/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:06:45,231 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:06:45,309 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-SemanticLbe.epf [2023-11-17 16:06:45,345 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:06:45,345 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:06:45,346 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:06:45,346 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:06:45,346 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:06:45,347 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:06:45,347 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:06:45,347 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:06:45,348 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:06:45,348 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:06:45,348 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:06:45,350 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:06:45,351 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:06:45,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:06:45,355 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:06:45,355 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:06:45,355 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:06:45,356 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:06:45,357 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:06:45,357 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:06:45,357 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:06:45,358 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:06:45,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:06:45,358 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:06:45,358 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:06:45,358 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:06:45,359 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:06:45,359 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:06:45,360 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:06:45,360 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:06:45,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:06:45,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:06:45,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:06:45,610 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:06:45,610 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:06:45,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c [2023-11-17 16:06:46,827 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:06:47,037 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:06:47,038 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c [2023-11-17 16:06:47,044 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2146a85c/c8f6880c690a490b9b2a171439f24554/FLAG49f05bcca [2023-11-17 16:06:47,064 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2146a85c/c8f6880c690a490b9b2a171439f24554 [2023-11-17 16:06:47,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:06:47,069 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:06:47,072 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:06:47,072 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:06:47,076 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:06:47,077 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:06:47" (1/1) ... [2023-11-17 16:06:47,078 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f9e5c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:47, skipping insertion in model container [2023-11-17 16:06:47,078 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:06:47" (1/1) ... [2023-11-17 16:06:47,112 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:06:47,270 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c[4478,4491] [2023-11-17 16:06:47,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:06:47,283 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:06:47,308 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c[4478,4491] [2023-11-17 16:06:47,310 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:06:47,316 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:06:47,317 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:06:47,323 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:06:47,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:47 WrapperNode [2023-11-17 16:06:47,323 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:06:47,324 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:06:47,324 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:06:47,324 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:06:47,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:47" (1/1) ... [2023-11-17 16:06:47,337 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:47" (1/1) ... [2023-11-17 16:06:47,364 INFO L138 Inliner]: procedures = 25, calls = 100, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 293 [2023-11-17 16:06:47,364 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:06:47,365 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:06:47,365 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:06:47,365 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:06:47,372 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:47" (1/1) ... [2023-11-17 16:06:47,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:47" (1/1) ... [2023-11-17 16:06:47,375 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:47" (1/1) ... [2023-11-17 16:06:47,375 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:47" (1/1) ... [2023-11-17 16:06:47,387 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:47" (1/1) ... [2023-11-17 16:06:47,401 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:47" (1/1) ... [2023-11-17 16:06:47,408 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:47" (1/1) ... [2023-11-17 16:06:47,409 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:47" (1/1) ... [2023-11-17 16:06:47,412 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:06:47,413 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:06:47,413 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:06:47,413 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:06:47,414 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:47" (1/1) ... [2023-11-17 16:06:47,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:06:47,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:06:47,454 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) [2023-11-17 16:06:47,480 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 [2023-11-17 16:06:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:06:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:06:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:06:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:06:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:06:47,488 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:06:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:06:47,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:06:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 16:06:47,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 16:06:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-17 16:06:47,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-17 16:06:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:06:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-17 16:06:47,490 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-17 16:06:47,490 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-17 16:06:47,490 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-17 16:06:47,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 16:06:47,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 16:06:47,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:06:47,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:06:47,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:06:47,492 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 16:06:47,632 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:06:47,641 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:06:48,048 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:06:48,139 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:06:48,139 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 16:06:48,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:06:48 BoogieIcfgContainer [2023-11-17 16:06:48,141 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:06:48,143 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:06:48,143 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:06:48,146 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:06:48,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:06:47" (1/3) ... [2023-11-17 16:06:48,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eeff148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:06:48, skipping insertion in model container [2023-11-17 16:06:48,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:47" (2/3) ... [2023-11-17 16:06:48,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eeff148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:06:48, skipping insertion in model container [2023-11-17 16:06:48,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:06:48" (3/3) ... [2023-11-17 16:06:48,148 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2023-11-17 16:06:48,161 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:06:48,162 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:06:48,162 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:06:48,260 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-11-17 16:06:48,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 200 transitions, 442 flow [2023-11-17 16:06:48,401 INFO L124 PetriNetUnfolderBase]: 2/194 cut-off events. [2023-11-17 16:06:48,402 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-17 16:06:48,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 194 events. 2/194 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 95 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 150. Up to 2 conditions per place. [2023-11-17 16:06:48,407 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 200 transitions, 442 flow [2023-11-17 16:06:48,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 177 transitions, 390 flow [2023-11-17 16:06:48,415 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:06:48,433 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 177 transitions, 390 flow [2023-11-17 16:06:48,435 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 177 transitions, 390 flow [2023-11-17 16:06:48,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 177 transitions, 390 flow [2023-11-17 16:06:48,510 INFO L124 PetriNetUnfolderBase]: 2/177 cut-off events. [2023-11-17 16:06:48,510 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-17 16:06:48,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 177 events. 2/177 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 94 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 150. Up to 2 conditions per place. [2023-11-17 16:06:48,515 INFO L119 LiptonReduction]: Number of co-enabled transitions 3748 [2023-11-17 16:06:56,014 INFO L134 LiptonReduction]: Checked pairs total: 7328 [2023-11-17 16:06:56,014 INFO L136 LiptonReduction]: Total number of compositions: 148 [2023-11-17 16:06:56,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:06:56,035 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=LoopHeads, 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;@50acd6c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:06:56,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-17 16:06:56,044 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:06:56,045 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2023-11-17 16:06:56,045 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-17 16:06:56,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:56,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:06:56,046 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 16:06:56,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:56,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1611701307, now seen corresponding path program 1 times [2023-11-17 16:06:56,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:56,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112864556] [2023-11-17 16:06:56,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:56,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:57,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:57,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112864556] [2023-11-17 16:06:57,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112864556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:06:57,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:06:57,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:06:57,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754823701] [2023-11-17 16:06:57,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:06:57,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:06:57,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:57,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:06:57,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:06:57,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 348 [2023-11-17 16:06:57,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 38 transitions, 112 flow. Second operand has 6 states, 6 states have (on average 160.33333333333334) internal successors, (962), 6 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:57,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:57,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 348 [2023-11-17 16:06:57,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:07:00,058 INFO L124 PetriNetUnfolderBase]: 17545/23053 cut-off events. [2023-11-17 16:07:00,059 INFO L125 PetriNetUnfolderBase]: For 1999/1999 co-relation queries the response was YES. [2023-11-17 16:07:00,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48140 conditions, 23053 events. 17545/23053 cut-off events. For 1999/1999 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 108908 event pairs, 4719 based on Foata normal form. 1/23054 useless extension candidates. Maximal degree in co-relation 37576. Up to 10440 conditions per place. [2023-11-17 16:07:00,228 INFO L140 encePairwiseOnDemand]: 339/348 looper letters, 86 selfloop transitions, 13 changer transitions 12/111 dead transitions. [2023-11-17 16:07:00,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 111 transitions, 537 flow [2023-11-17 16:07:00,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:07:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:07:00,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 882 transitions. [2023-11-17 16:07:00,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506896551724138 [2023-11-17 16:07:00,250 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 882 transitions. [2023-11-17 16:07:00,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 882 transitions. [2023-11-17 16:07:00,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:07:00,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 882 transitions. [2023-11-17 16:07:00,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.4) internal successors, (882), 5 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:00,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 348.0) internal successors, (2088), 6 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:00,272 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 348.0) internal successors, (2088), 6 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:00,273 INFO L175 Difference]: Start difference. First operand has 57 places, 38 transitions, 112 flow. Second operand 5 states and 882 transitions. [2023-11-17 16:07:00,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 111 transitions, 537 flow [2023-11-17 16:07:00,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 111 transitions, 475 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-17 16:07:00,310 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 179 flow [2023-11-17 16:07:00,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-11-17 16:07:00,316 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -5 predicate places. [2023-11-17 16:07:00,317 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 179 flow [2023-11-17 16:07:00,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.33333333333334) internal successors, (962), 6 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:00,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:07:00,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:07:00,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:07:00,318 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 16:07:00,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:07:00,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1567920659, now seen corresponding path program 2 times [2023-11-17 16:07:00,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:07:00,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070895604] [2023-11-17 16:07:00,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:07:00,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:07:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:07:01,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:07:01,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:07:01,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070895604] [2023-11-17 16:07:01,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070895604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:07:01,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:07:01,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:07:01,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152756998] [2023-11-17 16:07:01,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:07:01,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:07:01,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:07:01,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:07:01,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:07:01,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 348 [2023-11-17 16:07:01,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 179 flow. Second operand has 6 states, 6 states have (on average 160.33333333333334) internal successors, (962), 6 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:01,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:07:01,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 348 [2023-11-17 16:07:01,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:07:03,428 INFO L124 PetriNetUnfolderBase]: 16943/22451 cut-off events. [2023-11-17 16:07:03,429 INFO L125 PetriNetUnfolderBase]: For 8865/8865 co-relation queries the response was YES. [2023-11-17 16:07:03,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63911 conditions, 22451 events. 16943/22451 cut-off events. For 8865/8865 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 109356 event pairs, 3257 based on Foata normal form. 1/22452 useless extension candidates. Maximal degree in co-relation 40562. Up to 10256 conditions per place. [2023-11-17 16:07:03,567 INFO L140 encePairwiseOnDemand]: 339/348 looper letters, 100 selfloop transitions, 18 changer transitions 19/137 dead transitions. [2023-11-17 16:07:03,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 137 transitions, 715 flow [2023-11-17 16:07:03,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:07:03,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:07:03,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1057 transitions. [2023-11-17 16:07:03,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062260536398467 [2023-11-17 16:07:03,571 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1057 transitions. [2023-11-17 16:07:03,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1057 transitions. [2023-11-17 16:07:03,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:07:03,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1057 transitions. [2023-11-17 16:07:03,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 176.16666666666666) internal successors, (1057), 6 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:03,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:03,580 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:03,581 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 179 flow. Second operand 6 states and 1057 transitions. [2023-11-17 16:07:03,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 137 transitions, 715 flow [2023-11-17 16:07:03,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 137 transitions, 700 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 16:07:03,593 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 273 flow [2023-11-17 16:07:03,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=273, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2023-11-17 16:07:03,596 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 1 predicate places. [2023-11-17 16:07:03,598 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 273 flow [2023-11-17 16:07:03,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.33333333333334) internal successors, (962), 6 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:03,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:07:03,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:07:03,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 16:07:03,603 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 16:07:03,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:07:03,606 INFO L85 PathProgramCache]: Analyzing trace with hash -139665331, now seen corresponding path program 3 times [2023-11-17 16:07:03,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:07:03,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017971823] [2023-11-17 16:07:03,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:07:03,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:07:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:07:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:07:03,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:07:03,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017971823] [2023-11-17 16:07:03,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017971823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:07:03,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:07:03,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:07:03,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440494718] [2023-11-17 16:07:03,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:07:03,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:07:03,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:07:03,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:07:03,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:07:03,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 348 [2023-11-17 16:07:03,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 273 flow. Second operand has 5 states, 5 states have (on average 167.6) internal successors, (838), 5 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:03,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:07:03,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 348 [2023-11-17 16:07:03,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:07:05,321 INFO L124 PetriNetUnfolderBase]: 13319/17548 cut-off events. [2023-11-17 16:07:05,321 INFO L125 PetriNetUnfolderBase]: For 22183/22183 co-relation queries the response was YES. [2023-11-17 16:07:05,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62322 conditions, 17548 events. 13319/17548 cut-off events. For 22183/22183 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 82379 event pairs, 1828 based on Foata normal form. 176/17724 useless extension candidates. Maximal degree in co-relation 32817. Up to 15722 conditions per place. [2023-11-17 16:07:05,451 INFO L140 encePairwiseOnDemand]: 336/348 looper letters, 83 selfloop transitions, 26 changer transitions 0/109 dead transitions. [2023-11-17 16:07:05,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 109 transitions, 676 flow [2023-11-17 16:07:05,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:07:05,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:07:05,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 896 transitions. [2023-11-17 16:07:05,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5149425287356322 [2023-11-17 16:07:05,454 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 896 transitions. [2023-11-17 16:07:05,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 896 transitions. [2023-11-17 16:07:05,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:07:05,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 896 transitions. [2023-11-17 16:07:05,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.2) internal successors, (896), 5 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:05,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 348.0) internal successors, (2088), 6 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:05,460 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 348.0) internal successors, (2088), 6 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:05,460 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 273 flow. Second operand 5 states and 896 transitions. [2023-11-17 16:07:05,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 109 transitions, 676 flow [2023-11-17 16:07:05,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 109 transitions, 563 flow, removed 24 selfloop flow, removed 6 redundant places. [2023-11-17 16:07:05,510 INFO L231 Difference]: Finished difference. Result has 57 places, 69 transitions, 319 flow [2023-11-17 16:07:05,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=319, PETRI_PLACES=57, PETRI_TRANSITIONS=69} [2023-11-17 16:07:05,511 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 0 predicate places. [2023-11-17 16:07:05,511 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 69 transitions, 319 flow [2023-11-17 16:07:05,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 167.6) internal successors, (838), 5 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:05,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:07:05,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:07:05,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 16:07:05,513 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 16:07:05,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:07:05,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1193729977, now seen corresponding path program 4 times [2023-11-17 16:07:05,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:07:05,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380652556] [2023-11-17 16:07:05,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:07:05,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:07:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:07:05,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:07:05,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:07:05,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380652556] [2023-11-17 16:07:05,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380652556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:07:05,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:07:05,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:07:05,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302188302] [2023-11-17 16:07:05,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:07:05,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 16:07:05,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:07:05,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 16:07:05,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-17 16:07:05,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 348 [2023-11-17 16:07:05,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 69 transitions, 319 flow. Second operand has 8 states, 8 states have (on average 164.75) internal successors, (1318), 8 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:05,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:07:05,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 348 [2023-11-17 16:07:05,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:07:08,668 INFO L124 PetriNetUnfolderBase]: 26571/35244 cut-off events. [2023-11-17 16:07:08,668 INFO L125 PetriNetUnfolderBase]: For 56258/56258 co-relation queries the response was YES. [2023-11-17 16:07:08,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125459 conditions, 35244 events. 26571/35244 cut-off events. For 56258/56258 co-relation queries the response was YES. Maximal size of possible extension queue 1210. Compared 185714 event pairs, 5491 based on Foata normal form. 64/35308 useless extension candidates. Maximal degree in co-relation 36898. Up to 15184 conditions per place. [2023-11-17 16:07:09,052 INFO L140 encePairwiseOnDemand]: 335/348 looper letters, 133 selfloop transitions, 151 changer transitions 0/284 dead transitions. [2023-11-17 16:07:09,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 284 transitions, 1890 flow [2023-11-17 16:07:09,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:07:09,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:07:09,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1458 transitions. [2023-11-17 16:07:09,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5237068965517241 [2023-11-17 16:07:09,069 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1458 transitions. [2023-11-17 16:07:09,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1458 transitions. [2023-11-17 16:07:09,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:07:09,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1458 transitions. [2023-11-17 16:07:09,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 182.25) internal successors, (1458), 8 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:09,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 348.0) internal successors, (3132), 9 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:09,079 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 348.0) internal successors, (3132), 9 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:09,079 INFO L175 Difference]: Start difference. First operand has 57 places, 69 transitions, 319 flow. Second operand 8 states and 1458 transitions. [2023-11-17 16:07:09,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 284 transitions, 1890 flow [2023-11-17 16:07:09,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 284 transitions, 1890 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 16:07:09,108 INFO L231 Difference]: Finished difference. Result has 67 places, 197 transitions, 1644 flow [2023-11-17 16:07:09,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1644, PETRI_PLACES=67, PETRI_TRANSITIONS=197} [2023-11-17 16:07:09,110 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2023-11-17 16:07:09,110 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 197 transitions, 1644 flow [2023-11-17 16:07:09,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 164.75) internal successors, (1318), 8 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:09,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:07:09,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:07:09,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 16:07:09,111 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 16:07:09,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:07:09,112 INFO L85 PathProgramCache]: Analyzing trace with hash -609152389, now seen corresponding path program 5 times [2023-11-17 16:07:09,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:07:09,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441320210] [2023-11-17 16:07:09,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:07:09,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:07:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:07:09,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:07:09,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:07:09,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441320210] [2023-11-17 16:07:09,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441320210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:07:09,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:07:09,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:07:09,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073711641] [2023-11-17 16:07:09,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:07:09,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:07:09,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:07:09,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:07:09,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:07:09,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 348 [2023-11-17 16:07:09,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 197 transitions, 1644 flow. Second operand has 6 states, 6 states have (on average 166.33333333333334) internal successors, (998), 6 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:09,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:07:09,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 348 [2023-11-17 16:07:09,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:07:13,931 INFO L124 PetriNetUnfolderBase]: 41303/54964 cut-off events. [2023-11-17 16:07:13,931 INFO L125 PetriNetUnfolderBase]: For 170864/170864 co-relation queries the response was YES. [2023-11-17 16:07:14,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276818 conditions, 54964 events. 41303/54964 cut-off events. For 170864/170864 co-relation queries the response was YES. Maximal size of possible extension queue 2018. Compared 309095 event pairs, 7068 based on Foata normal form. 576/55540 useless extension candidates. Maximal degree in co-relation 85096. Up to 31967 conditions per place. [2023-11-17 16:07:14,307 INFO L140 encePairwiseOnDemand]: 335/348 looper letters, 195 selfloop transitions, 211 changer transitions 0/406 dead transitions. [2023-11-17 16:07:14,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 406 transitions, 4002 flow [2023-11-17 16:07:14,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:07:14,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:07:14,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1096 transitions. [2023-11-17 16:07:14,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524904214559387 [2023-11-17 16:07:14,312 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1096 transitions. [2023-11-17 16:07:14,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1096 transitions. [2023-11-17 16:07:14,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:07:14,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1096 transitions. [2023-11-17 16:07:14,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 182.66666666666666) internal successors, (1096), 6 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:14,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:14,321 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:14,322 INFO L175 Difference]: Start difference. First operand has 67 places, 197 transitions, 1644 flow. Second operand 6 states and 1096 transitions. [2023-11-17 16:07:14,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 406 transitions, 4002 flow [2023-11-17 16:07:15,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 406 transitions, 3883 flow, removed 56 selfloop flow, removed 1 redundant places. [2023-11-17 16:07:15,531 INFO L231 Difference]: Finished difference. Result has 74 places, 321 transitions, 3647 flow [2023-11-17 16:07:15,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=1583, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3647, PETRI_PLACES=74, PETRI_TRANSITIONS=321} [2023-11-17 16:07:15,532 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 17 predicate places. [2023-11-17 16:07:15,532 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 321 transitions, 3647 flow [2023-11-17 16:07:15,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.33333333333334) internal successors, (998), 6 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:15,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:07:15,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:07:15,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 16:07:15,533 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 16:07:15,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:07:15,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1529290661, now seen corresponding path program 6 times [2023-11-17 16:07:15,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:07:15,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530423645] [2023-11-17 16:07:15,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:07:15,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:07:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:07:15,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:07:15,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:07:15,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530423645] [2023-11-17 16:07:15,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530423645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:07:15,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:07:15,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:07:15,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253464991] [2023-11-17 16:07:15,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:07:15,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 16:07:15,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:07:15,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 16:07:15,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-17 16:07:15,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 348 [2023-11-17 16:07:15,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 321 transitions, 3647 flow. Second operand has 8 states, 8 states have (on average 164.75) internal successors, (1318), 8 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:15,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:07:15,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 348 [2023-11-17 16:07:15,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:07:21,299 INFO L124 PetriNetUnfolderBase]: 41690/55481 cut-off events. [2023-11-17 16:07:21,299 INFO L125 PetriNetUnfolderBase]: For 193585/193585 co-relation queries the response was YES. [2023-11-17 16:07:21,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311332 conditions, 55481 events. 41690/55481 cut-off events. For 193585/193585 co-relation queries the response was YES. Maximal size of possible extension queue 2051. Compared 313225 event pairs, 6646 based on Foata normal form. 130/55611 useless extension candidates. Maximal degree in co-relation 247619. Up to 23115 conditions per place. [2023-11-17 16:07:21,706 INFO L140 encePairwiseOnDemand]: 335/348 looper letters, 136 selfloop transitions, 325 changer transitions 0/461 dead transitions. [2023-11-17 16:07:21,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 461 transitions, 5548 flow [2023-11-17 16:07:21,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:07:21,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:07:21,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1460 transitions. [2023-11-17 16:07:21,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244252873563219 [2023-11-17 16:07:21,711 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1460 transitions. [2023-11-17 16:07:21,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1460 transitions. [2023-11-17 16:07:21,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:07:21,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1460 transitions. [2023-11-17 16:07:21,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 182.5) internal successors, (1460), 8 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:21,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 348.0) internal successors, (3132), 9 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:21,720 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 348.0) internal successors, (3132), 9 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:21,721 INFO L175 Difference]: Start difference. First operand has 74 places, 321 transitions, 3647 flow. Second operand 8 states and 1460 transitions. [2023-11-17 16:07:21,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 461 transitions, 5548 flow [2023-11-17 16:07:22,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 461 transitions, 5541 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:07:22,969 INFO L231 Difference]: Finished difference. Result has 81 places, 372 transitions, 5070 flow [2023-11-17 16:07:22,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=3640, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5070, PETRI_PLACES=81, PETRI_TRANSITIONS=372} [2023-11-17 16:07:22,970 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 24 predicate places. [2023-11-17 16:07:22,970 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 372 transitions, 5070 flow [2023-11-17 16:07:22,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 164.75) internal successors, (1318), 8 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:22,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:07:22,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:07:22,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 16:07:22,971 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 16:07:22,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:07:22,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1754245187, now seen corresponding path program 7 times [2023-11-17 16:07:22,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:07:22,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47650641] [2023-11-17 16:07:22,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:07:22,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:07:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:07:23,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:07:23,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:07:23,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47650641] [2023-11-17 16:07:23,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47650641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:07:23,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:07:23,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 16:07:23,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181285930] [2023-11-17 16:07:23,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:07:23,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 16:07:23,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:07:23,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 16:07:23,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-17 16:07:23,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 348 [2023-11-17 16:07:23,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 372 transitions, 5070 flow. Second operand has 10 states, 10 states have (on average 163.8) internal successors, (1638), 10 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:23,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:07:23,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 348 [2023-11-17 16:07:23,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:07:29,071 INFO L124 PetriNetUnfolderBase]: 42518/56781 cut-off events. [2023-11-17 16:07:29,071 INFO L125 PetriNetUnfolderBase]: For 238036/238036 co-relation queries the response was YES. [2023-11-17 16:07:29,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353359 conditions, 56781 events. 42518/56781 cut-off events. For 238036/238036 co-relation queries the response was YES. Maximal size of possible extension queue 2084. Compared 322819 event pairs, 6797 based on Foata normal form. 48/56829 useless extension candidates. Maximal degree in co-relation 280560. Up to 23787 conditions per place. [2023-11-17 16:07:29,692 INFO L140 encePairwiseOnDemand]: 335/348 looper letters, 144 selfloop transitions, 521 changer transitions 0/665 dead transitions. [2023-11-17 16:07:29,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 665 transitions, 9391 flow [2023-11-17 16:07:29,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 16:07:29,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 16:07:29,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1970 transitions. [2023-11-17 16:07:29,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5146290491118077 [2023-11-17 16:07:29,698 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1970 transitions. [2023-11-17 16:07:29,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1970 transitions. [2023-11-17 16:07:29,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:07:29,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1970 transitions. [2023-11-17 16:07:29,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 179.0909090909091) internal successors, (1970), 11 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:29,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 348.0) internal successors, (4176), 12 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:29,717 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 348.0) internal successors, (4176), 12 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:29,717 INFO L175 Difference]: Start difference. First operand has 81 places, 372 transitions, 5070 flow. Second operand 11 states and 1970 transitions. [2023-11-17 16:07:29,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 665 transitions, 9391 flow [2023-11-17 16:07:32,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 665 transitions, 8672 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-17 16:07:32,507 INFO L231 Difference]: Finished difference. Result has 88 places, 567 transitions, 8467 flow [2023-11-17 16:07:32,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=4572, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=337, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8467, PETRI_PLACES=88, PETRI_TRANSITIONS=567} [2023-11-17 16:07:32,509 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2023-11-17 16:07:32,509 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 567 transitions, 8467 flow [2023-11-17 16:07:32,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 163.8) internal successors, (1638), 10 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:32,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:07:32,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:07:32,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 16:07:32,510 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 16:07:32,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:07:32,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1590165329, now seen corresponding path program 8 times [2023-11-17 16:07:32,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:07:32,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805410124] [2023-11-17 16:07:32,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:07:32,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:07:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:07:32,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:07:32,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:07:32,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805410124] [2023-11-17 16:07:32,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805410124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:07:32,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:07:32,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 16:07:32,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442218729] [2023-11-17 16:07:32,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:07:32,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:07:32,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:07:32,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:07:32,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:07:32,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 348 [2023-11-17 16:07:32,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 567 transitions, 8467 flow. Second operand has 7 states, 7 states have (on average 165.42857142857142) internal successors, (1158), 7 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:32,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:07:32,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 348 [2023-11-17 16:07:32,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:07:40,843 INFO L124 PetriNetUnfolderBase]: 50794/68279 cut-off events. [2023-11-17 16:07:40,843 INFO L125 PetriNetUnfolderBase]: For 380961/380961 co-relation queries the response was YES. [2023-11-17 16:07:41,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459081 conditions, 68279 events. 50794/68279 cut-off events. For 380961/380961 co-relation queries the response was YES. Maximal size of possible extension queue 2618. Compared 405828 event pairs, 7199 based on Foata normal form. 686/68965 useless extension candidates. Maximal degree in co-relation 354006. Up to 29063 conditions per place. [2023-11-17 16:07:41,358 INFO L140 encePairwiseOnDemand]: 335/348 looper letters, 246 selfloop transitions, 657 changer transitions 0/903 dead transitions. [2023-11-17 16:07:41,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 903 transitions, 14656 flow [2023-11-17 16:07:41,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:07:41,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:07:41,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1284 transitions. [2023-11-17 16:07:41,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5270935960591133 [2023-11-17 16:07:41,361 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1284 transitions. [2023-11-17 16:07:41,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1284 transitions. [2023-11-17 16:07:41,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:07:41,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1284 transitions. [2023-11-17 16:07:41,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 183.42857142857142) internal successors, (1284), 7 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:41,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 348.0) internal successors, (2784), 8 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:41,369 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 348.0) internal successors, (2784), 8 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:41,369 INFO L175 Difference]: Start difference. First operand has 88 places, 567 transitions, 8467 flow. Second operand 7 states and 1284 transitions. [2023-11-17 16:07:41,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 903 transitions, 14656 flow [2023-11-17 16:07:47,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 903 transitions, 14557 flow, removed 46 selfloop flow, removed 1 redundant places. [2023-11-17 16:07:47,824 INFO L231 Difference]: Finished difference. Result has 96 places, 813 transitions, 14925 flow [2023-11-17 16:07:47,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=8388, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=439, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14925, PETRI_PLACES=96, PETRI_TRANSITIONS=813} [2023-11-17 16:07:47,825 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 39 predicate places. [2023-11-17 16:07:47,825 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 813 transitions, 14925 flow [2023-11-17 16:07:47,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 165.42857142857142) internal successors, (1158), 7 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:47,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:07:47,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:07:47,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 16:07:47,826 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 16:07:47,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:07:47,827 INFO L85 PathProgramCache]: Analyzing trace with hash 744079925, now seen corresponding path program 9 times [2023-11-17 16:07:47,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:07:47,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230688480] [2023-11-17 16:07:47,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:07:47,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:07:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:07:47,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:07:47,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:07:47,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230688480] [2023-11-17 16:07:47,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230688480] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:07:47,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:07:47,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 16:07:47,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761289612] [2023-11-17 16:07:47,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:07:47,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:07:47,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:07:47,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:07:47,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:07:47,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 348 [2023-11-17 16:07:47,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 813 transitions, 14925 flow. Second operand has 7 states, 7 states have (on average 165.42857142857142) internal successors, (1158), 7 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:47,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:07:47,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 348 [2023-11-17 16:07:47,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:07:58,586 INFO L124 PetriNetUnfolderBase]: 52466/70593 cut-off events. [2023-11-17 16:07:58,587 INFO L125 PetriNetUnfolderBase]: For 556725/556725 co-relation queries the response was YES. [2023-11-17 16:07:58,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551162 conditions, 70593 events. 52466/70593 cut-off events. For 556725/556725 co-relation queries the response was YES. Maximal size of possible extension queue 2746. Compared 422822 event pairs, 7176 based on Foata normal form. 654/71247 useless extension candidates. Maximal degree in co-relation 420125. Up to 29907 conditions per place. [2023-11-17 16:07:59,139 INFO L140 encePairwiseOnDemand]: 335/348 looper letters, 244 selfloop transitions, 795 changer transitions 0/1039 dead transitions. [2023-11-17 16:07:59,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 1039 transitions, 20386 flow [2023-11-17 16:07:59,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:07:59,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:07:59,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1282 transitions. [2023-11-17 16:07:59,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5262725779967159 [2023-11-17 16:07:59,142 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1282 transitions. [2023-11-17 16:07:59,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1282 transitions. [2023-11-17 16:07:59,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:07:59,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1282 transitions. [2023-11-17 16:07:59,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 183.14285714285714) internal successors, (1282), 7 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:59,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 348.0) internal successors, (2784), 8 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:59,148 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 348.0) internal successors, (2784), 8 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:59,148 INFO L175 Difference]: Start difference. First operand has 96 places, 813 transitions, 14925 flow. Second operand 7 states and 1282 transitions. [2023-11-17 16:07:59,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 1039 transitions, 20386 flow [2023-11-17 16:08:06,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 1039 transitions, 20379 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:08:06,843 INFO L231 Difference]: Finished difference. Result has 101 places, 951 transitions, 19536 flow [2023-11-17 16:08:06,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=14918, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=813, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=657, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19536, PETRI_PLACES=101, PETRI_TRANSITIONS=951} [2023-11-17 16:08:06,844 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 44 predicate places. [2023-11-17 16:08:06,845 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 951 transitions, 19536 flow [2023-11-17 16:08:06,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 165.42857142857142) internal successors, (1158), 7 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:08:06,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:08:06,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:08:06,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 16:08:06,846 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 16:08:06,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:08:06,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1602207259, now seen corresponding path program 10 times [2023-11-17 16:08:06,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:08:06,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741481274] [2023-11-17 16:08:06,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:08:06,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:08:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:08:06,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:08:06,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:08:06,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741481274] [2023-11-17 16:08:06,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741481274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:08:06,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:08:06,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:08:06,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825982046] [2023-11-17 16:08:06,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:08:06,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:08:06,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:08:06,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:08:06,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:08:06,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 348 [2023-11-17 16:08:06,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 951 transitions, 19536 flow. Second operand has 6 states, 6 states have (on average 166.33333333333334) internal successors, (998), 6 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:08:06,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:08:06,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 348 [2023-11-17 16:08:06,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:08:19,522 INFO L124 PetriNetUnfolderBase]: 55995/75750 cut-off events. [2023-11-17 16:08:19,523 INFO L125 PetriNetUnfolderBase]: For 755607/755607 co-relation queries the response was YES. [2023-11-17 16:08:19,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631767 conditions, 75750 events. 55995/75750 cut-off events. For 755607/755607 co-relation queries the response was YES. Maximal size of possible extension queue 3055. Compared 464579 event pairs, 8120 based on Foata normal form. 1748/77498 useless extension candidates. Maximal degree in co-relation 483871. Up to 42437 conditions per place. [2023-11-17 16:08:20,117 INFO L140 encePairwiseOnDemand]: 335/348 looper letters, 381 selfloop transitions, 958 changer transitions 0/1339 dead transitions. [2023-11-17 16:08:20,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 1339 transitions, 29748 flow [2023-11-17 16:08:20,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:08:20,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:08:20,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1100 transitions. [2023-11-17 16:08:20,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268199233716475 [2023-11-17 16:08:20,120 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1100 transitions. [2023-11-17 16:08:20,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1100 transitions. [2023-11-17 16:08:20,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:08:20,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1100 transitions. [2023-11-17 16:08:20,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:08:20,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:08:20,126 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:08:20,126 INFO L175 Difference]: Start difference. First operand has 101 places, 951 transitions, 19536 flow. Second operand 6 states and 1100 transitions. [2023-11-17 16:08:20,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 1339 transitions, 29748 flow [2023-11-17 16:08:29,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 1339 transitions, 28485 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 16:08:29,610 INFO L231 Difference]: Finished difference. Result has 103 places, 1249 transitions, 27782 flow [2023-11-17 16:08:29,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=18442, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=945, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=654, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=27782, PETRI_PLACES=103, PETRI_TRANSITIONS=1249} [2023-11-17 16:08:29,612 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 46 predicate places. [2023-11-17 16:08:29,613 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 1249 transitions, 27782 flow [2023-11-17 16:08:29,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.33333333333334) internal successors, (998), 6 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:08:29,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:08:29,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:08:29,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 16:08:29,615 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 16:08:29,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:08:29,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1027951575, now seen corresponding path program 11 times [2023-11-17 16:08:29,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:08:29,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334686878] [2023-11-17 16:08:29,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:08:29,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:08:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:08:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:08:29,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:08:29,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334686878] [2023-11-17 16:08:29,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334686878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:08:29,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:08:29,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:08:29,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704205221] [2023-11-17 16:08:29,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:08:29,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:08:29,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:08:29,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:08:29,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:08:29,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 348 [2023-11-17 16:08:29,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 1249 transitions, 27782 flow. Second operand has 6 states, 6 states have (on average 166.33333333333334) internal successors, (998), 6 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:08:29,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:08:29,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 348 [2023-11-17 16:08:29,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:08:45,657 INFO L124 PetriNetUnfolderBase]: 58998/80183 cut-off events. [2023-11-17 16:08:45,658 INFO L125 PetriNetUnfolderBase]: For 877842/877842 co-relation queries the response was YES. [2023-11-17 16:08:45,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 675744 conditions, 80183 events. 58998/80183 cut-off events. For 877842/877842 co-relation queries the response was YES. Maximal size of possible extension queue 3330. Compared 502491 event pairs, 8106 based on Foata normal form. 1578/81761 useless extension candidates. Maximal degree in co-relation 513289. Up to 42437 conditions per place. [2023-11-17 16:08:46,518 INFO L140 encePairwiseOnDemand]: 335/348 looper letters, 381 selfloop transitions, 1203 changer transitions 0/1584 dead transitions. [2023-11-17 16:08:46,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 1584 transitions, 37754 flow [2023-11-17 16:08:46,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:08:46,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:08:46,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1100 transitions. [2023-11-17 16:08:46,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268199233716475 [2023-11-17 16:08:46,521 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1100 transitions. [2023-11-17 16:08:46,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1100 transitions. [2023-11-17 16:08:46,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:08:46,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1100 transitions. [2023-11-17 16:08:46,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:08:46,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:08:46,528 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:08:46,528 INFO L175 Difference]: Start difference. First operand has 103 places, 1249 transitions, 27782 flow. Second operand 6 states and 1100 transitions. [2023-11-17 16:08:46,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 1584 transitions, 37754 flow [2023-11-17 16:08:56,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 1584 transitions, 36495 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 16:08:56,763 INFO L231 Difference]: Finished difference. Result has 106 places, 1496 transitions, 35818 flow [2023-11-17 16:08:56,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=26433, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=942, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=35818, PETRI_PLACES=106, PETRI_TRANSITIONS=1496} [2023-11-17 16:08:56,765 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 49 predicate places. [2023-11-17 16:08:56,765 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 1496 transitions, 35818 flow [2023-11-17 16:08:56,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.33333333333334) internal successors, (998), 6 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:08:56,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:08:56,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:08:56,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 16:08:56,765 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 16:08:56,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:08:56,766 INFO L85 PathProgramCache]: Analyzing trace with hash 902587543, now seen corresponding path program 12 times [2023-11-17 16:08:56,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:08:56,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845419804] [2023-11-17 16:08:56,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:08:56,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:08:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:08:56,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:08:56,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:08:56,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845419804] [2023-11-17 16:08:56,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845419804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:08:56,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:08:56,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:08:56,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84270401] [2023-11-17 16:08:56,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:08:56,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:08:56,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:08:56,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:08:56,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:08:56,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 348 [2023-11-17 16:08:56,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 1496 transitions, 35818 flow. Second operand has 6 states, 6 states have (on average 166.33333333333334) internal successors, (998), 6 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:08:56,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:08:56,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 348 [2023-11-17 16:08:56,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand