/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 23:03:10,164 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 23:03:10,223 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-29 23:03:10,245 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 23:03:10,245 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 23:03:10,246 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 23:03:10,246 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 23:03:10,246 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 23:03:10,246 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 23:03:10,248 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 23:03:10,248 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 23:03:10,249 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 23:03:10,249 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 23:03:10,249 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 23:03:10,249 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 23:03:10,250 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 23:03:10,250 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 23:03:10,250 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 23:03:10,250 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 23:03:10,250 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 23:03:10,250 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 23:03:10,251 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 23:03:10,251 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 23:03:10,251 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 23:03:10,251 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 23:03:10,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 23:03:10,253 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 23:03:10,253 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 23:03:10,253 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 23:03:10,253 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 23:03:10,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 23:03:10,254 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 23:03:10,254 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 23:03:10,254 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 23:03:10,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 23:03:10,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 23:03:10,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 23:03:10,440 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 23:03:10,440 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 23:03:10,440 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2023-11-29 23:03:11,359 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 23:03:11,512 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 23:03:11,512 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2023-11-29 23:03:11,518 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dd499442/58b1289a3929451dafb6ec79e4ad9a56/FLAG249a37321 [2023-11-29 23:03:11,527 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dd499442/58b1289a3929451dafb6ec79e4ad9a56 [2023-11-29 23:03:11,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 23:03:11,529 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 23:03:11,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 23:03:11,530 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 23:03:11,532 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 23:03:11,533 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:03:11" (1/1) ... [2023-11-29 23:03:11,533 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1004b50c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:03:11, skipping insertion in model container [2023-11-29 23:03:11,533 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:03:11" (1/1) ... [2023-11-29 23:03:11,550 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 23:03:11,642 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-queue-add-2.wvr.c[2722,2735] [2023-11-29 23:03:11,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 23:03:11,652 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 23:03:11,665 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-queue-add-2.wvr.c[2722,2735] [2023-11-29 23:03:11,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 23:03:11,672 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 23:03:11,672 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 23:03:11,676 INFO L206 MainTranslator]: Completed translation [2023-11-29 23:03:11,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:03:11 WrapperNode [2023-11-29 23:03:11,676 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 23:03:11,680 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 23:03:11,680 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 23:03:11,680 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 23:03:11,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:03:11" (1/1) ... [2023-11-29 23:03:11,689 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:03:11" (1/1) ... [2023-11-29 23:03:11,704 INFO L138 Inliner]: procedures = 24, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 161 [2023-11-29 23:03:11,704 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 23:03:11,704 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 23:03:11,704 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 23:03:11,704 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 23:03:11,710 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:03:11" (1/1) ... [2023-11-29 23:03:11,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:03:11" (1/1) ... [2023-11-29 23:03:11,712 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:03:11" (1/1) ... [2023-11-29 23:03:11,712 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:03:11" (1/1) ... [2023-11-29 23:03:11,717 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:03:11" (1/1) ... [2023-11-29 23:03:11,719 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:03:11" (1/1) ... [2023-11-29 23:03:11,720 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:03:11" (1/1) ... [2023-11-29 23:03:11,721 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:03:11" (1/1) ... [2023-11-29 23:03:11,722 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 23:03:11,723 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 23:03:11,723 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 23:03:11,723 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 23:03:11,723 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:03:11" (1/1) ... [2023-11-29 23:03:11,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 23:03:11,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:03:11,744 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) [2023-11-29 23:03:11,760 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 [2023-11-29 23:03:11,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 23:03:11,773 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 23:03:11,773 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 23:03:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 23:03:11,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 23:03:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 23:03:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 23:03:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 23:03:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 23:03:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 23:03:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 23:03:11,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 23:03:11,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 23:03:11,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 23:03:11,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 23:03:11,776 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 23:03:11,869 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 23:03:11,871 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 23:03:12,057 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 23:03:12,126 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 23:03:12,127 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 23:03:12,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:03:12 BoogieIcfgContainer [2023-11-29 23:03:12,128 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 23:03:12,129 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 23:03:12,129 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 23:03:12,131 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 23:03:12,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:03:11" (1/3) ... [2023-11-29 23:03:12,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ee75d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:03:12, skipping insertion in model container [2023-11-29 23:03:12,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:03:11" (2/3) ... [2023-11-29 23:03:12,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ee75d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:03:12, skipping insertion in model container [2023-11-29 23:03:12,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:03:12" (3/3) ... [2023-11-29 23:03:12,133 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2023-11-29 23:03:12,143 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 23:03:12,143 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 23:03:12,143 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 23:03:12,187 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 23:03:12,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 140 transitions, 294 flow [2023-11-29 23:03:12,259 INFO L124 PetriNetUnfolderBase]: 11/138 cut-off events. [2023-11-29 23:03:12,259 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 23:03:12,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 138 events. 11/138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 102. Up to 3 conditions per place. [2023-11-29 23:03:12,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 140 transitions, 294 flow [2023-11-29 23:03:12,270 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 129 transitions, 270 flow [2023-11-29 23:03:12,282 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 23:03:12,286 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7786d51d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 23:03:12,287 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-29 23:03:12,312 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 23:03:12,312 INFO L124 PetriNetUnfolderBase]: 11/128 cut-off events. [2023-11-29 23:03:12,312 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 23:03:12,312 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:03:12,313 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:03:12,313 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:03:12,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:03:12,316 INFO L85 PathProgramCache]: Analyzing trace with hash 889046637, now seen corresponding path program 1 times [2023-11-29 23:03:12,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:03:12,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545877356] [2023-11-29 23:03:12,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:03:12,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:03:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:03:12,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:03:12,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:03:12,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545877356] [2023-11-29 23:03:12,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545877356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:03:12,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:03:12,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 23:03:12,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15229368] [2023-11-29 23:03:12,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:03:12,526 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 23:03:12,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:03:12,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 23:03:12,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 23:03:12,549 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 140 [2023-11-29 23:03:12,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 129 transitions, 270 flow. Second operand has 2 states, 2 states have (on average 127.0) internal successors, (254), 2 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:12,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:03:12,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 140 [2023-11-29 23:03:12,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:03:12,614 INFO L124 PetriNetUnfolderBase]: 12/153 cut-off events. [2023-11-29 23:03:12,614 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-29 23:03:12,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 153 events. 12/153 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 189 event pairs, 5 based on Foata normal form. 14/157 useless extension candidates. Maximal degree in co-relation 100. Up to 22 conditions per place. [2023-11-29 23:03:12,617 INFO L140 encePairwiseOnDemand]: 132/140 looper letters, 7 selfloop transitions, 0 changer transitions 4/121 dead transitions. [2023-11-29 23:03:12,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 121 transitions, 268 flow [2023-11-29 23:03:12,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 23:03:12,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-29 23:03:12,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 263 transitions. [2023-11-29 23:03:12,630 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.9392857142857143 [2023-11-29 23:03:12,630 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 263 transitions. [2023-11-29 23:03:12,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 263 transitions. [2023-11-29 23:03:12,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:03:12,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 263 transitions. [2023-11-29 23:03:12,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 131.5) internal successors, (263), 2 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:12,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:12,643 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:12,645 INFO L307 CegarLoopForPetriNet]: 125 programPoint places, 1 predicate places. [2023-11-29 23:03:12,645 INFO L500 AbstractCegarLoop]: Abstraction has has 126 places, 121 transitions, 268 flow [2023-11-29 23:03:12,645 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 127.0) internal successors, (254), 2 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:12,645 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:03:12,645 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:03:12,646 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 23:03:12,646 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:03:12,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:03:12,647 INFO L85 PathProgramCache]: Analyzing trace with hash 820339201, now seen corresponding path program 1 times [2023-11-29 23:03:12,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:03:12,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338412875] [2023-11-29 23:03:12,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:03:12,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:03:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:03:12,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:03:12,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:03:12,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338412875] [2023-11-29 23:03:12,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338412875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:03:12,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:03:12,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 23:03:12,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717114474] [2023-11-29 23:03:12,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:03:12,885 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 23:03:12,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:03:12,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 23:03:12,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 23:03:12,886 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 140 [2023-11-29 23:03:12,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 121 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:12,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:03:12,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 140 [2023-11-29 23:03:12,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:03:12,921 INFO L124 PetriNetUnfolderBase]: 13/157 cut-off events. [2023-11-29 23:03:12,922 INFO L125 PetriNetUnfolderBase]: For 35/39 co-relation queries the response was YES. [2023-11-29 23:03:12,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 157 events. 13/157 cut-off events. For 35/39 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 204 event pairs, 1 based on Foata normal form. 1/147 useless extension candidates. Maximal degree in co-relation 116. Up to 25 conditions per place. [2023-11-29 23:03:12,924 INFO L140 encePairwiseOnDemand]: 136/140 looper letters, 11 selfloop transitions, 3 changer transitions 4/124 dead transitions. [2023-11-29 23:03:12,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 124 transitions, 311 flow [2023-11-29 23:03:12,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 23:03:12,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 23:03:12,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2023-11-29 23:03:12,926 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8928571428571429 [2023-11-29 23:03:12,926 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 375 transitions. [2023-11-29 23:03:12,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 375 transitions. [2023-11-29 23:03:12,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:03:12,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 375 transitions. [2023-11-29 23:03:12,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:12,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:12,931 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:12,931 INFO L307 CegarLoopForPetriNet]: 125 programPoint places, 3 predicate places. [2023-11-29 23:03:12,931 INFO L500 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 311 flow [2023-11-29 23:03:12,932 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:12,932 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:03:12,932 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:03:12,932 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 23:03:12,932 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:03:12,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:03:12,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1881246337, now seen corresponding path program 2 times [2023-11-29 23:03:12,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:03:12,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587186376] [2023-11-29 23:03:12,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:03:12,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:03:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:03:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:03:13,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:03:13,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587186376] [2023-11-29 23:03:13,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587186376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:03:13,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:03:13,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 23:03:13,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525503442] [2023-11-29 23:03:13,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:03:13,119 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 23:03:13,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:03:13,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 23:03:13,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 23:03:13,121 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 140 [2023-11-29 23:03:13,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:13,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:03:13,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 140 [2023-11-29 23:03:13,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:03:13,228 INFO L124 PetriNetUnfolderBase]: 13/200 cut-off events. [2023-11-29 23:03:13,229 INFO L125 PetriNetUnfolderBase]: For 87/95 co-relation queries the response was YES. [2023-11-29 23:03:13,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 200 events. 13/200 cut-off events. For 87/95 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 309 event pairs, 1 based on Foata normal form. 4/190 useless extension candidates. Maximal degree in co-relation 187. Up to 26 conditions per place. [2023-11-29 23:03:13,230 INFO L140 encePairwiseOnDemand]: 128/140 looper letters, 23 selfloop transitions, 8 changer transitions 10/134 dead transitions. [2023-11-29 23:03:13,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 134 transitions, 419 flow [2023-11-29 23:03:13,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 23:03:13,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 23:03:13,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 999 transitions. [2023-11-29 23:03:13,232 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7928571428571428 [2023-11-29 23:03:13,232 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 999 transitions. [2023-11-29 23:03:13,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 999 transitions. [2023-11-29 23:03:13,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:03:13,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 999 transitions. [2023-11-29 23:03:13,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 111.0) internal successors, (999), 9 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:13,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 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) [2023-11-29 23:03:13,237 INFO L81 ComplementDD]: Finished complementDD. Result has 10 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) [2023-11-29 23:03:13,238 INFO L307 CegarLoopForPetriNet]: 125 programPoint places, 11 predicate places. [2023-11-29 23:03:13,238 INFO L500 AbstractCegarLoop]: Abstraction has has 136 places, 134 transitions, 419 flow [2023-11-29 23:03:13,238 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:13,238 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:03:13,239 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:03:13,239 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 23:03:13,239 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:03:13,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:03:13,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1679862486, now seen corresponding path program 1 times [2023-11-29 23:03:13,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:03:13,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123093853] [2023-11-29 23:03:13,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:03:13,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:03:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:03:13,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:03:13,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:03:13,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123093853] [2023-11-29 23:03:13,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123093853] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:03:13,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:03:13,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 23:03:13,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776848374] [2023-11-29 23:03:13,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:03:13,644 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 23:03:13,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:03:13,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 23:03:13,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-29 23:03:13,648 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 140 [2023-11-29 23:03:13,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 134 transitions, 419 flow. Second operand has 12 states, 12 states have (on average 86.25) internal successors, (1035), 12 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:13,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:03:13,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 140 [2023-11-29 23:03:13,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:03:13,837 INFO L124 PetriNetUnfolderBase]: 100/434 cut-off events. [2023-11-29 23:03:13,838 INFO L125 PetriNetUnfolderBase]: For 586/616 co-relation queries the response was YES. [2023-11-29 23:03:13,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 434 events. 100/434 cut-off events. For 586/616 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1705 event pairs, 20 based on Foata normal form. 3/401 useless extension candidates. Maximal degree in co-relation 587. Up to 84 conditions per place. [2023-11-29 23:03:13,842 INFO L140 encePairwiseOnDemand]: 120/140 looper letters, 64 selfloop transitions, 14 changer transitions 20/175 dead transitions. [2023-11-29 23:03:13,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 175 transitions, 842 flow [2023-11-29 23:03:13,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 23:03:13,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 23:03:13,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1415 transitions. [2023-11-29 23:03:13,845 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6316964285714286 [2023-11-29 23:03:13,845 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1415 transitions. [2023-11-29 23:03:13,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1415 transitions. [2023-11-29 23:03:13,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:03:13,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1415 transitions. [2023-11-29 23:03:13,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 88.4375) internal successors, (1415), 16 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:13,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 140.0) internal successors, (2380), 17 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:13,852 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 140.0) internal successors, (2380), 17 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:13,853 INFO L307 CegarLoopForPetriNet]: 125 programPoint places, 26 predicate places. [2023-11-29 23:03:13,853 INFO L500 AbstractCegarLoop]: Abstraction has has 151 places, 175 transitions, 842 flow [2023-11-29 23:03:13,855 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 86.25) internal successors, (1035), 12 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:13,855 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:03:13,855 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:03:13,855 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 23:03:13,855 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:03:13,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:03:13,856 INFO L85 PathProgramCache]: Analyzing trace with hash 66170960, now seen corresponding path program 1 times [2023-11-29 23:03:13,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:03:13,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167197125] [2023-11-29 23:03:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:03:13,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:03:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:03:13,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:03:13,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:03:13,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167197125] [2023-11-29 23:03:13,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167197125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:03:13,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:03:13,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 23:03:13,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740159708] [2023-11-29 23:03:13,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:03:13,948 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 23:03:13,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:03:13,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 23:03:13,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 23:03:13,950 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 140 [2023-11-29 23:03:13,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 175 transitions, 842 flow. Second operand has 4 states, 4 states have (on average 122.75) internal successors, (491), 4 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:13,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:03:13,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 140 [2023-11-29 23:03:13,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:03:14,025 INFO L124 PetriNetUnfolderBase]: 182/683 cut-off events. [2023-11-29 23:03:14,025 INFO L125 PetriNetUnfolderBase]: For 1552/1601 co-relation queries the response was YES. [2023-11-29 23:03:14,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1773 conditions, 683 events. 182/683 cut-off events. For 1552/1601 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3400 event pairs, 26 based on Foata normal form. 19/636 useless extension candidates. Maximal degree in co-relation 1167. Up to 228 conditions per place. [2023-11-29 23:03:14,029 INFO L140 encePairwiseOnDemand]: 136/140 looper letters, 23 selfloop transitions, 13 changer transitions 34/191 dead transitions. [2023-11-29 23:03:14,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 191 transitions, 1125 flow [2023-11-29 23:03:14,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 23:03:14,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 23:03:14,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 503 transitions. [2023-11-29 23:03:14,031 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8982142857142857 [2023-11-29 23:03:14,031 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 503 transitions. [2023-11-29 23:03:14,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 503 transitions. [2023-11-29 23:03:14,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:03:14,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 503 transitions. [2023-11-29 23:03:14,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:14,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:14,033 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:14,034 INFO L307 CegarLoopForPetriNet]: 125 programPoint places, 29 predicate places. [2023-11-29 23:03:14,034 INFO L500 AbstractCegarLoop]: Abstraction has has 154 places, 191 transitions, 1125 flow [2023-11-29 23:03:14,035 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.75) internal successors, (491), 4 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:14,035 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:03:14,035 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:03:14,035 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 23:03:14,035 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:03:14,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:03:14,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1482892449, now seen corresponding path program 1 times [2023-11-29 23:03:14,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:03:14,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42007096] [2023-11-29 23:03:14,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:03:14,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:03:14,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:03:14,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:03:14,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:03:14,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42007096] [2023-11-29 23:03:14,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42007096] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:03:14,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346530762] [2023-11-29 23:03:14,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:03:14,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:03:14,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:03:14,184 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) [2023-11-29 23:03:14,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 23:03:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:03:14,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 23:03:14,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:03:14,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:03:14,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:03:14,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:03:14,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346530762] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:03:14,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:03:14,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-11-29 23:03:14,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386057096] [2023-11-29 23:03:14,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:03:14,635 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 23:03:14,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:03:14,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 23:03:14,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-29 23:03:14,638 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 140 [2023-11-29 23:03:14,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 191 transitions, 1125 flow. Second operand has 19 states, 19 states have (on average 106.78947368421052) internal successors, (2029), 19 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:14,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:03:14,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 140 [2023-11-29 23:03:14,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:03:14,905 INFO L124 PetriNetUnfolderBase]: 229/875 cut-off events. [2023-11-29 23:03:14,905 INFO L125 PetriNetUnfolderBase]: For 2839/2917 co-relation queries the response was YES. [2023-11-29 23:03:14,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2475 conditions, 875 events. 229/875 cut-off events. For 2839/2917 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4700 event pairs, 40 based on Foata normal form. 25/813 useless extension candidates. Maximal degree in co-relation 1261. Up to 261 conditions per place. [2023-11-29 23:03:14,910 INFO L140 encePairwiseOnDemand]: 125/140 looper letters, 48 selfloop transitions, 13 changer transitions 56/218 dead transitions. [2023-11-29 23:03:14,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 218 transitions, 1618 flow [2023-11-29 23:03:14,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 23:03:14,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 23:03:14,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1928 transitions. [2023-11-29 23:03:14,914 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2023-11-29 23:03:14,914 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1928 transitions. [2023-11-29 23:03:14,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1928 transitions. [2023-11-29 23:03:14,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:03:14,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1928 transitions. [2023-11-29 23:03:14,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 107.11111111111111) internal successors, (1928), 18 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:14,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 140.0) internal successors, (2660), 19 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:14,921 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 140.0) internal successors, (2660), 19 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:14,922 INFO L307 CegarLoopForPetriNet]: 125 programPoint places, 46 predicate places. [2023-11-29 23:03:14,922 INFO L500 AbstractCegarLoop]: Abstraction has has 171 places, 218 transitions, 1618 flow [2023-11-29 23:03:14,922 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 106.78947368421052) internal successors, (2029), 19 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:14,923 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:03:14,923 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:03:14,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 23:03:15,127 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 23:03:15,128 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:03:15,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:03:15,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1126843662, now seen corresponding path program 2 times [2023-11-29 23:03:15,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:03:15,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743834105] [2023-11-29 23:03:15,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:03:15,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:03:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:03:15,863 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:03:15,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:03:15,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743834105] [2023-11-29 23:03:15,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743834105] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:03:15,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233541878] [2023-11-29 23:03:15,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 23:03:15,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:03:15,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:03:15,865 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) [2023-11-29 23:03:15,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 23:03:15,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 23:03:15,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:03:15,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 23:03:15,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:03:16,729 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:03:16,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:03:16,849 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 23:03:16,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-11-29 23:03:17,485 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:03:17,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233541878] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:03:17,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:03:17,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 14] total 50 [2023-11-29 23:03:17,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133378168] [2023-11-29 23:03:17,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:03:17,486 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 23:03:17,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:03:17,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 23:03:17,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=2114, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 23:03:17,490 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 140 [2023-11-29 23:03:17,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 218 transitions, 1618 flow. Second operand has 50 states, 50 states have (on average 59.72) internal successors, (2986), 50 states have internal predecessors, (2986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:17,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:03:17,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 140 [2023-11-29 23:03:17,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:03:19,900 INFO L124 PetriNetUnfolderBase]: 2222/5274 cut-off events. [2023-11-29 23:03:19,901 INFO L125 PetriNetUnfolderBase]: For 18423/18582 co-relation queries the response was YES. [2023-11-29 23:03:19,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17351 conditions, 5274 events. 2222/5274 cut-off events. For 18423/18582 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 41870 event pairs, 353 based on Foata normal form. 7/4803 useless extension candidates. Maximal degree in co-relation 9221. Up to 2172 conditions per place. [2023-11-29 23:03:19,929 INFO L140 encePairwiseOnDemand]: 106/140 looper letters, 280 selfloop transitions, 101 changer transitions 88/526 dead transitions. [2023-11-29 23:03:19,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 526 transitions, 5577 flow [2023-11-29 23:03:19,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-29 23:03:19,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-11-29 23:03:19,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 3248 transitions. [2023-11-29 23:03:19,936 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4377358490566038 [2023-11-29 23:03:19,936 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 3248 transitions. [2023-11-29 23:03:19,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 3248 transitions. [2023-11-29 23:03:19,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:03:19,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 3248 transitions. [2023-11-29 23:03:19,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 61.283018867924525) internal successors, (3248), 53 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) [2023-11-29 23:03:19,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 140.0) internal successors, (7560), 54 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:19,954 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 140.0) internal successors, (7560), 54 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:19,954 INFO L307 CegarLoopForPetriNet]: 125 programPoint places, 98 predicate places. [2023-11-29 23:03:19,954 INFO L500 AbstractCegarLoop]: Abstraction has has 223 places, 526 transitions, 5577 flow [2023-11-29 23:03:19,955 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 59.72) internal successors, (2986), 50 states have internal predecessors, (2986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:19,955 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:03:19,956 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:03:19,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 23:03:20,160 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 23:03:20,161 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:03:20,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:03:20,161 INFO L85 PathProgramCache]: Analyzing trace with hash 904826894, now seen corresponding path program 3 times [2023-11-29 23:03:20,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:03:20,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003218691] [2023-11-29 23:03:20,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:03:20,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:03:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:03:21,076 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:03:21,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:03:21,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003218691] [2023-11-29 23:03:21,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003218691] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:03:21,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758064050] [2023-11-29 23:03:21,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 23:03:21,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:03:21,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:03:21,079 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) [2023-11-29 23:03:21,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 23:03:21,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 23:03:21,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:03:21,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 23:03:21,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:03:21,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 23:03:21,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 23:03:21,548 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 23:03:21,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:03:21,608 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_135 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_135) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)) 0))) is different from false [2023-11-29 23:03:21,651 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:03:21,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 37 [2023-11-29 23:03:21,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-11-29 23:03:21,985 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 23:03:21,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758064050] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:03:21,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:03:21,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 12, 12] total 43 [2023-11-29 23:03:21,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21047702] [2023-11-29 23:03:21,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:03:21,989 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-29 23:03:21,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:03:21,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-29 23:03:21,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1615, Unknown=1, NotChecked=80, Total=1806 [2023-11-29 23:03:21,992 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 140 [2023-11-29 23:03:21,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 526 transitions, 5577 flow. Second operand has 43 states, 43 states have (on average 51.41860465116279) internal successors, (2211), 43 states have internal predecessors, (2211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:21,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:03:21,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 140 [2023-11-29 23:03:21,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:03:25,233 INFO L124 PetriNetUnfolderBase]: 2743/6312 cut-off events. [2023-11-29 23:03:25,234 INFO L125 PetriNetUnfolderBase]: For 31035/31335 co-relation queries the response was YES. [2023-11-29 23:03:25,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25182 conditions, 6312 events. 2743/6312 cut-off events. For 31035/31335 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 50919 event pairs, 328 based on Foata normal form. 33/5824 useless extension candidates. Maximal degree in co-relation 14345. Up to 3020 conditions per place. [2023-11-29 23:03:25,276 INFO L140 encePairwiseOnDemand]: 111/140 looper letters, 390 selfloop transitions, 142 changer transitions 88/671 dead transitions. [2023-11-29 23:03:25,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 671 transitions, 8590 flow [2023-11-29 23:03:25,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-29 23:03:25,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-11-29 23:03:25,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 2606 transitions. [2023-11-29 23:03:25,282 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.3722857142857143 [2023-11-29 23:03:25,282 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 2606 transitions. [2023-11-29 23:03:25,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 2606 transitions. [2023-11-29 23:03:25,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:03:25,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 2606 transitions. [2023-11-29 23:03:25,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 52.12) internal successors, (2606), 50 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:25,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 140.0) internal successors, (7140), 51 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:25,296 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 140.0) internal successors, (7140), 51 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:25,298 INFO L307 CegarLoopForPetriNet]: 125 programPoint places, 147 predicate places. [2023-11-29 23:03:25,299 INFO L500 AbstractCegarLoop]: Abstraction has has 272 places, 671 transitions, 8590 flow [2023-11-29 23:03:25,300 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 51.41860465116279) internal successors, (2211), 43 states have internal predecessors, (2211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:25,300 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:03:25,300 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:03:25,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 23:03:25,505 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:03:25,506 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:03:25,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:03:25,506 INFO L85 PathProgramCache]: Analyzing trace with hash -2124255254, now seen corresponding path program 1 times [2023-11-29 23:03:25,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:03:25,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523613140] [2023-11-29 23:03:25,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:03:25,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:03:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:03:26,496 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:03:26,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:03:26,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523613140] [2023-11-29 23:03:26,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523613140] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:03:26,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198718256] [2023-11-29 23:03:26,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:03:26,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:03:26,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:03:26,498 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) [2023-11-29 23:03:26,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 23:03:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:03:26,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 23:03:26,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:03:27,254 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:03:27,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2023-11-29 23:03:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:03:27,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:03:27,836 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:03:27,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-11-29 23:03:28,729 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:03:28,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198718256] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:03:28,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:03:28,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24, 24] total 65 [2023-11-29 23:03:28,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220128699] [2023-11-29 23:03:28,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:03:28,730 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-11-29 23:03:28,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:03:28,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-11-29 23:03:28,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=3696, Unknown=0, NotChecked=0, Total=4160 [2023-11-29 23:03:28,734 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 140 [2023-11-29 23:03:28,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 671 transitions, 8590 flow. Second operand has 65 states, 65 states have (on average 49.184615384615384) internal successors, (3197), 65 states have internal predecessors, (3197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:28,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:03:28,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 140 [2023-11-29 23:03:28,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:03:46,296 INFO L124 PetriNetUnfolderBase]: 9361/19418 cut-off events. [2023-11-29 23:03:46,296 INFO L125 PetriNetUnfolderBase]: For 112094/112870 co-relation queries the response was YES. [2023-11-29 23:03:46,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92690 conditions, 19418 events. 9361/19418 cut-off events. For 112094/112870 co-relation queries the response was YES. Maximal size of possible extension queue 832. Compared 182947 event pairs, 234 based on Foata normal form. 77/18366 useless extension candidates. Maximal degree in co-relation 63979. Up to 10139 conditions per place. [2023-11-29 23:03:46,428 INFO L140 encePairwiseOnDemand]: 91/140 looper letters, 1760 selfloop transitions, 1517 changer transitions 312/3626 dead transitions. [2023-11-29 23:03:46,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 3626 transitions, 46737 flow [2023-11-29 23:03:46,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 272 states. [2023-11-29 23:03:46,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2023-11-29 23:03:46,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 13938 transitions. [2023-11-29 23:03:46,442 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.3660189075630252 [2023-11-29 23:03:46,442 INFO L72 ComplementDD]: Start complementDD. Operand 272 states and 13938 transitions. [2023-11-29 23:03:46,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 272 states and 13938 transitions. [2023-11-29 23:03:46,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:03:46,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 272 states and 13938 transitions. [2023-11-29 23:03:46,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 273 states, 272 states have (on average 51.24264705882353) internal successors, (13938), 272 states have internal predecessors, (13938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:46,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 273 states, 273 states have (on average 140.0) internal successors, (38220), 273 states have internal predecessors, (38220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:46,523 INFO L81 ComplementDD]: Finished complementDD. Result has 273 states, 273 states have (on average 140.0) internal successors, (38220), 273 states have internal predecessors, (38220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:46,524 INFO L307 CegarLoopForPetriNet]: 125 programPoint places, 418 predicate places. [2023-11-29 23:03:46,524 INFO L500 AbstractCegarLoop]: Abstraction has has 543 places, 3626 transitions, 46737 flow [2023-11-29 23:03:46,525 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 49.184615384615384) internal successors, (3197), 65 states have internal predecessors, (3197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:46,525 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:03:46,525 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:03:46,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 23:03:46,730 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:03:46,731 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:03:46,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:03:46,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1223275250, now seen corresponding path program 2 times [2023-11-29 23:03:46,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:03:46,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980581666] [2023-11-29 23:03:46,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:03:46,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:03:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:03:47,806 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:03:47,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:03:47,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980581666] [2023-11-29 23:03:47,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980581666] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:03:47,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689441495] [2023-11-29 23:03:47,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 23:03:47,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:03:47,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:03:47,808 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) [2023-11-29 23:03:47,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 23:03:47,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 23:03:47,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:03:47,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-29 23:03:47,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:03:48,728 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2023-11-29 23:03:48,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2023-11-29 23:03:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:03:48,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:03:49,127 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:03:49,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-11-29 23:03:50,067 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:03:50,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689441495] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:03:50,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:03:50,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24, 24] total 67 [2023-11-29 23:03:50,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746010781] [2023-11-29 23:03:50,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:03:50,068 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-11-29 23:03:50,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:03:50,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-11-29 23:03:50,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=4060, Unknown=0, NotChecked=0, Total=4422 [2023-11-29 23:03:50,071 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 140 [2023-11-29 23:03:50,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 3626 transitions, 46737 flow. Second operand has 67 states, 67 states have (on average 49.35820895522388) internal successors, (3307), 67 states have internal predecessors, (3307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:03:50,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:03:50,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 140 [2023-11-29 23:03:50,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:04:06,221 INFO L124 PetriNetUnfolderBase]: 11387/23568 cut-off events. [2023-11-29 23:04:06,221 INFO L125 PetriNetUnfolderBase]: For 153139/154325 co-relation queries the response was YES. [2023-11-29 23:04:06,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133007 conditions, 23568 events. 11387/23568 cut-off events. For 153139/154325 co-relation queries the response was YES. Maximal size of possible extension queue 1012. Compared 228308 event pairs, 173 based on Foata normal form. 252/22447 useless extension candidates. Maximal degree in co-relation 95523. Up to 12342 conditions per place. [2023-11-29 23:04:06,382 INFO L140 encePairwiseOnDemand]: 95/140 looper letters, 2750 selfloop transitions, 1883 changer transitions 467/5137 dead transitions. [2023-11-29 23:04:06,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 697 places, 5137 transitions, 74741 flow [2023-11-29 23:04:06,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2023-11-29 23:04:06,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2023-11-29 23:04:06,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 7937 transitions. [2023-11-29 23:04:06,390 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.36576036866359446 [2023-11-29 23:04:06,390 INFO L72 ComplementDD]: Start complementDD. Operand 155 states and 7937 transitions. [2023-11-29 23:04:06,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 155 states and 7937 transitions. [2023-11-29 23:04:06,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:04:06,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 155 states and 7937 transitions. [2023-11-29 23:04:06,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 156 states, 155 states have (on average 51.20645161290322) internal successors, (7937), 155 states have internal predecessors, (7937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:04:06,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 156 states, 156 states have (on average 140.0) internal successors, (21840), 156 states have internal predecessors, (21840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:04:06,417 INFO L81 ComplementDD]: Finished complementDD. Result has 156 states, 156 states have (on average 140.0) internal successors, (21840), 156 states have internal predecessors, (21840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:04:06,417 INFO L307 CegarLoopForPetriNet]: 125 programPoint places, 572 predicate places. [2023-11-29 23:04:06,417 INFO L500 AbstractCegarLoop]: Abstraction has has 697 places, 5137 transitions, 74741 flow [2023-11-29 23:04:06,418 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 49.35820895522388) internal successors, (3307), 67 states have internal predecessors, (3307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:04:06,418 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:04:06,418 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:04:06,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 23:04:06,623 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 23:04:06,623 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:04:06,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:04:06,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1899045984, now seen corresponding path program 3 times [2023-11-29 23:04:06,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:04:06,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516770243] [2023-11-29 23:04:06,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:04:06,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:04:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:04:07,497 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:04:07,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:04:07,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516770243] [2023-11-29 23:04:07,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516770243] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:04:07,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778864351] [2023-11-29 23:04:07,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 23:04:07,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:04:07,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:04:07,498 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) [2023-11-29 23:04:07,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 23:04:07,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 23:04:07,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:04:07,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 23:04:07,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:04:08,163 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 23:04:08,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:04:08,335 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:04:08,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-11-29 23:04:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 23:04:08,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778864351] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:04:08,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:04:08,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15, 15] total 49 [2023-11-29 23:04:08,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752537651] [2023-11-29 23:04:08,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:04:08,550 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-29 23:04:08,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:04:08,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-29 23:04:08,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=2160, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 23:04:08,554 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 140 [2023-11-29 23:04:08,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 5137 transitions, 74741 flow. Second operand has 49 states, 49 states have (on average 49.42857142857143) internal successors, (2422), 49 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:04:08,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:04:08,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 140 [2023-11-29 23:04:08,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:04:23,209 INFO L124 PetriNetUnfolderBase]: 12619/25894 cut-off events. [2023-11-29 23:04:23,209 INFO L125 PetriNetUnfolderBase]: For 181900/183287 co-relation queries the response was YES. [2023-11-29 23:04:23,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167998 conditions, 25894 events. 12619/25894 cut-off events. For 181900/183287 co-relation queries the response was YES. Maximal size of possible extension queue 1138. Compared 253790 event pairs, 143 based on Foata normal form. 195/24599 useless extension candidates. Maximal degree in co-relation 118451. Up to 13840 conditions per place. [2023-11-29 23:04:23,383 INFO L140 encePairwiseOnDemand]: 96/140 looper letters, 4131 selfloop transitions, 1443 changer transitions 600/6211 dead transitions. [2023-11-29 23:04:23,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 784 places, 6211 transitions, 100590 flow [2023-11-29 23:04:23,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-11-29 23:04:23,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2023-11-29 23:04:23,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 4537 transitions. [2023-11-29 23:04:23,387 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.368262987012987 [2023-11-29 23:04:23,387 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 4537 transitions. [2023-11-29 23:04:23,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 4537 transitions. [2023-11-29 23:04:23,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:04:23,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 4537 transitions. [2023-11-29 23:04:23,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 51.55681818181818) internal successors, (4537), 88 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:04:23,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 140.0) internal successors, (12460), 89 states have internal predecessors, (12460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:04:23,399 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 140.0) internal successors, (12460), 89 states have internal predecessors, (12460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:04:23,399 INFO L307 CegarLoopForPetriNet]: 125 programPoint places, 659 predicate places. [2023-11-29 23:04:23,399 INFO L500 AbstractCegarLoop]: Abstraction has has 784 places, 6211 transitions, 100590 flow [2023-11-29 23:04:23,400 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 49.42857142857143) internal successors, (2422), 49 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:04:23,400 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:04:23,400 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:04:23,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 23:04:23,605 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:04:23,605 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:04:23,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:04:23,606 INFO L85 PathProgramCache]: Analyzing trace with hash 16736438, now seen corresponding path program 4 times [2023-11-29 23:04:23,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:04:23,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276966930] [2023-11-29 23:04:23,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:04:23,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:04:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:04:24,450 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:04:24,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:04:24,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276966930] [2023-11-29 23:04:24,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276966930] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:04:24,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056313990] [2023-11-29 23:04:24,451 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 23:04:24,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:04:24,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:04:24,452 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) [2023-11-29 23:04:24,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 23:04:24,542 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 23:04:24,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:04:24,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 23:04:24,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:04:25,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2023-11-29 23:04:25,356 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:04:25,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:04:25,602 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:04:25,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-11-29 23:04:26,438 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:04:26,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056313990] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:04:26,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:04:26,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24, 24] total 68 [2023-11-29 23:04:26,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171889586] [2023-11-29 23:04:26,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:04:26,439 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-11-29 23:04:26,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:04:26,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-11-29 23:04:26,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=3979, Unknown=0, NotChecked=0, Total=4556 [2023-11-29 23:04:26,443 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 140 [2023-11-29 23:04:26,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 784 places, 6211 transitions, 100590 flow. Second operand has 68 states, 68 states have (on average 49.30882352941177) internal successors, (3353), 68 states have internal predecessors, (3353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:04:26,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:04:26,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 140 [2023-11-29 23:04:26,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:04:59,480 INFO L124 PetriNetUnfolderBase]: 15840/32717 cut-off events. [2023-11-29 23:04:59,481 INFO L125 PetriNetUnfolderBase]: For 262495/264725 co-relation queries the response was YES. [2023-11-29 23:04:59,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240177 conditions, 32717 events. 15840/32717 cut-off events. For 262495/264725 co-relation queries the response was YES. Maximal size of possible extension queue 1495. Compared 336073 event pairs, 168 based on Foata normal form. 384/31316 useless extension candidates. Maximal degree in co-relation 175061. Up to 17964 conditions per place. [2023-11-29 23:04:59,751 INFO L140 encePairwiseOnDemand]: 92/140 looper letters, 4358 selfloop transitions, 3504 changer transitions 797/8696 dead transitions. [2023-11-29 23:04:59,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1055 places, 8696 transitions, 156615 flow [2023-11-29 23:04:59,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 272 states. [2023-11-29 23:04:59,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2023-11-29 23:04:59,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 13969 transitions. [2023-11-29 23:04:59,761 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.3668329831932773 [2023-11-29 23:04:59,761 INFO L72 ComplementDD]: Start complementDD. Operand 272 states and 13969 transitions. [2023-11-29 23:04:59,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 272 states and 13969 transitions. [2023-11-29 23:04:59,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:04:59,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 272 states and 13969 transitions. [2023-11-29 23:04:59,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 273 states, 272 states have (on average 51.356617647058826) internal successors, (13969), 272 states have internal predecessors, (13969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:04:59,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 273 states, 273 states have (on average 140.0) internal successors, (38220), 273 states have internal predecessors, (38220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:04:59,808 INFO L81 ComplementDD]: Finished complementDD. Result has 273 states, 273 states have (on average 140.0) internal successors, (38220), 273 states have internal predecessors, (38220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:04:59,808 INFO L307 CegarLoopForPetriNet]: 125 programPoint places, 930 predicate places. [2023-11-29 23:04:59,808 INFO L500 AbstractCegarLoop]: Abstraction has has 1055 places, 8696 transitions, 156615 flow [2023-11-29 23:04:59,809 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 49.30882352941177) internal successors, (3353), 68 states have internal predecessors, (3353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:04:59,809 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:04:59,809 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:04:59,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 23:05:00,013 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:05:00,014 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:05:00,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:05:00,015 INFO L85 PathProgramCache]: Analyzing trace with hash -309377678, now seen corresponding path program 5 times [2023-11-29 23:05:00,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:05:00,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376124279] [2023-11-29 23:05:00,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:05:00,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:05:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:05:01,134 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:05:01,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:05:01,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376124279] [2023-11-29 23:05:01,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376124279] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:05:01,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303879769] [2023-11-29 23:05:01,134 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 23:05:01,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:05:01,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:05:01,136 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) [2023-11-29 23:05:01,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 23:05:01,222 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 23:05:01,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:05:01,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 23:05:01,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:05:01,669 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 23:05:01,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:05:01,880 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:05:01,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 21 [2023-11-29 23:05:02,073 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 23:05:02,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303879769] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:05:02,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:05:02,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 16, 16] total 51 [2023-11-29 23:05:02,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008507511] [2023-11-29 23:05:02,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:05:02,075 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-29 23:05:02,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:05:02,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-29 23:05:02,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2352, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 23:05:02,077 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 140 [2023-11-29 23:05:02,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1055 places, 8696 transitions, 156615 flow. Second operand has 51 states, 51 states have (on average 49.3921568627451) internal successors, (2519), 51 states have internal predecessors, (2519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:05:02,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:05:02,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 140 [2023-11-29 23:05:02,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:05:35,233 INFO L124 PetriNetUnfolderBase]: 16959/35508 cut-off events. [2023-11-29 23:05:35,233 INFO L125 PetriNetUnfolderBase]: For 305331/307670 co-relation queries the response was YES. [2023-11-29 23:05:35,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288162 conditions, 35508 events. 16959/35508 cut-off events. For 305331/307670 co-relation queries the response was YES. Maximal size of possible extension queue 1609. Compared 373289 event pairs, 118 based on Foata normal form. 293/33900 useless extension candidates. Maximal degree in co-relation 206408. Up to 19388 conditions per place. [2023-11-29 23:05:35,549 INFO L140 encePairwiseOnDemand]: 98/140 looper letters, 6373 selfloop transitions, 2200 changer transitions 1038/9648 dead transitions. [2023-11-29 23:05:35,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1138 places, 9648 transitions, 191858 flow [2023-11-29 23:05:35,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-11-29 23:05:35,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2023-11-29 23:05:35,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 4298 transitions. [2023-11-29 23:05:35,553 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.36547619047619045 [2023-11-29 23:05:35,553 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 4298 transitions. [2023-11-29 23:05:35,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 4298 transitions. [2023-11-29 23:05:35,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:05:35,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 4298 transitions. [2023-11-29 23:05:35,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 51.166666666666664) internal successors, (4298), 84 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:05:35,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 140.0) internal successors, (11900), 85 states have internal predecessors, (11900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:05:35,567 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 140.0) internal successors, (11900), 85 states have internal predecessors, (11900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:05:35,567 INFO L307 CegarLoopForPetriNet]: 125 programPoint places, 1013 predicate places. [2023-11-29 23:05:35,568 INFO L500 AbstractCegarLoop]: Abstraction has has 1138 places, 9648 transitions, 191858 flow [2023-11-29 23:05:35,568 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 49.3921568627451) internal successors, (2519), 51 states have internal predecessors, (2519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:05:35,568 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:05:35,568 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:05:35,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 23:05:35,773 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 23:05:35,773 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:05:35,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:05:35,774 INFO L85 PathProgramCache]: Analyzing trace with hash 427229528, now seen corresponding path program 6 times [2023-11-29 23:05:35,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:05:35,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351757926] [2023-11-29 23:05:35,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:05:35,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:05:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:05:36,628 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:05:36,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:05:36,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351757926] [2023-11-29 23:05:36,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351757926] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:05:36,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226019662] [2023-11-29 23:05:36,628 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 23:05:36,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:05:36,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:05:36,632 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) [2023-11-29 23:05:36,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 23:05:36,730 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 23:05:36,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:05:36,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-29 23:05:36,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:05:37,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2023-11-29 23:05:37,778 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:05:37,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:05:38,027 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:05:38,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-11-29 23:05:38,941 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:05:38,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226019662] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:05:38,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:05:38,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24, 24] total 68 [2023-11-29 23:05:38,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491727620] [2023-11-29 23:05:38,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:05:38,942 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-11-29 23:05:38,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:05:38,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-11-29 23:05:38,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=3981, Unknown=0, NotChecked=0, Total=4556 [2023-11-29 23:05:38,945 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 140 [2023-11-29 23:05:38,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1138 places, 9648 transitions, 191858 flow. Second operand has 68 states, 68 states have (on average 49.30882352941177) internal successors, (3353), 68 states have internal predecessors, (3353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:05:38,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:05:38,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 140 [2023-11-29 23:05:38,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:06:32,262 INFO L124 PetriNetUnfolderBase]: 18138/37850 cut-off events. [2023-11-29 23:06:32,262 INFO L125 PetriNetUnfolderBase]: For 365477/368333 co-relation queries the response was YES. [2023-11-29 23:06:32,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340645 conditions, 37850 events. 18138/37850 cut-off events. For 365477/368333 co-relation queries the response was YES. Maximal size of possible extension queue 1720. Compared 400644 event pairs, 152 based on Foata normal form. 427/36277 useless extension candidates. Maximal degree in co-relation 247691. Up to 20934 conditions per place. [2023-11-29 23:06:32,627 INFO L140 encePairwiseOnDemand]: 92/140 looper letters, 5718 selfloop transitions, 3666 changer transitions 1161/10582 dead transitions. [2023-11-29 23:06:32,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1316 places, 10582 transitions, 230613 flow [2023-11-29 23:06:32,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2023-11-29 23:06:32,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2023-11-29 23:06:32,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 9079 transitions. [2023-11-29 23:06:32,633 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.3622905027932961 [2023-11-29 23:06:32,633 INFO L72 ComplementDD]: Start complementDD. Operand 179 states and 9079 transitions. [2023-11-29 23:06:32,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 179 states and 9079 transitions. [2023-11-29 23:06:32,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:06:32,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 179 states and 9079 transitions. [2023-11-29 23:06:32,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 180 states, 179 states have (on average 50.720670391061454) internal successors, (9079), 179 states have internal predecessors, (9079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:06:32,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 180 states, 180 states have (on average 140.0) internal successors, (25200), 180 states have internal predecessors, (25200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:06:32,659 INFO L81 ComplementDD]: Finished complementDD. Result has 180 states, 180 states have (on average 140.0) internal successors, (25200), 180 states have internal predecessors, (25200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:06:32,659 INFO L307 CegarLoopForPetriNet]: 125 programPoint places, 1191 predicate places. [2023-11-29 23:06:32,660 INFO L500 AbstractCegarLoop]: Abstraction has has 1316 places, 10582 transitions, 230613 flow [2023-11-29 23:06:32,660 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 49.30882352941177) internal successors, (3353), 68 states have internal predecessors, (3353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:06:32,660 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:06:32,660 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:06:32,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 23:06:32,864 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 23:06:32,865 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:06:32,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:06:32,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1587244054, now seen corresponding path program 7 times [2023-11-29 23:06:32,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:06:32,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090820532] [2023-11-29 23:06:32,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:06:32,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:06:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:06:33,822 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:06:33,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:06:33,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090820532] [2023-11-29 23:06:33,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090820532] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:06:33,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771163170] [2023-11-29 23:06:33,822 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 23:06:33,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:06:33,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:06:33,824 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) [2023-11-29 23:06:33,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 23:06:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:06:33,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 23:06:33,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:06:34,481 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:06:34,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2023-11-29 23:06:34,736 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:06:34,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:06:35,019 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:06:35,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-11-29 23:06:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:06:35,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771163170] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:06:35,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:06:35,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24, 24] total 65 [2023-11-29 23:06:35,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054716962] [2023-11-29 23:06:35,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:06:35,853 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-11-29 23:06:35,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:06:35,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-11-29 23:06:35,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=3692, Unknown=0, NotChecked=0, Total=4160 [2023-11-29 23:06:35,857 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 140 [2023-11-29 23:06:35,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1316 places, 10582 transitions, 230613 flow. Second operand has 65 states, 65 states have (on average 49.2) internal successors, (3198), 65 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:06:35,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:06:35,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 140 [2023-11-29 23:06:35,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:07:49,490 INFO L124 PetriNetUnfolderBase]: 23788/49478 cut-off events. [2023-11-29 23:07:49,490 INFO L125 PetriNetUnfolderBase]: For 548862/552151 co-relation queries the response was YES. [2023-11-29 23:07:49,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488748 conditions, 49478 events. 23788/49478 cut-off events. For 548862/552151 co-relation queries the response was YES. Maximal size of possible extension queue 2422. Compared 546285 event pairs, 131 based on Foata normal form. 561/47602 useless extension candidates. Maximal degree in co-relation 370244. Up to 28372 conditions per place. [2023-11-29 23:07:50,023 INFO L140 encePairwiseOnDemand]: 91/140 looper letters, 7414 selfloop transitions, 5773 changer transitions 1524/14748 dead transitions. [2023-11-29 23:07:50,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1598 places, 14748 transitions, 349216 flow [2023-11-29 23:07:50,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 283 states. [2023-11-29 23:07:50,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2023-11-29 23:07:50,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 14313 transitions. [2023-11-29 23:07:50,032 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.36125694093891975 [2023-11-29 23:07:50,032 INFO L72 ComplementDD]: Start complementDD. Operand 283 states and 14313 transitions. [2023-11-29 23:07:50,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 283 states and 14313 transitions. [2023-11-29 23:07:50,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:07:50,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 283 states and 14313 transitions. [2023-11-29 23:07:50,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 284 states, 283 states have (on average 50.57597173144876) internal successors, (14313), 283 states have internal predecessors, (14313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:07:50,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 284 states, 284 states have (on average 140.0) internal successors, (39760), 284 states have internal predecessors, (39760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:07:50,080 INFO L81 ComplementDD]: Finished complementDD. Result has 284 states, 284 states have (on average 140.0) internal successors, (39760), 284 states have internal predecessors, (39760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:07:50,081 INFO L307 CegarLoopForPetriNet]: 125 programPoint places, 1473 predicate places. [2023-11-29 23:07:50,081 INFO L500 AbstractCegarLoop]: Abstraction has has 1598 places, 14748 transitions, 349216 flow [2023-11-29 23:07:50,081 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 49.2) internal successors, (3198), 65 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:07:50,081 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:07:50,081 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:07:50,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 23:07:50,289 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 23:07:50,289 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:07:50,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:07:50,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1282273252, now seen corresponding path program 8 times [2023-11-29 23:07:50,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:07:50,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501692201] [2023-11-29 23:07:50,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:07:50,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:07:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:07:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:07:51,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:07:51,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501692201] [2023-11-29 23:07:51,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501692201] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:07:51,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450563039] [2023-11-29 23:07:51,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 23:07:51,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:07:51,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:07:51,036 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) [2023-11-29 23:07:51,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 23:07:51,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 23:07:51,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:07:51,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-29 23:07:51,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:07:51,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2023-11-29 23:07:52,105 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:07:52,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:07:52,363 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:07:52,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-11-29 23:07:53,354 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:07:53,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450563039] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:07:53,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:07:53,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 29, 24] total 73 [2023-11-29 23:07:53,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175245540] [2023-11-29 23:07:53,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:07:53,355 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-11-29 23:07:53,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:07:53,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-11-29 23:07:53,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=674, Invalid=4582, Unknown=0, NotChecked=0, Total=5256 [2023-11-29 23:07:53,358 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 140 [2023-11-29 23:07:53,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1598 places, 14748 transitions, 349216 flow. Second operand has 73 states, 73 states have (on average 49.06849315068493) internal successors, (3582), 73 states have internal predecessors, (3582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:07:53,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:07:53,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 140 [2023-11-29 23:07:53,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:10:09,054 INFO L124 PetriNetUnfolderBase]: 25497/53118 cut-off events. [2023-11-29 23:10:09,054 INFO L125 PetriNetUnfolderBase]: For 650332/654007 co-relation queries the response was YES. [2023-11-29 23:10:09,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569148 conditions, 53118 events. 25497/53118 cut-off events. For 650332/654007 co-relation queries the response was YES. Maximal size of possible extension queue 2614. Compared 593449 event pairs, 123 based on Foata normal form. 589/51097 useless extension candidates. Maximal degree in co-relation 434671. Up to 30621 conditions per place. [2023-11-29 23:10:09,668 INFO L140 encePairwiseOnDemand]: 94/140 looper letters, 8667 selfloop transitions, 5590 changer transitions 1727/16021 dead transitions. [2023-11-29 23:10:09,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1804 places, 16021 transitions, 409987 flow [2023-11-29 23:10:09,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2023-11-29 23:10:09,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2023-11-29 23:10:09,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 10438 transitions. [2023-11-29 23:10:09,674 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.36017943409247755 [2023-11-29 23:10:09,674 INFO L72 ComplementDD]: Start complementDD. Operand 207 states and 10438 transitions. [2023-11-29 23:10:09,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 207 states and 10438 transitions. [2023-11-29 23:10:09,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:10:09,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 207 states and 10438 transitions. [2023-11-29 23:10:09,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 208 states, 207 states have (on average 50.42512077294686) internal successors, (10438), 207 states have internal predecessors, (10438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:09,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 208 states, 208 states have (on average 140.0) internal successors, (29120), 208 states have internal predecessors, (29120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:09,856 INFO L81 ComplementDD]: Finished complementDD. Result has 208 states, 208 states have (on average 140.0) internal successors, (29120), 208 states have internal predecessors, (29120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:09,880 INFO L307 CegarLoopForPetriNet]: 125 programPoint places, 1679 predicate places. [2023-11-29 23:10:09,880 INFO L500 AbstractCegarLoop]: Abstraction has has 1804 places, 16021 transitions, 409987 flow [2023-11-29 23:10:09,881 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 49.06849315068493) internal successors, (3582), 73 states have internal predecessors, (3582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:09,881 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:10:09,881 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:10:09,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 23:10:10,085 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 23:10:10,086 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:10:10,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:10:10,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1841653716, now seen corresponding path program 9 times [2023-11-29 23:10:10,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:10:10,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779632657] [2023-11-29 23:10:10,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:10:10,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:10:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:10:10,835 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:10:10,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:10:10,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779632657] [2023-11-29 23:10:10,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779632657] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:10:10,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565999068] [2023-11-29 23:10:10,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 23:10:10,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:10:10,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:10:10,837 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) [2023-11-29 23:10:10,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 23:10:11,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 23:10:11,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:10:11,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 23:10:11,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:10:11,664 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:10:11,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2023-11-29 23:10:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:10:11,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:10:12,241 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:10:12,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-11-29 23:10:13,390 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:10:13,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565999068] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:10:13,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:10:13,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 29, 24] total 64 [2023-11-29 23:10:13,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258802978] [2023-11-29 23:10:13,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:10:13,391 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-11-29 23:10:13,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:10:13,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-11-29 23:10:13,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=3545, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 23:10:13,394 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 140 [2023-11-29 23:10:13,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1804 places, 16021 transitions, 409987 flow. Second operand has 64 states, 64 states have (on average 49.078125) internal successors, (3141), 64 states have internal predecessors, (3141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:10:13,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:10:13,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 140 [2023-11-29 23:10:13,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:12:54,570 INFO L124 PetriNetUnfolderBase]: 27646/57455 cut-off events. [2023-11-29 23:12:54,570 INFO L125 PetriNetUnfolderBase]: For 772863/776823 co-relation queries the response was YES. [2023-11-29 23:12:54,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664990 conditions, 57455 events. 27646/57455 cut-off events. For 772863/776823 co-relation queries the response was YES. Maximal size of possible extension queue 2851. Compared 649043 event pairs, 138 based on Foata normal form. 637/55263 useless extension candidates. Maximal degree in co-relation 514120. Up to 33437 conditions per place. [2023-11-29 23:12:55,213 INFO L140 encePairwiseOnDemand]: 93/140 looper letters, 9244 selfloop transitions, 6209 changer transitions 1916/17406 dead transitions. [2023-11-29 23:12:55,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2000 places, 17406 transitions, 479585 flow [2023-11-29 23:12:55,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2023-11-29 23:12:55,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2023-11-29 23:12:55,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 9953 transitions. [2023-11-29 23:12:55,219 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.3608774474256708 [2023-11-29 23:12:55,219 INFO L72 ComplementDD]: Start complementDD. Operand 197 states and 9953 transitions. [2023-11-29 23:12:55,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 197 states and 9953 transitions. [2023-11-29 23:12:55,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:12:55,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 197 states and 9953 transitions. [2023-11-29 23:12:55,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 198 states, 197 states have (on average 50.52284263959391) internal successors, (9953), 197 states have internal predecessors, (9953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:55,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 198 states, 198 states have (on average 140.0) internal successors, (27720), 198 states have internal predecessors, (27720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:55,239 INFO L81 ComplementDD]: Finished complementDD. Result has 198 states, 198 states have (on average 140.0) internal successors, (27720), 198 states have internal predecessors, (27720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:55,240 INFO L307 CegarLoopForPetriNet]: 125 programPoint places, 1875 predicate places. [2023-11-29 23:12:55,240 INFO L500 AbstractCegarLoop]: Abstraction has has 2000 places, 17406 transitions, 479585 flow [2023-11-29 23:12:55,240 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 49.078125) internal successors, (3141), 64 states have internal predecessors, (3141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:55,240 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:12:55,240 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:12:55,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 23:12:55,441 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 23:12:55,441 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:12:55,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:12:55,441 INFO L85 PathProgramCache]: Analyzing trace with hash -515267010, now seen corresponding path program 10 times [2023-11-29 23:12:55,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:12:55,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495982683] [2023-11-29 23:12:55,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:12:55,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:12:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:12:56,968 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:12:56,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:12:56,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495982683] [2023-11-29 23:12:56,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495982683] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:12:56,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680234842] [2023-11-29 23:12:56,969 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 23:12:56,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:12:56,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:12:56,970 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) [2023-11-29 23:12:56,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 23:12:57,065 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 23:12:57,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:12:57,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 23:12:57,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:12:58,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 23:12:58,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 23:12:58,611 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:12:58,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2023-11-29 23:12:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:12:58,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:12:59,410 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:12:59,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 59 [2023-11-29 23:12:59,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2023-11-29 23:13:00,816 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:13:00,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680234842] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:13:00,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:13:00,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 32, 32] total 89 [2023-11-29 23:13:00,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574484830] [2023-11-29 23:13:00,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:13:00,817 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2023-11-29 23:13:00,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:13:00,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2023-11-29 23:13:00,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=506, Invalid=7324, Unknown=2, NotChecked=0, Total=7832 [2023-11-29 23:13:00,821 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 140 [2023-11-29 23:13:00,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2000 places, 17406 transitions, 479585 flow. Second operand has 89 states, 89 states have (on average 39.68539325842696) internal successors, (3532), 89 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:13:00,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:13:00,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 140 [2023-11-29 23:13:00,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:16:24,139 INFO L124 PetriNetUnfolderBase]: 30093/62582 cut-off events. [2023-11-29 23:16:24,139 INFO L125 PetriNetUnfolderBase]: For 924460/928962 co-relation queries the response was YES. [2023-11-29 23:16:24,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778327 conditions, 62582 events. 30093/62582 cut-off events. For 924460/928962 co-relation queries the response was YES. Maximal size of possible extension queue 3203. Compared 718150 event pairs, 109 based on Foata normal form. 683/60123 useless extension candidates. Maximal degree in co-relation 607305. Up to 36247 conditions per place. [2023-11-29 23:16:25,094 INFO L140 encePairwiseOnDemand]: 84/140 looper letters, 10209 selfloop transitions, 6749 changer transitions 2234/19223 dead transitions. [2023-11-29 23:16:25,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2150 places, 19223 transitions, 568380 flow [2023-11-29 23:16:25,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2023-11-29 23:16:25,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2023-11-29 23:16:25,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 6323 transitions. [2023-11-29 23:16:25,099 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.2991012298959319 [2023-11-29 23:16:25,099 INFO L72 ComplementDD]: Start complementDD. Operand 151 states and 6323 transitions. [2023-11-29 23:16:25,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 151 states and 6323 transitions. [2023-11-29 23:16:25,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:16:25,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 151 states and 6323 transitions. [2023-11-29 23:16:25,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 152 states, 151 states have (on average 41.87417218543046) internal successors, (6323), 151 states have internal predecessors, (6323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:16:25,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 152 states, 152 states have (on average 140.0) internal successors, (21280), 152 states have internal predecessors, (21280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:16:25,113 INFO L81 ComplementDD]: Finished complementDD. Result has 152 states, 152 states have (on average 140.0) internal successors, (21280), 152 states have internal predecessors, (21280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:16:25,114 INFO L307 CegarLoopForPetriNet]: 125 programPoint places, 2025 predicate places. [2023-11-29 23:16:25,114 INFO L500 AbstractCegarLoop]: Abstraction has has 2150 places, 19223 transitions, 568380 flow [2023-11-29 23:16:25,115 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 39.68539325842696) internal successors, (3532), 89 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:16:25,115 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:16:25,115 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:16:25,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 23:16:25,320 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 23:16:25,320 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:16:25,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:16:25,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2096030854, now seen corresponding path program 11 times [2023-11-29 23:16:25,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:16:25,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974919540] [2023-11-29 23:16:25,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:16:25,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:16:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:16:26,327 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:16:26,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:16:26,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974919540] [2023-11-29 23:16:26,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974919540] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:16:26,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596595905] [2023-11-29 23:16:26,328 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 23:16:26,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:16:26,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:16:26,329 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) [2023-11-29 23:16:26,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 23:16:26,418 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 23:16:26,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:16:26,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-29 23:16:26,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:16:26,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 23:16:26,527 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 23:16:26,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 23:16:26,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 23:16:27,183 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 23:16:27,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:16:27,398 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:16:27,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 38 [2023-11-29 23:16:27,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 23:16:27,811 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 23:16:27,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596595905] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:16:27,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:16:27,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 22, 22] total 61 [2023-11-29 23:16:27,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807746149] [2023-11-29 23:16:27,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:16:27,812 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-11-29 23:16:27,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:16:27,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-11-29 23:16:27,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=3430, Unknown=2, NotChecked=0, Total=3660 [2023-11-29 23:16:27,814 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 140 [2023-11-29 23:16:27,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2150 places, 19223 transitions, 568380 flow. Second operand has 61 states, 61 states have (on average 41.295081967213115) internal successors, (2519), 61 states have internal predecessors, (2519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:16:27,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:16:27,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 140 [2023-11-29 23:16:27,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-11-29 23:16:54,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-11-29 23:16:54,670 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-29 23:16:54,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-29 23:16:54,685 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 23:16:54,685 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 23:16:54,870 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:16:54,870 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (61states, 38/140 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 93235 conditions, 7024 events (3027/7023 cut-off events. For 89276/91162 co-relation queries the response was YES. Maximal size of possible extension queue 1303. Compared 72243 event pairs, 85 based on Foata normal form. 84/7880 useless extension candidates. Maximal degree in co-relation 63558. Up to 2246 conditions per place.). [2023-11-29 23:16:54,872 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-29 23:16:54,872 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-29 23:16:54,872 INFO L457 BasicCegarLoop]: Path program histogram: [11, 3, 2, 1, 1, 1] [2023-11-29 23:16:54,874 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 23:16:54,875 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 23:16:54,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:16:54 BasicIcfg [2023-11-29 23:16:54,877 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 23:16:54,877 INFO L158 Benchmark]: Toolchain (without parser) took 823348.29ms. Allocated memory was 541.1MB in the beginning and 4.7GB in the end (delta: 4.1GB). Free memory was 497.7MB in the beginning and 2.2GB in the end (delta: -1.7GB). Peak memory consumption was 3.7GB. Max. memory is 16.0GB. [2023-11-29 23:16:54,877 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 354.4MB. Free memory is still 303.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 23:16:54,877 INFO L158 Benchmark]: CACSL2BoogieTranslator took 147.05ms. Allocated memory is still 541.1MB. Free memory was 497.7MB in the beginning and 485.8MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-11-29 23:16:54,877 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.06ms. Allocated memory is still 541.1MB. Free memory was 485.8MB in the beginning and 483.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 23:16:54,878 INFO L158 Benchmark]: Boogie Preprocessor took 17.98ms. Allocated memory is still 541.1MB. Free memory was 483.7MB in the beginning and 482.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 23:16:54,878 INFO L158 Benchmark]: RCFGBuilder took 405.09ms. Allocated memory is still 541.1MB. Free memory was 482.3MB in the beginning and 456.4MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-11-29 23:16:54,878 INFO L158 Benchmark]: TraceAbstraction took 822747.68ms. Allocated memory was 541.1MB in the beginning and 4.7GB in the end (delta: 4.1GB). Free memory was 455.7MB in the beginning and 2.2GB in the end (delta: -1.8GB). Peak memory consumption was 3.6GB. Max. memory is 16.0GB. [2023-11-29 23:16:54,879 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 354.4MB. Free memory is still 303.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 147.05ms. Allocated memory is still 541.1MB. Free memory was 497.7MB in the beginning and 485.8MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 24.06ms. Allocated memory is still 541.1MB. Free memory was 485.8MB in the beginning and 483.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 17.98ms. Allocated memory is still 541.1MB. Free memory was 483.7MB in the beginning and 482.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 405.09ms. Allocated memory is still 541.1MB. Free memory was 482.3MB in the beginning and 456.4MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 822747.68ms. Allocated memory was 541.1MB in the beginning and 4.7GB in the end (delta: 4.1GB). Free memory was 455.7MB in the beginning and 2.2GB in the end (delta: -1.8GB). Peak memory consumption was 3.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (61states, 38/140 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 93235 conditions, 7024 events (3027/7023 cut-off events. For 89276/91162 co-relation queries the response was YES. Maximal size of possible extension queue 1303. Compared 72243 event pairs, 85 based on Foata normal form. 84/7880 useless extension candidates. Maximal degree in co-relation 63558. Up to 2246 conditions per place.). - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (61states, 38/140 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 93235 conditions, 7024 events (3027/7023 cut-off events. For 89276/91162 co-relation queries the response was YES. Maximal size of possible extension queue 1303. Compared 72243 event pairs, 85 based on Foata normal form. 84/7880 useless extension candidates. Maximal degree in co-relation 63558. Up to 2246 conditions per place.). - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (61states, 38/140 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 93235 conditions, 7024 events (3027/7023 cut-off events. For 89276/91162 co-relation queries the response was YES. Maximal size of possible extension queue 1303. Compared 72243 event pairs, 85 based on Foata normal form. 84/7880 useless extension candidates. Maximal degree in co-relation 63558. Up to 2246 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 153 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 822.7s, OverallIterations: 19, TraceHistogramMax: 2, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 779.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 20215 SdHoareTripleChecker+Valid, 24.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20215 mSDsluCounter, 35062 SdHoareTripleChecker+Invalid, 21.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 243 IncrementalHoareTripleChecker+Unchecked, 33763 mSDsCounter, 3823 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56889 IncrementalHoareTripleChecker+Invalid, 60956 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3823 mSolverCounterUnsat, 1299 mSDtfsCounter, 56889 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5937 GetRequests, 3142 SyntacticMatches, 3 SemanticMatches, 2792 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 257186 ImplicationChecksByTransitivity, 103.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=568380occurred in iteration=18, InterpolantAutomatonStates: 2043, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 37.4s InterpolantComputationTime, 4076 NumberOfCodeBlocks, 4049 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 5801 ConstructedInterpolants, 85 QuantifiedInterpolants, 68433 SizeOfPredicates, 330 NumberOfNonLiveVariables, 3951 ConjunctsInSsa, 509 ConjunctsInUnsatCore, 47 InterpolantComputations, 5 PerfectInterpolantSequences, 87/573 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown