/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-more-queue-add-2-nl.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 22:42:50,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 22:42:50,638 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 22:42:50,668 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 22:42:50,668 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 22:42:50,669 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 22:42:50,669 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 22:42:50,670 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 22:42:50,670 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 22:42:50,674 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 22:42:50,675 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 22:42:50,675 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 22:42:50,675 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 22:42:50,676 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 22:42:50,676 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 22:42:50,677 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 22:42:50,677 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 22:42:50,677 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 22:42:50,677 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 22:42:50,677 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 22:42:50,678 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 22:42:50,678 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 22:42:50,679 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 22:42:50,679 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 22:42:50,679 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 22:42:50,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 22:42:50,680 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 22:42:50,681 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 22:42:50,681 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 22:42:50,681 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 22:42:50,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 22:42:50,682 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 22:42:50,682 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 22:42:50,683 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 22:42:50,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 22:42:50,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 22:42:50,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 22:42:50,936 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 22:42:50,936 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 22:42:50,937 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c [2023-11-29 22:42:52,151 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 22:42:52,362 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 22:42:52,363 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c [2023-11-29 22:42:52,371 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f74d3e53f/5e0c8adaba2a43d3bd65d4cda033e758/FLAG896ae443a [2023-11-29 22:42:52,387 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f74d3e53f/5e0c8adaba2a43d3bd65d4cda033e758 [2023-11-29 22:42:52,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 22:42:52,391 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 22:42:52,393 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 22:42:52,393 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 22:42:52,397 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 22:42:52,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:42:52" (1/1) ... [2023-11-29 22:42:52,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2515794a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:42:52, skipping insertion in model container [2023-11-29 22:42:52,400 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:42:52" (1/1) ... [2023-11-29 22:42:52,425 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 22:42:52,608 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-more-queue-add-2-nl.wvr.c[2896,2909] [2023-11-29 22:42:52,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 22:42:52,633 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 22:42:52,670 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-more-queue-add-2-nl.wvr.c[2896,2909] [2023-11-29 22:42:52,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 22:42:52,683 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 22:42:52,683 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 22:42:52,690 INFO L206 MainTranslator]: Completed translation [2023-11-29 22:42:52,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:42:52 WrapperNode [2023-11-29 22:42:52,690 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 22:42:52,692 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 22:42:52,692 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 22:42:52,692 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 22:42:52,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:42:52" (1/1) ... [2023-11-29 22:42:52,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:42:52" (1/1) ... [2023-11-29 22:42:52,747 INFO L138 Inliner]: procedures = 25, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 171 [2023-11-29 22:42:52,748 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 22:42:52,748 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 22:42:52,749 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 22:42:52,751 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 22:42:52,758 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:42:52" (1/1) ... [2023-11-29 22:42:52,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:42:52" (1/1) ... [2023-11-29 22:42:52,768 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:42:52" (1/1) ... [2023-11-29 22:42:52,769 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:42:52" (1/1) ... [2023-11-29 22:42:52,778 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:42:52" (1/1) ... [2023-11-29 22:42:52,781 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:42:52" (1/1) ... [2023-11-29 22:42:52,786 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:42:52" (1/1) ... [2023-11-29 22:42:52,788 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:42:52" (1/1) ... [2023-11-29 22:42:52,790 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 22:42:52,791 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 22:42:52,791 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 22:42:52,791 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 22:42:52,796 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:42:52" (1/1) ... [2023-11-29 22:42:52,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 22:42:52,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:42:52,835 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 22:42:52,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 22:42:52,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 22:42:52,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 22:42:52,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 22:42:52,867 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 22:42:52,867 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 22:42:52,867 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 22:42:52,867 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 22:42:52,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 22:42:52,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 22:42:52,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 22:42:52,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 22:42:52,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 22:42:52,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 22:42:52,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 22:42:52,869 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 22:42:52,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-29 22:42:52,952 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 22:42:52,954 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 22:42:53,191 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 22:42:53,316 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 22:42:53,317 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 22:42:53,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:42:53 BoogieIcfgContainer [2023-11-29 22:42:53,336 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 22:42:53,338 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 22:42:53,338 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 22:42:53,340 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 22:42:53,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:42:52" (1/3) ... [2023-11-29 22:42:53,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651169ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:42:53, skipping insertion in model container [2023-11-29 22:42:53,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:42:52" (2/3) ... [2023-11-29 22:42:53,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@651169ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:42:53, skipping insertion in model container [2023-11-29 22:42:53,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:42:53" (3/3) ... [2023-11-29 22:42:53,342 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2023-11-29 22:42:53,358 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 22:42:53,358 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 22:42:53,358 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 22:42:53,422 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 22:42:53,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 150 transitions, 314 flow [2023-11-29 22:42:53,502 INFO L124 PetriNetUnfolderBase]: 11/148 cut-off events. [2023-11-29 22:42:53,502 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 22:42:53,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 148 events. 11/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 110. Up to 3 conditions per place. [2023-11-29 22:42:53,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 150 transitions, 314 flow [2023-11-29 22:42:53,511 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 139 transitions, 290 flow [2023-11-29 22:42:53,519 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 22:42:53,524 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;@cf57d7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 22:42:53,524 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-29 22:42:53,551 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 22:42:53,551 INFO L124 PetriNetUnfolderBase]: 11/138 cut-off events. [2023-11-29 22:42:53,551 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 22:42:53,551 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:42:53,552 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] [2023-11-29 22:42:53,552 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 22:42:53,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:42:53,557 INFO L85 PathProgramCache]: Analyzing trace with hash 572280025, now seen corresponding path program 1 times [2023-11-29 22:42:53,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:42:53,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422964524] [2023-11-29 22:42:53,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:42:53,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:42:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:42:53,843 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 22:42:53,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:42:53,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422964524] [2023-11-29 22:42:53,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422964524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:42:53,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:42:53,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 22:42:53,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264999363] [2023-11-29 22:42:53,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:42:53,851 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 22:42:53,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:42:53,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 22:42:53,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 22:42:53,878 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 150 [2023-11-29 22:42:53,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 139 transitions, 290 flow. Second operand has 2 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states 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 22:42:53,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:42:53,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 150 [2023-11-29 22:42:53,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:42:53,953 INFO L124 PetriNetUnfolderBase]: 12/167 cut-off events. [2023-11-29 22:42:53,953 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-29 22:42:53,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 167 events. 12/167 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 220 event pairs, 5 based on Foata normal form. 14/170 useless extension candidates. Maximal degree in co-relation 108. Up to 22 conditions per place. [2023-11-29 22:42:53,958 INFO L140 encePairwiseOnDemand]: 142/150 looper letters, 7 selfloop transitions, 0 changer transitions 4/131 dead transitions. [2023-11-29 22:42:53,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 131 transitions, 288 flow [2023-11-29 22:42:53,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 22:42:53,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-29 22:42:53,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 283 transitions. [2023-11-29 22:42:53,975 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.9433333333333334 [2023-11-29 22:42:53,975 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 283 transitions. [2023-11-29 22:42:53,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 283 transitions. [2023-11-29 22:42:53,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:42:53,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 283 transitions. [2023-11-29 22:42:53,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states 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 22:42:53,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states 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 22:42:53,994 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states 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 22:42:53,999 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 1 predicate places. [2023-11-29 22:42:53,999 INFO L500 AbstractCegarLoop]: Abstraction has has 136 places, 131 transitions, 288 flow [2023-11-29 22:42:53,999 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states 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 22:42:54,000 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:42:54,000 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] [2023-11-29 22:42:54,001 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 22:42:54,001 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 22:42:54,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:42:54,002 INFO L85 PathProgramCache]: Analyzing trace with hash -451832719, now seen corresponding path program 1 times [2023-11-29 22:42:54,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:42:54,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61516644] [2023-11-29 22:42:54,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:42:54,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:42:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:42:54,305 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 22:42:54,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:42:54,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61516644] [2023-11-29 22:42:54,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61516644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:42:54,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:42:54,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 22:42:54,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777166266] [2023-11-29 22:42:54,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:42:54,309 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 22:42:54,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:42:54,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 22:42:54,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 22:42:54,311 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 150 [2023-11-29 22:42:54,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 131 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 22:42:54,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:42:54,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 150 [2023-11-29 22:42:54,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:42:54,398 INFO L124 PetriNetUnfolderBase]: 13/170 cut-off events. [2023-11-29 22:42:54,399 INFO L125 PetriNetUnfolderBase]: For 36/42 co-relation queries the response was YES. [2023-11-29 22:42:54,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 170 events. 13/170 cut-off events. For 36/42 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 230 event pairs, 1 based on Foata normal form. 1/160 useless extension candidates. Maximal degree in co-relation 124. Up to 25 conditions per place. [2023-11-29 22:42:54,401 INFO L140 encePairwiseOnDemand]: 146/150 looper letters, 11 selfloop transitions, 3 changer transitions 4/134 dead transitions. [2023-11-29 22:42:54,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 134 transitions, 331 flow [2023-11-29 22:42:54,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 22:42:54,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 22:42:54,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 405 transitions. [2023-11-29 22:42:54,404 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.9 [2023-11-29 22:42:54,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 405 transitions. [2023-11-29 22:42:54,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 405 transitions. [2023-11-29 22:42:54,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:42:54,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 405 transitions. [2023-11-29 22:42:54,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states 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 22:42:54,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states 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 22:42:54,410 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states 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 22:42:54,410 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 3 predicate places. [2023-11-29 22:42:54,411 INFO L500 AbstractCegarLoop]: Abstraction has has 138 places, 134 transitions, 331 flow [2023-11-29 22:42:54,411 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 22:42:54,411 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:42:54,412 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] [2023-11-29 22:42:54,412 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 22:42:54,412 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 22:42:54,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:42:54,414 INFO L85 PathProgramCache]: Analyzing trace with hash -510469363, now seen corresponding path program 2 times [2023-11-29 22:42:54,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:42:54,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396556440] [2023-11-29 22:42:54,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:42:54,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:42:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:42:54,700 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 22:42:54,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:42:54,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396556440] [2023-11-29 22:42:54,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396556440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:42:54,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:42:54,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 22:42:54,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095558580] [2023-11-29 22:42:54,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:42:54,704 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 22:42:54,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:42:54,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 22:42:54,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 22:42:54,711 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 150 [2023-11-29 22:42:54,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 134 transitions, 331 flow. Second operand has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 0 states 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 22:42:54,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:42:54,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 150 [2023-11-29 22:42:54,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:42:54,863 INFO L124 PetriNetUnfolderBase]: 12/213 cut-off events. [2023-11-29 22:42:54,863 INFO L125 PetriNetUnfolderBase]: For 81/89 co-relation queries the response was YES. [2023-11-29 22:42:54,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 213 events. 12/213 cut-off events. For 81/89 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 316 event pairs, 1 based on Foata normal form. 4/204 useless extension candidates. Maximal degree in co-relation 195. Up to 23 conditions per place. [2023-11-29 22:42:54,866 INFO L140 encePairwiseOnDemand]: 138/150 looper letters, 23 selfloop transitions, 8 changer transitions 10/144 dead transitions. [2023-11-29 22:42:54,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 144 transitions, 439 flow [2023-11-29 22:42:54,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 22:42:54,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 22:42:54,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1089 transitions. [2023-11-29 22:42:54,871 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8066666666666666 [2023-11-29 22:42:54,871 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1089 transitions. [2023-11-29 22:42:54,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1089 transitions. [2023-11-29 22:42:54,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:42:54,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1089 transitions. [2023-11-29 22:42:54,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 121.0) internal successors, (1089), 9 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states 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 22:42:54,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 150.0) internal successors, (1500), 10 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states 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 22:42:54,878 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 150.0) internal successors, (1500), 10 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states 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 22:42:54,878 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 11 predicate places. [2023-11-29 22:42:54,879 INFO L500 AbstractCegarLoop]: Abstraction has has 146 places, 144 transitions, 439 flow [2023-11-29 22:42:54,879 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 0 states 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 22:42:54,879 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:42:54,879 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, 1, 1, 1, 1] [2023-11-29 22:42:54,880 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 22:42:54,880 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 22:42:54,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:42:54,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1958211517, now seen corresponding path program 1 times [2023-11-29 22:42:54,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:42:54,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194542415] [2023-11-29 22:42:54,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:42:54,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:42:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:42:55,885 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 22:42:55,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:42:55,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194542415] [2023-11-29 22:42:55,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194542415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:42:55,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:42:55,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-29 22:42:55,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104007464] [2023-11-29 22:42:55,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:42:55,890 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 22:42:55,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:42:55,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 22:42:55,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-11-29 22:42:55,895 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 150 [2023-11-29 22:42:55,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 144 transitions, 439 flow. Second operand has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:42:55,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:42:55,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 150 [2023-11-29 22:42:55,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:42:56,442 INFO L124 PetriNetUnfolderBase]: 147/552 cut-off events. [2023-11-29 22:42:56,443 INFO L125 PetriNetUnfolderBase]: For 687/711 co-relation queries the response was YES. [2023-11-29 22:42:56,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 552 events. 147/552 cut-off events. For 687/711 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2431 event pairs, 14 based on Foata normal form. 3/516 useless extension candidates. Maximal degree in co-relation 779. Up to 188 conditions per place. [2023-11-29 22:42:56,447 INFO L140 encePairwiseOnDemand]: 128/150 looper letters, 82 selfloop transitions, 26 changer transitions 20/207 dead transitions. [2023-11-29 22:42:56,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 207 transitions, 996 flow [2023-11-29 22:42:56,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 22:42:56,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-29 22:42:56,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2073 transitions. [2023-11-29 22:42:56,453 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6008695652173913 [2023-11-29 22:42:56,453 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2073 transitions. [2023-11-29 22:42:56,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2073 transitions. [2023-11-29 22:42:56,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:42:56,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2073 transitions. [2023-11-29 22:42:56,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 90.1304347826087) internal successors, (2073), 23 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states 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 22:42:56,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 150.0) internal successors, (3600), 24 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states 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 22:42:56,467 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 150.0) internal successors, (3600), 24 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states 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 22:42:56,469 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 33 predicate places. [2023-11-29 22:42:56,469 INFO L500 AbstractCegarLoop]: Abstraction has has 168 places, 207 transitions, 996 flow [2023-11-29 22:42:56,470 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:42:56,470 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:42:56,470 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, 1, 1, 1, 1] [2023-11-29 22:42:56,470 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 22:42:56,470 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 22:42:56,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:42:56,471 INFO L85 PathProgramCache]: Analyzing trace with hash -168913853, now seen corresponding path program 2 times [2023-11-29 22:42:56,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:42:56,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852025658] [2023-11-29 22:42:56,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:42:56,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:42:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:42:57,266 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 22:42:57,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:42:57,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852025658] [2023-11-29 22:42:57,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852025658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:42:57,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:42:57,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-29 22:42:57,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262705073] [2023-11-29 22:42:57,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:42:57,267 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 22:42:57,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:42:57,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 22:42:57,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-29 22:42:57,270 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 150 [2023-11-29 22:42:57,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 207 transitions, 996 flow. Second operand has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:42:57,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:42:57,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 150 [2023-11-29 22:42:57,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:42:57,709 INFO L124 PetriNetUnfolderBase]: 158/627 cut-off events. [2023-11-29 22:42:57,709 INFO L125 PetriNetUnfolderBase]: For 1085/1199 co-relation queries the response was YES. [2023-11-29 22:42:57,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1866 conditions, 627 events. 158/627 cut-off events. For 1085/1199 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3014 event pairs, 19 based on Foata normal form. 3/584 useless extension candidates. Maximal degree in co-relation 1122. Up to 239 conditions per place. [2023-11-29 22:42:57,714 INFO L140 encePairwiseOnDemand]: 128/150 looper letters, 100 selfloop transitions, 36 changer transitions 27/242 dead transitions. [2023-11-29 22:42:57,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 242 transitions, 1538 flow [2023-11-29 22:42:57,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 22:42:57,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-29 22:42:57,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1812 transitions. [2023-11-29 22:42:57,720 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.604 [2023-11-29 22:42:57,720 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1812 transitions. [2023-11-29 22:42:57,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1812 transitions. [2023-11-29 22:42:57,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:42:57,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1812 transitions. [2023-11-29 22:42:57,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 90.6) internal successors, (1812), 20 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states 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 22:42:57,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states 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 22:42:57,732 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states 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 22:42:57,734 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 52 predicate places. [2023-11-29 22:42:57,734 INFO L500 AbstractCegarLoop]: Abstraction has has 187 places, 242 transitions, 1538 flow [2023-11-29 22:42:57,735 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:42:57,735 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:42:57,736 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, 1, 1, 1, 1] [2023-11-29 22:42:57,736 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 22:42:57,736 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 22:42:57,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:42:57,737 INFO L85 PathProgramCache]: Analyzing trace with hash -24463697, now seen corresponding path program 3 times [2023-11-29 22:42:57,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:42:57,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754083870] [2023-11-29 22:42:57,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:42:57,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:42:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:42:58,342 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 22:42:58,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:42:58,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754083870] [2023-11-29 22:42:58,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754083870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:42:58,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:42:58,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-29 22:42:58,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227682208] [2023-11-29 22:42:58,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:42:58,343 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 22:42:58,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:42:58,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 22:42:58,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-11-29 22:42:58,346 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 150 [2023-11-29 22:42:58,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 242 transitions, 1538 flow. Second operand has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:42:58,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:42:58,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 150 [2023-11-29 22:42:58,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:42:58,715 INFO L124 PetriNetUnfolderBase]: 160/645 cut-off events. [2023-11-29 22:42:58,715 INFO L125 PetriNetUnfolderBase]: For 1530/1924 co-relation queries the response was YES. [2023-11-29 22:42:58,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2338 conditions, 645 events. 160/645 cut-off events. For 1530/1924 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3164 event pairs, 19 based on Foata normal form. 35/633 useless extension candidates. Maximal degree in co-relation 1421. Up to 260 conditions per place. [2023-11-29 22:42:58,720 INFO L140 encePairwiseOnDemand]: 128/150 looper letters, 105 selfloop transitions, 34 changer transitions 35/253 dead transitions. [2023-11-29 22:42:58,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 253 transitions, 1968 flow [2023-11-29 22:42:58,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 22:42:58,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 22:42:58,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1892 transitions. [2023-11-29 22:42:58,725 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6006349206349206 [2023-11-29 22:42:58,725 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1892 transitions. [2023-11-29 22:42:58,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1892 transitions. [2023-11-29 22:42:58,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:42:58,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1892 transitions. [2023-11-29 22:42:58,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 90.0952380952381) internal successors, (1892), 21 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states 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 22:42:58,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 150.0) internal successors, (3300), 22 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states 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 22:42:58,735 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 150.0) internal successors, (3300), 22 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states 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 22:42:58,736 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 72 predicate places. [2023-11-29 22:42:58,736 INFO L500 AbstractCegarLoop]: Abstraction has has 207 places, 253 transitions, 1968 flow [2023-11-29 22:42:58,737 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:42:58,737 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:42:58,737 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, 1, 1, 1, 1] [2023-11-29 22:42:58,737 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 22:42:58,737 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 22:42:58,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:42:58,738 INFO L85 PathProgramCache]: Analyzing trace with hash -814852709, now seen corresponding path program 4 times [2023-11-29 22:42:58,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:42:58,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711104323] [2023-11-29 22:42:58,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:42:58,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:42:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:42:59,421 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 22:42:59,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:42:59,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711104323] [2023-11-29 22:42:59,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711104323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:42:59,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:42:59,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-29 22:42:59,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298676914] [2023-11-29 22:42:59,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:42:59,426 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 22:42:59,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:42:59,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 22:42:59,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-29 22:42:59,428 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 150 [2023-11-29 22:42:59,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 253 transitions, 1968 flow. Second operand has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:42:59,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:42:59,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 150 [2023-11-29 22:42:59,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:42:59,815 INFO L124 PetriNetUnfolderBase]: 163/676 cut-off events. [2023-11-29 22:42:59,815 INFO L125 PetriNetUnfolderBase]: For 2025/2231 co-relation queries the response was YES. [2023-11-29 22:42:59,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2866 conditions, 676 events. 163/676 cut-off events. For 2025/2231 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3469 event pairs, 14 based on Foata normal form. 31/661 useless extension candidates. Maximal degree in co-relation 1829. Up to 273 conditions per place. [2023-11-29 22:42:59,820 INFO L140 encePairwiseOnDemand]: 128/150 looper letters, 107 selfloop transitions, 35 changer transitions 42/263 dead transitions. [2023-11-29 22:42:59,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 263 transitions, 2441 flow [2023-11-29 22:42:59,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 22:42:59,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-29 22:42:59,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1985 transitions. [2023-11-29 22:42:59,825 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6015151515151516 [2023-11-29 22:42:59,825 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1985 transitions. [2023-11-29 22:42:59,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1985 transitions. [2023-11-29 22:42:59,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:42:59,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1985 transitions. [2023-11-29 22:42:59,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 90.22727272727273) internal successors, (1985), 22 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states 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 22:42:59,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 150.0) internal successors, (3450), 23 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states 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 22:42:59,837 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 150.0) internal successors, (3450), 23 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states 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 22:42:59,838 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 93 predicate places. [2023-11-29 22:42:59,838 INFO L500 AbstractCegarLoop]: Abstraction has has 228 places, 263 transitions, 2441 flow [2023-11-29 22:42:59,839 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:42:59,839 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:42:59,839 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, 1, 1, 1, 1] [2023-11-29 22:42:59,839 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 22:42:59,839 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 22:42:59,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:42:59,840 INFO L85 PathProgramCache]: Analyzing trace with hash 673463201, now seen corresponding path program 5 times [2023-11-29 22:42:59,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:42:59,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258414047] [2023-11-29 22:42:59,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:42:59,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:42:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:43:00,484 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 22:43:00,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:43:00,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258414047] [2023-11-29 22:43:00,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258414047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:43:00,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:43:00,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-29 22:43:00,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402637101] [2023-11-29 22:43:00,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:43:00,485 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 22:43:00,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:43:00,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 22:43:00,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-11-29 22:43:00,487 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 150 [2023-11-29 22:43:00,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 263 transitions, 2441 flow. Second operand has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:43:00,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:43:00,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 150 [2023-11-29 22:43:00,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:43:00,876 INFO L124 PetriNetUnfolderBase]: 168/699 cut-off events. [2023-11-29 22:43:00,877 INFO L125 PetriNetUnfolderBase]: For 2827/3115 co-relation queries the response was YES. [2023-11-29 22:43:00,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3452 conditions, 699 events. 168/699 cut-off events. For 2827/3115 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3696 event pairs, 17 based on Foata normal form. 13/662 useless extension candidates. Maximal degree in co-relation 2064. Up to 292 conditions per place. [2023-11-29 22:43:00,883 INFO L140 encePairwiseOnDemand]: 128/150 looper letters, 112 selfloop transitions, 37 changer transitions 49/277 dead transitions. [2023-11-29 22:43:00,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 277 transitions, 3011 flow [2023-11-29 22:43:00,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 22:43:00,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-29 22:43:00,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1811 transitions. [2023-11-29 22:43:00,890 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6036666666666667 [2023-11-29 22:43:00,890 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1811 transitions. [2023-11-29 22:43:00,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1811 transitions. [2023-11-29 22:43:00,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:43:00,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1811 transitions. [2023-11-29 22:43:00,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 90.55) internal successors, (1811), 20 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states 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 22:43:00,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states 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 22:43:00,901 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states 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 22:43:00,902 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 112 predicate places. [2023-11-29 22:43:00,903 INFO L500 AbstractCegarLoop]: Abstraction has has 247 places, 277 transitions, 3011 flow [2023-11-29 22:43:00,904 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:43:00,904 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:43:00,904 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, 1, 1, 1, 1] [2023-11-29 22:43:00,904 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 22:43:00,904 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 22:43:00,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:43:00,905 INFO L85 PathProgramCache]: Analyzing trace with hash 480103595, now seen corresponding path program 6 times [2023-11-29 22:43:00,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:43:00,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894216422] [2023-11-29 22:43:00,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:43:00,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:43:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:43:01,507 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 22:43:01,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:43:01,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894216422] [2023-11-29 22:43:01,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894216422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:43:01,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:43:01,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-29 22:43:01,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256562170] [2023-11-29 22:43:01,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:43:01,509 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 22:43:01,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:43:01,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 22:43:01,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-11-29 22:43:01,511 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 150 [2023-11-29 22:43:01,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 277 transitions, 3011 flow. Second operand has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:43:01,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:43:01,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 150 [2023-11-29 22:43:01,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:43:01,942 INFO L124 PetriNetUnfolderBase]: 173/748 cut-off events. [2023-11-29 22:43:01,943 INFO L125 PetriNetUnfolderBase]: For 3904/4338 co-relation queries the response was YES. [2023-11-29 22:43:01,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4104 conditions, 748 events. 173/748 cut-off events. For 3904/4338 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4135 event pairs, 18 based on Foata normal form. 15/711 useless extension candidates. Maximal degree in co-relation 2488. Up to 311 conditions per place. [2023-11-29 22:43:01,949 INFO L140 encePairwiseOnDemand]: 128/150 looper letters, 119 selfloop transitions, 38 changer transitions 56/292 dead transitions. [2023-11-29 22:43:01,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 292 transitions, 3669 flow [2023-11-29 22:43:01,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 22:43:01,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-29 22:43:01,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1812 transitions. [2023-11-29 22:43:01,953 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.604 [2023-11-29 22:43:01,953 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1812 transitions. [2023-11-29 22:43:01,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1812 transitions. [2023-11-29 22:43:01,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:43:01,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1812 transitions. [2023-11-29 22:43:01,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 90.6) internal successors, (1812), 20 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states 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 22:43:01,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states 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 22:43:01,974 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states 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 22:43:01,975 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 131 predicate places. [2023-11-29 22:43:01,975 INFO L500 AbstractCegarLoop]: Abstraction has has 266 places, 292 transitions, 3669 flow [2023-11-29 22:43:01,975 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:43:01,976 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:43:01,976 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, 1, 1, 1, 1] [2023-11-29 22:43:01,976 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 22:43:01,976 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 22:43:01,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:43:01,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1475593155, now seen corresponding path program 7 times [2023-11-29 22:43:01,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:43:01,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508780111] [2023-11-29 22:43:01,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:43:01,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:43:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:43:02,516 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 22:43:02,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:43:02,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508780111] [2023-11-29 22:43:02,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508780111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:43:02,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:43:02,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-29 22:43:02,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249049226] [2023-11-29 22:43:02,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:43:02,517 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 22:43:02,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:43:02,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 22:43:02,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-11-29 22:43:02,520 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 150 [2023-11-29 22:43:02,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 292 transitions, 3669 flow. Second operand has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:43:02,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:43:02,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 150 [2023-11-29 22:43:02,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:43:02,907 INFO L124 PetriNetUnfolderBase]: 175/764 cut-off events. [2023-11-29 22:43:02,907 INFO L125 PetriNetUnfolderBase]: For 5114/5712 co-relation queries the response was YES. [2023-11-29 22:43:02,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4688 conditions, 764 events. 175/764 cut-off events. For 5114/5712 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4265 event pairs, 20 based on Foata normal form. 13/722 useless extension candidates. Maximal degree in co-relation 2846. Up to 319 conditions per place. [2023-11-29 22:43:02,914 INFO L140 encePairwiseOnDemand]: 128/150 looper letters, 125 selfloop transitions, 35 changer transitions 64/303 dead transitions. [2023-11-29 22:43:02,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 303 transitions, 4287 flow [2023-11-29 22:43:02,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 22:43:02,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-29 22:43:02,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1808 transitions. [2023-11-29 22:43:02,917 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6026666666666667 [2023-11-29 22:43:02,917 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1808 transitions. [2023-11-29 22:43:02,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1808 transitions. [2023-11-29 22:43:02,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:43:02,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1808 transitions. [2023-11-29 22:43:02,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 90.4) internal successors, (1808), 20 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states 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 22:43:02,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states 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 22:43:02,924 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states 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 22:43:02,924 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 150 predicate places. [2023-11-29 22:43:02,924 INFO L500 AbstractCegarLoop]: Abstraction has has 285 places, 303 transitions, 4287 flow [2023-11-29 22:43:02,925 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:43:02,925 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:43:02,925 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, 1, 1, 1, 1] [2023-11-29 22:43:02,925 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 22:43:02,925 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 22:43:02,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:43:02,926 INFO L85 PathProgramCache]: Analyzing trace with hash -505320899, now seen corresponding path program 8 times [2023-11-29 22:43:02,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:43:02,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711348912] [2023-11-29 22:43:02,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:43:02,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:43:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:43:03,545 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 22:43:03,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:43:03,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711348912] [2023-11-29 22:43:03,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711348912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:43:03,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:43:03,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-29 22:43:03,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855869851] [2023-11-29 22:43:03,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:43:03,547 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 22:43:03,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:43:03,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 22:43:03,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-29 22:43:03,549 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 150 [2023-11-29 22:43:03,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 303 transitions, 4287 flow. Second operand has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:43:03,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:43:03,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 150 [2023-11-29 22:43:03,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:43:03,924 INFO L124 PetriNetUnfolderBase]: 178/777 cut-off events. [2023-11-29 22:43:03,924 INFO L125 PetriNetUnfolderBase]: For 6172/6766 co-relation queries the response was YES. [2023-11-29 22:43:03,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5320 conditions, 777 events. 178/777 cut-off events. For 6172/6766 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4449 event pairs, 15 based on Foata normal form. 15/739 useless extension candidates. Maximal degree in co-relation 3533. Up to 332 conditions per place. [2023-11-29 22:43:03,931 INFO L140 encePairwiseOnDemand]: 128/150 looper letters, 127 selfloop transitions, 36 changer transitions 71/313 dead transitions. [2023-11-29 22:43:03,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 313 transitions, 4940 flow [2023-11-29 22:43:03,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 22:43:03,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 22:43:03,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1901 transitions. [2023-11-29 22:43:03,936 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6034920634920635 [2023-11-29 22:43:03,936 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1901 transitions. [2023-11-29 22:43:03,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1901 transitions. [2023-11-29 22:43:03,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:43:03,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1901 transitions. [2023-11-29 22:43:03,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 90.52380952380952) internal successors, (1901), 21 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states 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 22:43:03,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 150.0) internal successors, (3300), 22 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states 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 22:43:03,946 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 150.0) internal successors, (3300), 22 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states 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 22:43:03,946 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 170 predicate places. [2023-11-29 22:43:03,947 INFO L500 AbstractCegarLoop]: Abstraction has has 305 places, 313 transitions, 4940 flow [2023-11-29 22:43:03,947 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:43:03,947 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:43:03,947 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, 1, 1, 1, 1] [2023-11-29 22:43:03,947 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 22:43:03,947 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 22:43:03,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:43:03,948 INFO L85 PathProgramCache]: Analyzing trace with hash -528383475, now seen corresponding path program 9 times [2023-11-29 22:43:03,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:43:03,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984588930] [2023-11-29 22:43:03,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:43:03,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:43:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:43:04,547 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 22:43:04,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:43:04,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984588930] [2023-11-29 22:43:04,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984588930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:43:04,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:43:04,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-29 22:43:04,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651534981] [2023-11-29 22:43:04,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:43:04,548 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 22:43:04,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:43:04,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 22:43:04,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-11-29 22:43:04,551 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 150 [2023-11-29 22:43:04,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 313 transitions, 4940 flow. Second operand has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:43:04,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:43:04,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 150 [2023-11-29 22:43:04,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:43:05,050 INFO L124 PetriNetUnfolderBase]: 181/802 cut-off events. [2023-11-29 22:43:05,051 INFO L125 PetriNetUnfolderBase]: For 7772/8458 co-relation queries the response was YES. [2023-11-29 22:43:05,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5992 conditions, 802 events. 181/802 cut-off events. For 7772/8458 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4714 event pairs, 14 based on Foata normal form. 7/754 useless extension candidates. Maximal degree in co-relation 3749. Up to 345 conditions per place. [2023-11-29 22:43:05,058 INFO L140 encePairwiseOnDemand]: 129/150 looper letters, 129 selfloop transitions, 40 changer transitions 78/326 dead transitions. [2023-11-29 22:43:05,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 326 transitions, 5720 flow [2023-11-29 22:43:05,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 22:43:05,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-29 22:43:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1813 transitions. [2023-11-29 22:43:05,062 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6043333333333333 [2023-11-29 22:43:05,062 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1813 transitions. [2023-11-29 22:43:05,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1813 transitions. [2023-11-29 22:43:05,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:43:05,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1813 transitions. [2023-11-29 22:43:05,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 90.65) internal successors, (1813), 20 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states 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 22:43:05,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states 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 22:43:05,070 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states 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 22:43:05,071 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 189 predicate places. [2023-11-29 22:43:05,071 INFO L500 AbstractCegarLoop]: Abstraction has has 324 places, 326 transitions, 5720 flow [2023-11-29 22:43:05,071 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:43:05,071 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:43:05,071 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, 1, 1, 1, 1] [2023-11-29 22:43:05,071 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 22:43:05,072 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 22:43:05,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:43:05,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1737313445, now seen corresponding path program 10 times [2023-11-29 22:43:05,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:43:05,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485812307] [2023-11-29 22:43:05,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:43:05,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:43:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:43:05,547 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 22:43:05,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:43:05,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485812307] [2023-11-29 22:43:05,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485812307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:43:05,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:43:05,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-29 22:43:05,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41910006] [2023-11-29 22:43:05,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:43:05,548 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 22:43:05,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:43:05,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 22:43:05,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-11-29 22:43:05,551 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 150 [2023-11-29 22:43:05,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 326 transitions, 5720 flow. Second operand has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:43:05,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:43:05,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 150 [2023-11-29 22:43:05,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:43:05,972 INFO L124 PetriNetUnfolderBase]: 183/810 cut-off events. [2023-11-29 22:43:05,972 INFO L125 PetriNetUnfolderBase]: For 9486/10510 co-relation queries the response was YES. [2023-11-29 22:43:05,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6644 conditions, 810 events. 183/810 cut-off events. For 9486/10510 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4767 event pairs, 17 based on Foata normal form. 5/757 useless extension candidates. Maximal degree in co-relation 4509. Up to 353 conditions per place. [2023-11-29 22:43:05,980 INFO L140 encePairwiseOnDemand]: 128/150 looper letters, 135 selfloop transitions, 37 changer transitions 86/337 dead transitions. [2023-11-29 22:43:05,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 337 transitions, 6472 flow [2023-11-29 22:43:05,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 22:43:05,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-29 22:43:05,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1809 transitions. [2023-11-29 22:43:05,983 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.603 [2023-11-29 22:43:05,984 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1809 transitions. [2023-11-29 22:43:05,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1809 transitions. [2023-11-29 22:43:05,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:43:05,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1809 transitions. [2023-11-29 22:43:05,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 90.45) internal successors, (1809), 20 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states 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 22:43:05,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states 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 22:43:05,991 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states 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 22:43:05,991 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 208 predicate places. [2023-11-29 22:43:05,992 INFO L500 AbstractCegarLoop]: Abstraction has has 343 places, 337 transitions, 6472 flow [2023-11-29 22:43:05,992 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:43:05,992 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:43:05,992 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, 1, 1, 1, 1] [2023-11-29 22:43:05,992 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 22:43:05,993 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 22:43:05,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:43:05,993 INFO L85 PathProgramCache]: Analyzing trace with hash -301741713, now seen corresponding path program 11 times [2023-11-29 22:43:05,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:43:05,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799090078] [2023-11-29 22:43:05,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:43:05,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:43:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:43:06,633 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 22:43:06,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:43:06,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799090078] [2023-11-29 22:43:06,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799090078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:43:06,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:43:06,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-29 22:43:06,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661196205] [2023-11-29 22:43:06,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:43:06,634 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 22:43:06,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:43:06,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 22:43:06,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2023-11-29 22:43:06,636 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 150 [2023-11-29 22:43:06,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 337 transitions, 6472 flow. Second operand has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:43:06,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:43:06,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 150 [2023-11-29 22:43:06,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:43:07,077 INFO L124 PetriNetUnfolderBase]: 186/847 cut-off events. [2023-11-29 22:43:07,077 INFO L125 PetriNetUnfolderBase]: For 11371/12665 co-relation queries the response was YES. [2023-11-29 22:43:07,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7382 conditions, 847 events. 186/847 cut-off events. For 11371/12665 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5116 event pairs, 16 based on Foata normal form. 5/794 useless extension candidates. Maximal degree in co-relation 4914. Up to 366 conditions per place. [2023-11-29 22:43:07,086 INFO L140 encePairwiseOnDemand]: 129/150 looper letters, 138 selfloop transitions, 37 changer transitions 93/347 dead transitions. [2023-11-29 22:43:07,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 347 transitions, 7253 flow [2023-11-29 22:43:07,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 22:43:07,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-29 22:43:07,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1817 transitions. [2023-11-29 22:43:07,089 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6056666666666667 [2023-11-29 22:43:07,089 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1817 transitions. [2023-11-29 22:43:07,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1817 transitions. [2023-11-29 22:43:07,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:43:07,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1817 transitions. [2023-11-29 22:43:07,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 90.85) internal successors, (1817), 20 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states 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 22:43:07,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states 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 22:43:07,097 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states 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 22:43:07,097 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 227 predicate places. [2023-11-29 22:43:07,098 INFO L500 AbstractCegarLoop]: Abstraction has has 362 places, 347 transitions, 7253 flow [2023-11-29 22:43:07,098 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:43:07,098 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:43:07,098 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:07,098 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 22:43:07,099 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 22:43:07,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:43:07,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1494269122, now seen corresponding path program 1 times [2023-11-29 22:43:07,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:43:07,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258790254] [2023-11-29 22:43:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:43:07,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:43:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:43:07,230 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:43:07,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:43:07,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258790254] [2023-11-29 22:43:07,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258790254] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:43:07,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309007237] [2023-11-29 22:43:07,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:43:07,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:43:07,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:43:07,236 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 22:43:07,247 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 22:43:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:43:07,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 22:43:07,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:43:07,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:43:07,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 22:43:07,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309007237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:43:07,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 22:43:07,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 22:43:07,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060508811] [2023-11-29 22:43:07,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:43:07,509 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 22:43:07,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:43:07,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 22:43:07,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-29 22:43:07,510 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 150 [2023-11-29 22:43:07,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 347 transitions, 7253 flow. Second operand has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 states 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 22:43:07,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:43:07,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 150 [2023-11-29 22:43:07,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:43:07,720 INFO L124 PetriNetUnfolderBase]: 270/1115 cut-off events. [2023-11-29 22:43:07,720 INFO L125 PetriNetUnfolderBase]: For 17182/18576 co-relation queries the response was YES. [2023-11-29 22:43:07,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10286 conditions, 1115 events. 270/1115 cut-off events. For 17182/18576 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7370 event pairs, 77 based on Foata normal form. 45/1067 useless extension candidates. Maximal degree in co-relation 7465. Up to 586 conditions per place. [2023-11-29 22:43:07,736 INFO L140 encePairwiseOnDemand]: 146/150 looper letters, 18 selfloop transitions, 11 changer transitions 179/345 dead transitions. [2023-11-29 22:43:07,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 345 transitions, 7419 flow [2023-11-29 22:43:07,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 22:43:07,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 22:43:07,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 543 transitions. [2023-11-29 22:43:07,737 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.905 [2023-11-29 22:43:07,737 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 543 transitions. [2023-11-29 22:43:07,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 543 transitions. [2023-11-29 22:43:07,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:43:07,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 543 transitions. [2023-11-29 22:43:07,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states 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 22:43:07,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states 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 22:43:07,740 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states 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 22:43:07,742 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 230 predicate places. [2023-11-29 22:43:07,742 INFO L500 AbstractCegarLoop]: Abstraction has has 365 places, 345 transitions, 7419 flow [2023-11-29 22:43:07,742 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 states 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 22:43:07,742 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:43:07,742 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:43:07,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 22:43:07,947 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,SelfDestructingSolverStorable14 [2023-11-29 22:43:07,947 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 22:43:07,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:43:07,948 INFO L85 PathProgramCache]: Analyzing trace with hash -724947872, now seen corresponding path program 1 times [2023-11-29 22:43:07,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:43:07,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931723518] [2023-11-29 22:43:07,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:43:07,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:43:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:43:08,150 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 22:43:08,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:43:08,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931723518] [2023-11-29 22:43:08,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931723518] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:43:08,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070541763] [2023-11-29 22:43:08,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:43:08,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:43:08,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:43:08,154 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 22:43:08,194 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 22:43:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:43:08,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 22:43:08,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:43:08,425 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 22:43:08,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:43:08,651 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 22:43:08,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070541763] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:43:08,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:43:08,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-11-29 22:43:08,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255894828] [2023-11-29 22:43:08,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:43:08,652 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 22:43:08,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:43:08,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 22:43:08,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-29 22:43:08,654 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 150 [2023-11-29 22:43:08,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 345 transitions, 7419 flow. Second operand has 19 states, 19 states have (on average 116.78947368421052) internal successors, (2219), 19 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states 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 22:43:08,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:43:08,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 150 [2023-11-29 22:43:08,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:43:09,184 INFO L124 PetriNetUnfolderBase]: 378/1711 cut-off events. [2023-11-29 22:43:09,184 INFO L125 PetriNetUnfolderBase]: For 28789/30733 co-relation queries the response was YES. [2023-11-29 22:43:09,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15715 conditions, 1711 events. 378/1711 cut-off events. For 28789/30733 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 13263 event pairs, 97 based on Foata normal form. 38/1610 useless extension candidates. Maximal degree in co-relation 6956. Up to 854 conditions per place. [2023-11-29 22:43:09,198 INFO L140 encePairwiseOnDemand]: 135/150 looper letters, 41 selfloop transitions, 13 changer transitions 252/423 dead transitions. [2023-11-29 22:43:09,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 423 transitions, 10208 flow [2023-11-29 22:43:09,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 22:43:09,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 22:43:09,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2108 transitions. [2023-11-29 22:43:09,207 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7807407407407407 [2023-11-29 22:43:09,207 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2108 transitions. [2023-11-29 22:43:09,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2108 transitions. [2023-11-29 22:43:09,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:43:09,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2108 transitions. [2023-11-29 22:43:09,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 117.11111111111111) internal successors, (2108), 18 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states 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 22:43:09,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 150.0) internal successors, (2850), 19 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states 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 22:43:09,213 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 150.0) internal successors, (2850), 19 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states 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 22:43:09,214 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 247 predicate places. [2023-11-29 22:43:09,214 INFO L500 AbstractCegarLoop]: Abstraction has has 382 places, 423 transitions, 10208 flow [2023-11-29 22:43:09,214 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 116.78947368421052) internal successors, (2219), 19 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states 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 22:43:09,215 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:43:09,215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:43:09,224 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 22:43:09,420 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,SelfDestructingSolverStorable15 [2023-11-29 22:43:09,421 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 22:43:09,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:43:09,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1252689560, now seen corresponding path program 2 times [2023-11-29 22:43:09,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:43:09,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834758345] [2023-11-29 22:43:09,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:43:09,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:43:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:43:10,238 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 22:43:10,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:43:10,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834758345] [2023-11-29 22:43:10,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834758345] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:43:10,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215723190] [2023-11-29 22:43:10,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 22:43:10,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:43:10,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:43:10,240 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 22:43:10,252 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 22:43:10,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 22:43:10,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:43:10,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 22:43:10,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:43:10,957 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 22:43:11,039 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 22:43:11,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:43:11,223 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 22:43:11,224 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 22:43:11,952 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 22:43:11,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215723190] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:43:11,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:43:11,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 13, 14] total 45 [2023-11-29 22:43:11,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162114343] [2023-11-29 22:43:11,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:43:11,953 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-29 22:43:11,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:43:11,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-29 22:43:11,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1629, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 22:43:11,957 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 150 [2023-11-29 22:43:11,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 423 transitions, 10208 flow. Second operand has 45 states, 45 states have (on average 70.08888888888889) internal successors, (3154), 45 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states 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 22:43:11,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:43:11,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 150 [2023-11-29 22:43:11,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:43:15,863 INFO L124 PetriNetUnfolderBase]: 3231/8824 cut-off events. [2023-11-29 22:43:15,863 INFO L125 PetriNetUnfolderBase]: For 105567/109891 co-relation queries the response was YES. [2023-11-29 22:43:15,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86376 conditions, 8824 events. 3231/8824 cut-off events. For 105567/109891 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 84343 event pairs, 1028 based on Foata normal form. 143/8131 useless extension candidates. Maximal degree in co-relation 40103. Up to 5429 conditions per place. [2023-11-29 22:43:16,016 INFO L140 encePairwiseOnDemand]: 116/150 looper letters, 262 selfloop transitions, 86 changer transitions 435/860 dead transitions. [2023-11-29 22:43:16,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 860 transitions, 23365 flow [2023-11-29 22:43:16,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-29 22:43:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2023-11-29 22:43:16,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 3870 transitions. [2023-11-29 22:43:16,023 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2023-11-29 22:43:16,023 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 3870 transitions. [2023-11-29 22:43:16,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 3870 transitions. [2023-11-29 22:43:16,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:43:16,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 3870 transitions. [2023-11-29 22:43:16,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 71.66666666666667) internal successors, (3870), 54 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states 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 22:43:16,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 150.0) internal successors, (8250), 55 states have internal predecessors, (8250), 0 states have call successors, (0), 0 states 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 22:43:16,041 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 150.0) internal successors, (8250), 55 states have internal predecessors, (8250), 0 states have call successors, (0), 0 states 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 22:43:16,041 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 300 predicate places. [2023-11-29 22:43:16,041 INFO L500 AbstractCegarLoop]: Abstraction has has 435 places, 860 transitions, 23365 flow [2023-11-29 22:43:16,042 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 70.08888888888889) internal successors, (3154), 45 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states 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 22:43:16,042 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:43:16,043 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:43:16,051 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 22:43:16,248 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:43:16,249 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 22:43:16,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:43:16,249 INFO L85 PathProgramCache]: Analyzing trace with hash 352417392, now seen corresponding path program 3 times [2023-11-29 22:43:16,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:43:16,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637809111] [2023-11-29 22:43:16,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:43:16,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:43:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:43:17,183 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 22:43:17,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:43:17,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637809111] [2023-11-29 22:43:17,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637809111] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:43:17,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808186771] [2023-11-29 22:43:17,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 22:43:17,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:43:17,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:43:17,185 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 22:43:17,211 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 22:43:17,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 22:43:17,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:43:17,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 22:43:17,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:43:17,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 22:43:17,715 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 22:43:17,783 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 22:43:17,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:43:17,950 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 22:43:17,950 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 22:43:17,956 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 22:43:18,379 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 22:43:18,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808186771] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:43:18,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:43:18,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 12] total 41 [2023-11-29 22:43:18,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007171096] [2023-11-29 22:43:18,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:43:18,381 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 22:43:18,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:43:18,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 22:43:18,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1522, Unknown=8, NotChecked=0, Total=1640 [2023-11-29 22:43:18,384 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 150 [2023-11-29 22:43:18,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 860 transitions, 23365 flow. Second operand has 41 states, 41 states have (on average 86.2439024390244) internal successors, (3536), 41 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states 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 22:43:18,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:43:18,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 150 [2023-11-29 22:43:18,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:43:23,148 INFO L124 PetriNetUnfolderBase]: 3788/9824 cut-off events. [2023-11-29 22:43:23,149 INFO L125 PetriNetUnfolderBase]: For 134303/139025 co-relation queries the response was YES. [2023-11-29 22:43:23,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103103 conditions, 9824 events. 3788/9824 cut-off events. For 134303/139025 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 91344 event pairs, 1293 based on Foata normal form. 60/9151 useless extension candidates. Maximal degree in co-relation 49946. Up to 6317 conditions per place. [2023-11-29 22:43:23,381 INFO L140 encePairwiseOnDemand]: 126/150 looper letters, 298 selfloop transitions, 87 changer transitions 440/942 dead transitions. [2023-11-29 22:43:23,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 942 transitions, 26744 flow [2023-11-29 22:43:23,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-29 22:43:23,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-11-29 22:43:23,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3932 transitions. [2023-11-29 22:43:23,385 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5825185185185185 [2023-11-29 22:43:23,385 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 3932 transitions. [2023-11-29 22:43:23,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 3932 transitions. [2023-11-29 22:43:23,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:43:23,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 3932 transitions. [2023-11-29 22:43:23,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 87.37777777777778) internal successors, (3932), 45 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states 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 22:43:23,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 150.0) internal successors, (6900), 46 states have internal predecessors, (6900), 0 states have call successors, (0), 0 states 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 22:43:23,398 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 150.0) internal successors, (6900), 46 states have internal predecessors, (6900), 0 states have call successors, (0), 0 states 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 22:43:23,399 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 343 predicate places. [2023-11-29 22:43:23,399 INFO L500 AbstractCegarLoop]: Abstraction has has 478 places, 942 transitions, 26744 flow [2023-11-29 22:43:23,400 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 86.2439024390244) internal successors, (3536), 41 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states 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 22:43:23,400 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:43:23,400 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:43:23,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 22:43:23,606 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 22:43:23,606 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 22:43:23,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:43:23,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1125969189, now seen corresponding path program 1 times [2023-11-29 22:43:23,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:43:23,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631108077] [2023-11-29 22:43:23,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:43:23,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:43:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:43:25,255 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:43:25,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:43:25,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631108077] [2023-11-29 22:43:25,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631108077] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:43:25,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463687971] [2023-11-29 22:43:25,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:43:25,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:43:25,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:43:25,257 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 22:43:25,267 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 22:43:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:43:25,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-29 22:43:25,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:43:26,259 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 22:43:26,259 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 22:43:27,081 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:43:27,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:43:28,345 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 22:43:28,345 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 32 treesize of output 24 [2023-11-29 22:43:30,090 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:43:30,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463687971] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:43:30,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:43:30,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 31, 30] total 86 [2023-11-29 22:43:30,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169524904] [2023-11-29 22:43:30,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:43:30,091 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-11-29 22:43:30,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:43:30,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-11-29 22:43:30,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=732, Invalid=6578, Unknown=0, NotChecked=0, Total=7310 [2023-11-29 22:43:30,098 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 150 [2023-11-29 22:43:30,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 942 transitions, 26744 flow. Second operand has 86 states, 86 states have (on average 50.75581395348837) internal successors, (4365), 86 states have internal predecessors, (4365), 0 states have call successors, (0), 0 states 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 22:43:30,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:43:30,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 150 [2023-11-29 22:43:30,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:43:51,815 INFO L124 PetriNetUnfolderBase]: 8109/17301 cut-off events. [2023-11-29 22:43:51,815 INFO L125 PetriNetUnfolderBase]: For 249322/252092 co-relation queries the response was YES. [2023-11-29 22:43:51,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184171 conditions, 17301 events. 8109/17301 cut-off events. For 249322/252092 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 162809 event pairs, 490 based on Foata normal form. 99/16408 useless extension candidates. Maximal degree in co-relation 95819. Up to 10475 conditions per place. [2023-11-29 22:43:52,012 INFO L140 encePairwiseOnDemand]: 99/150 looper letters, 697 selfloop transitions, 494 changer transitions 907/2137 dead transitions. [2023-11-29 22:43:52,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 673 places, 2137 transitions, 58513 flow [2023-11-29 22:43:52,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2023-11-29 22:43:52,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2023-11-29 22:43:52,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 10258 transitions. [2023-11-29 22:43:52,027 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.3489115646258503 [2023-11-29 22:43:52,027 INFO L72 ComplementDD]: Start complementDD. Operand 196 states and 10258 transitions. [2023-11-29 22:43:52,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 196 states and 10258 transitions. [2023-11-29 22:43:52,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:43:52,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 196 states and 10258 transitions. [2023-11-29 22:43:52,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 197 states, 196 states have (on average 52.33673469387755) internal successors, (10258), 196 states have internal predecessors, (10258), 0 states have call successors, (0), 0 states 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 22:43:52,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 197 states, 197 states have (on average 150.0) internal successors, (29550), 197 states have internal predecessors, (29550), 0 states have call successors, (0), 0 states 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 22:43:52,088 INFO L81 ComplementDD]: Finished complementDD. Result has 197 states, 197 states have (on average 150.0) internal successors, (29550), 197 states have internal predecessors, (29550), 0 states have call successors, (0), 0 states 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 22:43:52,089 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 538 predicate places. [2023-11-29 22:43:52,089 INFO L500 AbstractCegarLoop]: Abstraction has has 673 places, 2137 transitions, 58513 flow [2023-11-29 22:43:52,090 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 50.75581395348837) internal successors, (4365), 86 states have internal predecessors, (4365), 0 states have call successors, (0), 0 states 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 22:43:52,090 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:43:52,090 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:43:52,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 22:43:52,299 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:43:52,299 INFO L425 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:43:52,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:43:52,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1120265479, now seen corresponding path program 2 times [2023-11-29 22:43:52,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:43:52,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365037364] [2023-11-29 22:43:52,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:43:52,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:43:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:43:54,190 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:43:54,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:43:54,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365037364] [2023-11-29 22:43:54,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365037364] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:43:54,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901593156] [2023-11-29 22:43:54,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 22:43:54,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:43:54,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:43:54,192 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 22:43:54,200 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 22:43:54,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 22:43:54,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:43:54,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-29 22:43:54,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:43:55,488 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 22:43:55,920 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:43:55,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:43:56,998 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 22:43:56,998 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 32 treesize of output 24 [2023-11-29 22:43:58,529 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:43:58,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901593156] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:43:58,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:43:58,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 31, 29] total 88 [2023-11-29 22:43:58,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682244412] [2023-11-29 22:43:58,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:43:58,530 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2023-11-29 22:43:58,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:43:58,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2023-11-29 22:43:58,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=628, Invalid=7028, Unknown=0, NotChecked=0, Total=7656 [2023-11-29 22:43:58,537 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 150 [2023-11-29 22:43:58,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 673 places, 2137 transitions, 58513 flow. Second operand has 88 states, 88 states have (on average 50.88636363636363) internal successors, (4478), 88 states have internal predecessors, (4478), 0 states have call successors, (0), 0 states 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 22:43:58,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:43:58,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 150 [2023-11-29 22:43:58,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:44:27,269 INFO L124 PetriNetUnfolderBase]: 10967/23806 cut-off events. [2023-11-29 22:44:27,269 INFO L125 PetriNetUnfolderBase]: For 362458/366065 co-relation queries the response was YES. [2023-11-29 22:44:27,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273191 conditions, 23806 events. 10967/23806 cut-off events. For 362458/366065 co-relation queries the response was YES. Maximal size of possible extension queue 909. Compared 237314 event pairs, 412 based on Foata normal form. 193/22628 useless extension candidates. Maximal degree in co-relation 155882. Up to 14576 conditions per place. [2023-11-29 22:44:27,485 INFO L140 encePairwiseOnDemand]: 100/150 looper letters, 1703 selfloop transitions, 737 changer transitions 1455/3934 dead transitions. [2023-11-29 22:44:27,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 865 places, 3934 transitions, 111150 flow [2023-11-29 22:44:27,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2023-11-29 22:44:27,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2023-11-29 22:44:27,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 10325 transitions. [2023-11-29 22:44:27,496 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.35664939550949915 [2023-11-29 22:44:27,496 INFO L72 ComplementDD]: Start complementDD. Operand 193 states and 10325 transitions. [2023-11-29 22:44:27,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 193 states and 10325 transitions. [2023-11-29 22:44:27,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:44:27,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 193 states and 10325 transitions. [2023-11-29 22:44:27,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 194 states, 193 states have (on average 53.49740932642487) internal successors, (10325), 193 states have internal predecessors, (10325), 0 states have call successors, (0), 0 states 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 22:44:27,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 194 states, 194 states have (on average 150.0) internal successors, (29100), 194 states have internal predecessors, (29100), 0 states have call successors, (0), 0 states 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 22:44:27,534 INFO L81 ComplementDD]: Finished complementDD. Result has 194 states, 194 states have (on average 150.0) internal successors, (29100), 194 states have internal predecessors, (29100), 0 states have call successors, (0), 0 states 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 22:44:27,535 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 730 predicate places. [2023-11-29 22:44:27,535 INFO L500 AbstractCegarLoop]: Abstraction has has 865 places, 3934 transitions, 111150 flow [2023-11-29 22:44:27,536 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 50.88636363636363) internal successors, (4478), 88 states have internal predecessors, (4478), 0 states have call successors, (0), 0 states 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 22:44:27,536 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:44:27,536 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:44:27,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 22:44:27,741 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:44:27,741 INFO L425 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:44:27,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:44:27,742 INFO L85 PathProgramCache]: Analyzing trace with hash 501448495, now seen corresponding path program 3 times [2023-11-29 22:44:27,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:44:27,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280833029] [2023-11-29 22:44:27,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:44:27,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:44:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:44:29,291 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:44:29,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:44:29,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280833029] [2023-11-29 22:44:29,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280833029] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:44:29,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632624866] [2023-11-29 22:44:29,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 22:44:29,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:44:29,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:44:29,296 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 22:44:29,299 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 22:44:29,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 22:44:29,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:44:29,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-29 22:44:29,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:44:30,508 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 22:44:30,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:44:31,321 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 22:44:31,321 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 51 treesize of output 43 [2023-11-29 22:44:32,006 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 22:44:32,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632624866] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:44:32,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:44:32,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 22, 20] total 70 [2023-11-29 22:44:32,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906174579] [2023-11-29 22:44:32,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:44:32,007 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-11-29 22:44:32,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:44:32,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-11-29 22:44:32,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=4481, Unknown=0, NotChecked=0, Total=4830 [2023-11-29 22:44:32,012 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 150 [2023-11-29 22:44:32,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 865 places, 3934 transitions, 111150 flow. Second operand has 70 states, 70 states have (on average 51.48571428571429) internal successors, (3604), 70 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states 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 22:44:32,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:44:32,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 150 [2023-11-29 22:44:32,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:44:58,425 INFO L124 PetriNetUnfolderBase]: 11661/25522 cut-off events. [2023-11-29 22:44:58,426 INFO L125 PetriNetUnfolderBase]: For 429386/433237 co-relation queries the response was YES. [2023-11-29 22:44:58,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314477 conditions, 25522 events. 11661/25522 cut-off events. For 429386/433237 co-relation queries the response was YES. Maximal size of possible extension queue 1005. Compared 258825 event pairs, 523 based on Foata normal form. 158/24262 useless extension candidates. Maximal degree in co-relation 174556. Up to 15636 conditions per place. [2023-11-29 22:44:58,675 INFO L140 encePairwiseOnDemand]: 105/150 looper letters, 2329 selfloop transitions, 724 changer transitions 1564/4656 dead transitions. [2023-11-29 22:44:58,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 964 places, 4656 transitions, 139021 flow [2023-11-29 22:44:58,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-11-29 22:44:58,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2023-11-29 22:44:58,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 5328 transitions. [2023-11-29 22:44:58,682 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.3552 [2023-11-29 22:44:58,682 INFO L72 ComplementDD]: Start complementDD. Operand 100 states and 5328 transitions. [2023-11-29 22:44:58,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 100 states and 5328 transitions. [2023-11-29 22:44:58,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:44:58,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 100 states and 5328 transitions. [2023-11-29 22:44:58,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 101 states, 100 states have (on average 53.28) internal successors, (5328), 100 states have internal predecessors, (5328), 0 states have call successors, (0), 0 states 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 22:44:58,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 101 states, 101 states have (on average 150.0) internal successors, (15150), 101 states have internal predecessors, (15150), 0 states have call successors, (0), 0 states 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 22:44:58,701 INFO L81 ComplementDD]: Finished complementDD. Result has 101 states, 101 states have (on average 150.0) internal successors, (15150), 101 states have internal predecessors, (15150), 0 states have call successors, (0), 0 states 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 22:44:58,701 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 829 predicate places. [2023-11-29 22:44:58,701 INFO L500 AbstractCegarLoop]: Abstraction has has 964 places, 4656 transitions, 139021 flow [2023-11-29 22:44:58,702 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 51.48571428571429) internal successors, (3604), 70 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states 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 22:44:58,702 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:44:58,702 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:44:58,708 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 22:44:58,908 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:44:58,909 INFO L425 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:44:58,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:44:58,909 INFO L85 PathProgramCache]: Analyzing trace with hash -39441195, now seen corresponding path program 4 times [2023-11-29 22:44:58,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:44:58,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326715025] [2023-11-29 22:44:58,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:44:58,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:44:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:45:00,501 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:45:00,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:45:00,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326715025] [2023-11-29 22:45:00,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326715025] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:45:00,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612959361] [2023-11-29 22:45:00,502 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 22:45:00,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:45:00,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:45:00,503 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 22:45:00,504 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 22:45:00,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 22:45:00,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:45:00,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-29 22:45:00,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:45:02,061 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 22:45:02,061 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 10 [2023-11-29 22:45:02,382 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:45:02,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:45:03,546 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 22:45:03,547 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 40 treesize of output 32 [2023-11-29 22:45:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:45:06,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612959361] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:45:06,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:45:06,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 31, 31] total 89 [2023-11-29 22:45:06,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157235186] [2023-11-29 22:45:06,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:45:06,509 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2023-11-29 22:45:06,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:45:06,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2023-11-29 22:45:06,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=568, Invalid=7264, Unknown=0, NotChecked=0, Total=7832 [2023-11-29 22:45:06,513 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 150 [2023-11-29 22:45:06,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 964 places, 4656 transitions, 139021 flow. Second operand has 89 states, 89 states have (on average 50.842696629213485) internal successors, (4525), 89 states have internal predecessors, (4525), 0 states have call successors, (0), 0 states 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 22:45:06,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:45:06,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 150 [2023-11-29 22:45:06,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:45:20,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 22:45:32,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 22:46:04,384 INFO L124 PetriNetUnfolderBase]: 12825/27882 cut-off events. [2023-11-29 22:46:04,384 INFO L125 PetriNetUnfolderBase]: For 518378/523108 co-relation queries the response was YES. [2023-11-29 22:46:04,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369079 conditions, 27882 events. 12825/27882 cut-off events. For 518378/523108 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 286061 event pairs, 580 based on Foata normal form. 217/26601 useless extension candidates. Maximal degree in co-relation 212918. Up to 17198 conditions per place. [2023-11-29 22:46:04,697 INFO L140 encePairwiseOnDemand]: 102/150 looper letters, 2344 selfloop transitions, 1224 changer transitions 1716/5323 dead transitions. [2023-11-29 22:46:04,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1085 places, 5323 transitions, 168682 flow [2023-11-29 22:46:04,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2023-11-29 22:46:04,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2023-11-29 22:46:04,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 6540 transitions. [2023-11-29 22:46:04,703 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.35737704918032787 [2023-11-29 22:46:04,703 INFO L72 ComplementDD]: Start complementDD. Operand 122 states and 6540 transitions. [2023-11-29 22:46:04,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 6540 transitions. [2023-11-29 22:46:04,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:46:04,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 122 states and 6540 transitions. [2023-11-29 22:46:04,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 123 states, 122 states have (on average 53.60655737704918) internal successors, (6540), 122 states have internal predecessors, (6540), 0 states have call successors, (0), 0 states 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 22:46:04,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 123 states, 123 states have (on average 150.0) internal successors, (18450), 123 states have internal predecessors, (18450), 0 states have call successors, (0), 0 states 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 22:46:04,726 INFO L81 ComplementDD]: Finished complementDD. Result has 123 states, 123 states have (on average 150.0) internal successors, (18450), 123 states have internal predecessors, (18450), 0 states have call successors, (0), 0 states 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 22:46:04,726 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 950 predicate places. [2023-11-29 22:46:04,726 INFO L500 AbstractCegarLoop]: Abstraction has has 1085 places, 5323 transitions, 168682 flow [2023-11-29 22:46:04,727 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 50.842696629213485) internal successors, (4525), 89 states have internal predecessors, (4525), 0 states have call successors, (0), 0 states 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 22:46:04,727 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:46:04,727 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:46:04,737 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 22:46:04,932 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,SelfDestructingSolverStorable21 [2023-11-29 22:46:04,932 INFO L425 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:46:04,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:46:04,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1212139099, now seen corresponding path program 5 times [2023-11-29 22:46:04,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:46:04,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014916363] [2023-11-29 22:46:04,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:46:04,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:46:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:46:06,549 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:46:06,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:46:06,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014916363] [2023-11-29 22:46:06,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014916363] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:46:06,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858700391] [2023-11-29 22:46:06,549 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 22:46:06,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:46:06,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:46:06,550 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 22:46:06,552 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 22:46:06,665 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 22:46:06,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:46:06,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-29 22:46:06,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:46:08,383 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:46:08,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:46:09,571 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 22:46:09,572 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 59 treesize of output 43 [2023-11-29 22:46:11,630 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:46:11,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858700391] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:46:11,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:46:11,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 32, 32] total 91 [2023-11-29 22:46:11,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109109867] [2023-11-29 22:46:11,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:46:11,631 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2023-11-29 22:46:11,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:46:11,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2023-11-29 22:46:11,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=7558, Unknown=0, NotChecked=0, Total=8190 [2023-11-29 22:46:11,636 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 150 [2023-11-29 22:46:11,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1085 places, 5323 transitions, 168682 flow. Second operand has 91 states, 91 states have (on average 50.76923076923077) internal successors, (4620), 91 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states 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 22:46:11,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:46:11,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 150 [2023-11-29 22:46:11,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:46:21,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 22:46:31,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:46:46,902 WARN L293 SmtUtils]: Spent 11.89s on a formula simplification. DAG size of input: 73 DAG size of output: 59 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 22:46:51,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:46:56,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:47:37,288 INFO L124 PetriNetUnfolderBase]: 13413/29635 cut-off events. [2023-11-29 22:47:37,288 INFO L125 PetriNetUnfolderBase]: For 600394/606013 co-relation queries the response was YES. [2023-11-29 22:47:37,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414251 conditions, 29635 events. 13413/29635 cut-off events. For 600394/606013 co-relation queries the response was YES. Maximal size of possible extension queue 1218. Compared 311189 event pairs, 418 based on Foata normal form. 323/28402 useless extension candidates. Maximal degree in co-relation 236008. Up to 18064 conditions per place. [2023-11-29 22:47:37,645 INFO L140 encePairwiseOnDemand]: 102/150 looper letters, 2634 selfloop transitions, 1331 changer transitions 1962/5966 dead transitions. [2023-11-29 22:47:37,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1241 places, 5966 transitions, 199908 flow [2023-11-29 22:47:37,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2023-11-29 22:47:37,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2023-11-29 22:47:37,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 8400 transitions. [2023-11-29 22:47:37,654 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.35668789808917195 [2023-11-29 22:47:37,654 INFO L72 ComplementDD]: Start complementDD. Operand 157 states and 8400 transitions. [2023-11-29 22:47:37,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 157 states and 8400 transitions. [2023-11-29 22:47:37,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:47:37,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 157 states and 8400 transitions. [2023-11-29 22:47:37,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 158 states, 157 states have (on average 53.503184713375795) internal successors, (8400), 157 states have internal predecessors, (8400), 0 states have call successors, (0), 0 states 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 22:47:37,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 158 states, 158 states have (on average 150.0) internal successors, (23700), 158 states have internal predecessors, (23700), 0 states have call successors, (0), 0 states 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 22:47:37,686 INFO L81 ComplementDD]: Finished complementDD. Result has 158 states, 158 states have (on average 150.0) internal successors, (23700), 158 states have internal predecessors, (23700), 0 states have call successors, (0), 0 states 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 22:47:37,686 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 1106 predicate places. [2023-11-29 22:47:37,686 INFO L500 AbstractCegarLoop]: Abstraction has has 1241 places, 5966 transitions, 199908 flow [2023-11-29 22:47:37,687 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 50.76923076923077) internal successors, (4620), 91 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states 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 22:47:37,687 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:47:37,687 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:47:37,695 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 22:47:37,892 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:47:37,893 INFO L425 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:47:37,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:47:37,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1403456653, now seen corresponding path program 6 times [2023-11-29 22:47:37,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:47:37,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222533269] [2023-11-29 22:47:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:47:37,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:47:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:47:39,656 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:47:39,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:47:39,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222533269] [2023-11-29 22:47:39,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222533269] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:47:39,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458112430] [2023-11-29 22:47:39,657 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 22:47:39,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:47:39,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:47:39,658 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 22:47:39,659 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 22:47:39,870 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 22:47:39,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:47:39,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-29 22:47:39,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:47:41,141 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 22:47:41,743 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:47:41,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:47:43,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 22:47:43,257 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 40 treesize of output 32 [2023-11-29 22:47:45,422 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:47:45,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458112430] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:47:45,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:47:45,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 32, 32] total 91 [2023-11-29 22:47:45,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124421397] [2023-11-29 22:47:45,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:47:45,423 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2023-11-29 22:47:45,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:47:45,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2023-11-29 22:47:45,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=737, Invalid=7453, Unknown=0, NotChecked=0, Total=8190 [2023-11-29 22:47:45,429 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 150 [2023-11-29 22:47:45,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1241 places, 5966 transitions, 199908 flow. Second operand has 91 states, 91 states have (on average 50.79120879120879) internal successors, (4622), 91 states have internal predecessors, (4622), 0 states have call successors, (0), 0 states 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 22:47:45,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:47:45,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 150 [2023-11-29 22:47:45,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:48:01,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:48:14,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:48:31,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:48:33,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:48:39,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:48:49,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:49:00,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:49:02,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:49:03,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:49:05,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:49:07,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:49:09,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:49:11,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:49:13,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:49:15,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:49:17,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:49:20,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:49:23,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:49:25,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:49:27,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:49:36,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:49:42,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:49:45,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:49:47,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:49:49,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:49:51,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:49:53,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:50:05,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:50:28,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:50:32,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:50:46,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:50:56,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:50:59,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:51:11,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:51:16,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:51:32,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 22:52:03,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 22:52:20,110 INFO L124 PetriNetUnfolderBase]: 16715/38420 cut-off events. [2023-11-29 22:52:20,110 INFO L125 PetriNetUnfolderBase]: For 825762/833516 co-relation queries the response was YES. [2023-11-29 22:52:20,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558737 conditions, 38420 events. 16715/38420 cut-off events. For 825762/833516 co-relation queries the response was YES. Maximal size of possible extension queue 1588. Compared 427389 event pairs, 518 based on Foata normal form. 407/36492 useless extension candidates. Maximal degree in co-relation 337053. Up to 23077 conditions per place. [2023-11-29 22:52:20,721 INFO L140 encePairwiseOnDemand]: 100/150 looper letters, 3905 selfloop transitions, 1675 changer transitions 3564/9183 dead transitions. [2023-11-29 22:52:20,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1554 places, 9183 transitions, 319618 flow [2023-11-29 22:52:20,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 314 states. [2023-11-29 22:52:20,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2023-11-29 22:52:20,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 16871 transitions. [2023-11-29 22:52:20,730 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.3581953290870488 [2023-11-29 22:52:20,730 INFO L72 ComplementDD]: Start complementDD. Operand 314 states and 16871 transitions. [2023-11-29 22:52:20,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 314 states and 16871 transitions. [2023-11-29 22:52:20,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:52:20,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 314 states and 16871 transitions. [2023-11-29 22:52:20,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 315 states, 314 states have (on average 53.72929936305732) internal successors, (16871), 314 states have internal predecessors, (16871), 0 states have call successors, (0), 0 states 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 22:52:20,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 315 states, 315 states have (on average 150.0) internal successors, (47250), 315 states have internal predecessors, (47250), 0 states have call successors, (0), 0 states 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 22:52:20,783 INFO L81 ComplementDD]: Finished complementDD. Result has 315 states, 315 states have (on average 150.0) internal successors, (47250), 315 states have internal predecessors, (47250), 0 states have call successors, (0), 0 states 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 22:52:20,783 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 1419 predicate places. [2023-11-29 22:52:20,783 INFO L500 AbstractCegarLoop]: Abstraction has has 1554 places, 9183 transitions, 319618 flow [2023-11-29 22:52:20,784 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 50.79120879120879) internal successors, (4622), 91 states have internal predecessors, (4622), 0 states have call successors, (0), 0 states 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 22:52:20,784 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:52:20,784 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:52:20,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 22:52:20,989 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,SelfDestructingSolverStorable23 [2023-11-29 22:52:20,989 INFO L425 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:52:20,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:52:20,990 INFO L85 PathProgramCache]: Analyzing trace with hash -118608955, now seen corresponding path program 7 times [2023-11-29 22:52:20,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:52:20,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568277654] [2023-11-29 22:52:20,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:52:20,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:52:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:52:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:52:22,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:52:22,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568277654] [2023-11-29 22:52:22,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568277654] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:52:22,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995177448] [2023-11-29 22:52:22,502 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 22:52:22,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:52:22,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:52:22,503 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 22:52:22,504 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 22:52:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:52:22,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-29 22:52:22,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:52:24,038 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 22:52:24,039 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 10 [2023-11-29 22:52:24,424 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:52:24,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:52:25,662 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 22:52:25,663 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 32 treesize of output 24 [2023-11-29 22:52:27,380 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:52:27,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995177448] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:52:27,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:52:27,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 31, 30] total 88 [2023-11-29 22:52:27,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328579098] [2023-11-29 22:52:27,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:52:27,381 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2023-11-29 22:52:27,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:52:27,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2023-11-29 22:52:27,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=588, Invalid=7068, Unknown=0, NotChecked=0, Total=7656 [2023-11-29 22:52:27,385 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 150 [2023-11-29 22:52:27,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1554 places, 9183 transitions, 319618 flow. Second operand has 88 states, 88 states have (on average 50.875) internal successors, (4477), 88 states have internal predecessors, (4477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:52:27,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:52:27,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 150 [2023-11-29 22:52:27,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:54:14,735 INFO L124 PetriNetUnfolderBase]: 16887/38956 cut-off events. [2023-11-29 22:54:14,735 INFO L125 PetriNetUnfolderBase]: For 885862/893785 co-relation queries the response was YES. [2023-11-29 22:54:14,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597911 conditions, 38956 events. 16887/38956 cut-off events. For 885862/893785 co-relation queries the response was YES. Maximal size of possible extension queue 1627. Compared 436191 event pairs, 470 based on Foata normal form. 304/36906 useless extension candidates. Maximal degree in co-relation 359977. Up to 23361 conditions per place. [2023-11-29 22:54:15,221 INFO L140 encePairwiseOnDemand]: 102/150 looper letters, 3872 selfloop transitions, 1812 changer transitions 3685/9408 dead transitions. [2023-11-29 22:54:15,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1680 places, 9408 transitions, 345805 flow [2023-11-29 22:54:15,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-11-29 22:54:15,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2023-11-29 22:54:15,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 6776 transitions. [2023-11-29 22:54:15,226 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.3556955380577428 [2023-11-29 22:54:15,226 INFO L72 ComplementDD]: Start complementDD. Operand 127 states and 6776 transitions. [2023-11-29 22:54:15,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 127 states and 6776 transitions. [2023-11-29 22:54:15,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:54:15,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 127 states and 6776 transitions. [2023-11-29 22:54:15,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 128 states, 127 states have (on average 53.354330708661415) internal successors, (6776), 127 states have internal predecessors, (6776), 0 states have call successors, (0), 0 states 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 22:54:15,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 128 states, 128 states have (on average 150.0) internal successors, (19200), 128 states have internal predecessors, (19200), 0 states have call successors, (0), 0 states 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 22:54:15,239 INFO L81 ComplementDD]: Finished complementDD. Result has 128 states, 128 states have (on average 150.0) internal successors, (19200), 128 states have internal predecessors, (19200), 0 states have call successors, (0), 0 states 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 22:54:15,239 INFO L307 CegarLoopForPetriNet]: 135 programPoint places, 1545 predicate places. [2023-11-29 22:54:15,239 INFO L500 AbstractCegarLoop]: Abstraction has has 1680 places, 9408 transitions, 345805 flow [2023-11-29 22:54:15,240 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 50.875) internal successors, (4477), 88 states have internal predecessors, (4477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:54:15,240 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:54:15,240 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:54:15,249 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 22:54:15,445 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,SelfDestructingSolverStorable24 [2023-11-29 22:54:15,445 INFO L425 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 22:54:15,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:54:15,446 INFO L85 PathProgramCache]: Analyzing trace with hash -2119388037, now seen corresponding path program 8 times [2023-11-29 22:54:15,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:54:15,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566012391] [2023-11-29 22:54:15,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:54:15,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:54:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:54:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:54:17,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:54:17,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566012391] [2023-11-29 22:54:17,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566012391] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:54:17,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822511349] [2023-11-29 22:54:17,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 22:54:17,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:54:17,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:54:17,202 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 22:54:17,203 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 22:54:17,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 22:54:17,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:54:17,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 22:54:17,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:54:18,469 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 22:54:18,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:54:19,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 22:54:19,355 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 64 treesize of output 56 [2023-11-29 22:54:20,313 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 22:54:20,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822511349] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:54:20,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:54:20,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 25, 20] total 72 [2023-11-29 22:54:20,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596488978] [2023-11-29 22:54:20,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:54:20,314 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-11-29 22:54:20,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:54:20,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-11-29 22:54:20,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=4741, Unknown=0, NotChecked=0, Total=5112 [2023-11-29 22:54:20,318 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 150 [2023-11-29 22:54:20,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1680 places, 9408 transitions, 345805 flow. Second operand has 72 states, 72 states have (on average 51.416666666666664) internal successors, (3702), 72 states have internal predecessors, (3702), 0 states have call successors, (0), 0 states 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 22:54:20,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:54:20,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 150 [2023-11-29 22:54:20,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:56:13,757 INFO L124 PetriNetUnfolderBase]: 17004/39449 cut-off events. [2023-11-29 22:56:13,757 INFO L125 PetriNetUnfolderBase]: For 969725/979436 co-relation queries the response was YES. [2023-11-29 22:56:14,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 636755 conditions, 39449 events. 17004/39449 cut-off events. For 969725/979436 co-relation queries the response was YES. Maximal size of possible extension queue 1657. Compared 444800 event pairs, 437 based on Foata normal form. 281/37349 useless extension candidates. Maximal degree in co-relation 380709. Up to 23589 conditions per place. Received shutdown request... [2023-11-29 22:56:14,188 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 22:56:14,188 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 22:56:14,417 INFO L140 encePairwiseOnDemand]: 105/150 looper letters, 4625 selfloop transitions, 951 changer transitions 3973/9588 dead transitions. [2023-11-29 22:56:14,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1768 places, 9588 transitions, 371467 flow [2023-11-29 22:56:14,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-11-29 22:56:14,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2023-11-29 22:56:14,420 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-29 22:56:14,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 22:56:14,624 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,SelfDestructingSolverStorable25 [2023-11-29 22:56:14,625 WARN L624 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type AutomatonWithImplicitSelfloops). [2023-11-29 22:56:14,626 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-29 22:56:14,626 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-29 22:56:14,627 INFO L457 BasicCegarLoop]: Path program histogram: [11, 8, 3, 2, 1, 1] [2023-11-29 22:56:14,629 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 22:56:14,629 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 22:56:14,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:56:14 BasicIcfg [2023-11-29 22:56:14,632 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 22:56:14,632 INFO L158 Benchmark]: Toolchain (without parser) took 802241.72ms. Allocated memory was 501.2MB in the beginning and 4.1GB in the end (delta: 3.6GB). Free memory was 448.1MB in the beginning and 2.4GB in the end (delta: -1.9GB). Peak memory consumption was 2.4GB. Max. memory is 16.0GB. [2023-11-29 22:56:14,632 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 348.1MB. Free memory is still 297.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 22:56:14,633 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.41ms. Allocated memory is still 501.2MB. Free memory was 448.1MB in the beginning and 436.1MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-11-29 22:56:14,633 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.35ms. Allocated memory is still 501.2MB. Free memory was 436.1MB in the beginning and 434.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 22:56:14,633 INFO L158 Benchmark]: Boogie Preprocessor took 41.65ms. Allocated memory is still 501.2MB. Free memory was 434.1MB in the beginning and 432.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 22:56:14,633 INFO L158 Benchmark]: RCFGBuilder took 545.22ms. Allocated memory is still 501.2MB. Free memory was 432.4MB in the beginning and 466.5MB in the end (delta: -34.2MB). Peak memory consumption was 30.4MB. Max. memory is 16.0GB. [2023-11-29 22:56:14,633 INFO L158 Benchmark]: TraceAbstraction took 801294.13ms. Allocated memory was 501.2MB in the beginning and 4.1GB in the end (delta: 3.6GB). Free memory was 466.5MB in the beginning and 2.4GB in the end (delta: -1.9GB). Peak memory consumption was 2.4GB. Max. memory is 16.0GB. [2023-11-29 22:56:14,634 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 348.1MB. Free memory is still 297.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 297.41ms. Allocated memory is still 501.2MB. Free memory was 448.1MB in the beginning and 436.1MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 56.35ms. Allocated memory is still 501.2MB. Free memory was 436.1MB in the beginning and 434.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 41.65ms. Allocated memory is still 501.2MB. Free memory was 434.1MB in the beginning and 432.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 545.22ms. Allocated memory is still 501.2MB. Free memory was 432.4MB in the beginning and 466.5MB in the end (delta: -34.2MB). Peak memory consumption was 30.4MB. Max. memory is 16.0GB. * TraceAbstraction took 801294.13ms. Allocated memory was 501.2MB in the beginning and 4.1GB in the end (delta: 3.6GB). Free memory was 466.5MB in the beginning and 2.4GB in the end (delta: -1.9GB). Peak memory consumption was 2.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type AutomatonWithImplicitSelfloops). - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type AutomatonWithImplicitSelfloops). - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type AutomatonWithImplicitSelfloops). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 167 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: 801.2s, OverallIterations: 26, TraceHistogramMax: 2, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 734.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 31 mSolverCounterUnknown, 15072 SdHoareTripleChecker+Valid, 159.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15072 mSDsluCounter, 35503 SdHoareTripleChecker+Invalid, 153.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33844 mSDsCounter, 3000 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60997 IncrementalHoareTripleChecker+Invalid, 64028 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3000 mSolverCounterUnsat, 1659 mSDtfsCounter, 60997 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5013 GetRequests, 2742 SyntacticMatches, 17 SemanticMatches, 2254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169200 ImplicationChecksByTransitivity, 224.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=345805occurred in iteration=25, InterpolantAutomatonStates: 1571, 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: 0.3s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 61.0s InterpolantComputationTime, 4914 NumberOfCodeBlocks, 4898 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 6371 ConstructedInterpolants, 219 QuantifiedInterpolants, 87332 SizeOfPredicates, 288 NumberOfNonLiveVariables, 3619 ConjunctsInSsa, 458 ConjunctsInUnsatCore, 49 InterpolantComputations, 15 PerfectInterpolantSequences, 73/479 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