/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:17:53,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:17:53,212 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-09 15:17:53,235 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:17:53,236 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:17:53,236 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:17:53,237 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:17:53,237 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:17:53,237 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:17:53,240 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:17:53,240 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:17:53,240 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:17:53,241 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:17:53,242 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:17:53,242 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:17:53,242 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:17:53,242 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:17:53,242 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:17:53,242 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:17:53,242 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:17:53,243 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:17:53,243 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:17:53,243 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:17:53,243 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:17:53,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:17:53,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:17:53,244 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:17:53,244 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:17:53,244 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:17:53,245 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:17:53,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:17:53,245 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:17:53,245 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:17:53,246 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:17:53,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:17:53,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:17:53,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:17:53,438 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:17:53,438 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:17:53,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2023-12-09 15:17:54,528 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:17:54,676 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:17:54,677 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2023-12-09 15:17:54,682 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/239b7a126/21742d3f92e4450783a3455a4374836c/FLAG0c1fbcf1c [2023-12-09 15:17:54,692 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/239b7a126/21742d3f92e4450783a3455a4374836c [2023-12-09 15:17:54,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:17:54,695 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:17:54,696 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:17:54,696 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:17:54,699 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:17:54,700 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:17:54" (1/1) ... [2023-12-09 15:17:54,700 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@288bdcf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:54, skipping insertion in model container [2023-12-09 15:17:54,701 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:17:54" (1/1) ... [2023-12-09 15:17:54,716 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:17:54,817 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/parallel-misc-2.wvr.c[2580,2593] [2023-12-09 15:17:54,820 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:17:54,826 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:17:54,839 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/parallel-misc-2.wvr.c[2580,2593] [2023-12-09 15:17:54,840 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:17:54,845 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:17:54,845 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:17:54,850 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:17:54,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:54 WrapperNode [2023-12-09 15:17:54,850 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:17:54,851 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:17:54,851 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:17:54,851 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:17:54,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:54" (1/1) ... [2023-12-09 15:17:54,861 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:54" (1/1) ... [2023-12-09 15:17:54,873 INFO L138 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-12-09 15:17:54,873 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:17:54,874 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:17:54,874 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:17:54,874 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:17:54,880 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:54" (1/1) ... [2023-12-09 15:17:54,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:54" (1/1) ... [2023-12-09 15:17:54,884 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:54" (1/1) ... [2023-12-09 15:17:54,885 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:54" (1/1) ... [2023-12-09 15:17:54,888 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:54" (1/1) ... [2023-12-09 15:17:54,891 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:54" (1/1) ... [2023-12-09 15:17:54,892 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:54" (1/1) ... [2023-12-09 15:17:54,892 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:54" (1/1) ... [2023-12-09 15:17:54,893 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:17:54,894 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:17:54,894 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:17:54,894 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:17:54,895 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:54" (1/1) ... [2023-12-09 15:17:54,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:17:54,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:17:54,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-09 15:17:54,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-09 15:17:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:17:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:17:54,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:17:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:17:54,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:17:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:17:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:17:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:17:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 15:17:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 15:17:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:17:54,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:17:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:17:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:17:54,941 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 15:17:55,001 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:17:55,003 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:17:55,184 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:17:55,216 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:17:55,216 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-09 15:17:55,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:17:55 BoogieIcfgContainer [2023-12-09 15:17:55,217 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:17:55,225 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:17:55,225 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:17:55,227 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:17:55,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:17:54" (1/3) ... [2023-12-09 15:17:55,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff95a29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:17:55, skipping insertion in model container [2023-12-09 15:17:55,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:17:54" (2/3) ... [2023-12-09 15:17:55,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff95a29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:17:55, skipping insertion in model container [2023-12-09 15:17:55,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:17:55" (3/3) ... [2023-12-09 15:17:55,229 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2023-12-09 15:17:55,240 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:17:55,240 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:17:55,240 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:17:55,302 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 15:17:55,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 108 transitions, 230 flow [2023-12-09 15:17:55,367 INFO L124 PetriNetUnfolderBase]: 8/106 cut-off events. [2023-12-09 15:17:55,370 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:17:55,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 106 events. 8/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-12-09 15:17:55,375 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 108 transitions, 230 flow [2023-12-09 15:17:55,378 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 97 transitions, 206 flow [2023-12-09 15:17:55,394 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:17:55,400 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;@39e5e0b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:17:55,400 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 15:17:55,452 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:17:55,452 INFO L124 PetriNetUnfolderBase]: 8/96 cut-off events. [2023-12-09 15:17:55,452 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:17:55,452 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:17:55,453 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:17:55,454 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:17:55,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:17:55,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1195650573, now seen corresponding path program 1 times [2023-12-09 15:17:55,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:17:55,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565334129] [2023-12-09 15:17:55,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:17:55,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:17:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:17:56,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:17:56,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:17:56,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565334129] [2023-12-09 15:17:56,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565334129] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:17:56,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:17:56,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:17:56,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108412821] [2023-12-09 15:17:56,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:17:56,260 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:17:56,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:17:56,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:17:56,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:17:56,283 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 108 [2023-12-09 15:17:56,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 97 transitions, 206 flow. Second operand has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:56,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:17:56,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 108 [2023-12-09 15:17:56,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:17:56,433 INFO L124 PetriNetUnfolderBase]: 25/170 cut-off events. [2023-12-09 15:17:56,433 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-12-09 15:17:56,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 170 events. 25/170 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 356 event pairs, 0 based on Foata normal form. 16/167 useless extension candidates. Maximal degree in co-relation 117. Up to 40 conditions per place. [2023-12-09 15:17:56,436 INFO L140 encePairwiseOnDemand]: 90/108 looper letters, 19 selfloop transitions, 9 changer transitions 7/104 dead transitions. [2023-12-09 15:17:56,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 104 transitions, 299 flow [2023-12-09 15:17:56,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 15:17:56,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 15:17:56,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 754 transitions. [2023-12-09 15:17:56,454 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7757201646090535 [2023-12-09 15:17:56,455 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 754 transitions. [2023-12-09 15:17:56,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 754 transitions. [2023-12-09 15:17:56,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:17:56,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 754 transitions. [2023-12-09 15:17:56,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 83.77777777777777) internal successors, (754), 9 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:56,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 108.0) internal successors, (1080), 10 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:56,466 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 108.0) internal successors, (1080), 10 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:56,471 INFO L308 CegarLoopForPetriNet]: 96 programPoint places, 8 predicate places. [2023-12-09 15:17:56,471 INFO L500 AbstractCegarLoop]: Abstraction has has 104 places, 104 transitions, 299 flow [2023-12-09 15:17:56,472 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:56,472 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:17:56,472 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:17:56,472 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:17:56,473 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:17:56,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:17:56,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1312965913, now seen corresponding path program 1 times [2023-12-09 15:17:56,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:17:56,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599109729] [2023-12-09 15:17:56,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:17:56,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:17:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:17:56,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:17:56,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:17:56,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599109729] [2023-12-09 15:17:56,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599109729] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:17:56,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:17:56,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:17:56,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274567476] [2023-12-09 15:17:56,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:17:56,686 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:17:56,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:17:56,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:17:56,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:17:56,689 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 108 [2023-12-09 15:17:56,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 104 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:56,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:17:56,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 108 [2023-12-09 15:17:56,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:17:56,884 INFO L124 PetriNetUnfolderBase]: 106/366 cut-off events. [2023-12-09 15:17:56,884 INFO L125 PetriNetUnfolderBase]: For 150/154 co-relation queries the response was YES. [2023-12-09 15:17:56,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 366 events. 106/366 cut-off events. For 150/154 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1634 event pairs, 12 based on Foata normal form. 1/311 useless extension candidates. Maximal degree in co-relation 467. Up to 82 conditions per place. [2023-12-09 15:17:56,887 INFO L140 encePairwiseOnDemand]: 95/108 looper letters, 47 selfloop transitions, 14 changer transitions 9/131 dead transitions. [2023-12-09 15:17:56,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 131 transitions, 521 flow [2023-12-09 15:17:56,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:17:56,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:17:56,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 619 transitions. [2023-12-09 15:17:56,889 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7164351851851852 [2023-12-09 15:17:56,889 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 619 transitions. [2023-12-09 15:17:56,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 619 transitions. [2023-12-09 15:17:56,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:17:56,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 619 transitions. [2023-12-09 15:17:56,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 77.375) internal successors, (619), 8 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:56,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:56,892 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:56,893 INFO L308 CegarLoopForPetriNet]: 96 programPoint places, 15 predicate places. [2023-12-09 15:17:56,893 INFO L500 AbstractCegarLoop]: Abstraction has has 111 places, 131 transitions, 521 flow [2023-12-09 15:17:56,893 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:56,893 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:17:56,894 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:17:56,894 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:17:56,894 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:17:56,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:17:56,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1677737137, now seen corresponding path program 1 times [2023-12-09 15:17:56,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:17:56,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162348193] [2023-12-09 15:17:56,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:17:56,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:17:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:17:57,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:17:57,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:17:57,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162348193] [2023-12-09 15:17:57,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162348193] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:17:57,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:17:57,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:17:57,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754919149] [2023-12-09 15:17:57,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:17:57,054 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:17:57,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:17:57,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:17:57,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:17:57,056 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 108 [2023-12-09 15:17:57,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 131 transitions, 521 flow. Second operand has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:57,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:17:57,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 108 [2023-12-09 15:17:57,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:17:57,192 INFO L124 PetriNetUnfolderBase]: 111/417 cut-off events. [2023-12-09 15:17:57,192 INFO L125 PetriNetUnfolderBase]: For 344/384 co-relation queries the response was YES. [2023-12-09 15:17:57,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 417 events. 111/417 cut-off events. For 344/384 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2012 event pairs, 6 based on Foata normal form. 9/373 useless extension candidates. Maximal degree in co-relation 642. Up to 93 conditions per place. [2023-12-09 15:17:57,197 INFO L140 encePairwiseOnDemand]: 96/108 looper letters, 76 selfloop transitions, 17 changer transitions 11/165 dead transitions. [2023-12-09 15:17:57,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 165 transitions, 923 flow [2023-12-09 15:17:57,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:17:57,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:17:57,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 625 transitions. [2023-12-09 15:17:57,198 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7233796296296297 [2023-12-09 15:17:57,199 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 625 transitions. [2023-12-09 15:17:57,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 625 transitions. [2023-12-09 15:17:57,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:17:57,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 625 transitions. [2023-12-09 15:17:57,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 78.125) internal successors, (625), 8 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:57,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:57,202 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:57,203 INFO L308 CegarLoopForPetriNet]: 96 programPoint places, 22 predicate places. [2023-12-09 15:17:57,203 INFO L500 AbstractCegarLoop]: Abstraction has has 118 places, 165 transitions, 923 flow [2023-12-09 15:17:57,203 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:57,203 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:17:57,204 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:17:57,204 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:17:57,204 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:17:57,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:17:57,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1363993443, now seen corresponding path program 2 times [2023-12-09 15:17:57,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:17:57,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3893640] [2023-12-09 15:17:57,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:17:57,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:17:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:17:57,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:17:57,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:17:57,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3893640] [2023-12-09 15:17:57,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3893640] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:17:57,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:17:57,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:17:57,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632954839] [2023-12-09 15:17:57,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:17:57,357 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:17:57,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:17:57,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:17:57,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:17:57,358 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 108 [2023-12-09 15:17:57,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 165 transitions, 923 flow. Second operand has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:57,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:17:57,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 108 [2023-12-09 15:17:57,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:17:57,469 INFO L124 PetriNetUnfolderBase]: 105/400 cut-off events. [2023-12-09 15:17:57,469 INFO L125 PetriNetUnfolderBase]: For 595/651 co-relation queries the response was YES. [2023-12-09 15:17:57,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1198 conditions, 400 events. 105/400 cut-off events. For 595/651 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1884 event pairs, 6 based on Foata normal form. 6/361 useless extension candidates. Maximal degree in co-relation 730. Up to 96 conditions per place. [2023-12-09 15:17:57,472 INFO L140 encePairwiseOnDemand]: 96/108 looper letters, 80 selfloop transitions, 22 changer transitions 11/174 dead transitions. [2023-12-09 15:17:57,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 174 transitions, 1213 flow [2023-12-09 15:17:57,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:17:57,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:17:57,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 617 transitions. [2023-12-09 15:17:57,474 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7141203703703703 [2023-12-09 15:17:57,474 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 617 transitions. [2023-12-09 15:17:57,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 617 transitions. [2023-12-09 15:17:57,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:17:57,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 617 transitions. [2023-12-09 15:17:57,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 77.125) internal successors, (617), 8 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:57,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:57,476 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:57,477 INFO L308 CegarLoopForPetriNet]: 96 programPoint places, 29 predicate places. [2023-12-09 15:17:57,477 INFO L500 AbstractCegarLoop]: Abstraction has has 125 places, 174 transitions, 1213 flow [2023-12-09 15:17:57,477 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:57,478 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:17:57,478 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:17:57,478 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 15:17:57,478 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:17:57,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:17:57,478 INFO L85 PathProgramCache]: Analyzing trace with hash -572931995, now seen corresponding path program 2 times [2023-12-09 15:17:57,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:17:57,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403530408] [2023-12-09 15:17:57,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:17:57,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:17:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:17:57,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:17:57,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:17:57,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403530408] [2023-12-09 15:17:57,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403530408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:17:57,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:17:57,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:17:57,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009780718] [2023-12-09 15:17:57,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:17:57,602 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:17:57,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:17:57,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:17:57,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:17:57,603 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 108 [2023-12-09 15:17:57,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 174 transitions, 1213 flow. Second operand has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:57,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:17:57,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 108 [2023-12-09 15:17:57,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:17:57,731 INFO L124 PetriNetUnfolderBase]: 93/360 cut-off events. [2023-12-09 15:17:57,731 INFO L125 PetriNetUnfolderBase]: For 831/927 co-relation queries the response was YES. [2023-12-09 15:17:57,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 360 events. 93/360 cut-off events. For 831/927 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1541 event pairs, 6 based on Foata normal form. 10/331 useless extension candidates. Maximal degree in co-relation 851. Up to 98 conditions per place. [2023-12-09 15:17:57,734 INFO L140 encePairwiseOnDemand]: 94/108 looper letters, 75 selfloop transitions, 16 changer transitions 13/165 dead transitions. [2023-12-09 15:17:57,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 165 transitions, 1318 flow [2023-12-09 15:17:57,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:17:57,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:17:57,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 618 transitions. [2023-12-09 15:17:57,735 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7152777777777778 [2023-12-09 15:17:57,735 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 618 transitions. [2023-12-09 15:17:57,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 618 transitions. [2023-12-09 15:17:57,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:17:57,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 618 transitions. [2023-12-09 15:17:57,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 77.25) internal successors, (618), 8 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:57,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:57,738 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:57,739 INFO L308 CegarLoopForPetriNet]: 96 programPoint places, 36 predicate places. [2023-12-09 15:17:57,739 INFO L500 AbstractCegarLoop]: Abstraction has has 132 places, 165 transitions, 1318 flow [2023-12-09 15:17:57,739 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:57,739 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:17:57,739 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:17:57,739 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 15:17:57,740 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:17:57,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:17:57,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1358854719, now seen corresponding path program 1 times [2023-12-09 15:17:57,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:17:57,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076568857] [2023-12-09 15:17:57,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:17:57,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:17:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:17:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:17:57,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:17:57,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076568857] [2023-12-09 15:17:57,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076568857] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:17:57,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779012940] [2023-12-09 15:17:57,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:17:57,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:17:57,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:17:57,994 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:17:58,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 15:17:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:17:58,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-09 15:17:58,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:17:58,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:17:58,375 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:17:58,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:17:58,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779012940] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:17:58,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:17:58,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-12-09 15:17:58,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648258466] [2023-12-09 15:17:58,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:17:58,601 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-09 15:17:58,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:17:58,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-09 15:17:58,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-12-09 15:17:58,604 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 108 [2023-12-09 15:17:58,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 165 transitions, 1318 flow. Second operand has 18 states, 18 states have (on average 71.44444444444444) internal successors, (1286), 18 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:58,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:17:58,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 108 [2023-12-09 15:17:58,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:17:59,086 INFO L124 PetriNetUnfolderBase]: 175/551 cut-off events. [2023-12-09 15:17:59,086 INFO L125 PetriNetUnfolderBase]: For 1776/1882 co-relation queries the response was YES. [2023-12-09 15:17:59,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2261 conditions, 551 events. 175/551 cut-off events. For 1776/1882 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2707 event pairs, 11 based on Foata normal form. 10/504 useless extension candidates. Maximal degree in co-relation 1600. Up to 209 conditions per place. [2023-12-09 15:17:59,091 INFO L140 encePairwiseOnDemand]: 89/108 looper letters, 122 selfloop transitions, 40 changer transitions 13/235 dead transitions. [2023-12-09 15:17:59,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 235 transitions, 2426 flow [2023-12-09 15:17:59,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-09 15:17:59,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-12-09 15:17:59,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1473 transitions. [2023-12-09 15:17:59,094 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6819444444444445 [2023-12-09 15:17:59,094 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1473 transitions. [2023-12-09 15:17:59,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1473 transitions. [2023-12-09 15:17:59,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:17:59,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1473 transitions. [2023-12-09 15:17:59,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 73.65) internal successors, (1473), 20 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:59,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 108.0) internal successors, (2268), 21 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:59,100 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 108.0) internal successors, (2268), 21 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:59,100 INFO L308 CegarLoopForPetriNet]: 96 programPoint places, 55 predicate places. [2023-12-09 15:17:59,101 INFO L500 AbstractCegarLoop]: Abstraction has has 151 places, 235 transitions, 2426 flow [2023-12-09 15:17:59,101 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 71.44444444444444) internal successors, (1286), 18 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:59,101 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:17:59,101 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:17:59,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-09 15:17:59,307 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-09 15:17:59,307 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:17:59,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:17:59,307 INFO L85 PathProgramCache]: Analyzing trace with hash -42738173, now seen corresponding path program 2 times [2023-12-09 15:17:59,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:17:59,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429764814] [2023-12-09 15:17:59,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:17:59,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:17:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:17:59,478 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:17:59,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:17:59,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429764814] [2023-12-09 15:17:59,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429764814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:17:59,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:17:59,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 15:17:59,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899467054] [2023-12-09 15:17:59,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:17:59,480 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-09 15:17:59,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:17:59,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-09 15:17:59,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-09 15:17:59,482 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 108 [2023-12-09 15:17:59,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 235 transitions, 2426 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:59,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:17:59,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 108 [2023-12-09 15:17:59,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:17:59,664 INFO L124 PetriNetUnfolderBase]: 432/1168 cut-off events. [2023-12-09 15:17:59,665 INFO L125 PetriNetUnfolderBase]: For 6837/7007 co-relation queries the response was YES. [2023-12-09 15:17:59,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5701 conditions, 1168 events. 432/1168 cut-off events. For 6837/7007 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7787 event pairs, 27 based on Foata normal form. 0/1045 useless extension candidates. Maximal degree in co-relation 4607. Up to 549 conditions per place. [2023-12-09 15:17:59,674 INFO L140 encePairwiseOnDemand]: 103/108 looper letters, 121 selfloop transitions, 5 changer transitions 13/307 dead transitions. [2023-12-09 15:17:59,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 307 transitions, 3722 flow [2023-12-09 15:17:59,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-09 15:17:59,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-12-09 15:17:59,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 393 transitions. [2023-12-09 15:17:59,676 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9097222222222222 [2023-12-09 15:17:59,676 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 393 transitions. [2023-12-09 15:17:59,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 393 transitions. [2023-12-09 15:17:59,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:17:59,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 393 transitions. [2023-12-09 15:17:59,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:59,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:59,678 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:59,679 INFO L308 CegarLoopForPetriNet]: 96 programPoint places, 58 predicate places. [2023-12-09 15:17:59,679 INFO L500 AbstractCegarLoop]: Abstraction has has 154 places, 307 transitions, 3722 flow [2023-12-09 15:17:59,679 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:17:59,679 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:17:59,680 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:17:59,680 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-09 15:17:59,680 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:17:59,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:17:59,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1112948675, now seen corresponding path program 1 times [2023-12-09 15:17:59,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:17:59,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291754159] [2023-12-09 15:17:59,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:17:59,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:17:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:18:00,093 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:18:00,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:18:00,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291754159] [2023-12-09 15:18:00,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291754159] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:18:00,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434114007] [2023-12-09 15:18:00,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:18:00,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:18:00,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:18:00,104 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:18:00,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 15:18:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:18:00,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-09 15:18:00,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:18:00,444 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-09 15:18:00,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:18:00,661 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-09 15:18:00,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434114007] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:18:00,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:18:00,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 22 [2023-12-09 15:18:00,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116195870] [2023-12-09 15:18:00,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:18:00,662 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-09 15:18:00,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:18:00,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-09 15:18:00,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2023-12-09 15:18:00,664 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 108 [2023-12-09 15:18:00,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 307 transitions, 3722 flow. Second operand has 22 states, 22 states have (on average 70.13636363636364) internal successors, (1543), 22 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:00,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:18:00,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 108 [2023-12-09 15:18:00,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:18:01,550 INFO L124 PetriNetUnfolderBase]: 842/2085 cut-off events. [2023-12-09 15:18:01,550 INFO L125 PetriNetUnfolderBase]: For 13850/14200 co-relation queries the response was YES. [2023-12-09 15:18:01,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11431 conditions, 2085 events. 842/2085 cut-off events. For 13850/14200 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 14649 event pairs, 52 based on Foata normal form. 18/1919 useless extension candidates. Maximal degree in co-relation 10700. Up to 1036 conditions per place. [2023-12-09 15:18:01,570 INFO L140 encePairwiseOnDemand]: 87/108 looper letters, 351 selfloop transitions, 61 changer transitions 13/488 dead transitions. [2023-12-09 15:18:01,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 488 transitions, 6992 flow [2023-12-09 15:18:01,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-09 15:18:01,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-12-09 15:18:01,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1514 transitions. [2023-12-09 15:18:01,574 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6675485008818343 [2023-12-09 15:18:01,574 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1514 transitions. [2023-12-09 15:18:01,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1514 transitions. [2023-12-09 15:18:01,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:18:01,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1514 transitions. [2023-12-09 15:18:01,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 72.0952380952381) internal successors, (1514), 21 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:01,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 108.0) internal successors, (2376), 22 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:01,581 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 108.0) internal successors, (2376), 22 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:01,583 INFO L308 CegarLoopForPetriNet]: 96 programPoint places, 78 predicate places. [2023-12-09 15:18:01,583 INFO L500 AbstractCegarLoop]: Abstraction has has 174 places, 488 transitions, 6992 flow [2023-12-09 15:18:01,584 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 70.13636363636364) internal successors, (1543), 22 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:01,584 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:18:01,584 INFO L233 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] [2023-12-09 15:18:01,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-09 15:18:01,792 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,SelfDestructingSolverStorable7 [2023-12-09 15:18:01,793 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:18:01,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:18:01,793 INFO L85 PathProgramCache]: Analyzing trace with hash -347487183, now seen corresponding path program 2 times [2023-12-09 15:18:01,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:18:01,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835004429] [2023-12-09 15:18:01,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:18:01,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:18:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:18:01,901 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-09 15:18:01,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:18:01,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835004429] [2023-12-09 15:18:01,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835004429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:18:01,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:18:01,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 15:18:01,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910436079] [2023-12-09 15:18:01,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:18:01,905 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-09 15:18:01,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:18:01,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-09 15:18:01,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-09 15:18:01,907 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 108 [2023-12-09 15:18:01,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 488 transitions, 6992 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:01,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:18:01,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 108 [2023-12-09 15:18:01,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:18:02,574 INFO L124 PetriNetUnfolderBase]: 1788/4778 cut-off events. [2023-12-09 15:18:02,574 INFO L125 PetriNetUnfolderBase]: For 45225/46751 co-relation queries the response was YES. [2023-12-09 15:18:02,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26347 conditions, 4778 events. 1788/4778 cut-off events. For 45225/46751 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 44631 event pairs, 161 based on Foata normal form. 287/4628 useless extension candidates. Maximal degree in co-relation 24568. Up to 2358 conditions per place. [2023-12-09 15:18:02,706 INFO L140 encePairwiseOnDemand]: 103/108 looper letters, 351 selfloop transitions, 5 changer transitions 13/638 dead transitions. [2023-12-09 15:18:02,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 638 transitions, 10640 flow [2023-12-09 15:18:02,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-09 15:18:02,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-12-09 15:18:02,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 392 transitions. [2023-12-09 15:18:02,708 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9074074074074074 [2023-12-09 15:18:02,708 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 392 transitions. [2023-12-09 15:18:02,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 392 transitions. [2023-12-09 15:18:02,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:18:02,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 392 transitions. [2023-12-09 15:18:02,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:02,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:02,710 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:02,710 INFO L308 CegarLoopForPetriNet]: 96 programPoint places, 81 predicate places. [2023-12-09 15:18:02,710 INFO L500 AbstractCegarLoop]: Abstraction has has 177 places, 638 transitions, 10640 flow [2023-12-09 15:18:02,711 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:02,711 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:18:02,711 INFO L233 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] [2023-12-09 15:18:02,711 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-09 15:18:02,711 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:18:02,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:18:02,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1642448049, now seen corresponding path program 1 times [2023-12-09 15:18:02,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:18:02,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306371305] [2023-12-09 15:18:02,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:18:02,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:18:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:18:02,864 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-09 15:18:02,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:18:02,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306371305] [2023-12-09 15:18:02,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306371305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:18:02,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:18:02,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 15:18:02,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141065204] [2023-12-09 15:18:02,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:18:02,865 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-09 15:18:02,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:18:02,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-09 15:18:02,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-09 15:18:02,866 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 108 [2023-12-09 15:18:02,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 638 transitions, 10640 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:02,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:18:02,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 108 [2023-12-09 15:18:02,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:18:03,355 INFO L124 PetriNetUnfolderBase]: 1341/3621 cut-off events. [2023-12-09 15:18:03,355 INFO L125 PetriNetUnfolderBase]: For 34731/35931 co-relation queries the response was YES. [2023-12-09 15:18:03,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21369 conditions, 3621 events. 1341/3621 cut-off events. For 34731/35931 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 32105 event pairs, 80 based on Foata normal form. 40/3407 useless extension candidates. Maximal degree in co-relation 16429. Up to 1842 conditions per place. [2023-12-09 15:18:03,382 INFO L140 encePairwiseOnDemand]: 104/108 looper letters, 350 selfloop transitions, 7 changer transitions 13/639 dead transitions. [2023-12-09 15:18:03,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 639 transitions, 11350 flow [2023-12-09 15:18:03,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-09 15:18:03,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-12-09 15:18:03,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 392 transitions. [2023-12-09 15:18:03,384 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9074074074074074 [2023-12-09 15:18:03,384 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 392 transitions. [2023-12-09 15:18:03,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 392 transitions. [2023-12-09 15:18:03,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:18:03,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 392 transitions. [2023-12-09 15:18:03,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:03,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:03,386 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:03,387 INFO L308 CegarLoopForPetriNet]: 96 programPoint places, 84 predicate places. [2023-12-09 15:18:03,387 INFO L500 AbstractCegarLoop]: Abstraction has has 180 places, 639 transitions, 11350 flow [2023-12-09 15:18:03,387 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:03,387 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:18:03,387 INFO L233 CegarLoopForPetriNet]: trace histogram [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] [2023-12-09 15:18:03,387 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-09 15:18:03,388 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:18:03,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:18:03,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1043637133, now seen corresponding path program 1 times [2023-12-09 15:18:03,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:18:03,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133592751] [2023-12-09 15:18:03,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:18:03,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:18:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:18:03,735 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:18:03,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:18:03,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133592751] [2023-12-09 15:18:03,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133592751] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:18:03,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668615348] [2023-12-09 15:18:03,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:18:03,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:18:03,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:18:03,737 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:18:03,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-09 15:18:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:18:03,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-09 15:18:03,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:18:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:18:03,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:18:04,117 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:18:04,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668615348] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:18:04,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:18:04,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2023-12-09 15:18:04,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907011246] [2023-12-09 15:18:04,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:18:04,119 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:18:04,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:18:04,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:18:04,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-09 15:18:04,120 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 108 [2023-12-09 15:18:04,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 639 transitions, 11350 flow. Second operand has 11 states, 11 states have (on average 81.36363636363636) internal successors, (895), 11 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:04,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:18:04,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 108 [2023-12-09 15:18:04,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:18:05,607 INFO L124 PetriNetUnfolderBase]: 3048/8426 cut-off events. [2023-12-09 15:18:05,607 INFO L125 PetriNetUnfolderBase]: For 97709/100386 co-relation queries the response was YES. [2023-12-09 15:18:05,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50471 conditions, 8426 events. 3048/8426 cut-off events. For 97709/100386 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 84826 event pairs, 216 based on Foata normal form. 84/7913 useless extension candidates. Maximal degree in co-relation 40731. Up to 4219 conditions per place. [2023-12-09 15:18:05,682 INFO L140 encePairwiseOnDemand]: 92/108 looper letters, 619 selfloop transitions, 235 changer transitions 25/1142 dead transitions. [2023-12-09 15:18:05,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 1142 transitions, 24787 flow [2023-12-09 15:18:05,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-09 15:18:05,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-12-09 15:18:05,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1249 transitions. [2023-12-09 15:18:05,686 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7709876543209877 [2023-12-09 15:18:05,686 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1249 transitions. [2023-12-09 15:18:05,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1249 transitions. [2023-12-09 15:18:05,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:18:05,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1249 transitions. [2023-12-09 15:18:05,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 83.26666666666667) internal successors, (1249), 15 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:05,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 108.0) internal successors, (1728), 16 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:05,691 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 108.0) internal successors, (1728), 16 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:05,691 INFO L308 CegarLoopForPetriNet]: 96 programPoint places, 98 predicate places. [2023-12-09 15:18:05,691 INFO L500 AbstractCegarLoop]: Abstraction has has 194 places, 1142 transitions, 24787 flow [2023-12-09 15:18:05,692 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.36363636363636) internal successors, (895), 11 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:05,692 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:18:05,692 INFO L233 CegarLoopForPetriNet]: trace histogram [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] [2023-12-09 15:18:05,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-09 15:18:05,897 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:18:05,897 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:18:05,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:18:05,898 INFO L85 PathProgramCache]: Analyzing trace with hash -265986315, now seen corresponding path program 2 times [2023-12-09 15:18:05,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:18:05,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050560451] [2023-12-09 15:18:05,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:18:05,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:18:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:18:06,198 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:18:06,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:18:06,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050560451] [2023-12-09 15:18:06,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050560451] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:18:06,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461336342] [2023-12-09 15:18:06,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:18:06,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:18:06,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:18:06,214 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:18:06,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-09 15:18:06,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:18:06,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:18:06,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-09 15:18:06,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:18:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:18:06,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:18:06,566 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:18:06,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461336342] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:18:06,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:18:06,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2023-12-09 15:18:06,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602138906] [2023-12-09 15:18:06,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:18:06,568 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-09 15:18:06,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:18:06,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-09 15:18:06,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-09 15:18:06,569 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 108 [2023-12-09 15:18:06,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 1142 transitions, 24787 flow. Second operand has 12 states, 12 states have (on average 81.16666666666667) internal successors, (974), 12 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:06,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:18:06,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 108 [2023-12-09 15:18:06,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:18:08,111 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([263] L44-->L51: Formula: (= v_~pos~0_25 (+ v_~pos~0_26 1)) InVars {~pos~0=v_~pos~0_26} OutVars{thread1Thread1of1ForFork1_#t~post1=|v_thread1Thread1of1ForFork1_#t~post1_1|, ~pos~0=v_~pos~0_25} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post1, ~pos~0][333], [1134#(< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))), 162#true, 110#true, 145#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), 6#L94-4true, thread2Thread1of1ForFork0InUse, 1352#(= (* (div ~d2~0 256) 256) ~d2~0), thread1Thread1of1ForFork1InUse, 1983#true, 1355#true, 156#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i2~0 1) (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296))), 1347#(not (= (* 256 (div ~d1~0 256)) ~d1~0)), 732#true, 180#(and (= (* (div ~i2~0 4294967296) 4294967296) ~i2~0) (<= (+ (* (div ~N~0 2147483648) 2147483648) 1) ~N~0)), 21#L51true, 126#true, 68#L70true]) [2023-12-09 15:18:08,112 INFO L294 olderBase$Statistics]: this new event has 86 ancestors and is cut-off event [2023-12-09 15:18:08,112 INFO L297 olderBase$Statistics]: existing Event has 79 ancestors and is cut-off event [2023-12-09 15:18:08,112 INFO L297 olderBase$Statistics]: existing Event has 72 ancestors and is cut-off event [2023-12-09 15:18:08,112 INFO L297 olderBase$Statistics]: existing Event has 72 ancestors and is cut-off event [2023-12-09 15:18:08,180 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([263] L44-->L51: Formula: (= v_~pos~0_25 (+ v_~pos~0_26 1)) InVars {~pos~0=v_~pos~0_26} OutVars{thread1Thread1of1ForFork1_#t~post1=|v_thread1Thread1of1ForFork1_#t~post1_1|, ~pos~0=v_~pos~0_25} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post1, ~pos~0][336], [1134#(< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))), 162#true, 110#true, 1353#(and (<= (div ~d2~0 256) 0) (<= 1 ~d2~0)), 145#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), 6#L94-4true, thread2Thread1of1ForFork0InUse, thread1Thread1of1ForFork1InUse, 1983#true, 1355#true, 51#L73true, 156#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i2~0 1) (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296))), 732#true, 1347#(not (= (* 256 (div ~d1~0 256)) ~d1~0)), 180#(and (= (* (div ~i2~0 4294967296) 4294967296) ~i2~0) (<= (+ (* (div ~N~0 2147483648) 2147483648) 1) ~N~0)), 21#L51true, 126#true]) [2023-12-09 15:18:08,181 INFO L294 olderBase$Statistics]: this new event has 87 ancestors and is cut-off event [2023-12-09 15:18:08,181 INFO L297 olderBase$Statistics]: existing Event has 73 ancestors and is cut-off event [2023-12-09 15:18:08,181 INFO L297 olderBase$Statistics]: existing Event has 80 ancestors and is cut-off event [2023-12-09 15:18:08,181 INFO L297 olderBase$Statistics]: existing Event has 73 ancestors and is cut-off event [2023-12-09 15:18:09,715 INFO L124 PetriNetUnfolderBase]: 4632/13134 cut-off events. [2023-12-09 15:18:09,716 INFO L125 PetriNetUnfolderBase]: For 176007/179746 co-relation queries the response was YES. [2023-12-09 15:18:09,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80825 conditions, 13134 events. 4632/13134 cut-off events. For 176007/179746 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 142605 event pairs, 368 based on Foata normal form. 351/12555 useless extension candidates. Maximal degree in co-relation 75610. Up to 6490 conditions per place. [2023-12-09 15:18:09,890 INFO L140 encePairwiseOnDemand]: 92/108 looper letters, 911 selfloop transitions, 433 changer transitions 34/1641 dead transitions. [2023-12-09 15:18:09,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 1641 transitions, 40117 flow [2023-12-09 15:18:09,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-09 15:18:09,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-12-09 15:18:09,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1421 transitions. [2023-12-09 15:18:09,892 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7739651416122004 [2023-12-09 15:18:09,892 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1421 transitions. [2023-12-09 15:18:09,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1421 transitions. [2023-12-09 15:18:09,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:18:09,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1421 transitions. [2023-12-09 15:18:09,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 83.58823529411765) internal successors, (1421), 17 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:09,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 108.0) internal successors, (1944), 18 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:09,897 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 108.0) internal successors, (1944), 18 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:09,898 INFO L308 CegarLoopForPetriNet]: 96 programPoint places, 114 predicate places. [2023-12-09 15:18:09,898 INFO L500 AbstractCegarLoop]: Abstraction has has 210 places, 1641 transitions, 40117 flow [2023-12-09 15:18:09,898 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.16666666666667) internal successors, (974), 12 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:09,898 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:18:09,899 INFO L233 CegarLoopForPetriNet]: trace histogram [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] [2023-12-09 15:18:09,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-09 15:18:10,103 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:18:10,104 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:18:10,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:18:10,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1118307179, now seen corresponding path program 3 times [2023-12-09 15:18:10,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:18:10,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750505484] [2023-12-09 15:18:10,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:18:10,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:18:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:18:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:18:10,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:18:10,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750505484] [2023-12-09 15:18:10,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750505484] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:18:10,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443882480] [2023-12-09 15:18:10,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:18:10,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:18:10,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:18:10,377 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:18:10,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-09 15:18:10,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-09 15:18:10,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:18:10,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-09 15:18:10,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:18:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:18:10,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:18:10,779 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:18:10,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443882480] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:18:10,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:18:10,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2023-12-09 15:18:10,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422102973] [2023-12-09 15:18:10,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:18:10,780 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:18:10,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:18:10,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:18:10,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-09 15:18:10,782 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 108 [2023-12-09 15:18:10,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 1641 transitions, 40117 flow. Second operand has 11 states, 11 states have (on average 81.36363636363636) internal successors, (895), 11 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:10,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:18:10,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 108 [2023-12-09 15:18:10,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:18:15,201 INFO L124 PetriNetUnfolderBase]: 4940/14133 cut-off events. [2023-12-09 15:18:15,201 INFO L125 PetriNetUnfolderBase]: For 218651/222725 co-relation queries the response was YES. [2023-12-09 15:18:15,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89894 conditions, 14133 events. 4940/14133 cut-off events. For 218651/222725 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 156508 event pairs, 403 based on Foata normal form. 231/13357 useless extension candidates. Maximal degree in co-relation 83202. Up to 6954 conditions per place. [2023-12-09 15:18:15,328 INFO L140 encePairwiseOnDemand]: 92/108 looper letters, 1344 selfloop transitions, 112 changer transitions 42/1761 dead transitions. [2023-12-09 15:18:15,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 1761 transitions, 46153 flow [2023-12-09 15:18:15,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-09 15:18:15,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-12-09 15:18:15,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1247 transitions. [2023-12-09 15:18:15,331 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.769753086419753 [2023-12-09 15:18:15,331 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1247 transitions. [2023-12-09 15:18:15,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1247 transitions. [2023-12-09 15:18:15,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:18:15,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1247 transitions. [2023-12-09 15:18:15,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 83.13333333333334) internal successors, (1247), 15 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:15,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 108.0) internal successors, (1728), 16 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:15,337 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 108.0) internal successors, (1728), 16 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:15,338 INFO L308 CegarLoopForPetriNet]: 96 programPoint places, 128 predicate places. [2023-12-09 15:18:15,338 INFO L500 AbstractCegarLoop]: Abstraction has has 224 places, 1761 transitions, 46153 flow [2023-12-09 15:18:15,338 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.36363636363636) internal successors, (895), 11 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:15,338 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:18:15,338 INFO L233 CegarLoopForPetriNet]: trace histogram [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] [2023-12-09 15:18:15,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-09 15:18:15,543 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-09 15:18:15,543 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:18:15,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:18:15,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1914016299, now seen corresponding path program 4 times [2023-12-09 15:18:15,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:18:15,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936000927] [2023-12-09 15:18:15,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:18:15,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:18:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:18:15,810 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:18:15,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:18:15,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936000927] [2023-12-09 15:18:15,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936000927] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:18:15,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091824115] [2023-12-09 15:18:15,812 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:18:15,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:18:15,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:18:15,830 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:18:15,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-09 15:18:15,911 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:18:15,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:18:15,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-09 15:18:15,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:18:16,107 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:18:16,107 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:18:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:18:16,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091824115] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:18:16,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:18:16,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2023-12-09 15:18:16,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833519983] [2023-12-09 15:18:16,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:18:16,215 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-09 15:18:16,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:18:16,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-09 15:18:16,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-09 15:18:16,217 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 108 [2023-12-09 15:18:16,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 1761 transitions, 46153 flow. Second operand has 12 states, 12 states have (on average 81.16666666666667) internal successors, (974), 12 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:16,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:18:16,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 108 [2023-12-09 15:18:16,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:18:21,710 INFO L124 PetriNetUnfolderBase]: 6380/18461 cut-off events. [2023-12-09 15:18:21,710 INFO L125 PetriNetUnfolderBase]: For 328168/334154 co-relation queries the response was YES. [2023-12-09 15:18:21,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120975 conditions, 18461 events. 6380/18461 cut-off events. For 328168/334154 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 215665 event pairs, 530 based on Foata normal form. 343/17479 useless extension candidates. Maximal degree in co-relation 112243. Up to 9004 conditions per place. [2023-12-09 15:18:21,872 INFO L140 encePairwiseOnDemand]: 92/108 looper letters, 1566 selfloop transitions, 323 changer transitions 59/2211 dead transitions. [2023-12-09 15:18:21,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 2211 transitions, 63124 flow [2023-12-09 15:18:21,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-09 15:18:21,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-12-09 15:18:21,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1419 transitions. [2023-12-09 15:18:21,874 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7728758169934641 [2023-12-09 15:18:21,874 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1419 transitions. [2023-12-09 15:18:21,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1419 transitions. [2023-12-09 15:18:21,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:18:21,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1419 transitions. [2023-12-09 15:18:21,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 83.47058823529412) internal successors, (1419), 17 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:21,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 108.0) internal successors, (1944), 18 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:21,879 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 108.0) internal successors, (1944), 18 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:21,880 INFO L308 CegarLoopForPetriNet]: 96 programPoint places, 144 predicate places. [2023-12-09 15:18:21,880 INFO L500 AbstractCegarLoop]: Abstraction has has 240 places, 2211 transitions, 63124 flow [2023-12-09 15:18:21,880 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.16666666666667) internal successors, (974), 12 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:21,880 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:18:21,881 INFO L233 CegarLoopForPetriNet]: trace histogram [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] [2023-12-09 15:18:21,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-09 15:18:22,085 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:18:22,086 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:18:22,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:18:22,086 INFO L85 PathProgramCache]: Analyzing trace with hash -687230545, now seen corresponding path program 5 times [2023-12-09 15:18:22,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:18:22,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792716592] [2023-12-09 15:18:22,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:18:22,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:18:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:18:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:18:22,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:18:22,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792716592] [2023-12-09 15:18:22,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792716592] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:18:22,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895361061] [2023-12-09 15:18:22,303 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:18:22,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:18:22,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:18:22,304 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:18:22,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-09 15:18:22,389 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-09 15:18:22,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:18:22,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-09 15:18:22,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:18:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:18:22,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:18:22,636 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:18:22,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895361061] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:18:22,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:18:22,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2023-12-09 15:18:22,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538752491] [2023-12-09 15:18:22,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:18:22,637 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:18:22,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:18:22,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:18:22,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-09 15:18:22,638 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 108 [2023-12-09 15:18:22,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 2211 transitions, 63124 flow. Second operand has 11 states, 11 states have (on average 81.36363636363636) internal successors, (895), 11 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:22,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:18:22,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 108 [2023-12-09 15:18:22,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:18:29,242 INFO L124 PetriNetUnfolderBase]: 6656/19274 cut-off events. [2023-12-09 15:18:29,242 INFO L125 PetriNetUnfolderBase]: For 393508/400768 co-relation queries the response was YES. [2023-12-09 15:18:29,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131069 conditions, 19274 events. 6656/19274 cut-off events. For 393508/400768 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 227414 event pairs, 551 based on Foata normal form. 215/18107 useless extension candidates. Maximal degree in co-relation 91925. Up to 9397 conditions per place. [2023-12-09 15:18:29,413 INFO L140 encePairwiseOnDemand]: 92/108 looper letters, 1885 selfloop transitions, 104 changer transitions 67/2319 dead transitions. [2023-12-09 15:18:29,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 2319 transitions, 70336 flow [2023-12-09 15:18:29,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-09 15:18:29,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-12-09 15:18:29,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1246 transitions. [2023-12-09 15:18:29,415 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7691358024691358 [2023-12-09 15:18:29,415 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1246 transitions. [2023-12-09 15:18:29,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1246 transitions. [2023-12-09 15:18:29,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:18:29,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1246 transitions. [2023-12-09 15:18:29,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 83.06666666666666) internal successors, (1246), 15 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:29,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 108.0) internal successors, (1728), 16 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:29,418 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 108.0) internal successors, (1728), 16 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:29,419 INFO L308 CegarLoopForPetriNet]: 96 programPoint places, 158 predicate places. [2023-12-09 15:18:29,419 INFO L500 AbstractCegarLoop]: Abstraction has has 254 places, 2319 transitions, 70336 flow [2023-12-09 15:18:29,419 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.36363636363636) internal successors, (895), 11 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:29,419 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:18:29,419 INFO L233 CegarLoopForPetriNet]: trace histogram [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] [2023-12-09 15:18:29,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-09 15:18:29,625 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:18:29,625 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:18:29,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:18:29,625 INFO L85 PathProgramCache]: Analyzing trace with hash 812425799, now seen corresponding path program 6 times [2023-12-09 15:18:29,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:18:29,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898438402] [2023-12-09 15:18:29,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:18:29,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:18:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:18:29,844 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:18:29,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:18:29,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898438402] [2023-12-09 15:18:29,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898438402] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:18:29,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159655341] [2023-12-09 15:18:29,846 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:18:29,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:18:29,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:18:29,862 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) [2023-12-09 15:18:29,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-09 15:18:29,960 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-09 15:18:29,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:18:29,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-09 15:18:29,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:18:30,091 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:18:30,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:18:30,198 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:18:30,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159655341] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:18:30,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:18:30,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2023-12-09 15:18:30,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863467877] [2023-12-09 15:18:30,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:18:30,198 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-09 15:18:30,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:18:30,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-09 15:18:30,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-09 15:18:30,199 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 108 [2023-12-09 15:18:30,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 2319 transitions, 70336 flow. Second operand has 12 states, 12 states have (on average 81.16666666666667) internal successors, (974), 12 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:30,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:18:30,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 108 [2023-12-09 15:18:30,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:18:39,471 INFO L124 PetriNetUnfolderBase]: 8767/25571 cut-off events. [2023-12-09 15:18:39,471 INFO L125 PetriNetUnfolderBase]: For 592664/603051 co-relation queries the response was YES. [2023-12-09 15:18:39,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178766 conditions, 25571 events. 8767/25571 cut-off events. For 592664/603051 co-relation queries the response was YES. Maximal size of possible extension queue 1156. Compared 312763 event pairs, 773 based on Foata normal form. 732/24445 useless extension candidates. Maximal degree in co-relation 119570. Up to 12281 conditions per place. [2023-12-09 15:18:39,858 INFO L140 encePairwiseOnDemand]: 92/108 looper letters, 2041 selfloop transitions, 591 changer transitions 94/2989 dead transitions. [2023-12-09 15:18:39,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 2989 transitions, 97808 flow [2023-12-09 15:18:39,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-09 15:18:39,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-12-09 15:18:39,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1421 transitions. [2023-12-09 15:18:39,861 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7739651416122004 [2023-12-09 15:18:39,861 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1421 transitions. [2023-12-09 15:18:39,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1421 transitions. [2023-12-09 15:18:39,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:18:39,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1421 transitions. [2023-12-09 15:18:39,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 83.58823529411765) internal successors, (1421), 17 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:39,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 108.0) internal successors, (1944), 18 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:39,865 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 108.0) internal successors, (1944), 18 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:39,865 INFO L308 CegarLoopForPetriNet]: 96 programPoint places, 174 predicate places. [2023-12-09 15:18:39,865 INFO L500 AbstractCegarLoop]: Abstraction has has 270 places, 2989 transitions, 97808 flow [2023-12-09 15:18:39,865 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.16666666666667) internal successors, (974), 12 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:39,865 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:18:39,866 INFO L233 CegarLoopForPetriNet]: trace histogram [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] [2023-12-09 15:18:39,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-09 15:18:40,070 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,SelfDestructingSolverStorable15 [2023-12-09 15:18:40,070 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:18:40,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:18:40,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1270007183, now seen corresponding path program 7 times [2023-12-09 15:18:40,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:18:40,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586588960] [2023-12-09 15:18:40,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:18:40,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:18:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:18:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:18:40,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:18:40,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586588960] [2023-12-09 15:18:40,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586588960] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:18:40,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303898542] [2023-12-09 15:18:40,293 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:18:40,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:18:40,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:18:40,295 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) [2023-12-09 15:18:40,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-09 15:18:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:18:40,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-09 15:18:40,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:18:40,494 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:18:40,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:18:40,600 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:18:40,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303898542] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:18:40,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:18:40,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2023-12-09 15:18:40,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699125449] [2023-12-09 15:18:40,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:18:40,601 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-09 15:18:40,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:18:40,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-09 15:18:40,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-09 15:18:40,602 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 108 [2023-12-09 15:18:40,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 2989 transitions, 97808 flow. Second operand has 12 states, 12 states have (on average 81.16666666666667) internal successors, (974), 12 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:40,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:18:40,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 108 [2023-12-09 15:18:40,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:18:53,534 INFO L124 PetriNetUnfolderBase]: 9486/27870 cut-off events. [2023-12-09 15:18:53,535 INFO L125 PetriNetUnfolderBase]: For 723462/733866 co-relation queries the response was YES. [2023-12-09 15:18:53,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200709 conditions, 27870 events. 9486/27870 cut-off events. For 723462/733866 co-relation queries the response was YES. Maximal size of possible extension queue 1254. Compared 348657 event pairs, 842 based on Foata normal form. 462/26271 useless extension candidates. Maximal degree in co-relation 145396. Up to 13316 conditions per place. [2023-12-09 15:18:53,976 INFO L140 encePairwiseOnDemand]: 92/108 looper letters, 2649 selfloop transitions, 252 changer transitions 115/3279 dead transitions. [2023-12-09 15:18:53,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 3279 transitions, 113674 flow [2023-12-09 15:18:53,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-09 15:18:53,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-12-09 15:18:53,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1416 transitions. [2023-12-09 15:18:53,978 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7712418300653595 [2023-12-09 15:18:53,978 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1416 transitions. [2023-12-09 15:18:53,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1416 transitions. [2023-12-09 15:18:53,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:18:53,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1416 transitions. [2023-12-09 15:18:53,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 83.29411764705883) internal successors, (1416), 17 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:53,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 108.0) internal successors, (1944), 18 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:53,981 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 108.0) internal successors, (1944), 18 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:53,981 INFO L308 CegarLoopForPetriNet]: 96 programPoint places, 190 predicate places. [2023-12-09 15:18:53,982 INFO L500 AbstractCegarLoop]: Abstraction has has 286 places, 3279 transitions, 113674 flow [2023-12-09 15:18:53,982 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.16666666666667) internal successors, (974), 12 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:53,982 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:18:53,982 INFO L233 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] [2023-12-09 15:18:53,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-09 15:18:54,186 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-09 15:18:54,187 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:18:54,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:18:54,187 INFO L85 PathProgramCache]: Analyzing trace with hash -683437509, now seen corresponding path program 1 times [2023-12-09 15:18:54,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:18:54,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975828856] [2023-12-09 15:18:54,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:18:54,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:18:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:18:54,270 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-09 15:18:54,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:18:54,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975828856] [2023-12-09 15:18:54,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975828856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:18:54,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:18:54,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 15:18:54,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530742395] [2023-12-09 15:18:54,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:18:54,271 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-09 15:18:54,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:18:54,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-09 15:18:54,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-09 15:18:54,271 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 108 [2023-12-09 15:18:54,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 3279 transitions, 113674 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:18:54,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:18:54,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 108 [2023-12-09 15:18:54,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:01,084 INFO L124 PetriNetUnfolderBase]: 4503/13132 cut-off events. [2023-12-09 15:19:01,084 INFO L125 PetriNetUnfolderBase]: For 374102/379609 co-relation queries the response was YES. [2023-12-09 15:19:01,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97169 conditions, 13132 events. 4503/13132 cut-off events. For 374102/379609 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 145850 event pairs, 369 based on Foata normal form. 349/12582 useless extension candidates. Maximal degree in co-relation 90696. Up to 6302 conditions per place. [2023-12-09 15:19:01,222 INFO L140 encePairwiseOnDemand]: 104/108 looper letters, 1304 selfloop transitions, 7 changer transitions 94/1847 dead transitions. [2023-12-09 15:19:01,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 1847 transitions, 62368 flow [2023-12-09 15:19:01,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-09 15:19:01,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-12-09 15:19:01,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2023-12-09 15:19:01,223 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9050925925925926 [2023-12-09 15:19:01,223 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 391 transitions. [2023-12-09 15:19:01,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 391 transitions. [2023-12-09 15:19:01,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:01,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 391 transitions. [2023-12-09 15:19:01,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:01,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:01,224 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:01,225 INFO L308 CegarLoopForPetriNet]: 96 programPoint places, 193 predicate places. [2023-12-09 15:19:01,225 INFO L500 AbstractCegarLoop]: Abstraction has has 289 places, 1847 transitions, 62368 flow [2023-12-09 15:19:01,226 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:01,226 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:01,226 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 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] [2023-12-09 15:19:01,226 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-09 15:19:01,226 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:19:01,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:01,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1272054145, now seen corresponding path program 8 times [2023-12-09 15:19:01,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:01,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287461347] [2023-12-09 15:19:01,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:01,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:01,570 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:01,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:01,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287461347] [2023-12-09 15:19:01,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287461347] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:19:01,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036818605] [2023-12-09 15:19:01,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:19:01,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:19:01,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:19:01,589 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) [2023-12-09 15:19:01,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-09 15:19:01,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:19:01,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:19:01,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-09 15:19:01,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:19:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-09 15:19:02,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:19:03,217 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:03,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036818605] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:19:03,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:19:03,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 17] total 35 [2023-12-09 15:19:03,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684351432] [2023-12-09 15:19:03,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:19:03,218 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-09 15:19:03,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:03,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-09 15:19:03,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1032, Unknown=0, NotChecked=0, Total=1190 [2023-12-09 15:19:03,220 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 108 [2023-12-09 15:19:03,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 1847 transitions, 62368 flow. Second operand has 35 states, 35 states have (on average 69.82857142857142) internal successors, (2444), 35 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:19:03,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:03,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 108 [2023-12-09 15:19:03,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:20:02,395 INFO L124 PetriNetUnfolderBase]: 10579/30296 cut-off events. [2023-12-09 15:20:02,396 INFO L125 PetriNetUnfolderBase]: For 991557/1006408 co-relation queries the response was YES. [2023-12-09 15:20:02,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248387 conditions, 30296 events. 10579/30296 cut-off events. For 991557/1006408 co-relation queries the response was YES. Maximal size of possible extension queue 1546. Compared 385614 event pairs, 314 based on Foata normal form. 850/29411 useless extension candidates. Maximal degree in co-relation 171010. Up to 15612 conditions per place. [2023-12-09 15:20:02,726 INFO L140 encePairwiseOnDemand]: 86/108 looper letters, 4077 selfloop transitions, 387 changer transitions 176/4757 dead transitions. [2023-12-09 15:20:02,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 4757 transitions, 173734 flow [2023-12-09 15:20:02,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2023-12-09 15:20:02,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2023-12-09 15:20:02,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 8765 transitions. [2023-12-09 15:20:02,733 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.659816320385426 [2023-12-09 15:20:02,733 INFO L72 ComplementDD]: Start complementDD. Operand 123 states and 8765 transitions. [2023-12-09 15:20:02,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 123 states and 8765 transitions. [2023-12-09 15:20:02,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:20:02,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 123 states and 8765 transitions. [2023-12-09 15:20:02,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 124 states, 123 states have (on average 71.26016260162602) internal successors, (8765), 123 states have internal predecessors, (8765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:20:02,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 124 states, 124 states have (on average 108.0) internal successors, (13392), 124 states have internal predecessors, (13392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:20:02,754 INFO L81 ComplementDD]: Finished complementDD. Result has 124 states, 124 states have (on average 108.0) internal successors, (13392), 124 states have internal predecessors, (13392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:20:02,754 INFO L308 CegarLoopForPetriNet]: 96 programPoint places, 315 predicate places. [2023-12-09 15:20:02,754 INFO L500 AbstractCegarLoop]: Abstraction has has 411 places, 4757 transitions, 173734 flow [2023-12-09 15:20:02,755 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 69.82857142857142) internal successors, (2444), 35 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:20:02,755 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:20:02,755 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 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] [2023-12-09 15:20:02,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-09 15:20:02,957 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:20:02,957 INFO L425 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:20:02,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:20:02,957 INFO L85 PathProgramCache]: Analyzing trace with hash 171323755, now seen corresponding path program 9 times [2023-12-09 15:20:02,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:20:02,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405500378] [2023-12-09 15:20:02,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:20:02,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:20:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:20:03,396 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:20:03,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:20:03,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405500378] [2023-12-09 15:20:03,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405500378] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:20:03,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697005955] [2023-12-09 15:20:03,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:20:03,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:20:03,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:20:03,409 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) [2023-12-09 15:20:03,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-09 15:20:03,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-09 15:20:03,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:20:03,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-09 15:20:03,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:20:04,274 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:20:04,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:20:05,196 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:20:05,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697005955] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:20:05,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:20:05,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 37 [2023-12-09 15:20:05,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989089698] [2023-12-09 15:20:05,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:20:05,199 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-09 15:20:05,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:20:05,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-09 15:20:05,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1161, Unknown=0, NotChecked=0, Total=1332 [2023-12-09 15:20:05,203 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 108 [2023-12-09 15:20:05,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 4757 transitions, 173734 flow. Second operand has 37 states, 37 states have (on average 69.83783783783784) internal successors, (2584), 37 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:20:05,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:20:05,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 108 [2023-12-09 15:20:05,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:20:37,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-09 15:20:48,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-09 15:21:07,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-09 15:21:09,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-09 15:21:46,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-12-09 15:22:21,298 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:22:21,298 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 [2023-12-09 15:22:21,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2023-12-09 15:22:21,340 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-09 15:22:21,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-09 15:22:21,544 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:22:21,545 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (37states, 67/108 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 196314 conditions, 22761 events (7691/22760 cut-off events. For 863610/877498 co-relation queries the response was YES. Maximal size of possible extension queue 2679. Compared 316100 event pairs, 75 based on Foata normal form. 1054/24671 useless extension candidates. Maximal degree in co-relation 163682. Up to 11887 conditions per place.). [2023-12-09 15:22:21,546 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-12-09 15:22:21,547 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-12-09 15:22:21,547 INFO L457 BasicCegarLoop]: Path program histogram: [9, 2, 2, 2, 2, 1, 1, 1] [2023-12-09 15:22:21,549 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:22:21,550 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:22:21,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:22:21 BasicIcfg [2023-12-09 15:22:21,553 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:22:21,553 INFO L158 Benchmark]: Toolchain (without parser) took 266857.90ms. Allocated memory was 177.2MB in the beginning and 4.2GB in the end (delta: 4.1GB). Free memory was 124.0MB in the beginning and 3.3GB in the end (delta: -3.1GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-09 15:22:21,553 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 177.2MB. Free memory was 127.4MB in the beginning and 127.3MB in the end (delta: 144.1kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:22:21,553 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.03ms. Allocated memory is still 177.2MB. Free memory was 124.0MB in the beginning and 112.5MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-09 15:22:21,554 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.54ms. Allocated memory is still 177.2MB. Free memory was 112.5MB in the beginning and 110.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:22:21,555 INFO L158 Benchmark]: Boogie Preprocessor took 19.82ms. Allocated memory is still 177.2MB. Free memory was 110.8MB in the beginning and 109.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 15:22:21,555 INFO L158 Benchmark]: RCFGBuilder took 322.96ms. Allocated memory is still 177.2MB. Free memory was 109.3MB in the beginning and 94.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-09 15:22:21,556 INFO L158 Benchmark]: TraceAbstraction took 266327.44ms. Allocated memory was 177.2MB in the beginning and 4.2GB in the end (delta: 4.1GB). Free memory was 94.0MB in the beginning and 3.3GB in the end (delta: -3.2GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-09 15:22:21,557 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 177.2MB. Free memory was 127.4MB in the beginning and 127.3MB in the end (delta: 144.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 154.03ms. Allocated memory is still 177.2MB. Free memory was 124.0MB in the beginning and 112.5MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.54ms. Allocated memory is still 177.2MB. Free memory was 112.5MB in the beginning and 110.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.82ms. Allocated memory is still 177.2MB. Free memory was 110.8MB in the beginning and 109.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 322.96ms. Allocated memory is still 177.2MB. Free memory was 109.3MB in the beginning and 94.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 266327.44ms. Allocated memory was 177.2MB in the beginning and 4.2GB in the end (delta: 4.1GB). Free memory was 94.0MB in the beginning and 3.3GB in the end (delta: -3.2GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (37states, 67/108 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 196314 conditions, 22761 events (7691/22760 cut-off events. For 863610/877498 co-relation queries the response was YES. Maximal size of possible extension queue 2679. Compared 316100 event pairs, 75 based on Foata normal form. 1054/24671 useless extension candidates. Maximal degree in co-relation 163682. Up to 11887 conditions per place.). - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (37states, 67/108 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 196314 conditions, 22761 events (7691/22760 cut-off events. For 863610/877498 co-relation queries the response was YES. Maximal size of possible extension queue 2679. Compared 316100 event pairs, 75 based on Foata normal form. 1054/24671 useless extension candidates. Maximal degree in co-relation 163682. Up to 11887 conditions per place.). - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (37states, 67/108 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 196314 conditions, 22761 events (7691/22760 cut-off events. For 863610/877498 co-relation queries the response was YES. Maximal size of possible extension queue 2679. Compared 316100 event pairs, 75 based on Foata normal form. 1054/24671 useless extension candidates. Maximal degree in co-relation 163682. Up to 11887 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 127 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 266.2s, OverallIterations: 20, TraceHistogramMax: 3, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 251.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 2892 SdHoareTripleChecker+Valid, 28.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2892 mSDsluCounter, 2326 SdHoareTripleChecker+Invalid, 27.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1915 mSDsCounter, 345 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8469 IncrementalHoareTripleChecker+Invalid, 8815 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 345 mSolverCounterUnsat, 411 mSDtfsCounter, 8469 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2768 GetRequests, 2085 SyntacticMatches, 78 SemanticMatches, 605 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29728 ImplicationChecksByTransitivity, 130.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=173734occurred in iteration=19, InterpolantAutomatonStates: 334, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 2998 NumberOfCodeBlocks, 2998 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 4060 ConstructedInterpolants, 0 QuantifiedInterpolants, 26706 SizeOfPredicates, 119 NumberOfNonLiveVariables, 2362 ConjunctsInSsa, 200 ConjunctsInUnsatCore, 42 InterpolantComputations, 9 PerfectInterpolantSequences, 113/614 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