/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:09:47,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:09:47,867 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 16:09:47,889 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:09:47,889 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:09:47,890 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:09:47,890 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:09:47,891 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:09:47,891 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:09:47,891 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:09:47,892 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:09:47,892 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:09:47,892 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:09:47,893 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:09:47,893 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:09:47,893 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:09:47,894 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:09:47,894 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:09:47,894 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:09:47,895 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:09:47,895 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:09:47,896 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:09:47,896 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:09:47,896 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:09:47,897 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:09:47,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:09:47,897 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:09:47,897 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:09:47,898 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:09:47,898 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:09:47,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:09:47,898 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:09:47,899 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:09:48,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:09:48,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:09:48,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:09:48,146 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:09:48,147 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:09:48,148 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2023-11-17 16:09:49,343 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:09:49,534 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:09:49,534 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2023-11-17 16:09:49,541 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9675cbb80/c62fa5bda14643f194ed6b8826299e1d/FLAGeb4cfcc0e [2023-11-17 16:09:49,558 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9675cbb80/c62fa5bda14643f194ed6b8826299e1d [2023-11-17 16:09:49,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:09:49,562 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:09:49,565 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:09:49,565 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:09:49,569 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:09:49,570 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:09:49" (1/1) ... [2023-11-17 16:09:49,571 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb63700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:09:49, skipping insertion in model container [2023-11-17 16:09:49,571 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:09:49" (1/1) ... [2023-11-17 16:09:49,594 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:09:49,748 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/popl20-bad-threaded-sum-2.wvr.c[2502,2515] [2023-11-17 16:09:49,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:09:49,760 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:09:49,777 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/popl20-bad-threaded-sum-2.wvr.c[2502,2515] [2023-11-17 16:09:49,778 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:09:49,784 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:09:49,784 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:09:49,790 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:09:49,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:09:49 WrapperNode [2023-11-17 16:09:49,791 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:09:49,792 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:09:49,792 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:09:49,792 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:09:49,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:09:49" (1/1) ... [2023-11-17 16:09:49,803 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:09:49" (1/1) ... [2023-11-17 16:09:49,818 INFO L138 Inliner]: procedures = 21, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 60 [2023-11-17 16:09:49,818 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:09:49,819 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:09:49,819 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:09:49,819 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:09:49,826 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:09:49" (1/1) ... [2023-11-17 16:09:49,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:09:49" (1/1) ... [2023-11-17 16:09:49,828 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:09:49" (1/1) ... [2023-11-17 16:09:49,828 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:09:49" (1/1) ... [2023-11-17 16:09:49,832 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:09:49" (1/1) ... [2023-11-17 16:09:49,835 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:09:49" (1/1) ... [2023-11-17 16:09:49,836 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:09:49" (1/1) ... [2023-11-17 16:09:49,837 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:09:49" (1/1) ... [2023-11-17 16:09:49,839 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:09:49,840 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:09:49,840 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:09:49,840 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:09:49,848 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:09:49" (1/1) ... [2023-11-17 16:09:49,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:09:49,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:09:49,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 16:09:49,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 16:09:49,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:09:49,910 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:09:49,910 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:09:49,910 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:09:49,911 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:09:49,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:09:49,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:09:49,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:09:49,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 16:09:49,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 16:09:49,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:09:49,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:09:49,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:09:49,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:09:49,913 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 16:09:50,021 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:09:50,023 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:09:50,235 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:09:50,288 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:09:50,288 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 16:09:50,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:09:50 BoogieIcfgContainer [2023-11-17 16:09:50,289 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:09:50,291 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:09:50,291 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:09:50,294 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:09:50,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:09:49" (1/3) ... [2023-11-17 16:09:50,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e1aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:09:50, skipping insertion in model container [2023-11-17 16:09:50,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:09:49" (2/3) ... [2023-11-17 16:09:50,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e1aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:09:50, skipping insertion in model container [2023-11-17 16:09:50,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:09:50" (3/3) ... [2023-11-17 16:09:50,296 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-threaded-sum-2.wvr.c [2023-11-17 16:09:50,311 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:09:50,311 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:09:50,311 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:09:50,384 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 16:09:50,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 88 transitions, 190 flow [2023-11-17 16:09:50,485 INFO L124 PetriNetUnfolderBase]: 6/86 cut-off events. [2023-11-17 16:09:50,486 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 16:09:50,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 86 events. 6/86 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-11-17 16:09:50,490 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 88 transitions, 190 flow [2023-11-17 16:09:50,493 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 77 transitions, 166 flow [2023-11-17 16:09:50,495 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:09:50,507 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 77 transitions, 166 flow [2023-11-17 16:09:50,509 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 77 transitions, 166 flow [2023-11-17 16:09:50,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 77 transitions, 166 flow [2023-11-17 16:09:50,551 INFO L124 PetriNetUnfolderBase]: 6/77 cut-off events. [2023-11-17 16:09:50,551 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 16:09:50,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 77 events. 6/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-11-17 16:09:50,552 INFO L119 LiptonReduction]: Number of co-enabled transitions 462 [2023-11-17 16:09:52,724 INFO L134 LiptonReduction]: Checked pairs total: 659 [2023-11-17 16:09:52,724 INFO L136 LiptonReduction]: Total number of compositions: 72 [2023-11-17 16:09:52,737 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:09:52,743 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@a91c93a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:09:52,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 16:09:52,748 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:09:52,748 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2023-11-17 16:09:52,748 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 16:09:52,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:09:52,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:09:52,749 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:09:52,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:09:52,753 INFO L85 PathProgramCache]: Analyzing trace with hash 59871768, now seen corresponding path program 1 times [2023-11-17 16:09:52,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:09:52,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623398225] [2023-11-17 16:09:52,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:09:52,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:09:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:09:53,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:09:53,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:09:53,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623398225] [2023-11-17 16:09:53,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623398225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:09:53,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:09:53,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:09:53,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191441196] [2023-11-17 16:09:53,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:09:53,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:09:53,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:09:53,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:09:53,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:09:53,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2023-11-17 16:09:53,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:53,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:09:53,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2023-11-17 16:09:53,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:09:53,380 INFO L124 PetriNetUnfolderBase]: 93/164 cut-off events. [2023-11-17 16:09:53,380 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-17 16:09:53,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 164 events. 93/164 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 444 event pairs, 9 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 280. Up to 85 conditions per place. [2023-11-17 16:09:53,383 INFO L140 encePairwiseOnDemand]: 156/160 looper letters, 30 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2023-11-17 16:09:53,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 33 transitions, 150 flow [2023-11-17 16:09:53,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:09:53,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:09:53,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 298 transitions. [2023-11-17 16:09:53,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465625 [2023-11-17 16:09:53,404 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 298 transitions. [2023-11-17 16:09:53,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 298 transitions. [2023-11-17 16:09:53,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:09:53,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 298 transitions. [2023-11-17 16:09:53,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:53,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:53,415 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:53,417 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 4 states and 298 transitions. [2023-11-17 16:09:53,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 33 transitions, 150 flow [2023-11-17 16:09:53,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 33 transitions, 138 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 16:09:53,421 INFO L231 Difference]: Finished difference. Result has 22 places, 18 transitions, 52 flow [2023-11-17 16:09:53,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=52, PETRI_PLACES=22, PETRI_TRANSITIONS=18} [2023-11-17 16:09:53,425 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 0 predicate places. [2023-11-17 16:09:53,425 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 18 transitions, 52 flow [2023-11-17 16:09:53,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:53,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:09:53,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:09:53,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:09:53,426 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:09:53,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:09:53,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1357457851, now seen corresponding path program 1 times [2023-11-17 16:09:53,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:09:53,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892158428] [2023-11-17 16:09:53,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:09:53,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:09:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:09:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:09:53,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:09:53,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892158428] [2023-11-17 16:09:53,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892158428] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:09:53,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:09:53,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:09:53,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335516429] [2023-11-17 16:09:53,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:09:53,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:09:53,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:09:53,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:09:53,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:09:53,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 160 [2023-11-17 16:09:53,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 18 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:53,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:09:53,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 160 [2023-11-17 16:09:53,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:09:53,783 INFO L124 PetriNetUnfolderBase]: 101/178 cut-off events. [2023-11-17 16:09:53,783 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-11-17 16:09:53,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 178 events. 101/178 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 487 event pairs, 13 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 125. Up to 159 conditions per place. [2023-11-17 16:09:53,787 INFO L140 encePairwiseOnDemand]: 155/160 looper letters, 25 selfloop transitions, 5 changer transitions 0/30 dead transitions. [2023-11-17 16:09:53,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 30 transitions, 144 flow [2023-11-17 16:09:53,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:09:53,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:09:53,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 282 transitions. [2023-11-17 16:09:53,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440625 [2023-11-17 16:09:53,790 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 282 transitions. [2023-11-17 16:09:53,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 282 transitions. [2023-11-17 16:09:53,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:09:53,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 282 transitions. [2023-11-17 16:09:53,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:53,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:53,796 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:53,797 INFO L175 Difference]: Start difference. First operand has 22 places, 18 transitions, 52 flow. Second operand 4 states and 282 transitions. [2023-11-17 16:09:53,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 30 transitions, 144 flow [2023-11-17 16:09:53,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 30 transitions, 138 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 16:09:53,798 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 80 flow [2023-11-17 16:09:53,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=25, PETRI_TRANSITIONS=22} [2023-11-17 16:09:53,799 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 3 predicate places. [2023-11-17 16:09:53,800 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 80 flow [2023-11-17 16:09:53,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:53,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:09:53,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:09:53,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 16:09:53,801 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:09:53,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:09:53,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1211954969, now seen corresponding path program 2 times [2023-11-17 16:09:53,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:09:53,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712367810] [2023-11-17 16:09:53,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:09:53,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:09:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:09:54,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:09:54,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:09:54,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712367810] [2023-11-17 16:09:54,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712367810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:09:54,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:09:54,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:09:54,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941851631] [2023-11-17 16:09:54,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:09:54,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:09:54,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:09:54,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:09:54,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:09:54,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 160 [2023-11-17 16:09:54,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:54,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:09:54,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 160 [2023-11-17 16:09:54,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:09:54,095 INFO L124 PetriNetUnfolderBase]: 133/232 cut-off events. [2023-11-17 16:09:54,095 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2023-11-17 16:09:54,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 232 events. 133/232 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 729 event pairs, 25 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 210. Up to 165 conditions per place. [2023-11-17 16:09:54,097 INFO L140 encePairwiseOnDemand]: 154/160 looper letters, 34 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2023-11-17 16:09:54,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 40 transitions, 215 flow [2023-11-17 16:09:54,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:09:54,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:09:54,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 354 transitions. [2023-11-17 16:09:54,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425 [2023-11-17 16:09:54,099 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 354 transitions. [2023-11-17 16:09:54,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 354 transitions. [2023-11-17 16:09:54,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:09:54,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 354 transitions. [2023-11-17 16:09:54,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.8) internal successors, (354), 5 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:54,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:54,102 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:54,103 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 80 flow. Second operand 5 states and 354 transitions. [2023-11-17 16:09:54,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 40 transitions, 215 flow [2023-11-17 16:09:54,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 40 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 16:09:54,104 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 101 flow [2023-11-17 16:09:54,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-11-17 16:09:54,105 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 8 predicate places. [2023-11-17 16:09:54,105 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 101 flow [2023-11-17 16:09:54,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:54,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:09:54,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:09:54,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 16:09:54,106 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:09:54,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:09:54,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1848798363, now seen corresponding path program 3 times [2023-11-17 16:09:54,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:09:54,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242875121] [2023-11-17 16:09:54,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:09:54,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:09:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:09:54,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:09:54,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:09:54,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242875121] [2023-11-17 16:09:54,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242875121] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:09:54,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440041972] [2023-11-17 16:09:54,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:09:54,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:09:54,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:09:54,721 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) [2023-11-17 16:09:54,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 16:09:54,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 16:09:54,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:09:54,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 16:09:54,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:09:55,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:09:55,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:09:55,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:09:55,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440041972] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:09:55,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:09:55,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 18 [2023-11-17 16:09:55,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640398588] [2023-11-17 16:09:55,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:09:55,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 16:09:55,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:09:55,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 16:09:55,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-17 16:09:55,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 160 [2023-11-17 16:09:55,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 101 flow. Second operand has 8 states, 8 states have (on average 58.875) internal successors, (471), 8 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:55,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:09:55,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 160 [2023-11-17 16:09:55,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:09:56,153 INFO L124 PetriNetUnfolderBase]: 277/481 cut-off events. [2023-11-17 16:09:56,154 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2023-11-17 16:09:56,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 481 events. 277/481 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1909 event pairs, 1 based on Foata normal form. 1/482 useless extension candidates. Maximal degree in co-relation 505. Up to 111 conditions per place. [2023-11-17 16:09:56,157 INFO L140 encePairwiseOnDemand]: 151/160 looper letters, 64 selfloop transitions, 42 changer transitions 11/117 dead transitions. [2023-11-17 16:09:56,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 117 transitions, 672 flow [2023-11-17 16:09:56,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 16:09:56,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 16:09:56,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1020 transitions. [2023-11-17 16:09:56,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2023-11-17 16:09:56,161 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1020 transitions. [2023-11-17 16:09:56,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1020 transitions. [2023-11-17 16:09:56,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:09:56,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1020 transitions. [2023-11-17 16:09:56,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 63.75) internal successors, (1020), 16 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:56,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 160.0) internal successors, (2720), 17 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:56,169 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 160.0) internal successors, (2720), 17 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:56,169 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 101 flow. Second operand 16 states and 1020 transitions. [2023-11-17 16:09:56,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 117 transitions, 672 flow [2023-11-17 16:09:56,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 117 transitions, 658 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 16:09:56,173 INFO L231 Difference]: Finished difference. Result has 49 places, 63 transitions, 399 flow [2023-11-17 16:09:56,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=399, PETRI_PLACES=49, PETRI_TRANSITIONS=63} [2023-11-17 16:09:56,174 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 27 predicate places. [2023-11-17 16:09:56,174 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 63 transitions, 399 flow [2023-11-17 16:09:56,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 58.875) internal successors, (471), 8 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:56,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:09:56,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:09:56,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 16:09:56,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:09:56,382 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:09:56,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:09:56,382 INFO L85 PathProgramCache]: Analyzing trace with hash 902413345, now seen corresponding path program 4 times [2023-11-17 16:09:56,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:09:56,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614389347] [2023-11-17 16:09:56,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:09:56,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:09:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:09:56,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:09:56,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:09:56,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614389347] [2023-11-17 16:09:56,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614389347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:09:56,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:09:56,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:09:56,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835499276] [2023-11-17 16:09:56,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:09:56,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:09:56,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:09:56,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:09:56,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:09:56,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2023-11-17 16:09:56,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 63 transitions, 399 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:56,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:09:56,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2023-11-17 16:09:56,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:09:56,607 INFO L124 PetriNetUnfolderBase]: 278/479 cut-off events. [2023-11-17 16:09:56,607 INFO L125 PetriNetUnfolderBase]: For 926/926 co-relation queries the response was YES. [2023-11-17 16:09:56,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1898 conditions, 479 events. 278/479 cut-off events. For 926/926 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1779 event pairs, 10 based on Foata normal form. 20/499 useless extension candidates. Maximal degree in co-relation 1874. Up to 266 conditions per place. [2023-11-17 16:09:56,612 INFO L140 encePairwiseOnDemand]: 155/160 looper letters, 87 selfloop transitions, 20 changer transitions 0/107 dead transitions. [2023-11-17 16:09:56,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 107 transitions, 878 flow [2023-11-17 16:09:56,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:09:56,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:09:56,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 367 transitions. [2023-11-17 16:09:56,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45875 [2023-11-17 16:09:56,614 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 367 transitions. [2023-11-17 16:09:56,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 367 transitions. [2023-11-17 16:09:56,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:09:56,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 367 transitions. [2023-11-17 16:09:56,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:56,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:56,618 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:56,618 INFO L175 Difference]: Start difference. First operand has 49 places, 63 transitions, 399 flow. Second operand 5 states and 367 transitions. [2023-11-17 16:09:56,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 107 transitions, 878 flow [2023-11-17 16:09:56,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 107 transitions, 794 flow, removed 37 selfloop flow, removed 4 redundant places. [2023-11-17 16:09:56,628 INFO L231 Difference]: Finished difference. Result has 51 places, 73 transitions, 502 flow [2023-11-17 16:09:56,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=502, PETRI_PLACES=51, PETRI_TRANSITIONS=73} [2023-11-17 16:09:56,630 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 29 predicate places. [2023-11-17 16:09:56,630 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 73 transitions, 502 flow [2023-11-17 16:09:56,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:56,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:09:56,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:09:56,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 16:09:56,631 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:09:56,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:09:56,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1460168555, now seen corresponding path program 1 times [2023-11-17 16:09:56,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:09:56,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582928301] [2023-11-17 16:09:56,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:09:56,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:09:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:09:57,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:09:57,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:09:57,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582928301] [2023-11-17 16:09:57,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582928301] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:09:57,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164232091] [2023-11-17 16:09:57,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:09:57,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:09:57,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:09:57,264 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) [2023-11-17 16:09:57,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 16:09:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:09:57,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-17 16:09:57,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:09:57,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:09:57,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:09:58,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:09:58,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164232091] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:09:58,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:09:58,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-11-17 16:09:58,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895868808] [2023-11-17 16:09:58,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:09:58,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 16:09:58,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:09:58,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 16:09:58,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2023-11-17 16:09:58,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 160 [2023-11-17 16:09:58,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 73 transitions, 502 flow. Second operand has 23 states, 23 states have (on average 59.21739130434783) internal successors, (1362), 23 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:58,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:09:58,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 160 [2023-11-17 16:09:58,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:10:05,584 INFO L124 PetriNetUnfolderBase]: 869/1529 cut-off events. [2023-11-17 16:10:05,584 INFO L125 PetriNetUnfolderBase]: For 3992/3992 co-relation queries the response was YES. [2023-11-17 16:10:05,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6112 conditions, 1529 events. 869/1529 cut-off events. For 3992/3992 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7944 event pairs, 4 based on Foata normal form. 13/1494 useless extension candidates. Maximal degree in co-relation 4777. Up to 283 conditions per place. [2023-11-17 16:10:05,596 INFO L140 encePairwiseOnDemand]: 150/160 looper letters, 145 selfloop transitions, 191 changer transitions 120/456 dead transitions. [2023-11-17 16:10:05,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 456 transitions, 3568 flow [2023-11-17 16:10:05,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-11-17 16:10:05,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2023-11-17 16:10:05,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 4083 transitions. [2023-11-17 16:10:05,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3866477272727273 [2023-11-17 16:10:05,607 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 4083 transitions. [2023-11-17 16:10:05,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 4083 transitions. [2023-11-17 16:10:05,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:10:05,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 4083 transitions. [2023-11-17 16:10:05,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 61.86363636363637) internal successors, (4083), 66 states have internal predecessors, (4083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:10:05,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 160.0) internal successors, (10720), 67 states have internal predecessors, (10720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:10:05,659 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 160.0) internal successors, (10720), 67 states have internal predecessors, (10720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:10:05,659 INFO L175 Difference]: Start difference. First operand has 51 places, 73 transitions, 502 flow. Second operand 66 states and 4083 transitions. [2023-11-17 16:10:05,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 456 transitions, 3568 flow [2023-11-17 16:10:05,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 456 transitions, 3522 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-17 16:10:05,684 INFO L231 Difference]: Finished difference. Result has 156 places, 246 transitions, 2470 flow [2023-11-17 16:10:05,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=2470, PETRI_PLACES=156, PETRI_TRANSITIONS=246} [2023-11-17 16:10:05,686 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 134 predicate places. [2023-11-17 16:10:05,686 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 246 transitions, 2470 flow [2023-11-17 16:10:05,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 59.21739130434783) internal successors, (1362), 23 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:10:05,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:10:05,687 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:10:05,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 16:10:05,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-17 16:10:05,893 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:10:05,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:10:05,894 INFO L85 PathProgramCache]: Analyzing trace with hash 921255773, now seen corresponding path program 2 times [2023-11-17 16:10:05,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:10:05,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771249019] [2023-11-17 16:10:05,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:10:05,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:10:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:10:06,851 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:10:06,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:10:06,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771249019] [2023-11-17 16:10:06,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771249019] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:10:06,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320986303] [2023-11-17 16:10:06,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:10:06,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:10:06,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:10:06,853 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) [2023-11-17 16:10:06,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 16:10:06,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:10:06,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:10:06,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-17 16:10:06,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:10:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:10:07,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:10:08,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:10:08,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320986303] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:10:08,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:10:08,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 25 [2023-11-17 16:10:08,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553893484] [2023-11-17 16:10:08,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:10:08,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-17 16:10:08,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:10:08,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-17 16:10:08,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2023-11-17 16:10:08,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 160 [2023-11-17 16:10:08,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 246 transitions, 2470 flow. Second operand has 27 states, 27 states have (on average 59.111111111111114) internal successors, (1596), 27 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:10:08,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:10:08,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 160 [2023-11-17 16:10:08,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:10:18,317 INFO L124 PetriNetUnfolderBase]: 1270/2272 cut-off events. [2023-11-17 16:10:18,318 INFO L125 PetriNetUnfolderBase]: For 32038/32038 co-relation queries the response was YES. [2023-11-17 16:10:18,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13298 conditions, 2272 events. 1270/2272 cut-off events. For 32038/32038 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 13061 event pairs, 0 based on Foata normal form. 11/2283 useless extension candidates. Maximal degree in co-relation 13061. Up to 490 conditions per place. [2023-11-17 16:10:18,338 INFO L140 encePairwiseOnDemand]: 149/160 looper letters, 255 selfloop transitions, 390 changer transitions 57/702 dead transitions. [2023-11-17 16:10:18,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 702 transitions, 8163 flow [2023-11-17 16:10:18,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-11-17 16:10:18,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-11-17 16:10:18,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 4161 transitions. [2023-11-17 16:10:18,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38815298507462687 [2023-11-17 16:10:18,347 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 4161 transitions. [2023-11-17 16:10:18,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 4161 transitions. [2023-11-17 16:10:18,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:10:18,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 4161 transitions. [2023-11-17 16:10:18,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 62.1044776119403) internal successors, (4161), 67 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:10:18,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 160.0) internal successors, (10880), 68 states have internal predecessors, (10880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:10:18,368 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 160.0) internal successors, (10880), 68 states have internal predecessors, (10880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:10:18,368 INFO L175 Difference]: Start difference. First operand has 156 places, 246 transitions, 2470 flow. Second operand 67 states and 4161 transitions. [2023-11-17 16:10:18,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 702 transitions, 8163 flow [2023-11-17 16:10:18,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 702 transitions, 7706 flow, removed 217 selfloop flow, removed 17 redundant places. [2023-11-17 16:10:18,536 INFO L231 Difference]: Finished difference. Result has 205 places, 485 transitions, 6091 flow [2023-11-17 16:10:18,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=2287, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=6091, PETRI_PLACES=205, PETRI_TRANSITIONS=485} [2023-11-17 16:10:18,537 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 183 predicate places. [2023-11-17 16:10:18,537 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 485 transitions, 6091 flow [2023-11-17 16:10:18,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 59.111111111111114) internal successors, (1596), 27 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:10:18,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:10:18,538 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:10:18,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 16:10:18,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:10:18,745 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:10:18,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:10:18,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1050131598, now seen corresponding path program 3 times [2023-11-17 16:10:18,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:10:18,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291474125] [2023-11-17 16:10:18,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:10:18,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:10:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:10:18,904 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:10:18,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:10:18,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291474125] [2023-11-17 16:10:18,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291474125] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:10:18,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967619427] [2023-11-17 16:10:18,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:10:18,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:10:18,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:10:18,913 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) [2023-11-17 16:10:18,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 16:10:18,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-17 16:10:18,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:10:18,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:10:18,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:10:19,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:10:19,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:10:19,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:10:19,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967619427] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:10:19,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:10:19,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 10 [2023-11-17 16:10:19,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378976366] [2023-11-17 16:10:19,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:10:19,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 16:10:19,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:10:19,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 16:10:19,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-17 16:10:19,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 160 [2023-11-17 16:10:19,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 485 transitions, 6091 flow. Second operand has 10 states, 10 states have (on average 64.7) internal successors, (647), 10 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:10:19,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:10:19,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 160 [2023-11-17 16:10:19,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:10:19,649 INFO L124 PetriNetUnfolderBase]: 1246/2181 cut-off events. [2023-11-17 16:10:19,650 INFO L125 PetriNetUnfolderBase]: For 34757/34757 co-relation queries the response was YES. [2023-11-17 16:10:19,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13614 conditions, 2181 events. 1246/2181 cut-off events. For 34757/34757 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 12034 event pairs, 22 based on Foata normal form. 36/2217 useless extension candidates. Maximal degree in co-relation 13421. Up to 608 conditions per place. [2023-11-17 16:10:19,669 INFO L140 encePairwiseOnDemand]: 152/160 looper letters, 233 selfloop transitions, 371 changer transitions 0/604 dead transitions. [2023-11-17 16:10:19,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 604 transitions, 8476 flow [2023-11-17 16:10:19,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 16:10:19,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 16:10:19,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 853 transitions. [2023-11-17 16:10:19,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41009615384615383 [2023-11-17 16:10:19,672 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 853 transitions. [2023-11-17 16:10:19,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 853 transitions. [2023-11-17 16:10:19,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:10:19,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 853 transitions. [2023-11-17 16:10:19,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 65.61538461538461) internal successors, (853), 13 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:10:19,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 160.0) internal successors, (2240), 14 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:10:19,676 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 160.0) internal successors, (2240), 14 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:10:19,676 INFO L175 Difference]: Start difference. First operand has 205 places, 485 transitions, 6091 flow. Second operand 13 states and 853 transitions. [2023-11-17 16:10:19,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 604 transitions, 8476 flow [2023-11-17 16:10:19,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 604 transitions, 7706 flow, removed 369 selfloop flow, removed 15 redundant places. [2023-11-17 16:10:19,845 INFO L231 Difference]: Finished difference. Result has 196 places, 562 transitions, 7738 flow [2023-11-17 16:10:19,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=5211, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7738, PETRI_PLACES=196, PETRI_TRANSITIONS=562} [2023-11-17 16:10:19,846 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 174 predicate places. [2023-11-17 16:10:19,846 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 562 transitions, 7738 flow [2023-11-17 16:10:19,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 64.7) internal successors, (647), 10 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:10:19,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:10:19,846 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:10:19,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 16:10:20,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:10:20,053 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:10:20,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:10:20,053 INFO L85 PathProgramCache]: Analyzing trace with hash 868764568, now seen corresponding path program 4 times [2023-11-17 16:10:20,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:10:20,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818057626] [2023-11-17 16:10:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:10:20,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:10:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:10:21,076 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:10:21,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:10:21,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818057626] [2023-11-17 16:10:21,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818057626] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:10:21,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013023115] [2023-11-17 16:10:21,077 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:10:21,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:10:21,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:10:21,079 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) [2023-11-17 16:10:21,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 16:10:21,198 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:10:21,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:10:21,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-17 16:10:21,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:10:21,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:10:21,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:10:22,307 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:10:22,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013023115] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:10:22,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:10:22,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-11-17 16:10:22,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554607588] [2023-11-17 16:10:22,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:10:22,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-17 16:10:22,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:10:22,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-17 16:10:22,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2023-11-17 16:10:22,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 160 [2023-11-17 16:10:22,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 562 transitions, 7738 flow. Second operand has 29 states, 29 states have (on average 58.96551724137931) internal successors, (1710), 29 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:10:22,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:10:22,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 160 [2023-11-17 16:10:22,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:10:48,626 INFO L124 PetriNetUnfolderBase]: 2382/4193 cut-off events. [2023-11-17 16:10:48,626 INFO L125 PetriNetUnfolderBase]: For 44655/44655 co-relation queries the response was YES. [2023-11-17 16:10:48,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28788 conditions, 4193 events. 2382/4193 cut-off events. For 44655/44655 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 26632 event pairs, 14 based on Foata normal form. 18/4211 useless extension candidates. Maximal degree in co-relation 28111. Up to 844 conditions per place. [2023-11-17 16:10:48,713 INFO L140 encePairwiseOnDemand]: 150/160 looper letters, 344 selfloop transitions, 871 changer transitions 103/1318 dead transitions. [2023-11-17 16:10:48,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 1318 transitions, 19945 flow [2023-11-17 16:10:48,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-11-17 16:10:48,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2023-11-17 16:10:48,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 5635 transitions. [2023-11-17 16:10:48,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870192307692308 [2023-11-17 16:10:48,729 INFO L72 ComplementDD]: Start complementDD. Operand 91 states and 5635 transitions. [2023-11-17 16:10:48,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 5635 transitions. [2023-11-17 16:10:48,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:10:48,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 91 states and 5635 transitions. [2023-11-17 16:10:48,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 92 states, 91 states have (on average 61.92307692307692) internal successors, (5635), 91 states have internal predecessors, (5635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:10:48,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 92 states, 92 states have (on average 160.0) internal successors, (14720), 92 states have internal predecessors, (14720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:10:48,777 INFO L81 ComplementDD]: Finished complementDD. Result has 92 states, 92 states have (on average 160.0) internal successors, (14720), 92 states have internal predecessors, (14720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:10:48,778 INFO L175 Difference]: Start difference. First operand has 196 places, 562 transitions, 7738 flow. Second operand 91 states and 5635 transitions. [2023-11-17 16:10:48,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 1318 transitions, 19945 flow [2023-11-17 16:10:49,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 1318 transitions, 19415 flow, removed 235 selfloop flow, removed 9 redundant places. [2023-11-17 16:10:49,177 INFO L231 Difference]: Finished difference. Result has 313 places, 1015 transitions, 16720 flow [2023-11-17 16:10:49,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=7492, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=457, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=91, PETRI_FLOW=16720, PETRI_PLACES=313, PETRI_TRANSITIONS=1015} [2023-11-17 16:10:49,178 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 291 predicate places. [2023-11-17 16:10:49,178 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 1015 transitions, 16720 flow [2023-11-17 16:10:49,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 58.96551724137931) internal successors, (1710), 29 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:10:49,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:10:49,179 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:10:49,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 16:10:49,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:10:49,385 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:10:49,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:10:49,385 INFO L85 PathProgramCache]: Analyzing trace with hash 705128672, now seen corresponding path program 5 times [2023-11-17 16:10:49,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:10:49,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593737836] [2023-11-17 16:10:49,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:10:49,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:10:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:10:50,407 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:10:50,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:10:50,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593737836] [2023-11-17 16:10:50,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593737836] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:10:50,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892617829] [2023-11-17 16:10:50,408 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:10:50,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:10:50,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:10:50,409 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) [2023-11-17 16:10:50,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 16:10:50,523 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 16:10:50,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:10:50,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-17 16:10:50,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:10:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:10:51,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:10:52,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:10:52,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892617829] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:10:52,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:10:52,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2023-11-17 16:10:52,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894443858] [2023-11-17 16:10:52,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:10:52,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-17 16:10:52,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:10:52,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-17 16:10:52,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2023-11-17 16:10:52,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 160 [2023-11-17 16:10:52,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 1015 transitions, 16720 flow. Second operand has 28 states, 28 states have (on average 58.892857142857146) internal successors, (1649), 28 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:10:52,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:10:52,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 160 [2023-11-17 16:10:52,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:11:25,671 INFO L124 PetriNetUnfolderBase]: 3375/5927 cut-off events. [2023-11-17 16:11:25,671 INFO L125 PetriNetUnfolderBase]: For 87102/87102 co-relation queries the response was YES. [2023-11-17 16:11:25,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48408 conditions, 5927 events. 3375/5927 cut-off events. For 87102/87102 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 40477 event pairs, 10 based on Foata normal form. 19/5946 useless extension candidates. Maximal degree in co-relation 48107. Up to 1456 conditions per place. [2023-11-17 16:11:25,729 INFO L140 encePairwiseOnDemand]: 149/160 looper letters, 450 selfloop transitions, 1287 changer transitions 111/1848 dead transitions. [2023-11-17 16:11:25,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 1848 transitions, 33718 flow [2023-11-17 16:11:25,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-11-17 16:11:25,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2023-11-17 16:11:25,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 5837 transitions. [2023-11-17 16:11:25,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38401315789473683 [2023-11-17 16:11:25,736 INFO L72 ComplementDD]: Start complementDD. Operand 95 states and 5837 transitions. [2023-11-17 16:11:25,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 5837 transitions. [2023-11-17 16:11:25,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:11:25,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 95 states and 5837 transitions. [2023-11-17 16:11:25,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 96 states, 95 states have (on average 61.44210526315789) internal successors, (5837), 95 states have internal predecessors, (5837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:11:25,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 96 states, 96 states have (on average 160.0) internal successors, (15360), 96 states have internal predecessors, (15360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:11:25,760 INFO L81 ComplementDD]: Finished complementDD. Result has 96 states, 96 states have (on average 160.0) internal successors, (15360), 96 states have internal predecessors, (15360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:11:25,760 INFO L175 Difference]: Start difference. First operand has 313 places, 1015 transitions, 16720 flow. Second operand 95 states and 5837 transitions. [2023-11-17 16:11:25,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 1848 transitions, 33718 flow [2023-11-17 16:11:27,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 1848 transitions, 31015 flow, removed 1070 selfloop flow, removed 24 redundant places. [2023-11-17 16:11:27,113 INFO L231 Difference]: Finished difference. Result has 407 places, 1581 transitions, 29951 flow [2023-11-17 16:11:27,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=15716, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1015, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=763, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=95, PETRI_FLOW=29951, PETRI_PLACES=407, PETRI_TRANSITIONS=1581} [2023-11-17 16:11:27,115 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 385 predicate places. [2023-11-17 16:11:27,115 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 1581 transitions, 29951 flow [2023-11-17 16:11:27,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 58.892857142857146) internal successors, (1649), 28 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:11:27,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:11:27,116 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:11:27,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 16:11:27,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:11:27,321 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:11:27,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:11:27,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1452225637, now seen corresponding path program 6 times [2023-11-17 16:11:27,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:11:27,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239540399] [2023-11-17 16:11:27,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:11:27,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:11:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:11:28,283 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:11:28,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:11:28,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239540399] [2023-11-17 16:11:28,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239540399] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:11:28,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856748726] [2023-11-17 16:11:28,284 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:11:28,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:11:28,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:11:28,285 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) [2023-11-17 16:11:28,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 16:11:28,438 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 16:11:28,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:11:28,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-17 16:11:28,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:11:29,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:11:29,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:11:30,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:11:30,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856748726] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:11:30,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:11:30,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2023-11-17 16:11:30,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375088842] [2023-11-17 16:11:30,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:11:30,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-17 16:11:30,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:11:30,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-17 16:11:30,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2023-11-17 16:11:30,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 160 [2023-11-17 16:11:30,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 1581 transitions, 29951 flow. Second operand has 25 states, 25 states have (on average 59.12) internal successors, (1478), 25 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:11:30,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:11:30,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 160 [2023-11-17 16:11:30,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:11:42,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:11:57,250 INFO L124 PetriNetUnfolderBase]: 4036/7112 cut-off events. [2023-11-17 16:11:57,250 INFO L125 PetriNetUnfolderBase]: For 83953/83953 co-relation queries the response was YES. [2023-11-17 16:11:57,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62281 conditions, 7112 events. 4036/7112 cut-off events. For 83953/83953 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 50532 event pairs, 12 based on Foata normal form. 21/7133 useless extension candidates. Maximal degree in co-relation 61928. Up to 2370 conditions per place. [2023-11-17 16:11:57,330 INFO L140 encePairwiseOnDemand]: 150/160 looper letters, 679 selfloop transitions, 1369 changer transitions 123/2171 dead transitions. [2023-11-17 16:11:57,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 2171 transitions, 44417 flow [2023-11-17 16:11:57,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-11-17 16:11:57,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-11-17 16:11:57,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 4122 transitions. [2023-11-17 16:11:57,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3845149253731343 [2023-11-17 16:11:57,335 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 4122 transitions. [2023-11-17 16:11:57,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 4122 transitions. [2023-11-17 16:11:57,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:11:57,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 4122 transitions. [2023-11-17 16:11:57,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 61.52238805970149) internal successors, (4122), 67 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:11:57,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 160.0) internal successors, (10880), 68 states have internal predecessors, (10880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:11:57,349 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 160.0) internal successors, (10880), 68 states have internal predecessors, (10880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:11:57,349 INFO L175 Difference]: Start difference. First operand has 407 places, 1581 transitions, 29951 flow. Second operand 67 states and 4122 transitions. [2023-11-17 16:11:57,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 2171 transitions, 44417 flow [2023-11-17 16:12:00,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 2171 transitions, 42967 flow, removed 683 selfloop flow, removed 22 redundant places. [2023-11-17 16:12:00,145 INFO L231 Difference]: Finished difference. Result has 467 places, 1911 transitions, 40202 flow [2023-11-17 16:12:00,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=29076, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1065, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=40202, PETRI_PLACES=467, PETRI_TRANSITIONS=1911} [2023-11-17 16:12:00,146 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 445 predicate places. [2023-11-17 16:12:00,146 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 1911 transitions, 40202 flow [2023-11-17 16:12:00,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 59.12) internal successors, (1478), 25 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:00,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:12:00,147 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:12:00,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 16:12:00,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:12:00,348 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:12:00,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:12:00,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1936583381, now seen corresponding path program 5 times [2023-11-17 16:12:00,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:12:00,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676408614] [2023-11-17 16:12:00,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:12:00,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:12:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:12:00,810 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:12:00,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:12:00,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676408614] [2023-11-17 16:12:00,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676408614] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:12:00,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000477546] [2023-11-17 16:12:00,811 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:12:00,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:12:00,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:12:00,813 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:12:00,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 16:12:00,967 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 16:12:00,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:12:00,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-17 16:12:00,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:12:01,483 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:12:01,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:12:01,904 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:12:01,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000477546] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:12:01,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:12:01,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 11] total 29 [2023-11-17 16:12:01,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897839965] [2023-11-17 16:12:01,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:12:01,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-17 16:12:01,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:12:01,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-17 16:12:01,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2023-11-17 16:12:01,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 160 [2023-11-17 16:12:01,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 1911 transitions, 40202 flow. Second operand has 31 states, 31 states have (on average 58.806451612903224) internal successors, (1823), 31 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:01,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:12:01,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 160 [2023-11-17 16:12:01,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:12:16,432 INFO L124 PetriNetUnfolderBase]: 4931/8728 cut-off events. [2023-11-17 16:12:16,432 INFO L125 PetriNetUnfolderBase]: For 128519/128519 co-relation queries the response was YES. [2023-11-17 16:12:16,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81081 conditions, 8728 events. 4931/8728 cut-off events. For 128519/128519 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 64276 event pairs, 6 based on Foata normal form. 12/8740 useless extension candidates. Maximal degree in co-relation 80602. Up to 1965 conditions per place. [2023-11-17 16:12:16,630 INFO L140 encePairwiseOnDemand]: 149/160 looper letters, 324 selfloop transitions, 2338 changer transitions 65/2727 dead transitions. [2023-11-17 16:12:16,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 2727 transitions, 59480 flow [2023-11-17 16:12:16,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-11-17 16:12:16,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2023-11-17 16:12:16,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 5916 transitions. [2023-11-17 16:12:16,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38515625 [2023-11-17 16:12:16,637 INFO L72 ComplementDD]: Start complementDD. Operand 96 states and 5916 transitions. [2023-11-17 16:12:16,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 96 states and 5916 transitions. [2023-11-17 16:12:16,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:12:16,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 96 states and 5916 transitions. [2023-11-17 16:12:16,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 97 states, 96 states have (on average 61.625) internal successors, (5916), 96 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:16,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 97 states, 97 states have (on average 160.0) internal successors, (15520), 97 states have internal predecessors, (15520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:16,660 INFO L81 ComplementDD]: Finished complementDD. Result has 97 states, 97 states have (on average 160.0) internal successors, (15520), 97 states have internal predecessors, (15520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:16,660 INFO L175 Difference]: Start difference. First operand has 467 places, 1911 transitions, 40202 flow. Second operand 96 states and 5916 transitions. [2023-11-17 16:12:16,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 2727 transitions, 59480 flow [2023-11-17 16:12:20,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 2727 transitions, 58761 flow, removed 319 selfloop flow, removed 20 redundant places. [2023-11-17 16:12:20,457 INFO L231 Difference]: Finished difference. Result has 556 places, 2454 transitions, 58052 flow [2023-11-17 16:12:20,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=39734, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1911, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1804, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=96, PETRI_FLOW=58052, PETRI_PLACES=556, PETRI_TRANSITIONS=2454} [2023-11-17 16:12:20,460 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 534 predicate places. [2023-11-17 16:12:20,460 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 2454 transitions, 58052 flow [2023-11-17 16:12:20,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 58.806451612903224) internal successors, (1823), 31 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:20,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:12:20,461 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:12:20,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 16:12:20,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-17 16:12:20,667 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:12:20,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:12:20,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1284290893, now seen corresponding path program 7 times [2023-11-17 16:12:20,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:12:20,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095169370] [2023-11-17 16:12:20,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:12:20,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:12:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:12:21,557 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:12:21,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:12:21,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095169370] [2023-11-17 16:12:21,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095169370] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:12:21,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645479663] [2023-11-17 16:12:21,557 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:12:21,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:12:21,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:12:21,558 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:12:21,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 16:12:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:12:21,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-17 16:12:21,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:12:22,580 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:12:22,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:12:24,062 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:12:24,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645479663] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:12:24,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:12:24,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 25 [2023-11-17 16:12:24,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398434638] [2023-11-17 16:12:24,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:12:24,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-17 16:12:24,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:12:24,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-17 16:12:24,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2023-11-17 16:12:24,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 160 [2023-11-17 16:12:24,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 2454 transitions, 58052 flow. Second operand has 27 states, 27 states have (on average 61.18518518518518) internal successors, (1652), 27 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:24,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:12:24,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 160 [2023-11-17 16:12:24,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:12:47,309 INFO L124 PetriNetUnfolderBase]: 5770/10250 cut-off events. [2023-11-17 16:12:47,309 INFO L125 PetriNetUnfolderBase]: For 174038/174038 co-relation queries the response was YES. [2023-11-17 16:12:47,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104103 conditions, 10250 events. 5770/10250 cut-off events. For 174038/174038 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 77547 event pairs, 27 based on Foata normal form. 17/10267 useless extension candidates. Maximal degree in co-relation 103570. Up to 3771 conditions per place. [2023-11-17 16:12:47,429 INFO L140 encePairwiseOnDemand]: 152/160 looper letters, 1086 selfloop transitions, 1892 changer transitions 118/3096 dead transitions. [2023-11-17 16:12:47,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 3096 transitions, 76504 flow [2023-11-17 16:12:47,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-11-17 16:12:47,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2023-11-17 16:12:47,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 4431 transitions. [2023-11-17 16:12:47,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4013586956521739 [2023-11-17 16:12:47,434 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 4431 transitions. [2023-11-17 16:12:47,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 4431 transitions. [2023-11-17 16:12:47,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:12:47,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 4431 transitions. [2023-11-17 16:12:47,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 64.21739130434783) internal successors, (4431), 69 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:47,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 160.0) internal successors, (11200), 70 states have internal predecessors, (11200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:47,450 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 160.0) internal successors, (11200), 70 states have internal predecessors, (11200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:47,450 INFO L175 Difference]: Start difference. First operand has 556 places, 2454 transitions, 58052 flow. Second operand 69 states and 4431 transitions. [2023-11-17 16:12:47,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 3096 transitions, 76504 flow [2023-11-17 16:12:54,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 3096 transitions, 74159 flow, removed 859 selfloop flow, removed 23 redundant places. [2023-11-17 16:12:54,145 INFO L231 Difference]: Finished difference. Result has 618 places, 2771 transitions, 68503 flow [2023-11-17 16:12:54,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=56281, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1599, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=805, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=68503, PETRI_PLACES=618, PETRI_TRANSITIONS=2771} [2023-11-17 16:12:54,148 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 596 predicate places. [2023-11-17 16:12:54,149 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 2771 transitions, 68503 flow [2023-11-17 16:12:54,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 61.18518518518518) internal successors, (1652), 27 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:54,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:12:54,150 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:12:54,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-17 16:12:54,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-17 16:12:54,356 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:12:54,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:12:54,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1123064293, now seen corresponding path program 8 times [2023-11-17 16:12:54,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:12:54,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620872285] [2023-11-17 16:12:54,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:12:54,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:12:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:12:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:12:54,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:12:54,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620872285] [2023-11-17 16:12:54,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620872285] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:12:54,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653990425] [2023-11-17 16:12:54,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:12:54,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:12:54,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:12:54,978 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:12:54,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-17 16:12:55,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:12:55,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:12:55,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-17 16:12:55,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:12:55,868 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:12:55,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:12:57,429 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:12:57,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653990425] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:12:57,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:12:57,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 25 [2023-11-17 16:12:57,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597230430] [2023-11-17 16:12:57,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:12:57,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-17 16:12:57,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:12:57,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-17 16:12:57,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2023-11-17 16:12:57,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 160 [2023-11-17 16:12:57,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 2771 transitions, 68503 flow. Second operand has 27 states, 27 states have (on average 61.18518518518518) internal successors, (1652), 27 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:12:57,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:12:57,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 160 [2023-11-17 16:12:57,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:13:06,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 16:13:26,524 INFO L124 PetriNetUnfolderBase]: 6388/11376 cut-off events. [2023-11-17 16:13:26,524 INFO L125 PetriNetUnfolderBase]: For 195659/195659 co-relation queries the response was YES. [2023-11-17 16:13:26,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116369 conditions, 11376 events. 6388/11376 cut-off events. For 195659/195659 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 86965 event pairs, 31 based on Foata normal form. 35/11411 useless extension candidates. Maximal degree in co-relation 116105. Up to 3910 conditions per place. [2023-11-17 16:13:26,671 INFO L140 encePairwiseOnDemand]: 152/160 looper letters, 1068 selfloop transitions, 2043 changer transitions 230/3341 dead transitions. [2023-11-17 16:13:26,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 3341 transitions, 86217 flow [2023-11-17 16:13:26,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-11-17 16:13:26,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2023-11-17 16:13:26,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 4177 transitions. [2023-11-17 16:13:26,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40163461538461537 [2023-11-17 16:13:26,675 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 4177 transitions. [2023-11-17 16:13:26,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 4177 transitions. [2023-11-17 16:13:26,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:13:26,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 4177 transitions. [2023-11-17 16:13:26,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 64.26153846153846) internal successors, (4177), 65 states have internal predecessors, (4177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:13:26,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 160.0) internal successors, (10560), 66 states have internal predecessors, (10560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:13:26,687 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 160.0) internal successors, (10560), 66 states have internal predecessors, (10560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:13:26,687 INFO L175 Difference]: Start difference. First operand has 618 places, 2771 transitions, 68503 flow. Second operand 65 states and 4177 transitions. [2023-11-17 16:13:26,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 3341 transitions, 86217 flow [2023-11-17 16:13:33,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 649 places, 3341 transitions, 84168 flow, removed 305 selfloop flow, removed 21 redundant places. [2023-11-17 16:13:33,112 INFO L231 Difference]: Finished difference. Result has 683 places, 2967 transitions, 78443 flow [2023-11-17 16:13:33,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=66819, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1835, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=904, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=78443, PETRI_PLACES=683, PETRI_TRANSITIONS=2967} [2023-11-17 16:13:33,115 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 661 predicate places. [2023-11-17 16:13:33,115 INFO L495 AbstractCegarLoop]: Abstraction has has 683 places, 2967 transitions, 78443 flow [2023-11-17 16:13:33,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 61.18518518518518) internal successors, (1652), 27 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:13:33,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:13:33,115 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:13:33,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-17 16:13:33,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-17 16:13:33,327 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:13:33,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:13:33,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1800453731, now seen corresponding path program 9 times [2023-11-17 16:13:33,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:13:33,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731170852] [2023-11-17 16:13:33,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:13:33,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:13:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:13:45,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:13:45,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:13:45,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731170852] [2023-11-17 16:13:45,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731170852] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:13:45,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400566584] [2023-11-17 16:13:45,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:13:45,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:13:45,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:13:45,529 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:13:45,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-17 16:13:45,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-17 16:13:45,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:13:45,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-17 16:13:45,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:13:49,646 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:13:49,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:05,167 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:05,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400566584] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:05,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:05,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2023-11-17 16:14:05,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629198706] [2023-11-17 16:14:05,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:05,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-17 16:14:05,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:05,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-17 16:14:05,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=608, Unknown=6, NotChecked=0, Total=756 [2023-11-17 16:14:05,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 160 [2023-11-17 16:14:05,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 683 places, 2967 transitions, 78443 flow. Second operand has 28 states, 28 states have (on average 61.25) internal successors, (1715), 28 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:14:05,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:05,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 160 [2023-11-17 16:14:05,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:12,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:14:17,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:14:36,905 INFO L124 PetriNetUnfolderBase]: 6599/11650 cut-off events. [2023-11-17 16:14:36,905 INFO L125 PetriNetUnfolderBase]: For 246995/246995 co-relation queries the response was YES. [2023-11-17 16:14:37,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125784 conditions, 11650 events. 6599/11650 cut-off events. For 246995/246995 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 88664 event pairs, 35 based on Foata normal form. 26/11676 useless extension candidates. Maximal degree in co-relation 125580. Up to 4581 conditions per place. [2023-11-17 16:14:37,072 INFO L140 encePairwiseOnDemand]: 152/160 looper letters, 1348 selfloop transitions, 1931 changer transitions 142/3421 dead transitions. [2023-11-17 16:14:37,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 712 places, 3421 transitions, 94289 flow [2023-11-17 16:14:37,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-17 16:14:37,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-11-17 16:14:37,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 3407 transitions. [2023-11-17 16:14:37,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017688679245283 [2023-11-17 16:14:37,075 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 3407 transitions. [2023-11-17 16:14:37,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 3407 transitions. [2023-11-17 16:14:37,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:37,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 3407 transitions. [2023-11-17 16:14:37,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 64.28301886792453) internal successors, (3407), 53 states have internal predecessors, (3407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:14:37,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 160.0) internal successors, (8640), 54 states have internal predecessors, (8640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:14:37,084 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 160.0) internal successors, (8640), 54 states have internal predecessors, (8640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:14:37,084 INFO L175 Difference]: Start difference. First operand has 683 places, 2967 transitions, 78443 flow. Second operand 53 states and 3407 transitions. [2023-11-17 16:14:37,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 712 places, 3421 transitions, 94289 flow [2023-11-17 16:14:43,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 671 places, 3421 transitions, 93582 flow, removed 201 selfloop flow, removed 41 redundant places. [2023-11-17 16:14:43,561 INFO L231 Difference]: Finished difference. Result has 693 places, 3112 transitions, 89829 flow [2023-11-17 16:14:43,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=77859, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2967, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1774, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=89829, PETRI_PLACES=693, PETRI_TRANSITIONS=3112} [2023-11-17 16:14:43,564 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 671 predicate places. [2023-11-17 16:14:43,564 INFO L495 AbstractCegarLoop]: Abstraction has has 693 places, 3112 transitions, 89829 flow [2023-11-17 16:14:43,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 61.25) internal successors, (1715), 28 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:14:43,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:43,564 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:43,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-17 16:14:43,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-17 16:14:43,765 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:14:43,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:43,765 INFO L85 PathProgramCache]: Analyzing trace with hash -592005905, now seen corresponding path program 10 times [2023-11-17 16:14:43,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:43,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732715387] [2023-11-17 16:14:43,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:43,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:44,474 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:44,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:44,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732715387] [2023-11-17 16:14:44,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732715387] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:44,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544137399] [2023-11-17 16:14:44,474 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:14:44,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:44,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:44,477 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:14:44,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-17 16:14:44,615 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:14:44,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:14:44,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-17 16:14:44,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:45,147 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:45,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:45,964 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:45,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544137399] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:45,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:45,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 28 [2023-11-17 16:14:45,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966729736] [2023-11-17 16:14:45,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:45,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-17 16:14:45,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:45,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-17 16:14:45,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=673, Unknown=0, NotChecked=0, Total=870 [2023-11-17 16:14:45,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 160 [2023-11-17 16:14:45,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 693 places, 3112 transitions, 89829 flow. Second operand has 30 states, 30 states have (on average 60.93333333333333) internal successors, (1828), 30 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:14:45,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:45,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 160 [2023-11-17 16:14:45,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:15:22,218 INFO L124 PetriNetUnfolderBase]: 7756/13720 cut-off events. [2023-11-17 16:15:22,218 INFO L125 PetriNetUnfolderBase]: For 358956/358956 co-relation queries the response was YES. [2023-11-17 16:15:22,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157179 conditions, 13720 events. 7756/13720 cut-off events. For 358956/358956 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 106899 event pairs, 33 based on Foata normal form. 37/13757 useless extension candidates. Maximal degree in co-relation 156928. Up to 4339 conditions per place. [2023-11-17 16:15:22,411 INFO L140 encePairwiseOnDemand]: 152/160 looper letters, 1084 selfloop transitions, 2622 changer transitions 315/4021 dead transitions. [2023-11-17 16:15:22,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 756 places, 4021 transitions, 119328 flow [2023-11-17 16:15:22,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-11-17 16:15:22,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2023-11-17 16:15:22,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 5263 transitions. [2023-11-17 16:15:22,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4011432926829268 [2023-11-17 16:15:22,416 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 5263 transitions. [2023-11-17 16:15:22,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 5263 transitions. [2023-11-17 16:15:22,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:15:22,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 5263 transitions. [2023-11-17 16:15:22,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 64.1829268292683) internal successors, (5263), 82 states have internal predecessors, (5263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:15:22,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 160.0) internal successors, (13280), 83 states have internal predecessors, (13280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:15:22,431 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 160.0) internal successors, (13280), 83 states have internal predecessors, (13280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:15:22,432 INFO L175 Difference]: Start difference. First operand has 693 places, 3112 transitions, 89829 flow. Second operand 82 states and 5263 transitions. [2023-11-17 16:15:22,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 756 places, 4021 transitions, 119328 flow [2023-11-17 16:15:31,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 727 places, 4021 transitions, 118444 flow, removed 165 selfloop flow, removed 29 redundant places. [2023-11-17 16:15:31,174 INFO L231 Difference]: Finished difference. Result has 773 places, 3532 transitions, 109240 flow [2023-11-17 16:15:31,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=89225, PETRI_DIFFERENCE_MINUEND_PLACES=646, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=860, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=109240, PETRI_PLACES=773, PETRI_TRANSITIONS=3532} [2023-11-17 16:15:31,177 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 751 predicate places. [2023-11-17 16:15:31,178 INFO L495 AbstractCegarLoop]: Abstraction has has 773 places, 3532 transitions, 109240 flow [2023-11-17 16:15:31,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 60.93333333333333) internal successors, (1828), 30 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:15:31,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:15:31,178 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:15:31,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-17 16:15:31,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-17 16:15:31,384 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:15:31,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:15:31,384 INFO L85 PathProgramCache]: Analyzing trace with hash 584657882, now seen corresponding path program 11 times [2023-11-17 16:15:31,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:15:31,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566891849] [2023-11-17 16:15:31,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:15:31,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:15:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:15:32,126 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:15:32,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:15:32,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566891849] [2023-11-17 16:15:32,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566891849] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:15:32,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442621886] [2023-11-17 16:15:32,127 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:15:32,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:15:32,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:15:32,129 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:15:32,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-17 16:15:32,314 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 16:15:32,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:15:32,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-17 16:15:32,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:15:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:15:33,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:15:34,615 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:15:34,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442621886] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:15:34,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:15:34,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 28 [2023-11-17 16:15:34,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852959781] [2023-11-17 16:15:34,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:15:34,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-17 16:15:34,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:15:34,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-17 16:15:34,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=713, Unknown=0, NotChecked=0, Total=870 [2023-11-17 16:15:34,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 160 [2023-11-17 16:15:34,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 773 places, 3532 transitions, 109240 flow. Second operand has 30 states, 30 states have (on average 60.96666666666667) internal successors, (1829), 30 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:15:34,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:15:34,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 160 [2023-11-17 16:15:34,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:15:39,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:16:07,511 INFO L124 PetriNetUnfolderBase]: 8668/15312 cut-off events. [2023-11-17 16:16:07,512 INFO L125 PetriNetUnfolderBase]: For 464809/464809 co-relation queries the response was YES. [2023-11-17 16:16:07,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185517 conditions, 15312 events. 8668/15312 cut-off events. For 464809/464809 co-relation queries the response was YES. Maximal size of possible extension queue 930. Compared 122403 event pairs, 31 based on Foata normal form. 35/15347 useless extension candidates. Maximal degree in co-relation 185252. Up to 5493 conditions per place. [2023-11-17 16:16:07,747 INFO L140 encePairwiseOnDemand]: 152/160 looper letters, 1375 selfloop transitions, 2923 changer transitions 201/4499 dead transitions. [2023-11-17 16:16:07,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 834 places, 4499 transitions, 141940 flow [2023-11-17 16:16:07,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-11-17 16:16:07,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2023-11-17 16:16:07,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 5635 transitions. [2023-11-17 16:16:07,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4002130681818182 [2023-11-17 16:16:07,751 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 5635 transitions. [2023-11-17 16:16:07,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 5635 transitions. [2023-11-17 16:16:07,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:16:07,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 5635 transitions. [2023-11-17 16:16:07,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 64.0340909090909) internal successors, (5635), 88 states have internal predecessors, (5635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:16:07,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 160.0) internal successors, (14240), 89 states have internal predecessors, (14240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:16:07,766 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 160.0) internal successors, (14240), 89 states have internal predecessors, (14240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:16:07,766 INFO L175 Difference]: Start difference. First operand has 773 places, 3532 transitions, 109240 flow. Second operand 88 states and 5635 transitions. [2023-11-17 16:16:07,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 834 places, 4499 transitions, 141940 flow [2023-11-17 16:16:19,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 798 places, 4499 transitions, 140948 flow, removed 440 selfloop flow, removed 36 redundant places. [2023-11-17 16:16:19,917 INFO L231 Difference]: Finished difference. Result has 843 places, 4056 transitions, 133341 flow [2023-11-17 16:16:19,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=108464, PETRI_DIFFERENCE_MINUEND_PLACES=711, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2429, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1033, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=133341, PETRI_PLACES=843, PETRI_TRANSITIONS=4056} [2023-11-17 16:16:19,920 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 821 predicate places. [2023-11-17 16:16:19,920 INFO L495 AbstractCegarLoop]: Abstraction has has 843 places, 4056 transitions, 133341 flow [2023-11-17 16:16:19,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 60.96666666666667) internal successors, (1829), 30 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:16:19,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:16:19,920 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:16:19,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-17 16:16:20,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-17 16:16:20,121 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:16:20,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:16:20,121 INFO L85 PathProgramCache]: Analyzing trace with hash 395972562, now seen corresponding path program 12 times [2023-11-17 16:16:20,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:16:20,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790167035] [2023-11-17 16:16:20,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:16:20,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:16:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:16:20,849 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:16:20,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:16:20,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790167035] [2023-11-17 16:16:20,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790167035] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:16:20,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46035701] [2023-11-17 16:16:20,850 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:16:20,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:16:20,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:16:20,851 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:16:20,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-17 16:16:20,934 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-17 16:16:20,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:16:20,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-17 16:16:20,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:16:21,568 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:16:21,568 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:16:22,547 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:16:22,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46035701] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:16:22,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:16:22,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 28 [2023-11-17 16:16:22,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079752788] [2023-11-17 16:16:22,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:16:22,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-17 16:16:22,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:16:22,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-17 16:16:22,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2023-11-17 16:16:22,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 160 [2023-11-17 16:16:22,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 843 places, 4056 transitions, 133341 flow. Second operand has 30 states, 30 states have (on average 60.96666666666667) internal successors, (1829), 30 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:16:22,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:16:22,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 160 [2023-11-17 16:16:22,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:16:54,998 INFO L124 PetriNetUnfolderBase]: 9418/16580 cut-off events. [2023-11-17 16:16:54,998 INFO L125 PetriNetUnfolderBase]: For 584527/584527 co-relation queries the response was YES. [2023-11-17 16:16:55,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212528 conditions, 16580 events. 9418/16580 cut-off events. For 584527/584527 co-relation queries the response was YES. Maximal size of possible extension queue 1033. Compared 133741 event pairs, 31 based on Foata normal form. 17/16597 useless extension candidates. Maximal degree in co-relation 211846. Up to 6446 conditions per place. [2023-11-17 16:16:55,285 INFO L140 encePairwiseOnDemand]: 152/160 looper letters, 1503 selfloop transitions, 3252 changer transitions 120/4875 dead transitions. [2023-11-17 16:16:55,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 906 places, 4875 transitions, 163684 flow [2023-11-17 16:16:55,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-11-17 16:16:55,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2023-11-17 16:16:55,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 5483 transitions. [2023-11-17 16:16:55,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39847383720930235 [2023-11-17 16:16:55,292 INFO L72 ComplementDD]: Start complementDD. Operand 86 states and 5483 transitions. [2023-11-17 16:16:55,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 86 states and 5483 transitions. [2023-11-17 16:16:55,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:16:55,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 86 states and 5483 transitions. [2023-11-17 16:16:55,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 87 states, 86 states have (on average 63.75581395348837) internal successors, (5483), 86 states have internal predecessors, (5483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:16:55,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 87 states, 87 states have (on average 160.0) internal successors, (13920), 87 states have internal predecessors, (13920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:16:55,306 INFO L81 ComplementDD]: Finished complementDD. Result has 87 states, 87 states have (on average 160.0) internal successors, (13920), 87 states have internal predecessors, (13920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:16:55,306 INFO L175 Difference]: Start difference. First operand has 843 places, 4056 transitions, 133341 flow. Second operand 86 states and 5483 transitions. [2023-11-17 16:16:55,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 906 places, 4875 transitions, 163684 flow [2023-11-17 16:17:10,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 879 places, 4875 transitions, 162479 flow, removed 560 selfloop flow, removed 27 redundant places. [2023-11-17 16:17:11,071 INFO L231 Difference]: Finished difference. Result has 909 places, 4498 transitions, 155254 flow [2023-11-17 16:17:11,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=132336, PETRI_DIFFERENCE_MINUEND_PLACES=794, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4056, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2839, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=86, PETRI_FLOW=155254, PETRI_PLACES=909, PETRI_TRANSITIONS=4498} [2023-11-17 16:17:11,075 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 887 predicate places. [2023-11-17 16:17:11,075 INFO L495 AbstractCegarLoop]: Abstraction has has 909 places, 4498 transitions, 155254 flow [2023-11-17 16:17:11,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 60.96666666666667) internal successors, (1829), 30 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:17:11,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:17:11,075 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:17:11,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-17 16:17:11,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:17:11,276 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:17:11,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:17:11,276 INFO L85 PathProgramCache]: Analyzing trace with hash 343958031, now seen corresponding path program 13 times [2023-11-17 16:17:11,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:17:11,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800664457] [2023-11-17 16:17:11,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:17:11,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:17:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:17:11,684 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 16:17:11,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:17:11,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800664457] [2023-11-17 16:17:11,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800664457] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:17:11,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593370512] [2023-11-17 16:17:11,684 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:17:11,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:17:11,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:17:11,685 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:17:11,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-17 16:17:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:17:11,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-17 16:17:11,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:17:12,764 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:17:12,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:17:14,043 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:17:14,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593370512] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:17:14,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:17:14,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 11] total 27 [2023-11-17 16:17:14,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923948216] [2023-11-17 16:17:14,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:17:14,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-17 16:17:14,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:17:14,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-17 16:17:14,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=640, Unknown=0, NotChecked=0, Total=812 [2023-11-17 16:17:14,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 160 [2023-11-17 16:17:14,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 909 places, 4498 transitions, 155254 flow. Second operand has 29 states, 29 states have (on average 58.93103448275862) internal successors, (1709), 29 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:17:14,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:17:14,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 160 [2023-11-17 16:17:14,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:17:58,802 WARN L293 SmtUtils]: Spent 6.45s on a formula simplification. DAG size of input: 138 DAG size of output: 140 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-17 16:18:38,678 INFO L124 PetriNetUnfolderBase]: 10439/18394 cut-off events. [2023-11-17 16:18:38,679 INFO L125 PetriNetUnfolderBase]: For 718856/718856 co-relation queries the response was YES. [2023-11-17 16:18:38,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243708 conditions, 18394 events. 10439/18394 cut-off events. For 718856/718856 co-relation queries the response was YES. Maximal size of possible extension queue 1127. Compared 150129 event pairs, 49 based on Foata normal form. 54/18448 useless extension candidates. Maximal degree in co-relation 243405. Up to 5159 conditions per place. [2023-11-17 16:18:39,123 INFO L140 encePairwiseOnDemand]: 149/160 looper letters, 1276 selfloop transitions, 3902 changer transitions 208/5386 dead transitions. [2023-11-17 16:18:39,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 988 places, 5386 transitions, 190039 flow [2023-11-17 16:18:39,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-11-17 16:18:39,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2023-11-17 16:18:39,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 5717 transitions. [2023-11-17 16:18:39,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38420698924731184 [2023-11-17 16:18:39,127 INFO L72 ComplementDD]: Start complementDD. Operand 93 states and 5717 transitions. [2023-11-17 16:18:39,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 5717 transitions. [2023-11-17 16:18:39,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:18:39,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 93 states and 5717 transitions. [2023-11-17 16:18:39,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 94 states, 93 states have (on average 61.473118279569896) internal successors, (5717), 93 states have internal predecessors, (5717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:18:39,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 94 states, 94 states have (on average 160.0) internal successors, (15040), 94 states have internal predecessors, (15040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:18:39,143 INFO L81 ComplementDD]: Finished complementDD. Result has 94 states, 94 states have (on average 160.0) internal successors, (15040), 94 states have internal predecessors, (15040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:18:39,143 INFO L175 Difference]: Start difference. First operand has 909 places, 4498 transitions, 155254 flow. Second operand 93 states and 5717 transitions. [2023-11-17 16:18:39,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 988 places, 5386 transitions, 190039 flow Received shutdown request... [2023-11-17 16:18:39,179 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 16:18:39,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-17 16:18:39,199 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:18:39,206 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:18:39,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:18:39,380 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-11-17 16:18:39,381 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 16:18:39,381 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 16:18:39,382 INFO L445 BasicCegarLoop]: Path program histogram: [13, 5, 1] [2023-11-17 16:18:39,384 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 16:18:39,384 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 16:18:39,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 04:18:39 BasicIcfg [2023-11-17 16:18:39,386 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 16:18:39,386 INFO L158 Benchmark]: Toolchain (without parser) took 529824.26ms. Allocated memory was 173.0MB in the beginning and 3.9GB in the end (delta: 3.8GB). Free memory was 129.0MB in the beginning and 876.4MB in the end (delta: -747.4MB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. [2023-11-17 16:18:39,387 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 173.0MB. Free memory was 132.1MB in the beginning and 131.9MB in the end (delta: 161.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 16:18:39,387 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.63ms. Allocated memory is still 173.0MB. Free memory was 129.0MB in the beginning and 118.0MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 16:18:39,387 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.96ms. Allocated memory is still 173.0MB. Free memory was 117.5MB in the beginning and 116.3MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 16:18:39,387 INFO L158 Benchmark]: Boogie Preprocessor took 20.01ms. Allocated memory is still 173.0MB. Free memory was 116.3MB in the beginning and 114.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:18:39,387 INFO L158 Benchmark]: RCFGBuilder took 449.86ms. Allocated memory is still 173.0MB. Free memory was 114.8MB in the beginning and 98.5MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-11-17 16:18:39,387 INFO L158 Benchmark]: TraceAbstraction took 529094.91ms. Allocated memory was 173.0MB in the beginning and 3.9GB in the end (delta: 3.8GB). Free memory was 97.6MB in the beginning and 876.4MB in the end (delta: -778.8MB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. [2023-11-17 16:18:39,388 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 173.0MB. Free memory was 132.1MB in the beginning and 131.9MB in the end (delta: 161.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 225.63ms. Allocated memory is still 173.0MB. Free memory was 129.0MB in the beginning and 118.0MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.96ms. Allocated memory is still 173.0MB. Free memory was 117.5MB in the beginning and 116.3MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.01ms. Allocated memory is still 173.0MB. Free memory was 116.3MB in the beginning and 114.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 449.86ms. Allocated memory is still 173.0MB. Free memory was 114.8MB in the beginning and 98.5MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 529094.91ms. Allocated memory was 173.0MB in the beginning and 3.9GB in the end (delta: 3.8GB). Free memory was 97.6MB in the beginning and 876.4MB in the end (delta: -778.8MB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 78 PlacesBefore, 22 PlacesAfterwards, 77 TransitionsBefore, 17 TransitionsAfterwards, 462 CoEnabledTransitionPairs, 6 FixpointIterations, 42 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 72 TotalNumberOfCompositions, 659 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 503, independent: 478, independent conditional: 0, independent unconditional: 478, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 300, independent: 296, independent conditional: 0, independent unconditional: 296, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 300, independent: 296, independent conditional: 0, independent unconditional: 296, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 16, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 503, independent: 182, independent conditional: 0, independent unconditional: 182, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 300, unknown conditional: 0, unknown unconditional: 300] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 102 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 529.0s, OverallIterations: 19, TraceHistogramMax: 3, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 456.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 4794 SdHoareTripleChecker+Valid, 70.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4794 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 67.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1212 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18320 IncrementalHoareTripleChecker+Invalid, 19535 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1212 mSolverCounterUnsat, 2 mSDtfsCounter, 18320 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1565 GetRequests, 318 SyntacticMatches, 14 SemanticMatches, 1233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37525 ImplicationChecksByTransitivity, 266.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155254occurred in iteration=18, InterpolantAutomatonStates: 972, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 63.9s InterpolantComputationTime, 644 NumberOfCodeBlocks, 644 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 888 ConstructedInterpolants, 0 QuantifiedInterpolants, 33882 SizeOfPredicates, 103 NumberOfNonLiveVariables, 2023 ConjunctsInSsa, 336 ConjunctsInUnsatCore, 49 InterpolantComputations, 5 PerfectInterpolantSequences, 24/312 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown