/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-simple-array-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:32:11,837 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:32:11,916 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 16:32:11,955 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:32:11,956 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:32:11,956 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:32:11,957 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:32:11,957 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:32:11,957 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:32:11,961 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:32:11,962 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:32:11,962 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:32:11,962 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:32:11,963 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:32:11,963 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:32:11,964 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:32:11,964 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:32:11,964 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:32:11,964 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:32:11,965 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:32:11,965 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:32:11,966 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:32:11,966 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:32:11,966 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:32:11,966 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:32:11,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:32:11,967 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:32:11,967 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:32:11,967 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:32:11,968 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:32:11,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:32:11,968 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:32:11,968 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:32:12,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:32:12,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:32:12,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:32:12,227 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:32:12,228 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:32:12,229 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2023-11-17 16:32:13,363 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:32:13,551 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:32:13,551 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2023-11-17 16:32:13,562 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c033c3cd/8c6612dc816e4ea0ab825de04011629e/FLAGaf36524f0 [2023-11-17 16:32:13,574 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c033c3cd/8c6612dc816e4ea0ab825de04011629e [2023-11-17 16:32:13,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:32:13,577 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:32:13,578 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:32:13,579 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:32:13,582 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:32:13,583 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:32:13" (1/1) ... [2023-11-17 16:32:13,584 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@696dc983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:32:13, skipping insertion in model container [2023-11-17 16:32:13,584 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:32:13" (1/1) ... [2023-11-17 16:32:13,608 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:32:13,783 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-simple-array-sum.wvr.c[2729,2742] [2023-11-17 16:32:13,800 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:32:13,809 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:32:13,838 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-simple-array-sum.wvr.c[2729,2742] [2023-11-17 16:32:13,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:32:13,849 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:32:13,850 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:32:13,856 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:32:13,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:32:13 WrapperNode [2023-11-17 16:32:13,857 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:32:13,858 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:32:13,858 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:32:13,859 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:32:13,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:32:13" (1/1) ... [2023-11-17 16:32:13,881 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:32:13" (1/1) ... [2023-11-17 16:32:13,910 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 125 [2023-11-17 16:32:13,910 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:32:13,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:32:13,911 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:32:13,911 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:32:13,919 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:32:13" (1/1) ... [2023-11-17 16:32:13,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:32:13" (1/1) ... [2023-11-17 16:32:13,931 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:32:13" (1/1) ... [2023-11-17 16:32:13,931 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:32:13" (1/1) ... [2023-11-17 16:32:13,940 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:32:13" (1/1) ... [2023-11-17 16:32:13,950 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:32:13" (1/1) ... [2023-11-17 16:32:13,952 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:32:13" (1/1) ... [2023-11-17 16:32:13,953 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:32:13" (1/1) ... [2023-11-17 16:32:13,955 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:32:13,955 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:32:13,956 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:32:13,956 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:32:13,956 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:32:13" (1/1) ... [2023-11-17 16:32:13,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:32:13,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:32:13,994 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 16:32:14,018 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 16:32:14,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:32:14,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:32:14,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:32:14,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:32:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:32:14,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:32:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:32:14,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:32:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 16:32:14,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 16:32:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:32:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 16:32:14,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 16:32:14,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 16:32:14,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:32:14,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:32:14,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:32:14,032 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 16:32:14,155 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:32:14,159 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:32:14,453 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:32:14,496 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:32:14,497 INFO L307 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-17 16:32:14,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:32:14 BoogieIcfgContainer [2023-11-17 16:32:14,498 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:32:14,500 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:32:14,500 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:32:14,503 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:32:14,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:32:13" (1/3) ... [2023-11-17 16:32:14,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e661721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:32:14, skipping insertion in model container [2023-11-17 16:32:14,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:32:13" (2/3) ... [2023-11-17 16:32:14,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e661721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:32:14, skipping insertion in model container [2023-11-17 16:32:14,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:32:14" (3/3) ... [2023-11-17 16:32:14,508 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2023-11-17 16:32:14,522 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:32:14,523 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:32:14,523 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:32:14,636 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 16:32:14,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 193 transitions, 407 flow [2023-11-17 16:32:14,748 INFO L124 PetriNetUnfolderBase]: 16/190 cut-off events. [2023-11-17 16:32:14,749 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:32:14,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 190 events. 16/190 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 139 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 147. Up to 2 conditions per place. [2023-11-17 16:32:14,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 193 transitions, 407 flow [2023-11-17 16:32:14,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 179 transitions, 376 flow [2023-11-17 16:32:14,762 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:32:14,775 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 179 transitions, 376 flow [2023-11-17 16:32:14,782 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 179 transitions, 376 flow [2023-11-17 16:32:14,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 179 transitions, 376 flow [2023-11-17 16:32:14,835 INFO L124 PetriNetUnfolderBase]: 16/179 cut-off events. [2023-11-17 16:32:14,835 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:32:14,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 179 events. 16/179 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 138 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 147. Up to 2 conditions per place. [2023-11-17 16:32:14,841 INFO L119 LiptonReduction]: Number of co-enabled transitions 2176 [2023-11-17 16:32:19,926 INFO L134 LiptonReduction]: Checked pairs total: 2749 [2023-11-17 16:32:19,927 INFO L136 LiptonReduction]: Total number of compositions: 180 [2023-11-17 16:32:19,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:32:19,945 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;@464f3982, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:32:19,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 16:32:19,951 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:32:19,952 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2023-11-17 16:32:19,952 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:32:19,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:32:19,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:32:19,953 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:32:19,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:32:19,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1655756603, now seen corresponding path program 1 times [2023-11-17 16:32:19,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:32:19,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418943670] [2023-11-17 16:32:19,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:19,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:32:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:20,823 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 16:32:20,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:32:20,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418943670] [2023-11-17 16:32:20,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418943670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:32:20,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:32:20,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 16:32:20,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471746937] [2023-11-17 16:32:20,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:32:20,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:32:20,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:32:20,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:32:20,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:32:20,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 373 [2023-11-17 16:32:20,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 0 states have call successors, (0), 0 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 16:32:20,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:32:20,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 373 [2023-11-17 16:32:20,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:32:21,120 INFO L124 PetriNetUnfolderBase]: 805/1146 cut-off events. [2023-11-17 16:32:21,120 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2023-11-17 16:32:21,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2403 conditions, 1146 events. 805/1146 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3749 event pairs, 506 based on Foata normal form. 1/847 useless extension candidates. Maximal degree in co-relation 918. Up to 651 conditions per place. [2023-11-17 16:32:21,132 INFO L140 encePairwiseOnDemand]: 367/373 looper letters, 50 selfloop transitions, 5 changer transitions 1/56 dead transitions. [2023-11-17 16:32:21,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 56 transitions, 260 flow [2023-11-17 16:32:21,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:32:21,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:32:21,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 593 transitions. [2023-11-17 16:32:21,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39745308310991956 [2023-11-17 16:32:21,153 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 593 transitions. [2023-11-17 16:32:21,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 593 transitions. [2023-11-17 16:32:21,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:32:21,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 593 transitions. [2023-11-17 16:32:21,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.25) internal successors, (593), 4 states have internal predecessors, (593), 0 states have call successors, (0), 0 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 16:32:21,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 373.0) internal successors, (1865), 5 states have internal predecessors, (1865), 0 states have call successors, (0), 0 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 16:32:21,167 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 373.0) internal successors, (1865), 5 states have internal predecessors, (1865), 0 states have call successors, (0), 0 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 16:32:21,169 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 76 flow. Second operand 4 states and 593 transitions. [2023-11-17 16:32:21,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 56 transitions, 260 flow [2023-11-17 16:32:21,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 56 transitions, 236 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 16:32:21,175 INFO L231 Difference]: Finished difference. Result has 32 places, 33 transitions, 98 flow [2023-11-17 16:32:21,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=32, PETRI_TRANSITIONS=33} [2023-11-17 16:32:21,179 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2023-11-17 16:32:21,179 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 33 transitions, 98 flow [2023-11-17 16:32:21,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 0 states have call successors, (0), 0 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 16:32:21,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:32:21,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:32:21,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:32:21,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:32:21,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:32:21,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1047882074, now seen corresponding path program 1 times [2023-11-17 16:32:21,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:32:21,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208016034] [2023-11-17 16:32:21,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:21,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:32:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:21,281 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 16:32:21,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:32:21,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208016034] [2023-11-17 16:32:21,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208016034] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:32:21,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42653701] [2023-11-17 16:32:21,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:21,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:21,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:32:21,289 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 16:32:21,319 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 16:32:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:21,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:32:21,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:32:21,489 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 16:32:21,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:32:21,528 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 16:32:21,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42653701] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:32:21,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:32:21,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-11-17 16:32:21,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601293252] [2023-11-17 16:32:21,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:32:21,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:32:21,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:32:21,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:32:21,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:32:21,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 373 [2023-11-17 16:32:21,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 33 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 141.4) internal successors, (707), 5 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:32:21,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:32:21,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 373 [2023-11-17 16:32:21,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:32:21,817 INFO L124 PetriNetUnfolderBase]: 1568/2229 cut-off events. [2023-11-17 16:32:21,817 INFO L125 PetriNetUnfolderBase]: For 231/231 co-relation queries the response was YES. [2023-11-17 16:32:21,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4986 conditions, 2229 events. 1568/2229 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 8494 event pairs, 1003 based on Foata normal form. 0/1805 useless extension candidates. Maximal degree in co-relation 3727. Up to 1145 conditions per place. [2023-11-17 16:32:21,827 INFO L140 encePairwiseOnDemand]: 368/373 looper letters, 56 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2023-11-17 16:32:21,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 62 transitions, 298 flow [2023-11-17 16:32:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:32:21,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:32:21,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 744 transitions. [2023-11-17 16:32:21,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3989276139410188 [2023-11-17 16:32:21,830 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 744 transitions. [2023-11-17 16:32:21,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 744 transitions. [2023-11-17 16:32:21,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:32:21,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 744 transitions. [2023-11-17 16:32:21,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.8) internal successors, (744), 5 states have internal predecessors, (744), 0 states have call successors, (0), 0 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 16:32:21,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 373.0) internal successors, (2238), 6 states have internal predecessors, (2238), 0 states have call successors, (0), 0 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 16:32:21,843 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 373.0) internal successors, (2238), 6 states have internal predecessors, (2238), 0 states have call successors, (0), 0 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 16:32:21,843 INFO L175 Difference]: Start difference. First operand has 32 places, 33 transitions, 98 flow. Second operand 5 states and 744 transitions. [2023-11-17 16:32:21,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 62 transitions, 298 flow [2023-11-17 16:32:21,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 62 transitions, 290 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 16:32:21,846 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 122 flow [2023-11-17 16:32:21,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2023-11-17 16:32:21,847 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-11-17 16:32:21,847 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 122 flow [2023-11-17 16:32:21,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.4) internal successors, (707), 5 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:32:21,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:32:21,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:32:21,857 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 16:32:22,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:22,054 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:32:22,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:32:22,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1421783229, now seen corresponding path program 1 times [2023-11-17 16:32:22,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:32:22,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182366006] [2023-11-17 16:32:22,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:22,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:32:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:22,169 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 16:32:22,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:32:22,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182366006] [2023-11-17 16:32:22,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182366006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:32:22,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:32:22,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:32:22,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305319386] [2023-11-17 16:32:22,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:32:22,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:32:22,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:32:22,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:32:22,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:32:22,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 373 [2023-11-17 16:32:22,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 136.4) internal successors, (682), 5 states have internal predecessors, (682), 0 states have call successors, (0), 0 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 16:32:22,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:32:22,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 373 [2023-11-17 16:32:22,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:32:22,425 INFO L124 PetriNetUnfolderBase]: 1610/2329 cut-off events. [2023-11-17 16:32:22,425 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2023-11-17 16:32:22,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4949 conditions, 2329 events. 1610/2329 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9485 event pairs, 863 based on Foata normal form. 132/1958 useless extension candidates. Maximal degree in co-relation 3681. Up to 1272 conditions per place. [2023-11-17 16:32:22,436 INFO L140 encePairwiseOnDemand]: 365/373 looper letters, 66 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2023-11-17 16:32:22,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 75 transitions, 370 flow [2023-11-17 16:32:22,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:32:22,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:32:22,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 866 transitions. [2023-11-17 16:32:22,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.386952636282395 [2023-11-17 16:32:22,440 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 866 transitions. [2023-11-17 16:32:22,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 866 transitions. [2023-11-17 16:32:22,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:32:22,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 866 transitions. [2023-11-17 16:32:22,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 144.33333333333334) internal successors, (866), 6 states have internal predecessors, (866), 0 states have call successors, (0), 0 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 16:32:22,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 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 16:32:22,446 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 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 16:32:22,446 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 122 flow. Second operand 6 states and 866 transitions. [2023-11-17 16:32:22,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 75 transitions, 370 flow [2023-11-17 16:32:22,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 75 transitions, 366 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 16:32:22,459 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 148 flow [2023-11-17 16:32:22,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=148, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-11-17 16:32:22,462 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2023-11-17 16:32:22,462 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 148 flow [2023-11-17 16:32:22,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.4) internal successors, (682), 5 states have internal predecessors, (682), 0 states have call successors, (0), 0 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 16:32:22,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:32:22,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:32:22,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 16:32:22,463 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:32:22,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:32:22,464 INFO L85 PathProgramCache]: Analyzing trace with hash -348438100, now seen corresponding path program 1 times [2023-11-17 16:32:22,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:32:22,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68358669] [2023-11-17 16:32:22,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:22,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:32:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:22,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:32:22,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:32:22,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68358669] [2023-11-17 16:32:22,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68358669] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:32:22,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119854905] [2023-11-17 16:32:22,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:22,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:22,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:32:22,562 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 16:32:22,565 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 16:32:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:22,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 16:32:22,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:32:22,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:32:22,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:32:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:32:22,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119854905] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:32:22,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:32:22,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-11-17 16:32:22,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64029757] [2023-11-17 16:32:22,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:32:22,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:32:22,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:32:22,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:32:22,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:32:22,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 373 [2023-11-17 16:32:22,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 136.6) internal successors, (683), 5 states have internal predecessors, (683), 0 states have call successors, (0), 0 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 16:32:22,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:32:22,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 373 [2023-11-17 16:32:22,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:32:22,999 INFO L124 PetriNetUnfolderBase]: 1396/2018 cut-off events. [2023-11-17 16:32:22,999 INFO L125 PetriNetUnfolderBase]: For 911/911 co-relation queries the response was YES. [2023-11-17 16:32:23,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4911 conditions, 2018 events. 1396/2018 cut-off events. For 911/911 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7932 event pairs, 761 based on Foata normal form. 108/1699 useless extension candidates. Maximal degree in co-relation 3118. Up to 876 conditions per place. [2023-11-17 16:32:23,009 INFO L140 encePairwiseOnDemand]: 366/373 looper letters, 67 selfloop transitions, 5 changer transitions 4/76 dead transitions. [2023-11-17 16:32:23,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 76 transitions, 404 flow [2023-11-17 16:32:23,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:32:23,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:32:23,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 732 transitions. [2023-11-17 16:32:23,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39249329758713136 [2023-11-17 16:32:23,012 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 732 transitions. [2023-11-17 16:32:23,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 732 transitions. [2023-11-17 16:32:23,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:32:23,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 732 transitions. [2023-11-17 16:32:23,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 0 states have call successors, (0), 0 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 16:32:23,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 373.0) internal successors, (2238), 6 states have internal predecessors, (2238), 0 states have call successors, (0), 0 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 16:32:23,018 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 373.0) internal successors, (2238), 6 states have internal predecessors, (2238), 0 states have call successors, (0), 0 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 16:32:23,018 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 148 flow. Second operand 5 states and 732 transitions. [2023-11-17 16:32:23,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 76 transitions, 404 flow [2023-11-17 16:32:23,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 76 transitions, 393 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 16:32:23,021 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 161 flow [2023-11-17 16:32:23,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2023-11-17 16:32:23,022 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2023-11-17 16:32:23,022 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 161 flow [2023-11-17 16:32:23,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.6) internal successors, (683), 5 states have internal predecessors, (683), 0 states have call successors, (0), 0 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 16:32:23,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:32:23,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:32:23,035 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 16:32:23,233 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,SelfDestructingSolverStorable3 [2023-11-17 16:32:23,233 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:32:23,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:32:23,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1869373759, now seen corresponding path program 1 times [2023-11-17 16:32:23,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:32:23,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647370926] [2023-11-17 16:32:23,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:23,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:32:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:23,320 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 16:32:23,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:32:23,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647370926] [2023-11-17 16:32:23,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647370926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:32:23,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:32:23,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:32:23,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633428730] [2023-11-17 16:32:23,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:32:23,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:32:23,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:32:23,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:32:23,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:32:23,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 373 [2023-11-17 16:32:23,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 161 flow. Second operand has 5 states, 5 states have (on average 137.6) internal successors, (688), 5 states have internal predecessors, (688), 0 states have call successors, (0), 0 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 16:32:23,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:32:23,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 373 [2023-11-17 16:32:23,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:32:23,495 INFO L124 PetriNetUnfolderBase]: 730/1080 cut-off events. [2023-11-17 16:32:23,495 INFO L125 PetriNetUnfolderBase]: For 1432/1432 co-relation queries the response was YES. [2023-11-17 16:32:23,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2980 conditions, 1080 events. 730/1080 cut-off events. For 1432/1432 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3691 event pairs, 400 based on Foata normal form. 0/918 useless extension candidates. Maximal degree in co-relation 2013. Up to 723 conditions per place. [2023-11-17 16:32:23,501 INFO L140 encePairwiseOnDemand]: 365/373 looper letters, 28 selfloop transitions, 4 changer transitions 32/64 dead transitions. [2023-11-17 16:32:23,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 64 transitions, 361 flow [2023-11-17 16:32:23,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:32:23,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:32:23,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 863 transitions. [2023-11-17 16:32:23,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38561215370866847 [2023-11-17 16:32:23,504 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 863 transitions. [2023-11-17 16:32:23,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 863 transitions. [2023-11-17 16:32:23,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:32:23,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 863 transitions. [2023-11-17 16:32:23,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 143.83333333333334) internal successors, (863), 6 states have internal predecessors, (863), 0 states have call successors, (0), 0 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 16:32:23,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 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 16:32:23,510 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 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 16:32:23,510 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 161 flow. Second operand 6 states and 863 transitions. [2023-11-17 16:32:23,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 64 transitions, 361 flow [2023-11-17 16:32:23,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 64 transitions, 330 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-11-17 16:32:23,513 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 124 flow [2023-11-17 16:32:23,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=124, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2023-11-17 16:32:23,513 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2023-11-17 16:32:23,514 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 124 flow [2023-11-17 16:32:23,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.6) internal successors, (688), 5 states have internal predecessors, (688), 0 states have call successors, (0), 0 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 16:32:23,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:32:23,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:32:23,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 16:32:23,515 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:32:23,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:32:23,515 INFO L85 PathProgramCache]: Analyzing trace with hash 526813362, now seen corresponding path program 1 times [2023-11-17 16:32:23,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:32:23,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861554631] [2023-11-17 16:32:23,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:23,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:32:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:23,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:32:23,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:32:23,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861554631] [2023-11-17 16:32:23,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861554631] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:32:23,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425064958] [2023-11-17 16:32:23,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:23,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:23,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:32:23,629 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 16:32:23,651 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 16:32:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:23,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 16:32:23,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:32:23,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:32:23,775 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:32:23,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:32:23,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425064958] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:32:23,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:32:23,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-11-17 16:32:23,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530499328] [2023-11-17 16:32:23,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:32:23,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 16:32:23,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:32:23,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 16:32:23,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:32:23,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 373 [2023-11-17 16:32:23,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 124 flow. Second operand has 9 states, 9 states have (on average 136.0) internal successors, (1224), 9 states have internal predecessors, (1224), 0 states have call successors, (0), 0 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 16:32:23,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:32:23,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 373 [2023-11-17 16:32:23,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:32:24,008 INFO L124 PetriNetUnfolderBase]: 753/1064 cut-off events. [2023-11-17 16:32:24,008 INFO L125 PetriNetUnfolderBase]: For 951/951 co-relation queries the response was YES. [2023-11-17 16:32:24,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2928 conditions, 1064 events. 753/1064 cut-off events. For 951/951 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3547 event pairs, 241 based on Foata normal form. 0/954 useless extension candidates. Maximal degree in co-relation 2899. Up to 548 conditions per place. [2023-11-17 16:32:24,015 INFO L140 encePairwiseOnDemand]: 364/373 looper letters, 53 selfloop transitions, 9 changer transitions 0/62 dead transitions. [2023-11-17 16:32:24,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 62 transitions, 360 flow [2023-11-17 16:32:24,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:32:24,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:32:24,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1116 transitions. [2023-11-17 16:32:24,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3739946380697051 [2023-11-17 16:32:24,018 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1116 transitions. [2023-11-17 16:32:24,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1116 transitions. [2023-11-17 16:32:24,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:32:24,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1116 transitions. [2023-11-17 16:32:24,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 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 16:32:24,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 373.0) internal successors, (3357), 9 states have internal predecessors, (3357), 0 states have call successors, (0), 0 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 16:32:24,025 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 373.0) internal successors, (3357), 9 states have internal predecessors, (3357), 0 states have call successors, (0), 0 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 16:32:24,025 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 124 flow. Second operand 8 states and 1116 transitions. [2023-11-17 16:32:24,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 62 transitions, 360 flow [2023-11-17 16:32:24,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 309 flow, removed 17 selfloop flow, removed 7 redundant places. [2023-11-17 16:32:24,029 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 130 flow [2023-11-17 16:32:24,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=130, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-11-17 16:32:24,029 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2023-11-17 16:32:24,029 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 130 flow [2023-11-17 16:32:24,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 136.0) internal successors, (1224), 9 states have internal predecessors, (1224), 0 states have call successors, (0), 0 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 16:32:24,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:32:24,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:32:24,037 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 16:32:24,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:24,238 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:32:24,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:32:24,238 INFO L85 PathProgramCache]: Analyzing trace with hash 746892995, now seen corresponding path program 1 times [2023-11-17 16:32:24,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:32:24,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268365415] [2023-11-17 16:32:24,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:24,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:32:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:24,327 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:32:24,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:32:24,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268365415] [2023-11-17 16:32:24,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268365415] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:32:24,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770888290] [2023-11-17 16:32:24,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:24,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:24,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:32:24,329 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 16:32:24,359 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 16:32:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:24,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 16:32:24,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:32:24,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:32:24,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:32:24,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:32:24,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770888290] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:32:24,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:32:24,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-11-17 16:32:24,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812232255] [2023-11-17 16:32:24,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:32:24,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 16:32:24,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:32:24,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 16:32:24,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:32:24,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 373 [2023-11-17 16:32:24,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 130 flow. Second operand has 9 states, 9 states have (on average 137.0) internal successors, (1233), 9 states have internal predecessors, (1233), 0 states have call successors, (0), 0 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 16:32:24,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:32:24,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 373 [2023-11-17 16:32:24,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:32:24,799 INFO L124 PetriNetUnfolderBase]: 1315/1812 cut-off events. [2023-11-17 16:32:24,800 INFO L125 PetriNetUnfolderBase]: For 1412/1412 co-relation queries the response was YES. [2023-11-17 16:32:24,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4991 conditions, 1812 events. 1315/1812 cut-off events. For 1412/1412 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6192 event pairs, 393 based on Foata normal form. 0/1564 useless extension candidates. Maximal degree in co-relation 4966. Up to 788 conditions per place. [2023-11-17 16:32:24,808 INFO L140 encePairwiseOnDemand]: 363/373 looper letters, 59 selfloop transitions, 10 changer transitions 0/69 dead transitions. [2023-11-17 16:32:24,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 400 flow [2023-11-17 16:32:24,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:32:24,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:32:24,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1126 transitions. [2023-11-17 16:32:24,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3773458445040214 [2023-11-17 16:32:24,812 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1126 transitions. [2023-11-17 16:32:24,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1126 transitions. [2023-11-17 16:32:24,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:32:24,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1126 transitions. [2023-11-17 16:32:24,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 0 states have call successors, (0), 0 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 16:32:24,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 373.0) internal successors, (3357), 9 states have internal predecessors, (3357), 0 states have call successors, (0), 0 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 16:32:24,820 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 373.0) internal successors, (3357), 9 states have internal predecessors, (3357), 0 states have call successors, (0), 0 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 16:32:24,820 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 130 flow. Second operand 8 states and 1126 transitions. [2023-11-17 16:32:24,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 400 flow [2023-11-17 16:32:24,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 69 transitions, 391 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-17 16:32:24,823 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 168 flow [2023-11-17 16:32:24,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=168, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2023-11-17 16:32:24,824 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2023-11-17 16:32:24,824 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 168 flow [2023-11-17 16:32:24,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 137.0) internal successors, (1233), 9 states have internal predecessors, (1233), 0 states have call successors, (0), 0 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 16:32:24,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:32:24,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:32:24,838 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 16:32:25,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:25,031 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:32:25,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:32:25,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1293470965, now seen corresponding path program 1 times [2023-11-17 16:32:25,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:32:25,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323704555] [2023-11-17 16:32:25,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:25,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:32:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:25,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:32:25,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:32:25,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323704555] [2023-11-17 16:32:25,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323704555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:32:25,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:32:25,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:32:25,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690002915] [2023-11-17 16:32:25,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:32:25,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:32:25,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:32:25,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:32:25,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:32:25,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 373 [2023-11-17 16:32:25,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 165.6) internal successors, (828), 5 states have internal predecessors, (828), 0 states have call successors, (0), 0 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 16:32:25,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:32:25,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 373 [2023-11-17 16:32:25,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:32:25,492 INFO L124 PetriNetUnfolderBase]: 1061/1496 cut-off events. [2023-11-17 16:32:25,492 INFO L125 PetriNetUnfolderBase]: For 1346/1346 co-relation queries the response was YES. [2023-11-17 16:32:25,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4814 conditions, 1496 events. 1061/1496 cut-off events. For 1346/1346 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4847 event pairs, 203 based on Foata normal form. 0/1400 useless extension candidates. Maximal degree in co-relation 4786. Up to 941 conditions per place. [2023-11-17 16:32:25,500 INFO L140 encePairwiseOnDemand]: 368/373 looper letters, 71 selfloop transitions, 9 changer transitions 6/86 dead transitions. [2023-11-17 16:32:25,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 86 transitions, 524 flow [2023-11-17 16:32:25,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:32:25,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:32:25,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1038 transitions. [2023-11-17 16:32:25,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46380697050938335 [2023-11-17 16:32:25,503 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1038 transitions. [2023-11-17 16:32:25,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1038 transitions. [2023-11-17 16:32:25,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:32:25,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1038 transitions. [2023-11-17 16:32:25,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 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 16:32:25,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 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 16:32:25,509 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 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 16:32:25,509 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 168 flow. Second operand 6 states and 1038 transitions. [2023-11-17 16:32:25,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 86 transitions, 524 flow [2023-11-17 16:32:25,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 86 transitions, 515 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 16:32:25,514 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 226 flow [2023-11-17 16:32:25,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2023-11-17 16:32:25,516 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2023-11-17 16:32:25,516 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 226 flow [2023-11-17 16:32:25,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 165.6) internal successors, (828), 5 states have internal predecessors, (828), 0 states have call successors, (0), 0 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 16:32:25,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:32:25,517 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:32:25,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 16:32:25,517 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:32:25,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:32:25,518 INFO L85 PathProgramCache]: Analyzing trace with hash -441471196, now seen corresponding path program 2 times [2023-11-17 16:32:25,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:32:25,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992038444] [2023-11-17 16:32:25,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:25,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:32:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:25,645 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:32:25,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:32:25,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992038444] [2023-11-17 16:32:25,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992038444] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:32:25,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603701481] [2023-11-17 16:32:25,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:32:25,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:25,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:32:25,647 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 16:32:25,650 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 16:32:25,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:32:25,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:32:25,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:32:25,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:32:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:32:25,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:32:25,909 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:32:25,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603701481] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:32:25,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:32:25,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-11-17 16:32:25,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543994333] [2023-11-17 16:32:25,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:32:25,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 16:32:25,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:32:25,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 16:32:25,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-11-17 16:32:25,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 373 [2023-11-17 16:32:25,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 226 flow. Second operand has 14 states, 14 states have (on average 135.28571428571428) internal successors, (1894), 14 states have internal predecessors, (1894), 0 states have call successors, (0), 0 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 16:32:25,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:32:25,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 373 [2023-11-17 16:32:25,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:32:26,280 INFO L124 PetriNetUnfolderBase]: 1369/1962 cut-off events. [2023-11-17 16:32:26,281 INFO L125 PetriNetUnfolderBase]: For 3240/3240 co-relation queries the response was YES. [2023-11-17 16:32:26,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6809 conditions, 1962 events. 1369/1962 cut-off events. For 3240/3240 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6648 event pairs, 730 based on Foata normal form. 28/1958 useless extension candidates. Maximal degree in co-relation 5308. Up to 1495 conditions per place. [2023-11-17 16:32:26,292 INFO L140 encePairwiseOnDemand]: 364/373 looper letters, 39 selfloop transitions, 6 changer transitions 51/96 dead transitions. [2023-11-17 16:32:26,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 96 transitions, 651 flow [2023-11-17 16:32:26,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 16:32:26,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 16:32:26,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1400 transitions. [2023-11-17 16:32:26,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3753351206434316 [2023-11-17 16:32:26,297 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1400 transitions. [2023-11-17 16:32:26,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1400 transitions. [2023-11-17 16:32:26,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:32:26,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1400 transitions. [2023-11-17 16:32:26,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 140.0) internal successors, (1400), 10 states have internal predecessors, (1400), 0 states have call successors, (0), 0 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 16:32:26,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 373.0) internal successors, (4103), 11 states have internal predecessors, (4103), 0 states have call successors, (0), 0 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 16:32:26,305 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 373.0) internal successors, (4103), 11 states have internal predecessors, (4103), 0 states have call successors, (0), 0 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 16:32:26,305 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 226 flow. Second operand 10 states and 1400 transitions. [2023-11-17 16:32:26,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 96 transitions, 651 flow [2023-11-17 16:32:26,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 96 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:32:26,315 INFO L231 Difference]: Finished difference. Result has 67 places, 45 transitions, 270 flow [2023-11-17 16:32:26,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=270, PETRI_PLACES=67, PETRI_TRANSITIONS=45} [2023-11-17 16:32:26,316 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 34 predicate places. [2023-11-17 16:32:26,316 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 45 transitions, 270 flow [2023-11-17 16:32:26,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 135.28571428571428) internal successors, (1894), 14 states have internal predecessors, (1894), 0 states have call successors, (0), 0 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 16:32:26,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:32:26,317 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:32:26,328 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 16:32:26,528 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 16:32:26,529 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:32:26,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:32:26,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1299018307, now seen corresponding path program 3 times [2023-11-17 16:32:26,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:32:26,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762030657] [2023-11-17 16:32:26,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:26,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:32:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:26,674 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-17 16:32:26,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:32:26,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762030657] [2023-11-17 16:32:26,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762030657] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:32:26,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204978675] [2023-11-17 16:32:26,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:32:26,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:26,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:32:26,676 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 16:32:26,692 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 16:32:26,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 16:32:26,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:32:26,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:32:26,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:32:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-17 16:32:26,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:32:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-17 16:32:26,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204978675] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:32:26,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:32:26,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-11-17 16:32:26,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627691341] [2023-11-17 16:32:26,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:32:26,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 16:32:26,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:32:26,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 16:32:26,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-17 16:32:26,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 373 [2023-11-17 16:32:26,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 45 transitions, 270 flow. Second operand has 14 states, 14 states have (on average 135.07142857142858) internal successors, (1891), 14 states have internal predecessors, (1891), 0 states have call successors, (0), 0 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 16:32:26,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:32:26,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 373 [2023-11-17 16:32:26,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:32:27,261 INFO L124 PetriNetUnfolderBase]: 1282/1805 cut-off events. [2023-11-17 16:32:27,262 INFO L125 PetriNetUnfolderBase]: For 3774/3774 co-relation queries the response was YES. [2023-11-17 16:32:27,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6684 conditions, 1805 events. 1282/1805 cut-off events. For 3774/3774 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 6244 event pairs, 494 based on Foata normal form. 86/1853 useless extension candidates. Maximal degree in co-relation 6640. Up to 1183 conditions per place. [2023-11-17 16:32:27,282 INFO L140 encePairwiseOnDemand]: 365/373 looper letters, 87 selfloop transitions, 9 changer transitions 0/96 dead transitions. [2023-11-17 16:32:27,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 96 transitions, 794 flow [2023-11-17 16:32:27,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 16:32:27,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 16:32:27,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1251 transitions. [2023-11-17 16:32:27,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3726541554959786 [2023-11-17 16:32:27,287 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1251 transitions. [2023-11-17 16:32:27,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1251 transitions. [2023-11-17 16:32:27,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:32:27,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1251 transitions. [2023-11-17 16:32:27,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 139.0) internal successors, (1251), 9 states have internal predecessors, (1251), 0 states have call successors, (0), 0 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 16:32:27,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 373.0) internal successors, (3730), 10 states have internal predecessors, (3730), 0 states have call successors, (0), 0 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 16:32:27,295 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 373.0) internal successors, (3730), 10 states have internal predecessors, (3730), 0 states have call successors, (0), 0 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 16:32:27,295 INFO L175 Difference]: Start difference. First operand has 67 places, 45 transitions, 270 flow. Second operand 9 states and 1251 transitions. [2023-11-17 16:32:27,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 96 transitions, 794 flow [2023-11-17 16:32:27,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 96 transitions, 744 flow, removed 23 selfloop flow, removed 6 redundant places. [2023-11-17 16:32:27,303 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 274 flow [2023-11-17 16:32:27,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=274, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2023-11-17 16:32:27,304 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 31 predicate places. [2023-11-17 16:32:27,304 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 274 flow [2023-11-17 16:32:27,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 135.07142857142858) internal successors, (1891), 14 states have internal predecessors, (1891), 0 states have call successors, (0), 0 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 16:32:27,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:32:27,305 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:32:27,314 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 16:32:27,511 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 16:32:27,511 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:32:27,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:32:27,512 INFO L85 PathProgramCache]: Analyzing trace with hash -907741299, now seen corresponding path program 4 times [2023-11-17 16:32:27,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:32:27,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268496179] [2023-11-17 16:32:27,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:27,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:32:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:27,647 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-17 16:32:27,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:32:27,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268496179] [2023-11-17 16:32:27,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268496179] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:32:27,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192495678] [2023-11-17 16:32:27,648 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:32:27,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:27,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:32:27,649 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 16:32:27,664 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 16:32:27,750 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:32:27,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:32:27,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 16:32:27,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:32:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-17 16:32:27,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:32:27,866 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-17 16:32:27,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192495678] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:32:27,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:32:27,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2023-11-17 16:32:27,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091981930] [2023-11-17 16:32:27,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:32:27,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 16:32:27,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:32:27,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 16:32:27,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-17 16:32:27,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 373 [2023-11-17 16:32:27,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 274 flow. Second operand has 12 states, 12 states have (on average 132.75) internal successors, (1593), 12 states have internal predecessors, (1593), 0 states have call successors, (0), 0 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 16:32:27,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:32:27,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 373 [2023-11-17 16:32:27,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:32:28,437 INFO L124 PetriNetUnfolderBase]: 1625/2262 cut-off events. [2023-11-17 16:32:28,437 INFO L125 PetriNetUnfolderBase]: For 4282/4282 co-relation queries the response was YES. [2023-11-17 16:32:28,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8618 conditions, 2262 events. 1625/2262 cut-off events. For 4282/4282 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7881 event pairs, 169 based on Foata normal form. 38/2224 useless extension candidates. Maximal degree in co-relation 8576. Up to 567 conditions per place. [2023-11-17 16:32:28,449 INFO L140 encePairwiseOnDemand]: 360/373 looper letters, 141 selfloop transitions, 42 changer transitions 0/183 dead transitions. [2023-11-17 16:32:28,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 183 transitions, 1386 flow [2023-11-17 16:32:28,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-17 16:32:28,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-17 16:32:28,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2455 transitions. [2023-11-17 16:32:28,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3656538576109622 [2023-11-17 16:32:28,455 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2455 transitions. [2023-11-17 16:32:28,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2455 transitions. [2023-11-17 16:32:28,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:32:28,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2455 transitions. [2023-11-17 16:32:28,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.38888888888889) internal successors, (2455), 18 states have internal predecessors, (2455), 0 states have call successors, (0), 0 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 16:32:28,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 373.0) internal successors, (7087), 19 states have internal predecessors, (7087), 0 states have call successors, (0), 0 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 16:32:28,482 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 373.0) internal successors, (7087), 19 states have internal predecessors, (7087), 0 states have call successors, (0), 0 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 16:32:28,483 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 274 flow. Second operand 18 states and 2455 transitions. [2023-11-17 16:32:28,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 183 transitions, 1386 flow [2023-11-17 16:32:28,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 183 transitions, 1342 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-17 16:32:28,502 INFO L231 Difference]: Finished difference. Result has 81 places, 74 transitions, 588 flow [2023-11-17 16:32:28,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=588, PETRI_PLACES=81, PETRI_TRANSITIONS=74} [2023-11-17 16:32:28,502 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 48 predicate places. [2023-11-17 16:32:28,502 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 74 transitions, 588 flow [2023-11-17 16:32:28,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 132.75) internal successors, (1593), 12 states have internal predecessors, (1593), 0 states have call successors, (0), 0 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 16:32:28,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:32:28,503 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:32:28,509 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 16:32:28,709 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 16:32:28,709 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:32:28,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:32:28,710 INFO L85 PathProgramCache]: Analyzing trace with hash -447516991, now seen corresponding path program 5 times [2023-11-17 16:32:28,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:32:28,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095748949] [2023-11-17 16:32:28,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:28,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:32:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:28,916 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-17 16:32:28,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:32:28,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095748949] [2023-11-17 16:32:28,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095748949] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:32:28,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263051137] [2023-11-17 16:32:28,916 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:32:28,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:28,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:32:28,918 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 16:32:28,936 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 16:32:29,047 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 16:32:29,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:32:29,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:32:29,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:32:29,116 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-17 16:32:29,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:32:29,177 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-17 16:32:29,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263051137] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:32:29,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:32:29,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-17 16:32:29,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541821075] [2023-11-17 16:32:29,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:32:29,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 16:32:29,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:32:29,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 16:32:29,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-17 16:32:29,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 373 [2023-11-17 16:32:29,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 74 transitions, 588 flow. Second operand has 13 states, 13 states have (on average 163.53846153846155) internal successors, (2126), 13 states have internal predecessors, (2126), 0 states have call successors, (0), 0 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 16:32:29,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:32:29,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 373 [2023-11-17 16:32:29,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:32:29,886 INFO L124 PetriNetUnfolderBase]: 2826/3951 cut-off events. [2023-11-17 16:32:29,887 INFO L125 PetriNetUnfolderBase]: For 10437/10437 co-relation queries the response was YES. [2023-11-17 16:32:29,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15742 conditions, 3951 events. 2826/3951 cut-off events. For 10437/10437 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 15484 event pairs, 641 based on Foata normal form. 190/4065 useless extension candidates. Maximal degree in co-relation 15694. Up to 1719 conditions per place. [2023-11-17 16:32:29,911 INFO L140 encePairwiseOnDemand]: 366/373 looper letters, 192 selfloop transitions, 36 changer transitions 16/244 dead transitions. [2023-11-17 16:32:29,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 244 transitions, 2019 flow [2023-11-17 16:32:29,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 16:32:29,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 16:32:29,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2405 transitions. [2023-11-17 16:32:29,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605515128303332 [2023-11-17 16:32:29,917 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2405 transitions. [2023-11-17 16:32:29,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2405 transitions. [2023-11-17 16:32:29,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:32:29,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2405 transitions. [2023-11-17 16:32:29,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 171.78571428571428) internal successors, (2405), 14 states have internal predecessors, (2405), 0 states have call successors, (0), 0 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 16:32:29,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 373.0) internal successors, (5595), 15 states have internal predecessors, (5595), 0 states have call successors, (0), 0 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 16:32:29,929 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 373.0) internal successors, (5595), 15 states have internal predecessors, (5595), 0 states have call successors, (0), 0 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 16:32:29,929 INFO L175 Difference]: Start difference. First operand has 81 places, 74 transitions, 588 flow. Second operand 14 states and 2405 transitions. [2023-11-17 16:32:29,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 244 transitions, 2019 flow [2023-11-17 16:32:29,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 244 transitions, 1894 flow, removed 28 selfloop flow, removed 7 redundant places. [2023-11-17 16:32:29,970 INFO L231 Difference]: Finished difference. Result has 98 places, 98 transitions, 903 flow [2023-11-17 16:32:29,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=903, PETRI_PLACES=98, PETRI_TRANSITIONS=98} [2023-11-17 16:32:29,970 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 65 predicate places. [2023-11-17 16:32:29,970 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 98 transitions, 903 flow [2023-11-17 16:32:29,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 163.53846153846155) internal successors, (2126), 13 states have internal predecessors, (2126), 0 states have call successors, (0), 0 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 16:32:29,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:32:29,971 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:32:29,980 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 16:32:30,181 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 16:32:30,181 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:32:30,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:32:30,181 INFO L85 PathProgramCache]: Analyzing trace with hash 177303863, now seen corresponding path program 6 times [2023-11-17 16:32:30,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:32:30,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749078369] [2023-11-17 16:32:30,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:30,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:32:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:30,377 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-17 16:32:30,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:32:30,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749078369] [2023-11-17 16:32:30,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749078369] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:32:30,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566223742] [2023-11-17 16:32:30,377 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:32:30,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:30,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:32:30,379 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 16:32:30,399 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 16:32:30,692 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 16:32:30,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:32:30,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:32:30,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:32:30,758 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-17 16:32:30,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:32:30,812 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-17 16:32:30,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566223742] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:32:30,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:32:30,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-11-17 16:32:30,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312209866] [2023-11-17 16:32:30,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:32:30,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 16:32:30,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:32:30,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 16:32:30,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-17 16:32:30,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 373 [2023-11-17 16:32:30,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 98 transitions, 903 flow. Second operand has 11 states, 11 states have (on average 164.0) internal successors, (1804), 11 states have internal predecessors, (1804), 0 states have call successors, (0), 0 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 16:32:30,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:32:30,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 373 [2023-11-17 16:32:30,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:32:31,626 INFO L124 PetriNetUnfolderBase]: 3302/4619 cut-off events. [2023-11-17 16:32:31,626 INFO L125 PetriNetUnfolderBase]: For 25057/25057 co-relation queries the response was YES. [2023-11-17 16:32:31,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23813 conditions, 4619 events. 3302/4619 cut-off events. For 25057/25057 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 18368 event pairs, 339 based on Foata normal form. 38/4657 useless extension candidates. Maximal degree in co-relation 23759. Up to 1541 conditions per place. [2023-11-17 16:32:31,665 INFO L140 encePairwiseOnDemand]: 366/373 looper letters, 175 selfloop transitions, 51 changer transitions 15/241 dead transitions. [2023-11-17 16:32:31,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 241 transitions, 2219 flow [2023-11-17 16:32:31,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 16:32:31,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 16:32:31,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2234 transitions. [2023-11-17 16:32:31,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46071354918539903 [2023-11-17 16:32:31,674 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2234 transitions. [2023-11-17 16:32:31,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2234 transitions. [2023-11-17 16:32:31,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:32:31,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2234 transitions. [2023-11-17 16:32:31,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 171.84615384615384) internal successors, (2234), 13 states have internal predecessors, (2234), 0 states have call successors, (0), 0 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 16:32:31,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 373.0) internal successors, (5222), 14 states have internal predecessors, (5222), 0 states have call successors, (0), 0 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 16:32:31,689 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 373.0) internal successors, (5222), 14 states have internal predecessors, (5222), 0 states have call successors, (0), 0 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 16:32:31,689 INFO L175 Difference]: Start difference. First operand has 98 places, 98 transitions, 903 flow. Second operand 13 states and 2234 transitions. [2023-11-17 16:32:31,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 241 transitions, 2219 flow [2023-11-17 16:32:31,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 241 transitions, 2205 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-11-17 16:32:31,759 INFO L231 Difference]: Finished difference. Result has 114 places, 111 transitions, 1199 flow [2023-11-17 16:32:31,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1199, PETRI_PLACES=114, PETRI_TRANSITIONS=111} [2023-11-17 16:32:31,759 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 81 predicate places. [2023-11-17 16:32:31,759 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 111 transitions, 1199 flow [2023-11-17 16:32:31,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 164.0) internal successors, (1804), 11 states have internal predecessors, (1804), 0 states have call successors, (0), 0 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 16:32:31,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:32:31,760 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:32:31,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-17 16:32:31,964 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 16:32:31,964 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:32:31,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:32:31,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1146961962, now seen corresponding path program 7 times [2023-11-17 16:32:31,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:32:31,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093137033] [2023-11-17 16:32:31,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:31,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:32:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-17 16:32:32,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:32:32,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093137033] [2023-11-17 16:32:32,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093137033] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:32:32,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100323492] [2023-11-17 16:32:32,138 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:32:32,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:32,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:32:32,139 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 16:32:32,163 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 16:32:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:32,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:32:32,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:32:32,382 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-17 16:32:32,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:32:32,472 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-17 16:32:32,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100323492] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:32:32,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:32:32,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-11-17 16:32:32,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231729279] [2023-11-17 16:32:32,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:32:32,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-17 16:32:32,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:32:32,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-17 16:32:32,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2023-11-17 16:32:32,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 373 [2023-11-17 16:32:32,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 111 transitions, 1199 flow. Second operand has 19 states, 19 states have (on average 134.78947368421052) internal successors, (2561), 19 states have internal predecessors, (2561), 0 states have call successors, (0), 0 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 16:32:32,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:32:32,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 373 [2023-11-17 16:32:32,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:32:33,489 INFO L124 PetriNetUnfolderBase]: 4693/6659 cut-off events. [2023-11-17 16:32:33,490 INFO L125 PetriNetUnfolderBase]: For 47627/47627 co-relation queries the response was YES. [2023-11-17 16:32:33,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36458 conditions, 6659 events. 4693/6659 cut-off events. For 47627/47627 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 29295 event pairs, 1877 based on Foata normal form. 142/6801 useless extension candidates. Maximal degree in co-relation 33911. Up to 4616 conditions per place. [2023-11-17 16:32:33,534 INFO L140 encePairwiseOnDemand]: 364/373 looper letters, 105 selfloop transitions, 8 changer transitions 132/245 dead transitions. [2023-11-17 16:32:33,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 245 transitions, 2952 flow [2023-11-17 16:32:33,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 16:32:33,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 16:32:33,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1815 transitions. [2023-11-17 16:32:33,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37430398020210354 [2023-11-17 16:32:33,538 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1815 transitions. [2023-11-17 16:32:33,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1815 transitions. [2023-11-17 16:32:33,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:32:33,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1815 transitions. [2023-11-17 16:32:33,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 139.6153846153846) internal successors, (1815), 13 states have internal predecessors, (1815), 0 states have call successors, (0), 0 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 16:32:33,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 373.0) internal successors, (5222), 14 states have internal predecessors, (5222), 0 states have call successors, (0), 0 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 16:32:33,547 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 373.0) internal successors, (5222), 14 states have internal predecessors, (5222), 0 states have call successors, (0), 0 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 16:32:33,548 INFO L175 Difference]: Start difference. First operand has 114 places, 111 transitions, 1199 flow. Second operand 13 states and 1815 transitions. [2023-11-17 16:32:33,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 245 transitions, 2952 flow [2023-11-17 16:32:33,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 245 transitions, 2886 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-11-17 16:32:33,779 INFO L231 Difference]: Finished difference. Result has 129 places, 113 transitions, 1235 flow [2023-11-17 16:32:33,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1235, PETRI_PLACES=129, PETRI_TRANSITIONS=113} [2023-11-17 16:32:33,780 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 96 predicate places. [2023-11-17 16:32:33,781 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 113 transitions, 1235 flow [2023-11-17 16:32:33,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 134.78947368421052) internal successors, (2561), 19 states have internal predecessors, (2561), 0 states have call successors, (0), 0 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 16:32:33,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:32:33,782 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:32:33,790 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 16:32:33,987 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 16:32:33,988 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:32:33,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:32:33,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1617725159, now seen corresponding path program 8 times [2023-11-17 16:32:33,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:32:33,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361264823] [2023-11-17 16:32:33,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:33,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:32:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:34,163 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-17 16:32:34,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:32:34,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361264823] [2023-11-17 16:32:34,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361264823] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:32:34,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874068192] [2023-11-17 16:32:34,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:32:34,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:34,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:32:34,165 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 16:32:34,185 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 16:32:34,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:32:34,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:32:34,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:32:34,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:32:34,421 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-17 16:32:34,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:32:34,497 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-17 16:32:34,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874068192] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:32:34,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:32:34,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-11-17 16:32:34,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337747767] [2023-11-17 16:32:34,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:32:34,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-17 16:32:34,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:32:34,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-17 16:32:34,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-11-17 16:32:34,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 373 [2023-11-17 16:32:34,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 113 transitions, 1235 flow. Second operand has 19 states, 19 states have (on average 134.6315789473684) internal successors, (2558), 19 states have internal predecessors, (2558), 0 states have call successors, (0), 0 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 16:32:34,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:32:34,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 373 [2023-11-17 16:32:34,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:32:35,394 INFO L124 PetriNetUnfolderBase]: 3865/5398 cut-off events. [2023-11-17 16:32:35,394 INFO L125 PetriNetUnfolderBase]: For 43586/43586 co-relation queries the response was YES. [2023-11-17 16:32:35,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30399 conditions, 5398 events. 3865/5398 cut-off events. For 43586/43586 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 22535 event pairs, 1060 based on Foata normal form. 214/5612 useless extension candidates. Maximal degree in co-relation 30320. Up to 3057 conditions per place. [2023-11-17 16:32:35,495 INFO L140 encePairwiseOnDemand]: 365/373 looper letters, 255 selfloop transitions, 18 changer transitions 0/273 dead transitions. [2023-11-17 16:32:35,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 273 transitions, 3701 flow [2023-11-17 16:32:35,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 16:32:35,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 16:32:35,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1664 transitions. [2023-11-17 16:32:35,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3717605004468275 [2023-11-17 16:32:35,502 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1664 transitions. [2023-11-17 16:32:35,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1664 transitions. [2023-11-17 16:32:35,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:32:35,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1664 transitions. [2023-11-17 16:32:35,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 138.66666666666666) internal successors, (1664), 12 states have internal predecessors, (1664), 0 states have call successors, (0), 0 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 16:32:35,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 373.0) internal successors, (4849), 13 states have internal predecessors, (4849), 0 states have call successors, (0), 0 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 16:32:35,513 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 373.0) internal successors, (4849), 13 states have internal predecessors, (4849), 0 states have call successors, (0), 0 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 16:32:35,513 INFO L175 Difference]: Start difference. First operand has 129 places, 113 transitions, 1235 flow. Second operand 12 states and 1664 transitions. [2023-11-17 16:32:35,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 273 transitions, 3701 flow [2023-11-17 16:32:35,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 273 transitions, 3555 flow, removed 67 selfloop flow, removed 9 redundant places. [2023-11-17 16:32:35,622 INFO L231 Difference]: Finished difference. Result has 124 places, 114 transitions, 1235 flow [2023-11-17 16:32:35,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=1179, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1235, PETRI_PLACES=124, PETRI_TRANSITIONS=114} [2023-11-17 16:32:35,624 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 91 predicate places. [2023-11-17 16:32:35,624 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 114 transitions, 1235 flow [2023-11-17 16:32:35,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 134.6315789473684) internal successors, (2558), 19 states have internal predecessors, (2558), 0 states have call successors, (0), 0 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 16:32:35,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:32:35,625 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:32:35,636 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 16:32:35,831 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 16:32:35,831 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:32:35,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:32:35,831 INFO L85 PathProgramCache]: Analyzing trace with hash -2111743057, now seen corresponding path program 9 times [2023-11-17 16:32:35,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:32:35,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076270777] [2023-11-17 16:32:35,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:35,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:32:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:36,026 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-17 16:32:36,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:32:36,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076270777] [2023-11-17 16:32:36,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076270777] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:32:36,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063249344] [2023-11-17 16:32:36,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:32:36,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:36,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:32:36,029 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 16:32:36,051 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 16:32:36,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 16:32:36,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:32:36,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:32:36,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:32:36,319 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-17 16:32:36,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:32:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-17 16:32:36,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063249344] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:32:36,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:32:36,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-11-17 16:32:36,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638937337] [2023-11-17 16:32:36,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:32:36,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-17 16:32:36,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:32:36,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-17 16:32:36,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-11-17 16:32:36,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 373 [2023-11-17 16:32:36,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 114 transitions, 1235 flow. Second operand has 19 states, 19 states have (on average 135.57894736842104) internal successors, (2576), 19 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 16:32:36,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:32:36,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 373 [2023-11-17 16:32:36,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:32:37,287 INFO L124 PetriNetUnfolderBase]: 4369/6078 cut-off events. [2023-11-17 16:32:37,287 INFO L125 PetriNetUnfolderBase]: For 43269/43269 co-relation queries the response was YES. [2023-11-17 16:32:37,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34769 conditions, 6078 events. 4369/6078 cut-off events. For 43269/43269 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 24522 event pairs, 643 based on Foata normal form. 44/6122 useless extension candidates. Maximal degree in co-relation 34696. Up to 2354 conditions per place. [2023-11-17 16:32:37,332 INFO L140 encePairwiseOnDemand]: 363/373 looper letters, 139 selfloop transitions, 47 changer transitions 0/186 dead transitions. [2023-11-17 16:32:37,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 186 transitions, 2192 flow [2023-11-17 16:32:37,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 16:32:37,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 16:32:37,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1820 transitions. [2023-11-17 16:32:37,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3753351206434316 [2023-11-17 16:32:37,336 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1820 transitions. [2023-11-17 16:32:37,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1820 transitions. [2023-11-17 16:32:37,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:32:37,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1820 transitions. [2023-11-17 16:32:37,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 140.0) internal successors, (1820), 13 states have internal predecessors, (1820), 0 states have call successors, (0), 0 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 16:32:37,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 373.0) internal successors, (5222), 14 states have internal predecessors, (5222), 0 states have call successors, (0), 0 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 16:32:37,345 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 373.0) internal successors, (5222), 14 states have internal predecessors, (5222), 0 states have call successors, (0), 0 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 16:32:37,345 INFO L175 Difference]: Start difference. First operand has 124 places, 114 transitions, 1235 flow. Second operand 13 states and 1820 transitions. [2023-11-17 16:32:37,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 186 transitions, 2192 flow [2023-11-17 16:32:37,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 186 transitions, 2108 flow, removed 17 selfloop flow, removed 9 redundant places. [2023-11-17 16:32:37,496 INFO L231 Difference]: Finished difference. Result has 129 places, 123 transitions, 1437 flow [2023-11-17 16:32:37,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1437, PETRI_PLACES=129, PETRI_TRANSITIONS=123} [2023-11-17 16:32:37,497 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 96 predicate places. [2023-11-17 16:32:37,497 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 123 transitions, 1437 flow [2023-11-17 16:32:37,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 135.57894736842104) internal successors, (2576), 19 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 16:32:37,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:32:37,498 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:32:37,507 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 16:32:37,704 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 16:32:37,705 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:32:37,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:32:37,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1860731367, now seen corresponding path program 10 times [2023-11-17 16:32:37,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:32:37,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752421898] [2023-11-17 16:32:37,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:37,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:32:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:37,958 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-17 16:32:37,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:32:37,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752421898] [2023-11-17 16:32:37,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752421898] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:32:37,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043824767] [2023-11-17 16:32:37,959 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:32:37,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:37,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:32:37,960 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 16:32:37,963 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 16:32:38,413 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:32:38,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:32:38,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:32:38,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:32:38,490 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-17 16:32:38,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:32:38,550 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-17 16:32:38,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043824767] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:32:38,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:32:38,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-11-17 16:32:38,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516274563] [2023-11-17 16:32:38,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:32:38,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 16:32:38,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:32:38,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 16:32:38,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-11-17 16:32:38,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 373 [2023-11-17 16:32:38,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 123 transitions, 1437 flow. Second operand has 14 states, 14 states have (on average 163.78571428571428) internal successors, (2293), 14 states have internal predecessors, (2293), 0 states have call successors, (0), 0 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 16:32:38,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:32:38,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 373 [2023-11-17 16:32:38,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:32:39,995 INFO L124 PetriNetUnfolderBase]: 5969/8286 cut-off events. [2023-11-17 16:32:39,995 INFO L125 PetriNetUnfolderBase]: For 57302/57302 co-relation queries the response was YES. [2023-11-17 16:32:40,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47061 conditions, 8286 events. 5969/8286 cut-off events. For 57302/57302 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 35175 event pairs, 497 based on Foata normal form. 44/8330 useless extension candidates. Maximal degree in co-relation 46987. Up to 2243 conditions per place. [2023-11-17 16:32:40,058 INFO L140 encePairwiseOnDemand]: 365/373 looper letters, 290 selfloop transitions, 81 changer transitions 56/427 dead transitions. [2023-11-17 16:32:40,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 427 transitions, 4543 flow [2023-11-17 16:32:40,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-17 16:32:40,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-17 16:32:40,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3777 transitions. [2023-11-17 16:32:40,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46027297099683157 [2023-11-17 16:32:40,064 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3777 transitions. [2023-11-17 16:32:40,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3777 transitions. [2023-11-17 16:32:40,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:32:40,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3777 transitions. [2023-11-17 16:32:40,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.6818181818182) internal successors, (3777), 22 states have internal predecessors, (3777), 0 states have call successors, (0), 0 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 16:32:40,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 373.0) internal successors, (8579), 23 states have internal predecessors, (8579), 0 states have call successors, (0), 0 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 16:32:40,076 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 373.0) internal successors, (8579), 23 states have internal predecessors, (8579), 0 states have call successors, (0), 0 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 16:32:40,076 INFO L175 Difference]: Start difference. First operand has 129 places, 123 transitions, 1437 flow. Second operand 22 states and 3777 transitions. [2023-11-17 16:32:40,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 427 transitions, 4543 flow [2023-11-17 16:32:40,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 427 transitions, 4453 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-11-17 16:32:40,312 INFO L231 Difference]: Finished difference. Result has 152 places, 153 transitions, 2099 flow [2023-11-17 16:32:40,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=1386, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2099, PETRI_PLACES=152, PETRI_TRANSITIONS=153} [2023-11-17 16:32:40,312 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 119 predicate places. [2023-11-17 16:32:40,313 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 153 transitions, 2099 flow [2023-11-17 16:32:40,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 163.78571428571428) internal successors, (2293), 14 states have internal predecessors, (2293), 0 states have call successors, (0), 0 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 16:32:40,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:32:40,313 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:32:40,320 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 16:32:40,520 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 16:32:40,520 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:32:40,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:32:40,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1082405096, now seen corresponding path program 11 times [2023-11-17 16:32:40,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:32:40,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962668917] [2023-11-17 16:32:40,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:40,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:32:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-17 16:32:40,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:32:40,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962668917] [2023-11-17 16:32:40,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962668917] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:32:40,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064394502] [2023-11-17 16:32:40,715 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:32:40,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:40,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:32:40,716 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 16:32:40,738 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 16:32:40,984 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-11-17 16:32:40,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:32:40,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 16:32:40,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:32:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-17 16:32:41,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:32:41,264 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-17 16:32:41,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064394502] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:32:41,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:32:41,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2023-11-17 16:32:41,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012735482] [2023-11-17 16:32:41,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:32:41,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-17 16:32:41,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:32:41,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-17 16:32:41,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2023-11-17 16:32:41,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 373 [2023-11-17 16:32:41,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 153 transitions, 2099 flow. Second operand has 24 states, 24 states have (on average 134.58333333333334) internal successors, (3230), 24 states have internal predecessors, (3230), 0 states have call successors, (0), 0 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 16:32:41,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:32:41,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 373 [2023-11-17 16:32:41,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:32:42,921 INFO L124 PetriNetUnfolderBase]: 8081/11304 cut-off events. [2023-11-17 16:32:42,921 INFO L125 PetriNetUnfolderBase]: For 126450/126450 co-relation queries the response was YES. [2023-11-17 16:32:42,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71296 conditions, 11304 events. 8081/11304 cut-off events. For 126450/126450 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 51698 event pairs, 3178 based on Foata normal form. 152/11456 useless extension candidates. Maximal degree in co-relation 66758. Up to 7469 conditions per place. [2023-11-17 16:32:42,988 INFO L140 encePairwiseOnDemand]: 364/373 looper letters, 145 selfloop transitions, 10 changer transitions 198/353 dead transitions. [2023-11-17 16:32:42,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 353 transitions, 5083 flow [2023-11-17 16:32:42,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 16:32:42,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 16:32:42,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2228 transitions. [2023-11-17 16:32:42,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37332439678284185 [2023-11-17 16:32:42,991 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2228 transitions. [2023-11-17 16:32:42,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2228 transitions. [2023-11-17 16:32:42,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:32:42,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2228 transitions. [2023-11-17 16:32:42,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 139.25) internal successors, (2228), 16 states have internal predecessors, (2228), 0 states have call successors, (0), 0 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 16:32:42,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 373.0) internal successors, (6341), 17 states have internal predecessors, (6341), 0 states have call successors, (0), 0 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 16:32:42,999 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 373.0) internal successors, (6341), 17 states have internal predecessors, (6341), 0 states have call successors, (0), 0 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 16:32:42,999 INFO L175 Difference]: Start difference. First operand has 152 places, 153 transitions, 2099 flow. Second operand 16 states and 2228 transitions. [2023-11-17 16:32:42,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 353 transitions, 5083 flow [2023-11-17 16:32:43,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 353 transitions, 4875 flow, removed 55 selfloop flow, removed 7 redundant places. [2023-11-17 16:32:43,608 INFO L231 Difference]: Finished difference. Result has 167 places, 155 transitions, 2096 flow [2023-11-17 16:32:43,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=1994, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2096, PETRI_PLACES=167, PETRI_TRANSITIONS=155} [2023-11-17 16:32:43,608 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 134 predicate places. [2023-11-17 16:32:43,608 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 155 transitions, 2096 flow [2023-11-17 16:32:43,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 134.58333333333334) internal successors, (3230), 24 states have internal predecessors, (3230), 0 states have call successors, (0), 0 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 16:32:43,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:32:43,609 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:32:43,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-17 16:32:43,809 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 16:32:43,810 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:32:43,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:32:43,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1135172471, now seen corresponding path program 12 times [2023-11-17 16:32:43,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:32:43,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967321749] [2023-11-17 16:32:43,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:43,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:32:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:44,021 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-17 16:32:44,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:32:44,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967321749] [2023-11-17 16:32:44,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967321749] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:32:44,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354207897] [2023-11-17 16:32:44,021 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:32:44,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:44,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:32:44,022 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 16:32:44,045 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 16:32:44,256 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-17 16:32:44,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:32:44,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 16:32:44,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:32:44,395 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-17 16:32:44,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:32:44,488 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-17 16:32:44,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354207897] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:32:44,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:32:44,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2023-11-17 16:32:44,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498553928] [2023-11-17 16:32:44,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:32:44,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-17 16:32:44,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:32:44,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-17 16:32:44,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2023-11-17 16:32:44,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 373 [2023-11-17 16:32:44,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 155 transitions, 2096 flow. Second operand has 24 states, 24 states have (on average 134.41666666666666) internal successors, (3226), 24 states have internal predecessors, (3226), 0 states have call successors, (0), 0 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 16:32:44,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:32:44,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 373 [2023-11-17 16:32:44,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:32:45,771 INFO L124 PetriNetUnfolderBase]: 6179/8554 cut-off events. [2023-11-17 16:32:45,771 INFO L125 PetriNetUnfolderBase]: For 112500/112500 co-relation queries the response was YES. [2023-11-17 16:32:45,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55255 conditions, 8554 events. 6179/8554 cut-off events. For 112500/112500 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 37422 event pairs, 1401 based on Foata normal form. 292/8846 useless extension candidates. Maximal degree in co-relation 55152. Up to 4230 conditions per place. [2023-11-17 16:32:45,839 INFO L140 encePairwiseOnDemand]: 365/373 looper letters, 435 selfloop transitions, 21 changer transitions 0/456 dead transitions. [2023-11-17 16:32:45,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 456 transitions, 7354 flow [2023-11-17 16:32:45,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 16:32:45,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 16:32:45,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2077 transitions. [2023-11-17 16:32:45,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712243074173369 [2023-11-17 16:32:45,842 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2077 transitions. [2023-11-17 16:32:45,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2077 transitions. [2023-11-17 16:32:45,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:32:45,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2077 transitions. [2023-11-17 16:32:45,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 138.46666666666667) internal successors, (2077), 15 states have internal predecessors, (2077), 0 states have call successors, (0), 0 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 16:32:45,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 373.0) internal successors, (5968), 16 states have internal predecessors, (5968), 0 states have call successors, (0), 0 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 16:32:45,850 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 373.0) internal successors, (5968), 16 states have internal predecessors, (5968), 0 states have call successors, (0), 0 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 16:32:45,850 INFO L175 Difference]: Start difference. First operand has 167 places, 155 transitions, 2096 flow. Second operand 15 states and 2077 transitions. [2023-11-17 16:32:45,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 456 transitions, 7354 flow [2023-11-17 16:32:46,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 456 transitions, 7070 flow, removed 134 selfloop flow, removed 11 redundant places. [2023-11-17 16:32:46,121 INFO L231 Difference]: Finished difference. Result has 161 places, 156 transitions, 2076 flow [2023-11-17 16:32:46,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=2012, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2076, PETRI_PLACES=161, PETRI_TRANSITIONS=156} [2023-11-17 16:32:46,122 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 128 predicate places. [2023-11-17 16:32:46,122 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 156 transitions, 2076 flow [2023-11-17 16:32:46,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 134.41666666666666) internal successors, (3226), 24 states have internal predecessors, (3226), 0 states have call successors, (0), 0 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 16:32:46,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:32:46,123 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:32:46,129 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 16:32:46,329 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 16:32:46,329 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:32:46,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:32:46,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1038164773, now seen corresponding path program 13 times [2023-11-17 16:32:46,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:32:46,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985374949] [2023-11-17 16:32:46,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:46,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:32:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-17 16:32:46,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:32:46,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985374949] [2023-11-17 16:32:46,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985374949] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:32:46,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670311129] [2023-11-17 16:32:46,549 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:32:46,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:46,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:32:46,551 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:32:46,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-17 16:32:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:46,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 16:32:46,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:32:46,890 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-17 16:32:46,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:32:47,044 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-17 16:32:47,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670311129] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:32:47,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:32:47,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2023-11-17 16:32:47,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978527147] [2023-11-17 16:32:47,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:32:47,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-17 16:32:47,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:32:47,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-17 16:32:47,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2023-11-17 16:32:47,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 373 [2023-11-17 16:32:47,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 156 transitions, 2076 flow. Second operand has 24 states, 24 states have (on average 135.33333333333334) internal successors, (3248), 24 states have internal predecessors, (3248), 0 states have call successors, (0), 0 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 16:32:47,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:32:47,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 373 [2023-11-17 16:32:47,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:32:48,256 INFO L124 PetriNetUnfolderBase]: 6755/9330 cut-off events. [2023-11-17 16:32:48,256 INFO L125 PetriNetUnfolderBase]: For 103911/103911 co-relation queries the response was YES. [2023-11-17 16:32:48,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61212 conditions, 9330 events. 6755/9330 cut-off events. For 103911/103911 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 38940 event pairs, 838 based on Foata normal form. 50/9380 useless extension candidates. Maximal degree in co-relation 61117. Up to 3096 conditions per place. [2023-11-17 16:32:48,334 INFO L140 encePairwiseOnDemand]: 363/373 looper letters, 190 selfloop transitions, 64 changer transitions 0/254 dead transitions. [2023-11-17 16:32:48,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 254 transitions, 3530 flow [2023-11-17 16:32:48,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 16:32:48,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 16:32:48,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2235 transitions. [2023-11-17 16:32:48,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37449731903485256 [2023-11-17 16:32:48,338 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2235 transitions. [2023-11-17 16:32:48,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2235 transitions. [2023-11-17 16:32:48,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:32:48,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2235 transitions. [2023-11-17 16:32:48,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 139.6875) internal successors, (2235), 16 states have internal predecessors, (2235), 0 states have call successors, (0), 0 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 16:32:48,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 373.0) internal successors, (6341), 17 states have internal predecessors, (6341), 0 states have call successors, (0), 0 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 16:32:48,346 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 373.0) internal successors, (6341), 17 states have internal predecessors, (6341), 0 states have call successors, (0), 0 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 16:32:48,346 INFO L175 Difference]: Start difference. First operand has 161 places, 156 transitions, 2076 flow. Second operand 16 states and 2235 transitions. [2023-11-17 16:32:48,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 254 transitions, 3530 flow [2023-11-17 16:32:48,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 254 transitions, 3402 flow, removed 26 selfloop flow, removed 12 redundant places. [2023-11-17 16:32:48,713 INFO L231 Difference]: Finished difference. Result has 166 places, 165 transitions, 2343 flow [2023-11-17 16:32:48,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=2024, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2343, PETRI_PLACES=166, PETRI_TRANSITIONS=165} [2023-11-17 16:32:48,713 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 133 predicate places. [2023-11-17 16:32:48,713 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 165 transitions, 2343 flow [2023-11-17 16:32:48,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 135.33333333333334) internal successors, (3248), 24 states have internal predecessors, (3248), 0 states have call successors, (0), 0 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 16:32:48,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:32:48,714 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:32:48,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-17 16:32:48,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:48,915 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:32:48,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:32:48,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1154772537, now seen corresponding path program 14 times [2023-11-17 16:32:48,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:32:48,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106409616] [2023-11-17 16:32:48,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:48,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:32:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 17 proven. 23 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-17 16:32:49,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:32:49,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106409616] [2023-11-17 16:32:49,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106409616] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:32:49,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762438700] [2023-11-17 16:32:49,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:32:49,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:49,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:32:49,215 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:32:49,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-17 16:32:49,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:32:49,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:32:49,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 16:32:49,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:32:49,529 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 22 proven. 18 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-17 16:32:49,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:32:49,615 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 22 proven. 18 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-17 16:32:49,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762438700] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:32:49,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:32:49,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2023-11-17 16:32:49,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978833286] [2023-11-17 16:32:49,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:32:49,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 16:32:49,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:32:49,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 16:32:49,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-11-17 16:32:49,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 373 [2023-11-17 16:32:49,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 165 transitions, 2343 flow. Second operand has 17 states, 17 states have (on average 163.41176470588235) internal successors, (2778), 17 states have internal predecessors, (2778), 0 states have call successors, (0), 0 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 16:32:49,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:32:49,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 373 [2023-11-17 16:32:49,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:32:52,078 INFO L124 PetriNetUnfolderBase]: 9450/13017 cut-off events. [2023-11-17 16:32:52,078 INFO L125 PetriNetUnfolderBase]: For 143877/143877 co-relation queries the response was YES. [2023-11-17 16:32:52,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85123 conditions, 13017 events. 9450/13017 cut-off events. For 143877/143877 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 57461 event pairs, 640 based on Foata normal form. 50/13067 useless extension candidates. Maximal degree in co-relation 85027. Up to 3521 conditions per place. [2023-11-17 16:32:52,172 INFO L140 encePairwiseOnDemand]: 365/373 looper letters, 463 selfloop transitions, 126 changer transitions 92/681 dead transitions. [2023-11-17 16:32:52,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 681 transitions, 8076 flow [2023-11-17 16:32:52,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-17 16:32:52,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-11-17 16:32:52,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5828 transitions. [2023-11-17 16:32:52,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45954896703989906 [2023-11-17 16:32:52,180 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5828 transitions. [2023-11-17 16:32:52,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5828 transitions. [2023-11-17 16:32:52,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:32:52,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5828 transitions. [2023-11-17 16:32:52,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 171.41176470588235) internal successors, (5828), 34 states have internal predecessors, (5828), 0 states have call successors, (0), 0 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 16:32:52,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 373.0) internal successors, (13055), 35 states have internal predecessors, (13055), 0 states have call successors, (0), 0 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 16:32:52,489 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 373.0) internal successors, (13055), 35 states have internal predecessors, (13055), 0 states have call successors, (0), 0 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 16:32:52,489 INFO L175 Difference]: Start difference. First operand has 166 places, 165 transitions, 2343 flow. Second operand 34 states and 5828 transitions. [2023-11-17 16:32:52,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 681 transitions, 8076 flow [2023-11-17 16:32:52,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 681 transitions, 7937 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-17 16:32:52,944 INFO L231 Difference]: Finished difference. Result has 202 places, 210 transitions, 3442 flow [2023-11-17 16:32:52,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=2261, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3442, PETRI_PLACES=202, PETRI_TRANSITIONS=210} [2023-11-17 16:32:52,944 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 169 predicate places. [2023-11-17 16:32:52,944 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 210 transitions, 3442 flow [2023-11-17 16:32:52,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 163.41176470588235) internal successors, (2778), 17 states have internal predecessors, (2778), 0 states have call successors, (0), 0 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 16:32:52,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:32:52,945 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:32:52,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-17 16:32:53,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:53,145 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:32:53,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:32:53,146 INFO L85 PathProgramCache]: Analyzing trace with hash 610476392, now seen corresponding path program 15 times [2023-11-17 16:32:53,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:32:53,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154374523] [2023-11-17 16:32:53,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:32:53,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:32:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:32:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 16:32:53,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:32:53,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154374523] [2023-11-17 16:32:53,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154374523] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:32:53,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026482085] [2023-11-17 16:32:53,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:32:53,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:32:53,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:32:53,379 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:32:53,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-17 16:32:53,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 16:32:53,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:32:53,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 16:32:53,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:32:53,709 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-17 16:32:53,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:32:53,783 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-17 16:32:53,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026482085] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:32:53,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:32:53,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 17 [2023-11-17 16:32:53,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611081411] [2023-11-17 16:32:53,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:32:53,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 16:32:53,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:32:53,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 16:32:53,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-11-17 16:32:53,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 373 [2023-11-17 16:32:53,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 210 transitions, 3442 flow. Second operand has 17 states, 17 states have (on average 131.0) internal successors, (2227), 17 states have internal predecessors, (2227), 0 states have call successors, (0), 0 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 16:32:53,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:32:53,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 373 [2023-11-17 16:32:53,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:32:58,128 INFO L124 PetriNetUnfolderBase]: 14837/20486 cut-off events. [2023-11-17 16:32:58,128 INFO L125 PetriNetUnfolderBase]: For 357474/357474 co-relation queries the response was YES. [2023-11-17 16:32:58,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145456 conditions, 20486 events. 14837/20486 cut-off events. For 357474/357474 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 98469 event pairs, 203 based on Foata normal form. 304/20790 useless extension candidates. Maximal degree in co-relation 135235. Up to 5789 conditions per place. [2023-11-17 16:32:58,228 INFO L140 encePairwiseOnDemand]: 359/373 looper letters, 0 selfloop transitions, 0 changer transitions 1150/1150 dead transitions. [2023-11-17 16:32:58,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 1150 transitions, 16706 flow [2023-11-17 16:32:58,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-17 16:32:58,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-11-17 16:32:58,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 6367 transitions. [2023-11-17 16:32:58,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3631852147624208 [2023-11-17 16:32:58,236 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 6367 transitions. [2023-11-17 16:32:58,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 6367 transitions. [2023-11-17 16:32:58,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:32:58,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 6367 transitions. [2023-11-17 16:32:58,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 135.46808510638297) internal successors, (6367), 47 states have internal predecessors, (6367), 0 states have call successors, (0), 0 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 16:32:58,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 373.0) internal successors, (17904), 48 states have internal predecessors, (17904), 0 states have call successors, (0), 0 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 16:32:58,256 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 373.0) internal successors, (17904), 48 states have internal predecessors, (17904), 0 states have call successors, (0), 0 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 16:32:58,256 INFO L175 Difference]: Start difference. First operand has 202 places, 210 transitions, 3442 flow. Second operand 47 states and 6367 transitions. [2023-11-17 16:32:58,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 1150 transitions, 16706 flow [2023-11-17 16:32:59,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 1150 transitions, 15334 flow, removed 158 selfloop flow, removed 22 redundant places. [2023-11-17 16:32:59,902 INFO L231 Difference]: Finished difference. Result has 221 places, 0 transitions, 0 flow [2023-11-17 16:32:59,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=3048, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=0, PETRI_PLACES=221, PETRI_TRANSITIONS=0} [2023-11-17 16:32:59,903 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 188 predicate places. [2023-11-17 16:32:59,903 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 0 transitions, 0 flow [2023-11-17 16:32:59,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 131.0) internal successors, (2227), 17 states have internal predecessors, (2227), 0 states have call successors, (0), 0 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 16:32:59,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 16:32:59,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 16:32:59,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 16:32:59,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 16:32:59,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-17 16:33:00,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:33:00,107 INFO L445 BasicCegarLoop]: Path program histogram: [15, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:33:00,109 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 16:33:00,110 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 16:33:00,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 04:33:00 BasicIcfg [2023-11-17 16:33:00,112 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 16:33:00,112 INFO L158 Benchmark]: Toolchain (without parser) took 46535.39ms. Allocated memory was 291.5MB in the beginning and 4.0GB in the end (delta: 3.7GB). Free memory was 236.4MB in the beginning and 2.7GB in the end (delta: -2.5GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-11-17 16:33:00,113 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 195.0MB. Free memory was 146.0MB in the beginning and 145.9MB in the end (delta: 158.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 16:33:00,113 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.90ms. Allocated memory is still 291.5MB. Free memory was 236.1MB in the beginning and 224.2MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 16:33:00,113 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.05ms. Allocated memory is still 291.5MB. Free memory was 224.2MB in the beginning and 222.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:33:00,113 INFO L158 Benchmark]: Boogie Preprocessor took 44.10ms. Allocated memory is still 291.5MB. Free memory was 222.5MB in the beginning and 220.7MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 16:33:00,113 INFO L158 Benchmark]: RCFGBuilder took 542.81ms. Allocated memory is still 291.5MB. Free memory was 220.4MB in the beginning and 201.1MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-11-17 16:33:00,114 INFO L158 Benchmark]: TraceAbstraction took 45612.06ms. Allocated memory was 291.5MB in the beginning and 4.0GB in the end (delta: 3.7GB). Free memory was 200.4MB in the beginning and 2.7GB in the end (delta: -2.5GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-11-17 16:33:00,115 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 195.0MB. Free memory was 146.0MB in the beginning and 145.9MB in the end (delta: 158.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 278.90ms. Allocated memory is still 291.5MB. Free memory was 236.1MB in the beginning and 224.2MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 52.05ms. Allocated memory is still 291.5MB. Free memory was 224.2MB in the beginning and 222.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.10ms. Allocated memory is still 291.5MB. Free memory was 222.5MB in the beginning and 220.7MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 542.81ms. Allocated memory is still 291.5MB. Free memory was 220.4MB in the beginning and 201.1MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 45612.06ms. Allocated memory was 291.5MB in the beginning and 4.0GB in the end (delta: 3.7GB). Free memory was 200.4MB in the beginning and 2.7GB in the end (delta: -2.5GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1s, 173 PlacesBefore, 33 PlacesAfterwards, 179 TransitionsBefore, 29 TransitionsAfterwards, 2176 CoEnabledTransitionPairs, 7 FixpointIterations, 100 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 25 TrivialYvCompositions, 7 ConcurrentYvCompositions, 10 ChoiceCompositions, 180 TotalNumberOfCompositions, 2749 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2462, independent: 2404, independent conditional: 0, independent unconditional: 2404, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1536, independent: 1513, independent conditional: 0, independent unconditional: 1513, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1536, independent: 1513, independent conditional: 0, independent unconditional: 1513, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 23, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 59, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2462, independent: 891, independent conditional: 0, independent unconditional: 891, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 1536, unknown conditional: 0, unknown unconditional: 1536] , Statistics on independence cache: Total cache size (in pairs): 115, Positive cache size: 106, Positive conditional cache size: 0, Positive unconditional cache size: 106, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 103]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 219 locations, 4 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: 45.4s, OverallIterations: 22, TraceHistogramMax: 5, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 25.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2390 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2390 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 4.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 211 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9590 IncrementalHoareTripleChecker+Invalid, 9801 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 211 mSolverCounterUnsat, 0 mSDtfsCounter, 9590 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1655 GetRequests, 1206 SyntacticMatches, 54 SemanticMatches, 395 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3149 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3442occurred in iteration=21, InterpolantAutomatonStates: 300, 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: 0.4s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 1404 NumberOfCodeBlocks, 1382 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 2001 ConstructedInterpolants, 0 QuantifiedInterpolants, 5712 SizeOfPredicates, 53 NumberOfNonLiveVariables, 5306 ConjunctsInSsa, 159 ConjunctsInUnsatCore, 58 InterpolantComputations, 6 PerfectInterpolantSequences, 1106/1438 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 16:33:00,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...