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:27:15,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:27:15,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:27:15,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 233 [2023-08-25 22:27:15,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 106 transitions, 943 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states 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 22:27:15,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:27:15,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 233 [2023-08-25 22:27:15,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:28:03,931 INFO L124 PetriNetUnfolderBase]: 439672/585215 cut-off events. [2023-08-25 22:28:03,932 INFO L125 PetriNetUnfolderBase]: For 1746645/1746645 co-relation queries the response was YES. [2023-08-25 22:28:06,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2143906 conditions, 585215 events. 439672/585215 cut-off events. For 1746645/1746645 co-relation queries the response was YES. Maximal size of possible extension queue 30348. Compared 4591334 event pairs, 165426 based on Foata normal form. 0/513184 useless extension candidates. Maximal degree in co-relation 2143891. Up to 416353 conditions per place. [2023-08-25 22:28:09,617 INFO L140 encePairwiseOnDemand]: 224/233 looper letters, 102 selfloop transitions, 81 changer transitions 0/186 dead transitions. [2023-08-25 22:28:09,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 186 transitions, 2047 flow [2023-08-25 22:28:09,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:28:09,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:28:09,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2023-08-25 22:28:09,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4206008583690987 [2023-08-25 22:28:09,618 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2023-08-25 22:28:09,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2023-08-25 22:28:09,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:28:09,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2023-08-25 22:28:09,619 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 22:28:09,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 22:28:09,619 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 22:28:09,619 INFO L175 Difference]: Start difference. First operand has 58 places, 106 transitions, 943 flow. Second operand 3 states and 294 transitions. [2023-08-25 22:28:09,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 186 transitions, 2047 flow [2023-08-25 22:28:11,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 186 transitions, 2031 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 22:28:11,564 INFO L231 Difference]: Finished difference. Result has 61 places, 171 transitions, 2065 flow [2023-08-25 22:28:11,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2065, PETRI_PLACES=61, PETRI_TRANSITIONS=171} [2023-08-25 22:28:11,564 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -3 predicate places. [2023-08-25 22:28:11,564 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 171 transitions, 2065 flow [2023-08-25 22:28:11,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states 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 22:28:11,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:28:11,564 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:28:11,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-08-25 22:28:11,577 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-25 22:28:11,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:28:11,577 INFO L85 PathProgramCache]: Analyzing trace with hash 331407321, now seen corresponding path program 1 times [2023-08-25 22:28:11,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:28:11,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459028766] [2023-08-25 22:28:11,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:28:11,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:28:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:28:11,613 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-08-25 22:28:11,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:28:11,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459028766] [2023-08-25 22:28:11,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459028766] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:28:11,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:28:11,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 22:28:11,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373936243] [2023-08-25 22:28:11,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:28:11,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 22:28:11,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:28:11,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 22:28:11,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 22:28:11,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 233 [2023-08-25 22:28:11,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 171 transitions, 2065 flow. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 22:28:11,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:28:11,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 233 [2023-08-25 22:28:11,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 22:28:52,904 INFO L124 PetriNetUnfolderBase]: 352515/456751 cut-off events. [2023-08-25 22:28:52,905 INFO L125 PetriNetUnfolderBase]: For 1894027/1894027 co-relation queries the response was YES. [2023-08-25 22:28:54,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2002635 conditions, 456751 events. 352515/456751 cut-off events. For 1894027/1894027 co-relation queries the response was YES. Maximal size of possible extension queue 24658. Compared 3352840 event pairs, 75003 based on Foata normal form. 21018/435878 useless extension candidates. Maximal degree in co-relation 2002619. Up to 358436 conditions per place. [2023-08-25 22:28:57,101 INFO L140 encePairwiseOnDemand]: 231/233 looper letters, 230 selfloop transitions, 16 changer transitions 0/249 dead transitions. [2023-08-25 22:28:57,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 249 transitions, 3409 flow [2023-08-25 22:28:57,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 22:28:57,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 22:28:57,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2023-08-25 22:28:57,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4177396280400572 [2023-08-25 22:28:57,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2023-08-25 22:28:57,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2023-08-25 22:28:57,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 22:28:57,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2023-08-25 22:28:57,102 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 22:28:57,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 22:28:57,103 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 22:28:57,103 INFO L175 Difference]: Start difference. First operand has 61 places, 171 transitions, 2065 flow. Second operand 3 states and 292 transitions. [2023-08-25 22:28:57,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 249 transitions, 3409 flow [2023-08-25 22:29:12,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 249 transitions, 3247 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 22:29:12,262 INFO L231 Difference]: Finished difference. Result has 60 places, 170 transitions, 1931 flow [2023-08-25 22:29:12,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=1899, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1931, PETRI_PLACES=60, PETRI_TRANSITIONS=170} [2023-08-25 22:29:12,262 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -4 predicate places. [2023-08-25 22:29:12,262 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 170 transitions, 1931 flow [2023-08-25 22:29:12,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 22:29:12,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 22:29:12,263 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:29:12,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-08-25 22:29:12,263 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONASSERT (and 21 more)] === [2023-08-25 22:29:12,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 22:29:12,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1872346005, now seen corresponding path program 1 times [2023-08-25 22:29:12,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 22:29:12,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444798846] [2023-08-25 22:29:12,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 22:29:12,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 22:29:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 22:29:12,286 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-08-25 22:29:12,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 22:29:12,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444798846] [2023-08-25 22:29:12,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444798846] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 22:29:12,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 22:29:12,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 22:29:12,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914528677] [2023-08-25 22:29:12,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 22:29:12,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 22:29:12,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 22:29:12,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 22:29:12,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 22:29:12,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 233 [2023-08-25 22:29:12,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 170 transitions, 1931 flow. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 22:29:12,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 22:29:12,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 233 [2023-08-25 22:29:12,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-25 22:30:05,273 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 22:30:06,284 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 [2023-08-25 22:30:08,149 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err2ASSERT_VIOLATIONASSERT (24 of 25 remaining) [2023-08-25 22:30:08,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-08-25 22:30:08,149 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-25 22:30:08,150 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2023-08-25 22:30:08,150 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err2ASSERT_VIOLATIONASSERT (22 of 25 remaining) [2023-08-25 22:30:08,150 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2023-08-25 22:30:08,150 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err1ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2023-08-25 22:30:08,150 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err2ASSERT_VIOLATIONASSERT (19 of 25 remaining) [2023-08-25 22:30:08,150 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2023-08-25 22:30:08,150 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err2ASSERT_VIOLATIONASSERT (17 of 25 remaining) [2023-08-25 22:30:08,150 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2023-08-25 22:30:08,150 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err2ASSERT_VIOLATIONASSERT (15 of 25 remaining) [2023-08-25 22:30:08,150 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2023-08-25 22:30:08,150 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2023-08-25 22:30:08,150 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err2ASSERT_VIOLATIONASSERT (12 of 25 remaining) [2023-08-25 22:30:08,150 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2023-08-25 22:30:08,150 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err2ASSERT_VIOLATIONASSERT (10 of 25 remaining) [2023-08-25 22:30:08,150 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2023-08-25 22:30:08,150 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2023-08-25 22:30:08,151 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2023-08-25 22:30:08,151 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2023-08-25 22:30:08,151 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2023-08-25 22:30:08,151 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err2ASSERT_VIOLATIONASSERT (4 of 25 remaining) [2023-08-25 22:30:08,151 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2023-08-25 22:30:08,151 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2023-08-25 22:30:08,151 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2023-08-25 22:30:08,151 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2023-08-25 22:30:08,151 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 22:30:08,152 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT (1/2) [2023-08-25 22:30:08,153 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 7 thread instances [2023-08-25 22:30:08,153 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 22:30:08,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 10:30:08 BasicIcfg [2023-08-25 22:30:08,174 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 22:30:08,181 INFO L158 Benchmark]: Toolchain (without parser) took 680627.10ms. Allocated memory was 318.8MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 293.6MB in the beginning and 10.8GB in the end (delta: -10.5GB). Peak memory consumption was 8.7GB. Max. memory is 16.0GB. [2023-08-25 22:30:08,183 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 318.8MB. Free memory is still 295.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 22:30:08,183 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.48ms. Allocated memory is still 318.8MB. Free memory was 293.0MB in the beginning and 274.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-25 22:30:08,183 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.35ms. Allocated memory is still 318.8MB. Free memory was 273.3MB in the beginning and 272.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 22:30:08,183 INFO L158 Benchmark]: Boogie Preprocessor took 25.61ms. Allocated memory is still 318.8MB. Free memory was 272.1MB in the beginning and 270.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 22:30:08,183 INFO L158 Benchmark]: RCFGBuilder took 260.76ms. Allocated memory is still 318.8MB. Free memory was 270.3MB in the beginning and 256.5MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-25 22:30:08,184 INFO L158 Benchmark]: TraceAbstraction took 679966.09ms. Allocated memory was 318.8MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 255.7MB in the beginning and 10.8GB in the end (delta: -10.6GB). Peak memory consumption was 8.7GB. Max. memory is 16.0GB. [2023-08-25 22:30:08,186 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 318.8MB. Free memory is still 295.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 333.48ms. Allocated memory is still 318.8MB. Free memory was 293.0MB in the beginning and 274.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 37.35ms. Allocated memory is still 318.8MB. Free memory was 273.3MB in the beginning and 272.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 25.61ms. Allocated memory is still 318.8MB. Free memory was 272.1MB in the beginning and 270.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 260.76ms. Allocated memory is still 318.8MB. Free memory was 270.3MB in the beginning and 256.5MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 679966.09ms. Allocated memory was 318.8MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 255.7MB in the beginning and 10.8GB in the end (delta: -10.6GB). Peak memory consumption was 8.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 266]: Unsoundness Warning unspecified type, defaulting to int C: short [266] - GenericResultAtLocation [Line: 266]: Unsoundness Warning unspecified type, defaulting to int C: short [266] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.0s, 49 PlacesBefore, 14 PlacesAfterwards, 47 TransitionsBefore, 11 TransitionsAfterwards, 338 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 50 TotalNumberOfCompositions, 353 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 353, independent: 353, independent conditional: 0, independent unconditional: 353, 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: 178, independent: 178, independent conditional: 0, independent unconditional: 178, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 353, independent: 175, independent conditional: 0, independent unconditional: 175, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 178, unknown conditional: 0, unknown unconditional: 178] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, 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: 0.9s, 43 PlacesBefore, 11 PlacesAfterwards, 40 TransitionsBefore, 8 TransitionsAfterwards, 182 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 46 TotalNumberOfCompositions, 221 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 221, independent: 221, independent conditional: 0, independent unconditional: 221, 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: 114, independent: 114, independent conditional: 0, independent unconditional: 114, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 221, independent: 107, independent conditional: 0, independent unconditional: 107, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 114, unknown conditional: 0, unknown unconditional: 114] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, 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: 0.9s, 65 PlacesBefore, 24 PlacesAfterwards, 61 TransitionsBefore, 19 TransitionsAfterwards, 1040 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 51 TotalNumberOfCompositions, 1552 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 987, independent: 936, independent conditional: 0, independent unconditional: 936, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 509, independent: 495, independent conditional: 0, independent unconditional: 495, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 987, independent: 441, independent conditional: 0, independent unconditional: 441, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 509, unknown conditional: 0, unknown unconditional: 509] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9s, 59 PlacesBefore, 21 PlacesAfterwards, 54 TransitionsBefore, 16 TransitionsAfterwards, 728 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 46 TotalNumberOfCompositions, 1286 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 770, independent: 707, independent conditional: 0, independent unconditional: 707, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 372, independent: 355, independent conditional: 0, independent unconditional: 355, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 770, independent: 352, independent conditional: 0, independent unconditional: 352, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 372, unknown conditional: 0, unknown unconditional: 372] , Statistics on independence cache: Total cache size (in pairs): 31, Positive cache size: 23, Positive conditional cache size: 0, Positive unconditional cache size: 23, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.0s, 81 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 25 TransitionsAfterwards, 2106 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 4131 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2600, independent: 2495, independent conditional: 0, independent unconditional: 2495, dependent: 105, dependent conditional: 0, dependent unconditional: 105, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1065, independent: 1026, independent conditional: 0, independent unconditional: 1026, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2600, independent: 1469, independent conditional: 0, independent unconditional: 1469, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 1065, unknown conditional: 0, unknown unconditional: 1065] , Statistics on independence cache: Total cache size (in pairs): 104, Positive cache size: 90, Positive conditional cache size: 0, Positive unconditional cache size: 90, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.1s, 75 PlacesBefore, 29 PlacesAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1638 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 56 TotalNumberOfCompositions, 3473 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2078, independent: 1965, independent conditional: 0, independent unconditional: 1965, dependent: 113, dependent conditional: 0, dependent unconditional: 113, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 823, independent: 789, independent conditional: 0, independent unconditional: 789, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2078, independent: 1176, independent conditional: 0, independent unconditional: 1176, dependent: 79, dependent conditional: 0, dependent unconditional: 79, unknown: 823, unknown conditional: 0, unknown unconditional: 823] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 65, Positive conditional cache size: 0, Positive unconditional cache size: 65, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2s, 97 PlacesBefore, 40 PlacesAfterwards, 89 TransitionsBefore, 31 TransitionsAfterwards, 3536 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 71 TotalNumberOfCompositions, 6549 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3549, independent: 3431, independent conditional: 0, independent unconditional: 3431, dependent: 118, dependent conditional: 0, dependent unconditional: 118, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1667, independent: 1633, independent conditional: 0, independent unconditional: 1633, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3549, independent: 1798, independent conditional: 0, independent unconditional: 1798, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 1667, unknown conditional: 0, unknown unconditional: 1667] , Statistics on independence cache: Total cache size (in pairs): 111, Positive cache size: 93, Positive conditional cache size: 0, Positive unconditional cache size: 93, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2s, 91 PlacesBefore, 37 PlacesAfterwards, 82 TransitionsBefore, 28 TransitionsAfterwards, 2912 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 65 TotalNumberOfCompositions, 5572 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2894, independent: 2776, independent conditional: 0, independent unconditional: 2776, dependent: 118, dependent conditional: 0, dependent unconditional: 118, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1385, independent: 1348, independent conditional: 0, independent unconditional: 1348, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2894, independent: 1428, independent conditional: 0, independent unconditional: 1428, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 1385, unknown conditional: 0, unknown unconditional: 1385] , Statistics on independence cache: Total cache size (in pairs): 87, Positive cache size: 73, Positive conditional cache size: 0, Positive unconditional cache size: 73, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2s, 113 PlacesBefore, 48 PlacesAfterwards, 103 TransitionsBefore, 37 TransitionsAfterwards, 5330 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 85 TotalNumberOfCompositions, 9763 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5556, independent: 5418, independent conditional: 0, independent unconditional: 5418, dependent: 138, dependent conditional: 0, dependent unconditional: 138, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2547, independent: 2495, independent conditional: 0, independent unconditional: 2495, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5556, independent: 2923, independent conditional: 0, independent unconditional: 2923, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 2547, unknown conditional: 0, unknown unconditional: 2547] , Statistics on independence cache: Total cache size (in pairs): 176, Positive cache size: 151, Positive conditional cache size: 0, Positive unconditional cache size: 151, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 107 PlacesBefore, 45 PlacesAfterwards, 96 TransitionsBefore, 34 TransitionsAfterwards, 4550 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 80 TotalNumberOfCompositions, 10058 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4742, independent: 4558, independent conditional: 0, independent unconditional: 4558, dependent: 184, dependent conditional: 0, dependent unconditional: 184, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2140, independent: 2098, independent conditional: 0, independent unconditional: 2098, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4742, independent: 2460, independent conditional: 0, independent unconditional: 2460, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 2140, unknown conditional: 0, unknown unconditional: 2140] , Statistics on independence cache: Total cache size (in pairs): 126, Positive cache size: 108, Positive conditional cache size: 0, Positive unconditional cache size: 108, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 129 PlacesBefore, 56 PlacesAfterwards, 117 TransitionsBefore, 43 TransitionsAfterwards, 7488 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 70 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 96 TotalNumberOfCompositions, 15153 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8521, independent: 8322, independent conditional: 0, independent unconditional: 8322, dependent: 199, dependent conditional: 0, dependent unconditional: 199, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3483, independent: 3421, independent conditional: 0, independent unconditional: 3421, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8521, independent: 4901, independent conditional: 0, independent unconditional: 4901, dependent: 137, dependent conditional: 0, dependent unconditional: 137, unknown: 3483, unknown conditional: 0, unknown unconditional: 3483] , Statistics on independence cache: Total cache size (in pairs): 196, Positive cache size: 171, Positive conditional cache size: 0, Positive unconditional cache size: 171, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.3s, 123 PlacesBefore, 53 PlacesAfterwards, 110 TransitionsBefore, 40 TransitionsAfterwards, 6552 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 65 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 89 TotalNumberOfCompositions, 11794 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6482, independent: 6323, independent conditional: 0, independent unconditional: 6323, dependent: 159, dependent conditional: 0, dependent unconditional: 159, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3036, independent: 2973, independent conditional: 0, independent unconditional: 2973, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6482, independent: 3350, independent conditional: 0, independent unconditional: 3350, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 3036, unknown conditional: 0, unknown unconditional: 3036] , Statistics on independence cache: Total cache size (in pairs): 173, Positive cache size: 148, Positive conditional cache size: 0, Positive unconditional cache size: 148, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 145 PlacesBefore, 64 PlacesAfterwards, 131 TransitionsBefore, 49 TransitionsAfterwards, 10010 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 76 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 102 TotalNumberOfCompositions, 23308 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9487, independent: 9210, independent conditional: 0, independent unconditional: 9210, dependent: 277, dependent conditional: 0, dependent unconditional: 277, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4474, independent: 4415, independent conditional: 0, independent unconditional: 4415, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9487, independent: 4795, independent conditional: 0, independent unconditional: 4795, dependent: 218, dependent conditional: 0, dependent unconditional: 218, unknown: 4474, unknown conditional: 0, unknown unconditional: 4474] , Statistics on independence cache: Total cache size (in pairs): 189, Positive cache size: 163, Positive conditional cache size: 0, Positive unconditional cache size: 163, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 15]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 707]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 710]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 716]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 61 locations, 8 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: 1.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 NumberOfCodeBlocks, 1 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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, 75 locations, 11 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: 1.4s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 96 IncrementalHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 96 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=3, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 44 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 6/6 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, 89 locations, 14 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: 1.8s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 57 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 57 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 229 IncrementalHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 0 mSDtfsCounter, 229 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=6, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 85 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 22/22 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 4 thread instances CFG has 6 procedures, 103 locations, 17 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: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 105 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 105 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 403 IncrementalHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 0 mSDtfsCounter, 403 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=419occurred in iteration=8, InterpolantAutomatonStates: 26, 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, 0.1s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 124 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 58/58 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 5 thread instances CFG has 7 procedures, 117 locations, 20 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: 15.6s, OverallIterations: 11, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 167 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 167 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 626 IncrementalHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 0 mSDtfsCounter, 626 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1140occurred in iteration=10, InterpolantAutomatonStates: 32, 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, 0.1s InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 161 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 122/122 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 6 thread instances CFG has 8 procedures, 131 locations, 23 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: 91.9s, OverallIterations: 13, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 90.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 243 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 243 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 898 IncrementalHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 0 mSDtfsCounter, 898 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3041occurred in iteration=12, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 191 NumberOfCodeBlocks, 191 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 178 ConstructedInterpolants, 0 QuantifiedInterpolants, 216 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 222/222 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 7 thread instances CFG has 9 procedures, 145 locations, 26 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: 557.3s, OverallIterations: 12, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 555.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 280 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 280 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 995 IncrementalHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 0 mSDtfsCounter, 995 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2065occurred in iteration=10, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 165 NumberOfCodeBlocks, 165 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 153 ConstructedInterpolants, 0 QuantifiedInterpolants, 187 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 172/172 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, 61 locations, 8 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: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 4 NumberOfCodeBlocks, 4 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, 75 locations, 11 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: 0.9s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 8 NumberOfCodeBlocks, 8 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 3 thread instances CFG has 5 procedures, 89 locations, 14 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: 1.1s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 4 thread instances CFG has 6 procedures, 103 locations, 17 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: 1.3s, OverallIterations: 1, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred 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, 14 NumberOfCodeBlocks, 14 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 5 thread instances CFG has 7 procedures, 117 locations, 20 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: 1.6s, OverallIterations: 1, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred 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, 17 NumberOfCodeBlocks, 17 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 6 thread instances CFG has 8 procedures, 131 locations, 23 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: 1.3s, OverallIterations: 1, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=140occurred 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, 20 NumberOfCodeBlocks, 20 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 could not prove your program: Timeout Completed graceful shutdown