/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:07:38,993 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:07:39,060 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-NoLbe.epf [2023-12-09 15:07:39,094 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:07:39,095 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:07:39,095 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:07:39,095 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:07:39,096 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:07:39,096 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:07:39,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:07:39,099 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:07:39,100 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:07:39,100 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:07:39,101 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:07:39,101 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:07:39,101 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:07:39,101 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:07:39,102 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:07:39,102 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:07:39,102 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:07:39,102 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:07:39,103 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:07:39,103 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:07:39,103 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:07:39,103 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:07:39,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:07:39,104 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:07:39,104 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:07:39,105 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:07:39,105 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:07:39,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:07:39,106 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:07:39,106 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:07:39,106 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:07:39,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:07:39,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:07:39,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:07:39,317 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:07:39,317 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:07:39,318 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c [2023-12-09 15:07:40,294 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:07:40,455 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:07:40,456 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c [2023-12-09 15:07:40,461 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88ba4aff7/92567da2cd1146f7a759f6e85993fc16/FLAGf569e6354 [2023-12-09 15:07:40,475 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88ba4aff7/92567da2cd1146f7a759f6e85993fc16 [2023-12-09 15:07:40,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:07:40,478 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:07:40,479 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:07:40,479 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:07:40,482 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:07:40,482 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:07:40" (1/1) ... [2023-12-09 15:07:40,483 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@adcc6ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:40, skipping insertion in model container [2023-12-09 15:07:40,483 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:07:40" (1/1) ... [2023-12-09 15:07:40,501 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:07:40,660 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/chl-array-int-trans.wvr.c[2767,2780] [2023-12-09 15:07:40,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:07:40,680 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:07:40,709 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/chl-array-int-trans.wvr.c[2767,2780] [2023-12-09 15:07:40,712 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:07:40,725 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:07:40,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:40 WrapperNode [2023-12-09 15:07:40,726 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:07:40,727 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:07:40,727 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:07:40,727 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:07:40,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:40" (1/1) ... [2023-12-09 15:07:40,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:40" (1/1) ... [2023-12-09 15:07:40,784 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 288 [2023-12-09 15:07:40,784 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:07:40,785 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:07:40,785 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:07:40,785 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:07:40,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:40" (1/1) ... [2023-12-09 15:07:40,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:40" (1/1) ... [2023-12-09 15:07:40,795 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:40" (1/1) ... [2023-12-09 15:07:40,795 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:40" (1/1) ... [2023-12-09 15:07:40,801 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:40" (1/1) ... [2023-12-09 15:07:40,804 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:40" (1/1) ... [2023-12-09 15:07:40,805 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:40" (1/1) ... [2023-12-09 15:07:40,806 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:40" (1/1) ... [2023-12-09 15:07:40,808 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:07:40,809 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:07:40,809 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:07:40,809 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:07:40,810 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:40" (1/1) ... [2023-12-09 15:07:40,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:07:40,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:07:40,850 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) [2023-12-09 15:07:40,867 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 [2023-12-09 15:07:40,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:07:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:07:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:07:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:07:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:07:40,888 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:07:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:07:40,889 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:07:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-09 15:07:40,889 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-09 15:07:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:07:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-09 15:07:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:07:40,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:07:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:07:40,890 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 15:07:40,967 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:07:40,969 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:07:41,401 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:07:41,420 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:07:41,420 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-09 15:07:41,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:07:41 BoogieIcfgContainer [2023-12-09 15:07:41,422 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:07:41,424 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:07:41,424 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:07:41,426 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:07:41,426 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:07:40" (1/3) ... [2023-12-09 15:07:41,427 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152922bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:07:41, skipping insertion in model container [2023-12-09 15:07:41,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:07:40" (2/3) ... [2023-12-09 15:07:41,427 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152922bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:07:41, skipping insertion in model container [2023-12-09 15:07:41,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:07:41" (3/3) ... [2023-12-09 15:07:41,428 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2023-12-09 15:07:41,440 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:07:41,440 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:07:41,440 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:07:41,538 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-12-09 15:07:41,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 358 transitions, 737 flow [2023-12-09 15:07:41,721 INFO L124 PetriNetUnfolderBase]: 28/355 cut-off events. [2023-12-09 15:07:41,721 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-12-09 15:07:41,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 355 events. 28/355 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 595 event pairs, 0 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 276. Up to 3 conditions per place. [2023-12-09 15:07:41,731 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 358 transitions, 737 flow [2023-12-09 15:07:41,739 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 326 places, 344 transitions, 706 flow [2023-12-09 15:07:41,751 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:07:41,756 INFO L362 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=true, 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;@60044134, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:07:41,757 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-09 15:07:41,816 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:07:41,816 INFO L124 PetriNetUnfolderBase]: 28/343 cut-off events. [2023-12-09 15:07:41,816 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-12-09 15:07:41,817 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:07:41,817 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:07:41,818 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:07:41,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:07:41,823 INFO L85 PathProgramCache]: Analyzing trace with hash -871495324, now seen corresponding path program 1 times [2023-12-09 15:07:41,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:07:41,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631636780] [2023-12-09 15:07:41,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:41,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:07:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:42,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:07:42,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:42,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631636780] [2023-12-09 15:07:42,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631636780] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:07:42,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:07:42,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-09 15:07:42,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279411942] [2023-12-09 15:07:42,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:07:42,749 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:07:42,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:07:42,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:07:42,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:07:42,792 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 358 [2023-12-09 15:07:42,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 344 transitions, 706 flow. Second operand has 14 states, 14 states have (on average 235.14285714285714) internal successors, (3292), 14 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:42,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:07:42,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 358 [2023-12-09 15:07:42,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:07:44,061 INFO L124 PetriNetUnfolderBase]: 497/4014 cut-off events. [2023-12-09 15:07:44,061 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2023-12-09 15:07:44,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4986 conditions, 4014 events. 497/4014 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 39077 event pairs, 147 based on Foata normal form. 217/3814 useless extension candidates. Maximal degree in co-relation 2470. Up to 267 conditions per place. [2023-12-09 15:07:44,091 INFO L140 encePairwiseOnDemand]: 308/358 looper letters, 175 selfloop transitions, 23 changer transitions 19/433 dead transitions. [2023-12-09 15:07:44,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 433 transitions, 1357 flow [2023-12-09 15:07:44,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-09 15:07:44,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-12-09 15:07:44,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 6450 transitions. [2023-12-09 15:07:44,114 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6672873991309746 [2023-12-09 15:07:44,115 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 6450 transitions. [2023-12-09 15:07:44,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 6450 transitions. [2023-12-09 15:07:44,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:07:44,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 6450 transitions. [2023-12-09 15:07:44,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 238.88888888888889) internal successors, (6450), 27 states have internal predecessors, (6450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:44,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 358.0) internal successors, (10024), 28 states have internal predecessors, (10024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:44,156 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 358.0) internal successors, (10024), 28 states have internal predecessors, (10024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:44,163 INFO L308 CegarLoopForPetriNet]: 326 programPoint places, 26 predicate places. [2023-12-09 15:07:44,163 INFO L500 AbstractCegarLoop]: Abstraction has has 352 places, 433 transitions, 1357 flow [2023-12-09 15:07:44,166 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.14285714285714) internal successors, (3292), 14 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:44,166 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:07:44,166 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:07:44,167 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:07:44,167 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:07:44,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:07:44,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1210752103, now seen corresponding path program 1 times [2023-12-09 15:07:44,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:07:44,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729393508] [2023-12-09 15:07:44,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:44,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:07:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:07:44,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:44,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729393508] [2023-12-09 15:07:44,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729393508] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:07:44,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216229795] [2023-12-09 15:07:44,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:44,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:07:44,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:07:44,710 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:07:44,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 15:07:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:44,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-09 15:07:44,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:07:45,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:07:45,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:07:45,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:07:45,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216229795] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:07:45,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:07:45,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15, 13] total 26 [2023-12-09 15:07:45,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550892720] [2023-12-09 15:07:45,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:07:45,570 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-09 15:07:45,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:07:45,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-09 15:07:45,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2023-12-09 15:07:45,574 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 358 [2023-12-09 15:07:45,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 433 transitions, 1357 flow. Second operand has 13 states, 13 states have (on average 235.92307692307693) internal successors, (3067), 13 states have internal predecessors, (3067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:45,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:07:45,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 358 [2023-12-09 15:07:45,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:07:46,830 INFO L124 PetriNetUnfolderBase]: 855/6437 cut-off events. [2023-12-09 15:07:46,830 INFO L125 PetriNetUnfolderBase]: For 867/1041 co-relation queries the response was YES. [2023-12-09 15:07:46,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9180 conditions, 6437 events. 855/6437 cut-off events. For 867/1041 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 66997 event pairs, 222 based on Foata normal form. 0/5733 useless extension candidates. Maximal degree in co-relation 2997. Up to 609 conditions per place. [2023-12-09 15:07:46,867 INFO L140 encePairwiseOnDemand]: 325/358 looper letters, 213 selfloop transitions, 31 changer transitions 25/486 dead transitions. [2023-12-09 15:07:46,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 486 transitions, 2136 flow [2023-12-09 15:07:46,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-09 15:07:46,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-12-09 15:07:46,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5042 transitions. [2023-12-09 15:07:46,875 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6706570896515031 [2023-12-09 15:07:46,875 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5042 transitions. [2023-12-09 15:07:46,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5042 transitions. [2023-12-09 15:07:46,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:07:46,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5042 transitions. [2023-12-09 15:07:46,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 240.0952380952381) internal successors, (5042), 21 states have internal predecessors, (5042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:46,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 358.0) internal successors, (7876), 22 states have internal predecessors, (7876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:46,895 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 358.0) internal successors, (7876), 22 states have internal predecessors, (7876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:46,895 INFO L308 CegarLoopForPetriNet]: 326 programPoint places, 46 predicate places. [2023-12-09 15:07:46,895 INFO L500 AbstractCegarLoop]: Abstraction has has 372 places, 486 transitions, 2136 flow [2023-12-09 15:07:46,896 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 235.92307692307693) internal successors, (3067), 13 states have internal predecessors, (3067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:46,897 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:07:46,897 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:07:46,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-09 15:07:47,120 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:07:47,121 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:07:47,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:07:47,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1075783601, now seen corresponding path program 1 times [2023-12-09 15:07:47,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:07:47,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488671335] [2023-12-09 15:07:47,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:47,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:07:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:47,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:07:47,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:47,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488671335] [2023-12-09 15:07:47,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488671335] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:07:47,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714911734] [2023-12-09 15:07:47,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:47,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:07:47,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:07:47,441 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:07:47,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 15:07:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:47,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-09 15:07:47,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:07:47,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:07:47,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:07:48,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:07:48,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714911734] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:07:48,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:07:48,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2023-12-09 15:07:48,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922273062] [2023-12-09 15:07:48,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:07:48,187 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:07:48,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:07:48,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:07:48,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2023-12-09 15:07:48,189 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 358 [2023-12-09 15:07:48,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 486 transitions, 2136 flow. Second operand has 11 states, 11 states have (on average 272.27272727272725) internal successors, (2995), 11 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:48,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:07:48,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 358 [2023-12-09 15:07:48,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:07:49,522 INFO L124 PetriNetUnfolderBase]: 1643/8305 cut-off events. [2023-12-09 15:07:49,522 INFO L125 PetriNetUnfolderBase]: For 4468/5152 co-relation queries the response was YES. [2023-12-09 15:07:49,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15427 conditions, 8305 events. 1643/8305 cut-off events. For 4468/5152 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 86390 event pairs, 313 based on Foata normal form. 2/7286 useless extension candidates. Maximal degree in co-relation 5291. Up to 1086 conditions per place. [2023-12-09 15:07:49,580 INFO L140 encePairwiseOnDemand]: 336/358 looper letters, 208 selfloop transitions, 33 changer transitions 28/551 dead transitions. [2023-12-09 15:07:49,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 551 transitions, 3005 flow [2023-12-09 15:07:49,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:07:49,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:07:49,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4456 transitions. [2023-12-09 15:07:49,588 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7779329608938548 [2023-12-09 15:07:49,588 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4456 transitions. [2023-12-09 15:07:49,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4456 transitions. [2023-12-09 15:07:49,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:07:49,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4456 transitions. [2023-12-09 15:07:49,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 278.5) internal successors, (4456), 16 states have internal predecessors, (4456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:49,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 358.0) internal successors, (6086), 17 states have internal predecessors, (6086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:49,614 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 358.0) internal successors, (6086), 17 states have internal predecessors, (6086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:49,615 INFO L308 CegarLoopForPetriNet]: 326 programPoint places, 61 predicate places. [2023-12-09 15:07:49,616 INFO L500 AbstractCegarLoop]: Abstraction has has 387 places, 551 transitions, 3005 flow [2023-12-09 15:07:49,616 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 272.27272727272725) internal successors, (2995), 11 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:49,616 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:07:49,617 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-12-09 15:07:49,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-09 15:07:49,824 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-12-09 15:07:49,825 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:07:49,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:07:49,825 INFO L85 PathProgramCache]: Analyzing trace with hash 807559837, now seen corresponding path program 1 times [2023-12-09 15:07:49,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:07:49,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671900174] [2023-12-09 15:07:49,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:49,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:07:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:50,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:07:50,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:50,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671900174] [2023-12-09 15:07:50,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671900174] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:07:50,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218352402] [2023-12-09 15:07:50,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:50,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:07:50,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:07:50,337 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:07:50,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-09 15:07:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:50,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-09 15:07:50,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:07:50,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:07:50,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:07:51,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:07:51,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218352402] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:07:51,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:07:51,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14, 13] total 28 [2023-12-09 15:07:51,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608698855] [2023-12-09 15:07:51,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:07:51,083 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-09 15:07:51,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:07:51,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-09 15:07:51,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2023-12-09 15:07:51,087 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 358 [2023-12-09 15:07:51,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 551 transitions, 3005 flow. Second operand has 13 states, 13 states have (on average 236.30769230769232) internal successors, (3072), 13 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:51,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:07:51,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 358 [2023-12-09 15:07:51,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:07:54,789 INFO L124 PetriNetUnfolderBase]: 4737/25168 cut-off events. [2023-12-09 15:07:54,789 INFO L125 PetriNetUnfolderBase]: For 22478/24500 co-relation queries the response was YES. [2023-12-09 15:07:54,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50393 conditions, 25168 events. 4737/25168 cut-off events. For 22478/24500 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 328225 event pairs, 673 based on Foata normal form. 5/22065 useless extension candidates. Maximal degree in co-relation 7391. Up to 2718 conditions per place. [2023-12-09 15:07:54,959 INFO L140 encePairwiseOnDemand]: 321/358 looper letters, 593 selfloop transitions, 87 changer transitions 92/1005 dead transitions. [2023-12-09 15:07:54,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 1005 transitions, 8347 flow [2023-12-09 15:07:54,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-09 15:07:54,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-12-09 15:07:54,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 5948 transitions. [2023-12-09 15:07:54,968 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6645810055865922 [2023-12-09 15:07:54,968 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 5948 transitions. [2023-12-09 15:07:54,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 5948 transitions. [2023-12-09 15:07:54,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:07:54,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 5948 transitions. [2023-12-09 15:07:54,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 237.92) internal successors, (5948), 25 states have internal predecessors, (5948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:54,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 358.0) internal successors, (9308), 26 states have internal predecessors, (9308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:54,986 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 358.0) internal successors, (9308), 26 states have internal predecessors, (9308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:54,986 INFO L308 CegarLoopForPetriNet]: 326 programPoint places, 85 predicate places. [2023-12-09 15:07:54,986 INFO L500 AbstractCegarLoop]: Abstraction has has 411 places, 1005 transitions, 8347 flow [2023-12-09 15:07:54,987 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 236.30769230769232) internal successors, (3072), 13 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:54,987 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:07:54,987 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:07:54,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-09 15:07:55,195 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:07:55,195 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:07:55,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:07:55,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1124179107, now seen corresponding path program 1 times [2023-12-09 15:07:55,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:07:55,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454510869] [2023-12-09 15:07:55,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:55,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:07:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:55,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:07:55,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:07:55,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454510869] [2023-12-09 15:07:55,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454510869] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:07:55,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981591820] [2023-12-09 15:07:55,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:07:55,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:07:55,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:07:55,493 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:07:55,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-09 15:07:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:07:55,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-09 15:07:55,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:07:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:07:56,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:07:56,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:07:56,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981591820] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:07:56,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:07:56,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2023-12-09 15:07:56,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348065789] [2023-12-09 15:07:56,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:07:56,499 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:07:56,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:07:56,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:07:56,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2023-12-09 15:07:56,509 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 358 [2023-12-09 15:07:56,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 1005 transitions, 8347 flow. Second operand has 11 states, 11 states have (on average 272.72727272727275) internal successors, (3000), 11 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:07:56,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:07:56,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 358 [2023-12-09 15:07:56,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:08:03,488 INFO L124 PetriNetUnfolderBase]: 9229/48643 cut-off events. [2023-12-09 15:08:03,488 INFO L125 PetriNetUnfolderBase]: For 63771/68537 co-relation queries the response was YES. [2023-12-09 15:08:03,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104031 conditions, 48643 events. 9229/48643 cut-off events. For 63771/68537 co-relation queries the response was YES. Maximal size of possible extension queue 957. Compared 709025 event pairs, 1933 based on Foata normal form. 179/43005 useless extension candidates. Maximal degree in co-relation 14983. Up to 5074 conditions per place. [2023-12-09 15:08:03,972 INFO L140 encePairwiseOnDemand]: 336/358 looper letters, 726 selfloop transitions, 71 changer transitions 99/1238 dead transitions. [2023-12-09 15:08:03,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 1238 transitions, 12476 flow [2023-12-09 15:08:03,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:08:03,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:08:03,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4477 transitions. [2023-12-09 15:08:03,980 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7815991620111732 [2023-12-09 15:08:03,980 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4477 transitions. [2023-12-09 15:08:03,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4477 transitions. [2023-12-09 15:08:03,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:08:03,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4477 transitions. [2023-12-09 15:08:03,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 279.8125) internal successors, (4477), 16 states have internal predecessors, (4477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:03,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 358.0) internal successors, (6086), 17 states have internal predecessors, (6086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:03,996 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 358.0) internal successors, (6086), 17 states have internal predecessors, (6086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:03,998 INFO L308 CegarLoopForPetriNet]: 326 programPoint places, 100 predicate places. [2023-12-09 15:08:03,998 INFO L500 AbstractCegarLoop]: Abstraction has has 426 places, 1238 transitions, 12476 flow [2023-12-09 15:08:03,999 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 272.72727272727275) internal successors, (3000), 11 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:03,999 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:08:03,999 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:08:04,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-09 15:08:04,205 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:08:04,206 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:08:04,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:08:04,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1386769392, now seen corresponding path program 1 times [2023-12-09 15:08:04,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:08:04,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435748416] [2023-12-09 15:08:04,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:08:04,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:08:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:08:04,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:08:04,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:08:04,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435748416] [2023-12-09 15:08:04,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435748416] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:08:04,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:08:04,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:08:04,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69553729] [2023-12-09 15:08:04,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:08:04,547 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:08:04,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:08:04,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:08:04,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:08:04,550 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 358 [2023-12-09 15:08:04,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 1238 transitions, 12476 flow. Second operand has 7 states, 7 states have (on average 279.14285714285717) internal successors, (1954), 7 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:04,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:08:04,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 358 [2023-12-09 15:08:04,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:08:09,404 INFO L124 PetriNetUnfolderBase]: 6775/34872 cut-off events. [2023-12-09 15:08:09,405 INFO L125 PetriNetUnfolderBase]: For 62649/71016 co-relation queries the response was YES. [2023-12-09 15:08:09,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81304 conditions, 34872 events. 6775/34872 cut-off events. For 62649/71016 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 472398 event pairs, 1519 based on Foata normal form. 82/30833 useless extension candidates. Maximal degree in co-relation 14754. Up to 5016 conditions per place. [2023-12-09 15:08:09,883 INFO L140 encePairwiseOnDemand]: 346/358 looper letters, 399 selfloop transitions, 8 changer transitions 283/1103 dead transitions. [2023-12-09 15:08:09,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 1103 transitions, 12077 flow [2023-12-09 15:08:09,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:08:09,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:08:09,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2842 transitions. [2023-12-09 15:08:09,890 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7938547486033519 [2023-12-09 15:08:09,890 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2842 transitions. [2023-12-09 15:08:09,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2842 transitions. [2023-12-09 15:08:09,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:08:09,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2842 transitions. [2023-12-09 15:08:09,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 284.2) internal successors, (2842), 10 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:09,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 358.0) internal successors, (3938), 11 states have internal predecessors, (3938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:09,903 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 358.0) internal successors, (3938), 11 states have internal predecessors, (3938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:09,905 INFO L308 CegarLoopForPetriNet]: 326 programPoint places, 106 predicate places. [2023-12-09 15:08:09,905 INFO L500 AbstractCegarLoop]: Abstraction has has 432 places, 1103 transitions, 12077 flow [2023-12-09 15:08:09,906 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 279.14285714285717) internal successors, (1954), 7 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:09,906 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:08:09,906 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:08:09,906 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 15:08:09,906 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:08:09,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:08:09,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2082155949, now seen corresponding path program 1 times [2023-12-09 15:08:09,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:08:09,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274150347] [2023-12-09 15:08:09,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:08:09,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:08:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:08:10,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:08:10,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:08:10,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274150347] [2023-12-09 15:08:10,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274150347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:08:10,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:08:10,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:08:10,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507850067] [2023-12-09 15:08:10,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:08:10,041 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:08:10,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:08:10,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:08:10,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:08:10,043 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 358 [2023-12-09 15:08:10,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 1103 transitions, 12077 flow. Second operand has 7 states, 7 states have (on average 279.7142857142857) internal successors, (1958), 7 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:10,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:08:10,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 358 [2023-12-09 15:08:10,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:08:13,675 INFO L124 PetriNetUnfolderBase]: 5188/25562 cut-off events. [2023-12-09 15:08:13,676 INFO L125 PetriNetUnfolderBase]: For 59222/67029 co-relation queries the response was YES. [2023-12-09 15:08:13,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68980 conditions, 25562 events. 5188/25562 cut-off events. For 59222/67029 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 325314 event pairs, 1010 based on Foata normal form. 76/22755 useless extension candidates. Maximal degree in co-relation 15842. Up to 4321 conditions per place. [2023-12-09 15:08:13,839 INFO L140 encePairwiseOnDemand]: 346/358 looper letters, 222 selfloop transitions, 14 changer transitions 503/1040 dead transitions. [2023-12-09 15:08:13,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 1040 transitions, 12588 flow [2023-12-09 15:08:13,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:08:13,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:08:13,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2812 transitions. [2023-12-09 15:08:13,842 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7854748603351955 [2023-12-09 15:08:13,842 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2812 transitions. [2023-12-09 15:08:13,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2812 transitions. [2023-12-09 15:08:13,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:08:13,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2812 transitions. [2023-12-09 15:08:13,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 281.2) internal successors, (2812), 10 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:13,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 358.0) internal successors, (3938), 11 states have internal predecessors, (3938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:13,997 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 358.0) internal successors, (3938), 11 states have internal predecessors, (3938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:13,998 INFO L308 CegarLoopForPetriNet]: 326 programPoint places, 113 predicate places. [2023-12-09 15:08:13,998 INFO L500 AbstractCegarLoop]: Abstraction has has 439 places, 1040 transitions, 12588 flow [2023-12-09 15:08:13,998 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 279.7142857142857) internal successors, (1958), 7 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:13,998 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:08:13,999 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:08:13,999 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-09 15:08:13,999 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:08:13,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:08:13,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1469174215, now seen corresponding path program 1 times [2023-12-09 15:08:13,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:08:13,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929573221] [2023-12-09 15:08:13,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:08:14,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:08:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:08:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:08:14,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:08:14,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929573221] [2023-12-09 15:08:14,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929573221] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:08:14,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886243564] [2023-12-09 15:08:14,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:08:14,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:08:14,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:08:14,176 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:08:14,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-09 15:08:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:08:14,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-09 15:08:14,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:08:14,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:08:14,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:08:14,901 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:08:14,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886243564] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:08:14,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:08:14,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11, 11] total 23 [2023-12-09 15:08:14,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407320220] [2023-12-09 15:08:14,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:08:14,902 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:08:14,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:08:14,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:08:14,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2023-12-09 15:08:14,905 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 358 [2023-12-09 15:08:14,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 1040 transitions, 12588 flow. Second operand has 11 states, 11 states have (on average 272.8181818181818) internal successors, (3001), 11 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:14,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:08:14,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 358 [2023-12-09 15:08:14,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:08:22,235 INFO L124 PetriNetUnfolderBase]: 10852/48233 cut-off events. [2023-12-09 15:08:22,235 INFO L125 PetriNetUnfolderBase]: For 205059/225745 co-relation queries the response was YES. [2023-12-09 15:08:22,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147642 conditions, 48233 events. 10852/48233 cut-off events. For 205059/225745 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 674462 event pairs, 3370 based on Foata normal form. 424/43422 useless extension candidates. Maximal degree in co-relation 35741. Up to 8413 conditions per place. [2023-12-09 15:08:22,592 INFO L140 encePairwiseOnDemand]: 336/358 looper letters, 346 selfloop transitions, 35 changer transitions 648/1300 dead transitions. [2023-12-09 15:08:22,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 1300 transitions, 18594 flow [2023-12-09 15:08:22,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:08:22,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:08:22,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4442 transitions. [2023-12-09 15:08:22,597 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7754888268156425 [2023-12-09 15:08:22,597 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4442 transitions. [2023-12-09 15:08:22,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4442 transitions. [2023-12-09 15:08:22,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:08:22,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4442 transitions. [2023-12-09 15:08:22,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 277.625) internal successors, (4442), 16 states have internal predecessors, (4442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:22,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 358.0) internal successors, (6086), 17 states have internal predecessors, (6086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:22,608 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 358.0) internal successors, (6086), 17 states have internal predecessors, (6086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:22,609 INFO L308 CegarLoopForPetriNet]: 326 programPoint places, 128 predicate places. [2023-12-09 15:08:22,609 INFO L500 AbstractCegarLoop]: Abstraction has has 454 places, 1300 transitions, 18594 flow [2023-12-09 15:08:22,610 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 272.8181818181818) internal successors, (3001), 11 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:22,610 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:08:22,610 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:08:22,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-09 15:08:22,814 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:08:22,815 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:08:22,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:08:22,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1123822032, now seen corresponding path program 1 times [2023-12-09 15:08:22,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:08:22,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374333112] [2023-12-09 15:08:22,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:08:22,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:08:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:08:23,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:08:23,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:08:23,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374333112] [2023-12-09 15:08:23,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374333112] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:08:23,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841282057] [2023-12-09 15:08:23,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:08:23,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:08:23,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:08:23,181 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:08:23,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-09 15:08:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:08:23,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 15:08:23,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:08:23,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:08:23,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:08:24,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:08:24,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841282057] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:08:24,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:08:24,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 31 [2023-12-09 15:08:24,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397915312] [2023-12-09 15:08:24,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:08:24,095 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-09 15:08:24,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:08:24,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-09 15:08:24,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2023-12-09 15:08:24,100 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 358 [2023-12-09 15:08:24,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 1300 transitions, 18594 flow. Second operand has 31 states, 31 states have (on average 232.70967741935485) internal successors, (7214), 31 states have internal predecessors, (7214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:24,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:08:24,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 358 [2023-12-09 15:08:24,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:08:39,943 INFO L124 PetriNetUnfolderBase]: 18954/85766 cut-off events. [2023-12-09 15:08:39,944 INFO L125 PetriNetUnfolderBase]: For 461990/498484 co-relation queries the response was YES. [2023-12-09 15:08:40,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277557 conditions, 85766 events. 18954/85766 cut-off events. For 461990/498484 co-relation queries the response was YES. Maximal size of possible extension queue 1688. Compared 1316370 event pairs, 5176 based on Foata normal form. 552/76799 useless extension candidates. Maximal degree in co-relation 42455. Up to 15120 conditions per place. [2023-12-09 15:08:40,760 INFO L140 encePairwiseOnDemand]: 313/358 looper letters, 753 selfloop transitions, 94 changer transitions 1031/2106 dead transitions. [2023-12-09 15:08:40,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 2106 transitions, 36155 flow [2023-12-09 15:08:40,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-09 15:08:40,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-12-09 15:08:40,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 12750 transitions. [2023-12-09 15:08:40,794 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6475368207211782 [2023-12-09 15:08:40,794 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 12750 transitions. [2023-12-09 15:08:40,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 12750 transitions. [2023-12-09 15:08:40,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:08:40,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 12750 transitions. [2023-12-09 15:08:40,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 231.8181818181818) internal successors, (12750), 55 states have internal predecessors, (12750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:40,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 358.0) internal successors, (20048), 56 states have internal predecessors, (20048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:40,854 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 358.0) internal successors, (20048), 56 states have internal predecessors, (20048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:40,868 INFO L308 CegarLoopForPetriNet]: 326 programPoint places, 182 predicate places. [2023-12-09 15:08:40,868 INFO L500 AbstractCegarLoop]: Abstraction has has 508 places, 2106 transitions, 36155 flow [2023-12-09 15:08:40,869 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 232.70967741935485) internal successors, (7214), 31 states have internal predecessors, (7214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:40,869 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:08:40,870 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:08:40,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-09 15:08:41,075 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:08:41,075 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:08:41,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:08:41,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1919276634, now seen corresponding path program 1 times [2023-12-09 15:08:41,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:08:41,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200054038] [2023-12-09 15:08:41,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:08:41,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:08:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:08:41,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-09 15:08:41,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:08:41,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200054038] [2023-12-09 15:08:41,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200054038] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:08:41,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:08:41,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:08:41,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809963226] [2023-12-09 15:08:41,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:08:41,192 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:08:41,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:08:41,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:08:41,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:08:41,193 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 358 [2023-12-09 15:08:41,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 2106 transitions, 36155 flow. Second operand has 7 states, 7 states have (on average 280.2857142857143) internal successors, (1962), 7 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:41,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:08:41,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 358 [2023-12-09 15:08:41,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:08:53,203 INFO L124 PetriNetUnfolderBase]: 13610/57001 cut-off events. [2023-12-09 15:08:53,203 INFO L125 PetriNetUnfolderBase]: For 395134/430316 co-relation queries the response was YES. [2023-12-09 15:08:53,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210324 conditions, 57001 events. 13610/57001 cut-off events. For 395134/430316 co-relation queries the response was YES. Maximal size of possible extension queue 1104. Compared 793663 event pairs, 3533 based on Foata normal form. 498/51291 useless extension candidates. Maximal degree in co-relation 42122. Up to 11308 conditions per place. [2023-12-09 15:08:53,694 INFO L140 encePairwiseOnDemand]: 346/358 looper letters, 334 selfloop transitions, 14 changer transitions 1114/1887 dead transitions. [2023-12-09 15:08:53,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 1887 transitions, 34351 flow [2023-12-09 15:08:53,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:08:53,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:08:53,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2827 transitions. [2023-12-09 15:08:53,697 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7896648044692738 [2023-12-09 15:08:53,697 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2827 transitions. [2023-12-09 15:08:53,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2827 transitions. [2023-12-09 15:08:53,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:08:53,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2827 transitions. [2023-12-09 15:08:53,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 282.7) internal successors, (2827), 10 states have internal predecessors, (2827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:53,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 358.0) internal successors, (3938), 11 states have internal predecessors, (3938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:53,702 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 358.0) internal successors, (3938), 11 states have internal predecessors, (3938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:53,702 INFO L308 CegarLoopForPetriNet]: 326 programPoint places, 188 predicate places. [2023-12-09 15:08:53,702 INFO L500 AbstractCegarLoop]: Abstraction has has 514 places, 1887 transitions, 34351 flow [2023-12-09 15:08:53,702 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 280.2857142857143) internal successors, (1962), 7 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:53,703 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:08:53,703 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:08:53,703 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-09 15:08:53,703 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:08:53,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:08:53,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1131089063, now seen corresponding path program 2 times [2023-12-09 15:08:53,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:08:53,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203010730] [2023-12-09 15:08:53,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:08:53,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:08:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:08:54,091 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:08:54,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:08:54,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203010730] [2023-12-09 15:08:54,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203010730] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:08:54,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493269349] [2023-12-09 15:08:54,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:08:54,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:08:54,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:08:54,092 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:08:54,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-09 15:08:54,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-09 15:08:54,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:08:54,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-09 15:08:54,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:08:54,350 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-09 15:08:54,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:08:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-09 15:08:54,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493269349] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:08:54,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:08:54,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7, 7] total 23 [2023-12-09 15:08:54,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169050409] [2023-12-09 15:08:54,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:08:54,590 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-09 15:08:54,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:08:54,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-09 15:08:54,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2023-12-09 15:08:54,594 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 358 [2023-12-09 15:08:54,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 1887 transitions, 34351 flow. Second operand has 23 states, 23 states have (on average 229.65217391304347) internal successors, (5282), 23 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:08:54,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:08:54,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 358 [2023-12-09 15:08:54,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand