/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/chl-word-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:14:01,061 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:14:01,111 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 15:14:01,143 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:14:01,143 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:14:01,144 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:14:01,144 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:14:01,144 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:14:01,144 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:14:01,147 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:14:01,148 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:14:01,148 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:14:01,148 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:14:01,149 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:14:01,149 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:14:01,149 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:14:01,149 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:14:01,150 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:14:01,150 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:14:01,150 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:14:01,150 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:14:01,150 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:14:01,151 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:14:01,151 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:14:01,151 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:14:01,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:14:01,151 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:14:01,151 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:14:01,152 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:14:01,152 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:14:01,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:14:01,152 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:14:01,153 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:14:01,153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:14:01,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:14:01,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:14:01,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:14:01,335 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:14:01,338 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:14:01,340 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2023-12-09 15:14:02,330 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:14:02,473 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:14:02,473 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2023-12-09 15:14:02,479 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d04e805ec/faab0f4978324085aa084a68ac63a831/FLAG14764c464 [2023-12-09 15:14:02,488 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d04e805ec/faab0f4978324085aa084a68ac63a831 [2023-12-09 15:14:02,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:14:02,491 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:14:02,491 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:14:02,491 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:14:02,494 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:14:02,495 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:14:02" (1/1) ... [2023-12-09 15:14:02,496 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a498950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:02, skipping insertion in model container [2023-12-09 15:14:02,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:14:02" (1/1) ... [2023-12-09 15:14:02,514 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:14:02,656 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/chl-word-symm.wvr.c[2874,2887] [2023-12-09 15:14:02,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:14:02,672 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:14:02,691 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/chl-word-symm.wvr.c[2874,2887] [2023-12-09 15:14:02,693 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:14:02,704 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:14:02,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:02 WrapperNode [2023-12-09 15:14:02,705 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:14:02,706 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:14:02,706 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:14:02,706 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:14:02,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:02" (1/1) ... [2023-12-09 15:14:02,714 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:02" (1/1) ... [2023-12-09 15:14:02,730 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 135 [2023-12-09 15:14:02,730 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:14:02,731 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:14:02,731 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:14:02,731 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:14:02,737 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:02" (1/1) ... [2023-12-09 15:14:02,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:02" (1/1) ... [2023-12-09 15:14:02,739 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:02" (1/1) ... [2023-12-09 15:14:02,739 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:02" (1/1) ... [2023-12-09 15:14:02,744 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:02" (1/1) ... [2023-12-09 15:14:02,747 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:02" (1/1) ... [2023-12-09 15:14:02,748 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:02" (1/1) ... [2023-12-09 15:14:02,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:02" (1/1) ... [2023-12-09 15:14:02,750 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:14:02,751 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:14:02,751 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:14:02,751 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:14:02,751 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:02" (1/1) ... [2023-12-09 15:14:02,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:14:02,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:02,780 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 15:14:02,814 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 15:14:02,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:14:02,820 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:14:02,820 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:14:02,820 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:14:02,820 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:14:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:14:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:14:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:14:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-09 15:14:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:14:02,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:14:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:14:02,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:14:02,822 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 15:14:02,906 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:14:02,907 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:14:03,132 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:14:03,142 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:14:03,142 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-09 15:14:03,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:14:03 BoogieIcfgContainer [2023-12-09 15:14:03,143 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:14:03,144 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:14:03,144 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:14:03,146 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:14:03,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:14:02" (1/3) ... [2023-12-09 15:14:03,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a85c25b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:14:03, skipping insertion in model container [2023-12-09 15:14:03,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:02" (2/3) ... [2023-12-09 15:14:03,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a85c25b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:14:03, skipping insertion in model container [2023-12-09 15:14:03,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:14:03" (3/3) ... [2023-12-09 15:14:03,152 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2023-12-09 15:14:03,163 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:14:03,164 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:14:03,164 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:14:03,231 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 15:14:03,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 234 transitions, 482 flow [2023-12-09 15:14:03,352 INFO L124 PetriNetUnfolderBase]: 21/232 cut-off events. [2023-12-09 15:14:03,352 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:14:03,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 232 events. 21/232 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 243 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 159. Up to 3 conditions per place. [2023-12-09 15:14:03,357 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 234 transitions, 482 flow [2023-12-09 15:14:03,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 223 transitions, 458 flow [2023-12-09 15:14:03,367 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:14:03,372 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;@74bda459, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:14:03,372 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 15:14:03,428 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:14:03,428 INFO L124 PetriNetUnfolderBase]: 21/222 cut-off events. [2023-12-09 15:14:03,428 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:14:03,428 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:03,429 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:03,429 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 15:14:03,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:03,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1062364339, now seen corresponding path program 1 times [2023-12-09 15:14:03,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:03,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294215330] [2023-12-09 15:14:03,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:03,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:04,362 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 15:14:04,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:04,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294215330] [2023-12-09 15:14:04,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294215330] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:04,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:04,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-09 15:14:04,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148698920] [2023-12-09 15:14:04,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:04,372 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 15:14:04,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:04,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 15:14:04,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-09 15:14:04,403 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 234 [2023-12-09 15:14:04,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 223 transitions, 458 flow. Second operand has 10 states, 10 states have (on average 158.6) internal successors, (1586), 10 states have internal predecessors, (1586), 0 states have call successors, (0), 0 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 15:14:04,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:04,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 234 [2023-12-09 15:14:04,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:04,710 INFO L124 PetriNetUnfolderBase]: 53/482 cut-off events. [2023-12-09 15:14:04,711 INFO L125 PetriNetUnfolderBase]: For 66/67 co-relation queries the response was YES. [2023-12-09 15:14:04,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 717 conditions, 482 events. 53/482 cut-off events. For 66/67 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1967 event pairs, 17 based on Foata normal form. 31/463 useless extension candidates. Maximal degree in co-relation 307. Up to 93 conditions per place. [2023-12-09 15:14:04,719 INFO L140 encePairwiseOnDemand]: 211/234 looper letters, 108 selfloop transitions, 3 changer transitions 28/282 dead transitions. [2023-12-09 15:14:04,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 282 transitions, 875 flow [2023-12-09 15:14:04,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:14:04,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:14:04,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1695 transitions. [2023-12-09 15:14:04,734 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7243589743589743 [2023-12-09 15:14:04,735 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1695 transitions. [2023-12-09 15:14:04,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1695 transitions. [2023-12-09 15:14:04,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:04,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1695 transitions. [2023-12-09 15:14:04,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 169.5) internal successors, (1695), 10 states have internal predecessors, (1695), 0 states have call successors, (0), 0 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 15:14:04,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 234.0) internal successors, (2574), 11 states have internal predecessors, (2574), 0 states have call successors, (0), 0 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 15:14:04,752 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 234.0) internal successors, (2574), 11 states have internal predecessors, (2574), 0 states have call successors, (0), 0 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 15:14:04,755 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 9 predicate places. [2023-12-09 15:14:04,755 INFO L500 AbstractCegarLoop]: Abstraction has has 218 places, 282 transitions, 875 flow [2023-12-09 15:14:04,756 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 158.6) internal successors, (1586), 10 states have internal predecessors, (1586), 0 states have call successors, (0), 0 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 15:14:04,756 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:04,757 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:04,757 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:14:04,757 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 15:14:04,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:04,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1878094031, now seen corresponding path program 2 times [2023-12-09 15:14:04,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:04,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072122036] [2023-12-09 15:14:04,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:04,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:05,276 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 15:14:05,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:05,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072122036] [2023-12-09 15:14:05,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072122036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:05,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:05,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-09 15:14:05,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642319866] [2023-12-09 15:14:05,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:05,279 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 15:14:05,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:05,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 15:14:05,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-09 15:14:05,283 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 234 [2023-12-09 15:14:05,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 282 transitions, 875 flow. Second operand has 10 states, 10 states have (on average 158.6) internal successors, (1586), 10 states have internal predecessors, (1586), 0 states have call successors, (0), 0 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 15:14:05,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:05,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 234 [2023-12-09 15:14:05,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:05,548 INFO L124 PetriNetUnfolderBase]: 53/500 cut-off events. [2023-12-09 15:14:05,548 INFO L125 PetriNetUnfolderBase]: For 189/249 co-relation queries the response was YES. [2023-12-09 15:14:05,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 500 events. 53/500 cut-off events. For 189/249 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2153 event pairs, 10 based on Foata normal form. 19/473 useless extension candidates. Maximal degree in co-relation 417. Up to 93 conditions per place. [2023-12-09 15:14:05,551 INFO L140 encePairwiseOnDemand]: 224/234 looper letters, 108 selfloop transitions, 3 changer transitions 47/301 dead transitions. [2023-12-09 15:14:05,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 301 transitions, 1279 flow [2023-12-09 15:14:05,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:14:05,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:14:05,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1671 transitions. [2023-12-09 15:14:05,554 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7141025641025641 [2023-12-09 15:14:05,554 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1671 transitions. [2023-12-09 15:14:05,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1671 transitions. [2023-12-09 15:14:05,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:05,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1671 transitions. [2023-12-09 15:14:05,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 167.1) internal successors, (1671), 10 states have internal predecessors, (1671), 0 states have call successors, (0), 0 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 15:14:05,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 234.0) internal successors, (2574), 11 states have internal predecessors, (2574), 0 states have call successors, (0), 0 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 15:14:05,561 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 234.0) internal successors, (2574), 11 states have internal predecessors, (2574), 0 states have call successors, (0), 0 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 15:14:05,562 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 18 predicate places. [2023-12-09 15:14:05,562 INFO L500 AbstractCegarLoop]: Abstraction has has 227 places, 301 transitions, 1279 flow [2023-12-09 15:14:05,563 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 158.6) internal successors, (1586), 10 states have internal predecessors, (1586), 0 states have call successors, (0), 0 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 15:14:05,563 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:05,564 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:05,564 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:14:05,564 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 15:14:05,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:05,566 INFO L85 PathProgramCache]: Analyzing trace with hash -340983982, now seen corresponding path program 1 times [2023-12-09 15:14:05,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:05,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497695957] [2023-12-09 15:14:05,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:05,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:05,610 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 15:14:05,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:05,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497695957] [2023-12-09 15:14:05,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497695957] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:05,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:05,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 15:14:05,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049159408] [2023-12-09 15:14:05,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:05,612 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 15:14:05,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:05,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 15:14:05,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 15:14:05,613 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 234 [2023-12-09 15:14:05,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 301 transitions, 1279 flow. Second operand has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 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 15:14:05,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:05,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 234 [2023-12-09 15:14:05,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:05,661 INFO L124 PetriNetUnfolderBase]: 38/397 cut-off events. [2023-12-09 15:14:05,661 INFO L125 PetriNetUnfolderBase]: For 200/226 co-relation queries the response was YES. [2023-12-09 15:14:05,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 397 events. 38/397 cut-off events. For 200/226 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1405 event pairs, 7 based on Foata normal form. 2/367 useless extension candidates. Maximal degree in co-relation 306. Up to 95 conditions per place. [2023-12-09 15:14:05,663 INFO L140 encePairwiseOnDemand]: 230/234 looper letters, 11 selfloop transitions, 2 changer transitions 46/250 dead transitions. [2023-12-09 15:14:05,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 250 transitions, 1024 flow [2023-12-09 15:14:05,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 15:14:05,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 15:14:05,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 645 transitions. [2023-12-09 15:14:05,681 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9188034188034188 [2023-12-09 15:14:05,681 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 645 transitions. [2023-12-09 15:14:05,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 645 transitions. [2023-12-09 15:14:05,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:05,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 645 transitions. [2023-12-09 15:14:05,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 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 15:14:05,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 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 15:14:05,683 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 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 15:14:05,684 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 20 predicate places. [2023-12-09 15:14:05,684 INFO L500 AbstractCegarLoop]: Abstraction has has 229 places, 250 transitions, 1024 flow [2023-12-09 15:14:05,684 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 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 15:14:05,684 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:05,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:05,685 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:14:05,685 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 15:14:05,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:05,685 INFO L85 PathProgramCache]: Analyzing trace with hash 371768321, now seen corresponding path program 1 times [2023-12-09 15:14:05,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:05,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834690310] [2023-12-09 15:14:05,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:05,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:05,781 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 15:14:05,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:05,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834690310] [2023-12-09 15:14:05,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834690310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:05,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:05,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 15:14:05,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724749172] [2023-12-09 15:14:05,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:05,785 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 15:14:05,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:05,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 15:14:05,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 15:14:05,787 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 234 [2023-12-09 15:14:05,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 250 transitions, 1024 flow. Second operand has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 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 15:14:05,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:05,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 234 [2023-12-09 15:14:05,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:05,845 INFO L124 PetriNetUnfolderBase]: 54/534 cut-off events. [2023-12-09 15:14:05,845 INFO L125 PetriNetUnfolderBase]: For 501/566 co-relation queries the response was YES. [2023-12-09 15:14:05,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1068 conditions, 534 events. 54/534 cut-off events. For 501/566 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2320 event pairs, 13 based on Foata normal form. 4/489 useless extension candidates. Maximal degree in co-relation 487. Up to 142 conditions per place. [2023-12-09 15:14:05,848 INFO L140 encePairwiseOnDemand]: 231/234 looper letters, 12 selfloop transitions, 2 changer transitions 44/255 dead transitions. [2023-12-09 15:14:05,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 255 transitions, 1112 flow [2023-12-09 15:14:05,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 15:14:05,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 15:14:05,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 655 transitions. [2023-12-09 15:14:05,849 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9330484330484331 [2023-12-09 15:14:05,850 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 655 transitions. [2023-12-09 15:14:05,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 655 transitions. [2023-12-09 15:14:05,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:05,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 655 transitions. [2023-12-09 15:14:05,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 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 15:14:05,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 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 15:14:05,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 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 15:14:05,854 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 22 predicate places. [2023-12-09 15:14:05,854 INFO L500 AbstractCegarLoop]: Abstraction has has 231 places, 255 transitions, 1112 flow [2023-12-09 15:14:05,855 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 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 15:14:05,856 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:05,856 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:05,856 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 15:14:05,856 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 15:14:05,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:05,856 INFO L85 PathProgramCache]: Analyzing trace with hash 181574390, now seen corresponding path program 1 times [2023-12-09 15:14:05,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:05,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929986446] [2023-12-09 15:14:05,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:05,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:05,954 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 15:14:05,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:05,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929986446] [2023-12-09 15:14:05,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929986446] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:05,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:05,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 15:14:05,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635168898] [2023-12-09 15:14:05,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:05,956 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 15:14:05,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:05,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 15:14:05,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 15:14:05,957 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 234 [2023-12-09 15:14:05,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 255 transitions, 1112 flow. Second operand has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 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 15:14:05,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:05,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 234 [2023-12-09 15:14:05,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:06,025 INFO L124 PetriNetUnfolderBase]: 69/620 cut-off events. [2023-12-09 15:14:06,026 INFO L125 PetriNetUnfolderBase]: For 1210/1276 co-relation queries the response was YES. [2023-12-09 15:14:06,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1410 conditions, 620 events. 69/620 cut-off events. For 1210/1276 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2881 event pairs, 14 based on Foata normal form. 7/571 useless extension candidates. Maximal degree in co-relation 592. Up to 206 conditions per place. [2023-12-09 15:14:06,030 INFO L140 encePairwiseOnDemand]: 231/234 looper letters, 16 selfloop transitions, 2 changer transitions 47/261 dead transitions. [2023-12-09 15:14:06,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 261 transitions, 1231 flow [2023-12-09 15:14:06,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 15:14:06,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 15:14:06,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 654 transitions. [2023-12-09 15:14:06,031 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9316239316239316 [2023-12-09 15:14:06,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 654 transitions. [2023-12-09 15:14:06,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 654 transitions. [2023-12-09 15:14:06,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:06,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 654 transitions. [2023-12-09 15:14:06,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 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 15:14:06,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 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 15:14:06,034 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 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 15:14:06,035 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 24 predicate places. [2023-12-09 15:14:06,035 INFO L500 AbstractCegarLoop]: Abstraction has has 233 places, 261 transitions, 1231 flow [2023-12-09 15:14:06,036 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 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 15:14:06,036 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:06,036 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:06,036 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 15:14:06,036 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 15:14:06,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:06,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1543398217, now seen corresponding path program 1 times [2023-12-09 15:14:06,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:06,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887035533] [2023-12-09 15:14:06,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:06,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:06,847 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 15:14:06,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:06,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887035533] [2023-12-09 15:14:06,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887035533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:06,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:06,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-09 15:14:06,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943819317] [2023-12-09 15:14:06,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:06,853 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-09 15:14:06,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:06,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-09 15:14:06,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2023-12-09 15:14:06,858 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 234 [2023-12-09 15:14:06,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 261 transitions, 1231 flow. Second operand has 22 states, 22 states have (on average 125.54545454545455) internal successors, (2762), 22 states have internal predecessors, (2762), 0 states have call successors, (0), 0 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 15:14:06,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:06,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 234 [2023-12-09 15:14:06,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:08,256 INFO L124 PetriNetUnfolderBase]: 292/2292 cut-off events. [2023-12-09 15:14:08,256 INFO L125 PetriNetUnfolderBase]: For 5447/5761 co-relation queries the response was YES. [2023-12-09 15:14:08,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6109 conditions, 2292 events. 292/2292 cut-off events. For 5447/5761 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 19158 event pairs, 76 based on Foata normal form. 9/2026 useless extension candidates. Maximal degree in co-relation 973. Up to 756 conditions per place. [2023-12-09 15:14:08,269 INFO L140 encePairwiseOnDemand]: 197/234 looper letters, 217 selfloop transitions, 30 changer transitions 150/513 dead transitions. [2023-12-09 15:14:08,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 513 transitions, 3891 flow [2023-12-09 15:14:08,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-09 15:14:08,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-12-09 15:14:08,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4775 transitions. [2023-12-09 15:14:08,278 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5515130515130515 [2023-12-09 15:14:08,278 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4775 transitions. [2023-12-09 15:14:08,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4775 transitions. [2023-12-09 15:14:08,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:08,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4775 transitions. [2023-12-09 15:14:08,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 129.05405405405406) internal successors, (4775), 37 states have internal predecessors, (4775), 0 states have call successors, (0), 0 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 15:14:08,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 234.0) internal successors, (8892), 38 states have internal predecessors, (8892), 0 states have call successors, (0), 0 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 15:14:08,298 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 234.0) internal successors, (8892), 38 states have internal predecessors, (8892), 0 states have call successors, (0), 0 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 15:14:08,300 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 60 predicate places. [2023-12-09 15:14:08,300 INFO L500 AbstractCegarLoop]: Abstraction has has 269 places, 513 transitions, 3891 flow [2023-12-09 15:14:08,301 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 125.54545454545455) internal successors, (2762), 22 states have internal predecessors, (2762), 0 states have call successors, (0), 0 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 15:14:08,301 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:08,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:08,301 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 15:14:08,301 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 15:14:08,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:08,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1041499853, now seen corresponding path program 2 times [2023-12-09 15:14:08,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:08,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094984133] [2023-12-09 15:14:08,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:08,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:08,814 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 15:14:08,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:08,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094984133] [2023-12-09 15:14:08,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094984133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:08,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:08,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-09 15:14:08,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519033908] [2023-12-09 15:14:08,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:08,818 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:14:08,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:08,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:14:08,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:14:08,822 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 234 [2023-12-09 15:14:08,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 513 transitions, 3891 flow. Second operand has 20 states, 20 states have (on average 130.7) internal successors, (2614), 20 states have internal predecessors, (2614), 0 states have call successors, (0), 0 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 15:14:08,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:08,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 234 [2023-12-09 15:14:08,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:09,823 INFO L124 PetriNetUnfolderBase]: 294/2250 cut-off events. [2023-12-09 15:14:09,823 INFO L125 PetriNetUnfolderBase]: For 7738/8191 co-relation queries the response was YES. [2023-12-09 15:14:09,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7302 conditions, 2250 events. 294/2250 cut-off events. For 7738/8191 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 18568 event pairs, 85 based on Foata normal form. 9/1998 useless extension candidates. Maximal degree in co-relation 1254. Up to 809 conditions per place. [2023-12-09 15:14:09,834 INFO L140 encePairwiseOnDemand]: 196/234 looper letters, 230 selfloop transitions, 31 changer transitions 185/565 dead transitions. [2023-12-09 15:14:09,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 565 transitions, 5260 flow [2023-12-09 15:14:09,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-09 15:14:09,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-12-09 15:14:09,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4701 transitions. [2023-12-09 15:14:09,843 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.573992673992674 [2023-12-09 15:14:09,843 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4701 transitions. [2023-12-09 15:14:09,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4701 transitions. [2023-12-09 15:14:09,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:09,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4701 transitions. [2023-12-09 15:14:09,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 134.31428571428572) internal successors, (4701), 35 states have internal predecessors, (4701), 0 states have call successors, (0), 0 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 15:14:09,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 234.0) internal successors, (8424), 36 states have internal predecessors, (8424), 0 states have call successors, (0), 0 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 15:14:09,865 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 234.0) internal successors, (8424), 36 states have internal predecessors, (8424), 0 states have call successors, (0), 0 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 15:14:09,865 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 94 predicate places. [2023-12-09 15:14:09,865 INFO L500 AbstractCegarLoop]: Abstraction has has 303 places, 565 transitions, 5260 flow [2023-12-09 15:14:09,866 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 130.7) internal successors, (2614), 20 states have internal predecessors, (2614), 0 states have call successors, (0), 0 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 15:14:09,866 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:09,866 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:09,866 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-09 15:14:09,866 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 15:14:09,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:09,867 INFO L85 PathProgramCache]: Analyzing trace with hash -167489607, now seen corresponding path program 1 times [2023-12-09 15:14:09,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:09,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41436865] [2023-12-09 15:14:09,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:09,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:10,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:10,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:10,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41436865] [2023-12-09 15:14:10,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41436865] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:10,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064307285] [2023-12-09 15:14:10,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:10,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:10,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:10,191 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 15:14:10,224 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 15:14:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:10,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 15:14:10,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:10,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:14:10,925 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 15:14:10,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064307285] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:10,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:14:10,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 14] total 30 [2023-12-09 15:14:10,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299793173] [2023-12-09 15:14:10,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:10,926 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:14:10,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:10,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:14:10,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2023-12-09 15:14:10,928 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 234 [2023-12-09 15:14:10,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 565 transitions, 5260 flow. Second operand has 14 states, 14 states have (on average 132.57142857142858) internal successors, (1856), 14 states have internal predecessors, (1856), 0 states have call successors, (0), 0 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 15:14:10,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:10,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 234 [2023-12-09 15:14:10,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:11,769 INFO L124 PetriNetUnfolderBase]: 375/3089 cut-off events. [2023-12-09 15:14:11,770 INFO L125 PetriNetUnfolderBase]: For 13167/14155 co-relation queries the response was YES. [2023-12-09 15:14:11,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11352 conditions, 3089 events. 375/3089 cut-off events. For 13167/14155 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 28283 event pairs, 109 based on Foata normal form. 5/2729 useless extension candidates. Maximal degree in co-relation 1271. Up to 1099 conditions per place. [2023-12-09 15:14:11,787 INFO L140 encePairwiseOnDemand]: 205/234 looper letters, 308 selfloop transitions, 27 changer transitions 241/696 dead transitions. [2023-12-09 15:14:11,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 696 transitions, 7991 flow [2023-12-09 15:14:11,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-09 15:14:11,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-12-09 15:14:11,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3291 transitions. [2023-12-09 15:14:11,791 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5860042735042735 [2023-12-09 15:14:11,792 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3291 transitions. [2023-12-09 15:14:11,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3291 transitions. [2023-12-09 15:14:11,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:11,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3291 transitions. [2023-12-09 15:14:11,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 137.125) internal successors, (3291), 24 states have internal predecessors, (3291), 0 states have call successors, (0), 0 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 15:14:11,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 234.0) internal successors, (5850), 25 states have internal predecessors, (5850), 0 states have call successors, (0), 0 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 15:14:11,801 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 234.0) internal successors, (5850), 25 states have internal predecessors, (5850), 0 states have call successors, (0), 0 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 15:14:11,802 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 117 predicate places. [2023-12-09 15:14:11,802 INFO L500 AbstractCegarLoop]: Abstraction has has 326 places, 696 transitions, 7991 flow [2023-12-09 15:14:11,802 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 132.57142857142858) internal successors, (1856), 14 states have internal predecessors, (1856), 0 states have call successors, (0), 0 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 15:14:11,802 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:11,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:11,820 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 15:14:12,007 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:12,008 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 15:14:12,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:12,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1960304193, now seen corresponding path program 2 times [2023-12-09 15:14:12,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:12,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016369034] [2023-12-09 15:14:12,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:12,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:12,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:12,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:12,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016369034] [2023-12-09 15:14:12,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016369034] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:12,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607829643] [2023-12-09 15:14:12,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:14:12,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:12,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:12,325 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 15:14:12,348 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 15:14:12,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-09 15:14:12,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:14:12,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-09 15:14:12,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:12,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:14:12,642 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-09 15:14:12,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607829643] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:12,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-09 15:14:12,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [15] total 25 [2023-12-09 15:14:12,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66853421] [2023-12-09 15:14:12,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:12,643 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-09 15:14:12,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:12,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-09 15:14:12,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2023-12-09 15:14:12,645 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 234 [2023-12-09 15:14:12,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 696 transitions, 7991 flow. Second operand has 12 states, 12 states have (on average 155.83333333333334) internal successors, (1870), 12 states have internal predecessors, (1870), 0 states have call successors, (0), 0 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 15:14:12,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:12,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 234 [2023-12-09 15:14:12,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:13,499 INFO L124 PetriNetUnfolderBase]: 392/3565 cut-off events. [2023-12-09 15:14:13,499 INFO L125 PetriNetUnfolderBase]: For 19634/20902 co-relation queries the response was YES. [2023-12-09 15:14:13,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15591 conditions, 3565 events. 392/3565 cut-off events. For 19634/20902 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 34216 event pairs, 102 based on Foata normal form. 11/3172 useless extension candidates. Maximal degree in co-relation 1406. Up to 1455 conditions per place. [2023-12-09 15:14:13,517 INFO L140 encePairwiseOnDemand]: 212/234 looper letters, 346 selfloop transitions, 4 changer transitions 335/862 dead transitions. [2023-12-09 15:14:13,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 862 transitions, 11652 flow [2023-12-09 15:14:13,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-09 15:14:13,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-12-09 15:14:13,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3140 transitions. [2023-12-09 15:14:13,520 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6709401709401709 [2023-12-09 15:14:13,520 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3140 transitions. [2023-12-09 15:14:13,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3140 transitions. [2023-12-09 15:14:13,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:13,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3140 transitions. [2023-12-09 15:14:13,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 157.0) internal successors, (3140), 20 states have internal predecessors, (3140), 0 states have call successors, (0), 0 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 15:14:13,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 234.0) internal successors, (4914), 21 states have internal predecessors, (4914), 0 states have call successors, (0), 0 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 15:14:13,528 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 234.0) internal successors, (4914), 21 states have internal predecessors, (4914), 0 states have call successors, (0), 0 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 15:14:13,529 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 136 predicate places. [2023-12-09 15:14:13,529 INFO L500 AbstractCegarLoop]: Abstraction has has 345 places, 862 transitions, 11652 flow [2023-12-09 15:14:13,529 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 155.83333333333334) internal successors, (1870), 12 states have internal predecessors, (1870), 0 states have call successors, (0), 0 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 15:14:13,529 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:13,529 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:13,536 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 15:14:13,734 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,SelfDestructingSolverStorable8 [2023-12-09 15:14:13,734 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 15:14:13,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:13,735 INFO L85 PathProgramCache]: Analyzing trace with hash 163563442, now seen corresponding path program 1 times [2023-12-09 15:14:13,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:13,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774837209] [2023-12-09 15:14:13,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:13,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:14,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:14,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:14,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774837209] [2023-12-09 15:14:14,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774837209] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:14,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361314740] [2023-12-09 15:14:14,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:14,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:14,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:14,026 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 15:14:14,028 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 15:14:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:14,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 15:14:14,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:14,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:14,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:14:14,666 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 15:14:14,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361314740] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:14,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:14:14,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 14] total 30 [2023-12-09 15:14:14,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955162020] [2023-12-09 15:14:14,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:14,667 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:14:14,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:14,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:14:14,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2023-12-09 15:14:14,669 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 234 [2023-12-09 15:14:14,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 862 transitions, 11652 flow. Second operand has 14 states, 14 states have (on average 132.57142857142858) internal successors, (1856), 14 states have internal predecessors, (1856), 0 states have call successors, (0), 0 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 15:14:14,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:14,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 234 [2023-12-09 15:14:14,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:15,681 INFO L124 PetriNetUnfolderBase]: 389/3512 cut-off events. [2023-12-09 15:14:15,681 INFO L125 PetriNetUnfolderBase]: For 24916/26503 co-relation queries the response was YES. [2023-12-09 15:14:15,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17266 conditions, 3512 events. 389/3512 cut-off events. For 24916/26503 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 33590 event pairs, 88 based on Foata normal form. 5/3127 useless extension candidates. Maximal degree in co-relation 1692. Up to 1450 conditions per place. [2023-12-09 15:14:15,704 INFO L140 encePairwiseOnDemand]: 202/234 looper letters, 398 selfloop transitions, 29 changer transitions 353/900 dead transitions. [2023-12-09 15:14:15,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 900 transitions, 13807 flow [2023-12-09 15:14:15,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-09 15:14:15,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-12-09 15:14:15,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3284 transitions. [2023-12-09 15:14:15,707 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5847578347578347 [2023-12-09 15:14:15,707 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3284 transitions. [2023-12-09 15:14:15,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3284 transitions. [2023-12-09 15:14:15,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:15,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3284 transitions. [2023-12-09 15:14:15,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 136.83333333333334) internal successors, (3284), 24 states have internal predecessors, (3284), 0 states have call successors, (0), 0 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 15:14:15,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 234.0) internal successors, (5850), 25 states have internal predecessors, (5850), 0 states have call successors, (0), 0 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 15:14:15,716 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 234.0) internal successors, (5850), 25 states have internal predecessors, (5850), 0 states have call successors, (0), 0 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 15:14:15,717 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 159 predicate places. [2023-12-09 15:14:15,717 INFO L500 AbstractCegarLoop]: Abstraction has has 368 places, 900 transitions, 13807 flow [2023-12-09 15:14:15,717 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 132.57142857142858) internal successors, (1856), 14 states have internal predecessors, (1856), 0 states have call successors, (0), 0 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 15:14:15,717 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:15,717 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:15,722 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 15:14:15,922 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:15,922 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 15:14:15,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:15,923 INFO L85 PathProgramCache]: Analyzing trace with hash 753962799, now seen corresponding path program 1 times [2023-12-09 15:14:15,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:15,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533113997] [2023-12-09 15:14:15,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:15,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:16,000 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 15:14:16,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:16,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533113997] [2023-12-09 15:14:16,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533113997] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:16,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:16,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:14:16,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643002395] [2023-12-09 15:14:16,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:16,001 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:14:16,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:16,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:14:16,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:14:16,003 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 234 [2023-12-09 15:14:16,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 900 transitions, 13807 flow. Second operand has 7 states, 7 states have (on average 177.28571428571428) internal successors, (1241), 7 states have internal predecessors, (1241), 0 states have call successors, (0), 0 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 15:14:16,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:16,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 234 [2023-12-09 15:14:16,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:16,576 INFO L124 PetriNetUnfolderBase]: 390/2853 cut-off events. [2023-12-09 15:14:16,577 INFO L125 PetriNetUnfolderBase]: For 25665/27358 co-relation queries the response was YES. [2023-12-09 15:14:16,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14462 conditions, 2853 events. 390/2853 cut-off events. For 25665/27358 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 25170 event pairs, 140 based on Foata normal form. 18/2561 useless extension candidates. Maximal degree in co-relation 2109. Up to 1079 conditions per place. [2023-12-09 15:14:16,590 INFO L140 encePairwiseOnDemand]: 221/234 looper letters, 149 selfloop transitions, 14 changer transitions 331/778 dead transitions. [2023-12-09 15:14:16,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 778 transitions, 11993 flow [2023-12-09 15:14:16,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:14:16,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:14:16,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1809 transitions. [2023-12-09 15:14:16,593 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7730769230769231 [2023-12-09 15:14:16,593 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1809 transitions. [2023-12-09 15:14:16,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1809 transitions. [2023-12-09 15:14:16,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:16,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1809 transitions. [2023-12-09 15:14:16,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 180.9) internal successors, (1809), 10 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:16,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 234.0) internal successors, (2574), 11 states have internal predecessors, (2574), 0 states have call successors, (0), 0 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 15:14:16,599 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 234.0) internal successors, (2574), 11 states have internal predecessors, (2574), 0 states have call successors, (0), 0 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 15:14:16,599 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 168 predicate places. [2023-12-09 15:14:16,599 INFO L500 AbstractCegarLoop]: Abstraction has has 377 places, 778 transitions, 11993 flow [2023-12-09 15:14:16,599 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 177.28571428571428) internal successors, (1241), 7 states have internal predecessors, (1241), 0 states have call successors, (0), 0 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 15:14:16,599 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:16,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:16,600 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-09 15:14:16,600 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 15:14:16,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:16,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1014762335, now seen corresponding path program 1 times [2023-12-09 15:14:16,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:16,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169372892] [2023-12-09 15:14:16,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:16,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:16,694 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 15:14:16,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:16,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169372892] [2023-12-09 15:14:16,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169372892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:16,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:16,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:14:16,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640519558] [2023-12-09 15:14:16,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:16,695 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:14:16,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:16,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:14:16,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:14:16,696 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 234 [2023-12-09 15:14:16,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 778 transitions, 11993 flow. Second operand has 7 states, 7 states have (on average 177.28571428571428) internal successors, (1241), 7 states have internal predecessors, (1241), 0 states have call successors, (0), 0 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 15:14:16,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:16,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 234 [2023-12-09 15:14:16,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:17,233 INFO L124 PetriNetUnfolderBase]: 494/2871 cut-off events. [2023-12-09 15:14:17,234 INFO L125 PetriNetUnfolderBase]: For 36804/37456 co-relation queries the response was YES. [2023-12-09 15:14:17,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15294 conditions, 2871 events. 494/2871 cut-off events. For 36804/37456 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 24735 event pairs, 272 based on Foata normal form. 2/2548 useless extension candidates. Maximal degree in co-relation 2944. Up to 1025 conditions per place. [2023-12-09 15:14:17,246 INFO L140 encePairwiseOnDemand]: 221/234 looper letters, 95 selfloop transitions, 8 changer transitions 387/724 dead transitions. [2023-12-09 15:14:17,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 724 transitions, 11513 flow [2023-12-09 15:14:17,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:14:17,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:14:17,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1807 transitions. [2023-12-09 15:14:17,248 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7722222222222223 [2023-12-09 15:14:17,249 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1807 transitions. [2023-12-09 15:14:17,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1807 transitions. [2023-12-09 15:14:17,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:17,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1807 transitions. [2023-12-09 15:14:17,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 180.7) internal successors, (1807), 10 states have internal predecessors, (1807), 0 states have call successors, (0), 0 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 15:14:17,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 234.0) internal successors, (2574), 11 states have internal predecessors, (2574), 0 states have call successors, (0), 0 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 15:14:17,253 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 234.0) internal successors, (2574), 11 states have internal predecessors, (2574), 0 states have call successors, (0), 0 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 15:14:17,253 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 177 predicate places. [2023-12-09 15:14:17,254 INFO L500 AbstractCegarLoop]: Abstraction has has 386 places, 724 transitions, 11513 flow [2023-12-09 15:14:17,254 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 177.28571428571428) internal successors, (1241), 7 states have internal predecessors, (1241), 0 states have call successors, (0), 0 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 15:14:17,254 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:17,254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:17,254 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-09 15:14:17,254 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 15:14:17,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:17,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1284761046, now seen corresponding path program 1 times [2023-12-09 15:14:17,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:17,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509472536] [2023-12-09 15:14:17,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:17,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:17,429 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 15:14:17,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:17,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509472536] [2023-12-09 15:14:17,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509472536] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:17,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603137439] [2023-12-09 15:14:17,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:17,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:17,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:17,431 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 15:14:17,458 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 15:14:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:17,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-09 15:14:17,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:17,695 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 15:14:17,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:14:17,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:17,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603137439] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:17,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:14:17,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2023-12-09 15:14:17,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123833961] [2023-12-09 15:14:17,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:17,952 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:14:17,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:17,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:14:17,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2023-12-09 15:14:17,954 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 234 [2023-12-09 15:14:17,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 724 transitions, 11513 flow. Second operand has 11 states, 11 states have (on average 174.0) internal successors, (1914), 11 states have internal predecessors, (1914), 0 states have call successors, (0), 0 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 15:14:17,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:17,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 234 [2023-12-09 15:14:17,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:18,739 INFO L124 PetriNetUnfolderBase]: 499/2844 cut-off events. [2023-12-09 15:14:18,739 INFO L125 PetriNetUnfolderBase]: For 43086/44133 co-relation queries the response was YES. [2023-12-09 15:14:18,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16173 conditions, 2844 events. 499/2844 cut-off events. For 43086/44133 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 24172 event pairs, 184 based on Foata normal form. 33/2557 useless extension candidates. Maximal degree in co-relation 3386. Up to 1024 conditions per place. [2023-12-09 15:14:18,758 INFO L140 encePairwiseOnDemand]: 213/234 looper letters, 105 selfloop transitions, 21 changer transitions 387/745 dead transitions. [2023-12-09 15:14:18,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 745 transitions, 12323 flow [2023-12-09 15:14:18,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-09 15:14:18,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-12-09 15:14:18,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2667 transitions. [2023-12-09 15:14:18,762 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7598290598290598 [2023-12-09 15:14:18,762 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2667 transitions. [2023-12-09 15:14:18,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2667 transitions. [2023-12-09 15:14:18,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:18,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2667 transitions. [2023-12-09 15:14:18,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 177.8) internal successors, (2667), 15 states have internal predecessors, (2667), 0 states have call successors, (0), 0 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 15:14:18,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 234.0) internal successors, (3744), 16 states have internal predecessors, (3744), 0 states have call successors, (0), 0 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 15:14:18,770 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 234.0) internal successors, (3744), 16 states have internal predecessors, (3744), 0 states have call successors, (0), 0 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 15:14:18,771 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 191 predicate places. [2023-12-09 15:14:18,771 INFO L500 AbstractCegarLoop]: Abstraction has has 400 places, 745 transitions, 12323 flow [2023-12-09 15:14:18,771 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 174.0) internal successors, (1914), 11 states have internal predecessors, (1914), 0 states have call successors, (0), 0 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 15:14:18,771 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:18,771 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:18,780 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 15:14:18,976 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:18,977 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 15:14:18,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:18,978 INFO L85 PathProgramCache]: Analyzing trace with hash -940268715, now seen corresponding path program 1 times [2023-12-09 15:14:18,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:18,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284112036] [2023-12-09 15:14:18,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:18,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:14:19,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:19,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284112036] [2023-12-09 15:14:19,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284112036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:19,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:19,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:14:19,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332414821] [2023-12-09 15:14:19,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:19,061 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:14:19,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:19,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:14:19,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:14:19,063 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 234 [2023-12-09 15:14:19,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 745 transitions, 12323 flow. Second operand has 7 states, 7 states have (on average 177.85714285714286) internal successors, (1245), 7 states have internal predecessors, (1245), 0 states have call successors, (0), 0 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 15:14:19,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:19,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 234 [2023-12-09 15:14:19,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:19,589 INFO L124 PetriNetUnfolderBase]: 397/2437 cut-off events. [2023-12-09 15:14:19,590 INFO L125 PetriNetUnfolderBase]: For 39205/40126 co-relation queries the response was YES. [2023-12-09 15:14:19,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14055 conditions, 2437 events. 397/2437 cut-off events. For 39205/40126 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 19383 event pairs, 132 based on Foata normal form. 10/2229 useless extension candidates. Maximal degree in co-relation 3773. Up to 784 conditions per place. [2023-12-09 15:14:19,605 INFO L140 encePairwiseOnDemand]: 221/234 looper letters, 91 selfloop transitions, 14 changer transitions 388/698 dead transitions. [2023-12-09 15:14:19,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 698 transitions, 11881 flow [2023-12-09 15:14:19,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:14:19,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:14:19,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1794 transitions. [2023-12-09 15:14:19,608 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2023-12-09 15:14:19,608 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1794 transitions. [2023-12-09 15:14:19,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1794 transitions. [2023-12-09 15:14:19,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:19,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1794 transitions. [2023-12-09 15:14:19,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 179.4) internal successors, (1794), 10 states have internal predecessors, (1794), 0 states have call successors, (0), 0 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 15:14:19,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 234.0) internal successors, (2574), 11 states have internal predecessors, (2574), 0 states have call successors, (0), 0 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 15:14:19,613 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 234.0) internal successors, (2574), 11 states have internal predecessors, (2574), 0 states have call successors, (0), 0 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 15:14:19,614 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 200 predicate places. [2023-12-09 15:14:19,614 INFO L500 AbstractCegarLoop]: Abstraction has has 409 places, 698 transitions, 11881 flow [2023-12-09 15:14:19,616 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 177.85714285714286) internal successors, (1245), 7 states have internal predecessors, (1245), 0 states have call successors, (0), 0 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 15:14:19,616 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:19,616 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:19,616 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-09 15:14:19,616 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 15:14:19,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:19,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1446326179, now seen corresponding path program 1 times [2023-12-09 15:14:19,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:19,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735866623] [2023-12-09 15:14:19,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:19,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:19,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:14:19,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:19,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735866623] [2023-12-09 15:14:19,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735866623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:19,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:19,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:14:19,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394198486] [2023-12-09 15:14:19,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:19,760 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:14:19,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:19,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:14:19,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:14:19,762 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 234 [2023-12-09 15:14:19,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 698 transitions, 11881 flow. Second operand has 7 states, 7 states have (on average 177.85714285714286) internal successors, (1245), 7 states have internal predecessors, (1245), 0 states have call successors, (0), 0 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 15:14:19,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:19,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 234 [2023-12-09 15:14:19,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:20,161 INFO L124 PetriNetUnfolderBase]: 331/2027 cut-off events. [2023-12-09 15:14:20,161 INFO L125 PetriNetUnfolderBase]: For 39744/40965 co-relation queries the response was YES. [2023-12-09 15:14:20,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12714 conditions, 2027 events. 331/2027 cut-off events. For 39744/40965 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 14983 event pairs, 105 based on Foata normal form. 38/1876 useless extension candidates. Maximal degree in co-relation 3825. Up to 669 conditions per place. [2023-12-09 15:14:20,174 INFO L140 encePairwiseOnDemand]: 221/234 looper letters, 73 selfloop transitions, 8 changer transitions 397/652 dead transitions. [2023-12-09 15:14:20,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 652 transitions, 11398 flow [2023-12-09 15:14:20,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:14:20,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:14:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1792 transitions. [2023-12-09 15:14:20,176 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7658119658119659 [2023-12-09 15:14:20,176 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1792 transitions. [2023-12-09 15:14:20,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1792 transitions. [2023-12-09 15:14:20,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:20,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1792 transitions. [2023-12-09 15:14:20,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 179.2) internal successors, (1792), 10 states have internal predecessors, (1792), 0 states have call successors, (0), 0 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 15:14:20,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 234.0) internal successors, (2574), 11 states have internal predecessors, (2574), 0 states have call successors, (0), 0 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 15:14:20,180 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 234.0) internal successors, (2574), 11 states have internal predecessors, (2574), 0 states have call successors, (0), 0 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 15:14:20,181 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 208 predicate places. [2023-12-09 15:14:20,181 INFO L500 AbstractCegarLoop]: Abstraction has has 417 places, 652 transitions, 11398 flow [2023-12-09 15:14:20,181 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 177.85714285714286) internal successors, (1245), 7 states have internal predecessors, (1245), 0 states have call successors, (0), 0 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 15:14:20,181 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:20,181 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:20,181 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-09 15:14:20,182 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 15:14:20,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:20,182 INFO L85 PathProgramCache]: Analyzing trace with hash 2073281394, now seen corresponding path program 1 times [2023-12-09 15:14:20,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:20,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299137413] [2023-12-09 15:14:20,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:20,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:20,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:14:20,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:20,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299137413] [2023-12-09 15:14:20,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299137413] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:20,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036034324] [2023-12-09 15:14:20,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:20,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:20,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:20,333 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 15:14:20,336 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 15:14:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:20,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-09 15:14:20,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:20,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:14:20,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:14:20,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:14:20,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036034324] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:20,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:14:20,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2023-12-09 15:14:20,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875031866] [2023-12-09 15:14:20,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:20,879 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:14:20,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:20,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:14:20,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2023-12-09 15:14:20,881 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 234 [2023-12-09 15:14:20,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 652 transitions, 11398 flow. Second operand has 11 states, 11 states have (on average 174.0909090909091) internal successors, (1915), 11 states have internal predecessors, (1915), 0 states have call successors, (0), 0 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 15:14:20,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:20,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 234 [2023-12-09 15:14:20,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:21,434 INFO L124 PetriNetUnfolderBase]: 343/2092 cut-off events. [2023-12-09 15:14:21,435 INFO L125 PetriNetUnfolderBase]: For 45222/46167 co-relation queries the response was YES. [2023-12-09 15:14:21,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13643 conditions, 2092 events. 343/2092 cut-off events. For 45222/46167 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 15447 event pairs, 95 based on Foata normal form. 9/1931 useless extension candidates. Maximal degree in co-relation 4318. Up to 670 conditions per place. [2023-12-09 15:14:21,444 INFO L140 encePairwiseOnDemand]: 213/234 looper letters, 80 selfloop transitions, 16 changer transitions 397/666 dead transitions. [2023-12-09 15:14:21,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 666 transitions, 12272 flow [2023-12-09 15:14:21,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-09 15:14:21,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-12-09 15:14:21,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2484 transitions. [2023-12-09 15:14:21,447 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7582417582417582 [2023-12-09 15:14:21,447 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2484 transitions. [2023-12-09 15:14:21,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2484 transitions. [2023-12-09 15:14:21,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:21,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2484 transitions. [2023-12-09 15:14:21,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 177.42857142857142) internal successors, (2484), 14 states have internal predecessors, (2484), 0 states have call successors, (0), 0 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 15:14:21,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 234.0) internal successors, (3510), 15 states have internal predecessors, (3510), 0 states have call successors, (0), 0 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 15:14:21,454 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 234.0) internal successors, (3510), 15 states have internal predecessors, (3510), 0 states have call successors, (0), 0 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 15:14:21,454 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 221 predicate places. [2023-12-09 15:14:21,454 INFO L500 AbstractCegarLoop]: Abstraction has has 430 places, 666 transitions, 12272 flow [2023-12-09 15:14:21,455 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 174.0909090909091) internal successors, (1915), 11 states have internal predecessors, (1915), 0 states have call successors, (0), 0 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 15:14:21,455 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:21,455 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:21,459 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 15:14:21,659 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,SelfDestructingSolverStorable15 [2023-12-09 15:14:21,660 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 15:14:21,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:21,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1149737618, now seen corresponding path program 1 times [2023-12-09 15:14:21,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:21,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769854611] [2023-12-09 15:14:21,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:21,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:22,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:14:22,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:22,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769854611] [2023-12-09 15:14:22,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769854611] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:22,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118581370] [2023-12-09 15:14:22,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:22,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:22,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:22,043 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 15:14:22,064 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 15:14:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:22,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-09 15:14:22,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:22,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:14:22,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:14:23,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:14:23,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118581370] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:14:23,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:14:23,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2023-12-09 15:14:23,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803051982] [2023-12-09 15:14:23,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:14:23,068 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-09 15:14:23,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:23,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-09 15:14:23,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1551, Unknown=0, NotChecked=0, Total=1806 [2023-12-09 15:14:23,074 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 234 [2023-12-09 15:14:23,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 666 transitions, 12272 flow. Second operand has 43 states, 43 states have (on average 129.0) internal successors, (5547), 43 states have internal predecessors, (5547), 0 states have call successors, (0), 0 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 15:14:23,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:23,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 234 [2023-12-09 15:14:23,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:25,146 INFO L124 PetriNetUnfolderBase]: 842/4725 cut-off events. [2023-12-09 15:14:25,146 INFO L125 PetriNetUnfolderBase]: For 113134/115386 co-relation queries the response was YES. [2023-12-09 15:14:25,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33532 conditions, 4725 events. 842/4725 cut-off events. For 113134/115386 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 44109 event pairs, 254 based on Foata normal form. 57/4342 useless extension candidates. Maximal degree in co-relation 4760. Up to 1843 conditions per place. [2023-12-09 15:14:25,176 INFO L140 encePairwiseOnDemand]: 200/234 looper letters, 343 selfloop transitions, 45 changer transitions 658/1165 dead transitions. [2023-12-09 15:14:25,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 1165 transitions, 25494 flow [2023-12-09 15:14:25,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-09 15:14:25,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-12-09 15:14:25,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 5900 transitions. [2023-12-09 15:14:25,190 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.560303893637227 [2023-12-09 15:14:25,191 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 5900 transitions. [2023-12-09 15:14:25,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 5900 transitions. [2023-12-09 15:14:25,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:25,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 5900 transitions. [2023-12-09 15:14:25,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 131.11111111111111) internal successors, (5900), 45 states have internal predecessors, (5900), 0 states have call successors, (0), 0 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 15:14:25,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 234.0) internal successors, (10764), 46 states have internal predecessors, (10764), 0 states have call successors, (0), 0 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 15:14:25,286 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 234.0) internal successors, (10764), 46 states have internal predecessors, (10764), 0 states have call successors, (0), 0 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 15:14:25,287 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 265 predicate places. [2023-12-09 15:14:25,287 INFO L500 AbstractCegarLoop]: Abstraction has has 474 places, 1165 transitions, 25494 flow [2023-12-09 15:14:25,288 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 129.0) internal successors, (5547), 43 states have internal predecessors, (5547), 0 states have call successors, (0), 0 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 15:14:25,288 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:25,288 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:25,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-09 15:14:25,492 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-09 15:14:25,493 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 15:14:25,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:25,493 INFO L85 PathProgramCache]: Analyzing trace with hash -568084726, now seen corresponding path program 1 times [2023-12-09 15:14:25,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:25,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386290579] [2023-12-09 15:14:25,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:25,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:14:26,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:26,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386290579] [2023-12-09 15:14:26,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386290579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:26,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:26,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-09 15:14:26,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587018654] [2023-12-09 15:14:26,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:26,108 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:14:26,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:26,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:14:26,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:14:26,111 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 234 [2023-12-09 15:14:26,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 1165 transitions, 25494 flow. Second operand has 20 states, 20 states have (on average 156.8) internal successors, (3136), 20 states have internal predecessors, (3136), 0 states have call successors, (0), 0 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 15:14:26,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:26,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 234 [2023-12-09 15:14:26,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:31,771 INFO L124 PetriNetUnfolderBase]: 7721/19597 cut-off events. [2023-12-09 15:14:31,771 INFO L125 PetriNetUnfolderBase]: For 280678/283529 co-relation queries the response was YES. [2023-12-09 15:14:31,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104311 conditions, 19597 events. 7721/19597 cut-off events. For 280678/283529 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 197417 event pairs, 2749 based on Foata normal form. 39/18099 useless extension candidates. Maximal degree in co-relation 26474. Up to 6836 conditions per place. [2023-12-09 15:14:31,902 INFO L140 encePairwiseOnDemand]: 203/234 looper letters, 462 selfloop transitions, 50 changer transitions 664/1491 dead transitions. [2023-12-09 15:14:31,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 1491 transitions, 33056 flow [2023-12-09 15:14:31,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-09 15:14:31,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-12-09 15:14:31,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4564 transitions. [2023-12-09 15:14:31,905 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6965811965811965 [2023-12-09 15:14:31,905 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4564 transitions. [2023-12-09 15:14:31,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4564 transitions. [2023-12-09 15:14:31,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:31,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4564 transitions. [2023-12-09 15:14:31,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 163.0) internal successors, (4564), 28 states have internal predecessors, (4564), 0 states have call successors, (0), 0 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 15:14:31,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 234.0) internal successors, (6786), 29 states have internal predecessors, (6786), 0 states have call successors, (0), 0 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 15:14:31,915 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 234.0) internal successors, (6786), 29 states have internal predecessors, (6786), 0 states have call successors, (0), 0 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 15:14:31,916 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 292 predicate places. [2023-12-09 15:14:31,916 INFO L500 AbstractCegarLoop]: Abstraction has has 501 places, 1491 transitions, 33056 flow [2023-12-09 15:14:31,916 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 156.8) internal successors, (3136), 20 states have internal predecessors, (3136), 0 states have call successors, (0), 0 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 15:14:31,916 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:31,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:31,917 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-09 15:14:31,917 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 15:14:31,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:31,917 INFO L85 PathProgramCache]: Analyzing trace with hash -167221438, now seen corresponding path program 2 times [2023-12-09 15:14:31,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:31,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369979048] [2023-12-09 15:14:31,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:31,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:32,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:14:32,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:32,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369979048] [2023-12-09 15:14:32,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369979048] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:32,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328525325] [2023-12-09 15:14:32,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:14:32,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:32,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:32,387 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 15:14:32,389 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 15:14:32,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:14:32,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:14:32,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-09 15:14:32,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:33,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-09 15:14:33,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:14:33,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:14:33,465 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-12-09 15:14:33,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2023-12-09 15:14:33,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:14:33,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:14:33,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:14:33,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328525325] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:14:33,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:14:33,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 9] total 47 [2023-12-09 15:14:33,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033327625] [2023-12-09 15:14:33,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:14:33,653 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-09 15:14:33,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:33,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-09 15:14:33,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1963, Unknown=0, NotChecked=0, Total=2162 [2023-12-09 15:14:33,661 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 234 [2023-12-09 15:14:33,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 1491 transitions, 33056 flow. Second operand has 47 states, 47 states have (on average 138.91489361702128) internal successors, (6529), 47 states have internal predecessors, (6529), 0 states have call successors, (0), 0 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 15:14:33,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:33,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 234 [2023-12-09 15:14:33,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:51,577 INFO L124 PetriNetUnfolderBase]: 22191/50887 cut-off events. [2023-12-09 15:14:51,577 INFO L125 PetriNetUnfolderBase]: For 600080/605730 co-relation queries the response was YES. [2023-12-09 15:14:51,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281291 conditions, 50887 events. 22191/50887 cut-off events. For 600080/605730 co-relation queries the response was YES. Maximal size of possible extension queue 1700. Compared 573901 event pairs, 4606 based on Foata normal form. 158/47046 useless extension candidates. Maximal degree in co-relation 72733. Up to 18730 conditions per place. [2023-12-09 15:14:52,024 INFO L140 encePairwiseOnDemand]: 191/234 looper letters, 1535 selfloop transitions, 221 changer transitions 716/2749 dead transitions. [2023-12-09 15:14:52,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 2749 transitions, 59634 flow [2023-12-09 15:14:52,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-09 15:14:52,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-12-09 15:14:52,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 6394 transitions. [2023-12-09 15:14:52,029 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.621017871017871 [2023-12-09 15:14:52,029 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 6394 transitions. [2023-12-09 15:14:52,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 6394 transitions. [2023-12-09 15:14:52,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:52,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 6394 transitions. [2023-12-09 15:14:52,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 145.3181818181818) internal successors, (6394), 44 states have internal predecessors, (6394), 0 states have call successors, (0), 0 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 15:14:52,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 234.0) internal successors, (10530), 45 states have internal predecessors, (10530), 0 states have call successors, (0), 0 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 15:14:52,041 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 234.0) internal successors, (10530), 45 states have internal predecessors, (10530), 0 states have call successors, (0), 0 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 15:14:52,042 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 335 predicate places. [2023-12-09 15:14:52,042 INFO L500 AbstractCegarLoop]: Abstraction has has 544 places, 2749 transitions, 59634 flow [2023-12-09 15:14:52,043 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 138.91489361702128) internal successors, (6529), 47 states have internal predecessors, (6529), 0 states have call successors, (0), 0 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 15:14:52,043 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:52,043 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:52,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-09 15:14:52,247 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:52,248 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 15:14:52,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:52,249 INFO L85 PathProgramCache]: Analyzing trace with hash 498577376, now seen corresponding path program 3 times [2023-12-09 15:14:52,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:52,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901616266] [2023-12-09 15:14:52,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:52,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:52,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:14:52,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:52,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901616266] [2023-12-09 15:14:52,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901616266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:52,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:52,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-09 15:14:52,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541756056] [2023-12-09 15:14:52,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:52,741 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:14:52,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:52,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:14:52,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:14:52,743 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 234 [2023-12-09 15:14:52,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 2749 transitions, 59634 flow. Second operand has 20 states, 20 states have (on average 156.8) internal successors, (3136), 20 states have internal predecessors, (3136), 0 states have call successors, (0), 0 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 15:14:52,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:52,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 234 [2023-12-09 15:14:52,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:15:20,225 INFO L124 PetriNetUnfolderBase]: 26201/59474 cut-off events. [2023-12-09 15:15:20,225 INFO L125 PetriNetUnfolderBase]: For 727709/736869 co-relation queries the response was YES. [2023-12-09 15:15:20,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365172 conditions, 59474 events. 26201/59474 cut-off events. For 727709/736869 co-relation queries the response was YES. Maximal size of possible extension queue 2037. Compared 682812 event pairs, 4717 based on Foata normal form. 258/55120 useless extension candidates. Maximal degree in co-relation 96649. Up to 24644 conditions per place. [2023-12-09 15:15:20,913 INFO L140 encePairwiseOnDemand]: 200/234 looper letters, 2034 selfloop transitions, 181 changer transitions 717/3248 dead transitions. [2023-12-09 15:15:20,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 3248 transitions, 74129 flow [2023-12-09 15:15:20,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-09 15:15:20,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-12-09 15:15:20,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 5274 transitions. [2023-12-09 15:15:20,917 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7043269230769231 [2023-12-09 15:15:20,917 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 5274 transitions. [2023-12-09 15:15:20,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 5274 transitions. [2023-12-09 15:15:20,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:15:20,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 5274 transitions. [2023-12-09 15:15:20,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 164.8125) internal successors, (5274), 32 states have internal predecessors, (5274), 0 states have call successors, (0), 0 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 15:15:20,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 234.0) internal successors, (7722), 33 states have internal predecessors, (7722), 0 states have call successors, (0), 0 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 15:15:20,927 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 234.0) internal successors, (7722), 33 states have internal predecessors, (7722), 0 states have call successors, (0), 0 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 15:15:20,927 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 366 predicate places. [2023-12-09 15:15:20,927 INFO L500 AbstractCegarLoop]: Abstraction has has 575 places, 3248 transitions, 74129 flow [2023-12-09 15:15:20,927 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 156.8) internal successors, (3136), 20 states have internal predecessors, (3136), 0 states have call successors, (0), 0 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 15:15:20,927 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:15:20,927 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:20,928 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-09 15:15:20,928 INFO L425 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:15:20,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:15:20,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1216752642, now seen corresponding path program 4 times [2023-12-09 15:15:20,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:15:20,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059252687] [2023-12-09 15:15:20,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:15:20,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:15:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:15:21,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:15:21,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:15:21,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059252687] [2023-12-09 15:15:21,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059252687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:15:21,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:15:21,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-09 15:15:21,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107744877] [2023-12-09 15:15:21,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:15:21,433 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:15:21,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:15:21,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:15:21,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:15:21,436 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 234 [2023-12-09 15:15:21,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 3248 transitions, 74129 flow. Second operand has 20 states, 20 states have (on average 156.8) internal successors, (3136), 20 states have internal predecessors, (3136), 0 states have call successors, (0), 0 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 15:15:21,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:15:21,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 234 [2023-12-09 15:15:21,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:15:53,960 INFO L124 PetriNetUnfolderBase]: 26540/60145 cut-off events. [2023-12-09 15:15:53,960 INFO L125 PetriNetUnfolderBase]: For 774016/786161 co-relation queries the response was YES. [2023-12-09 15:15:54,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411645 conditions, 60145 events. 26540/60145 cut-off events. For 774016/786161 co-relation queries the response was YES. Maximal size of possible extension queue 2076. Compared 690674 event pairs, 4698 based on Foata normal form. 252/55766 useless extension candidates. Maximal degree in co-relation 111610. Up to 28127 conditions per place. [2023-12-09 15:15:54,674 INFO L140 encePairwiseOnDemand]: 199/234 looper letters, 2109 selfloop transitions, 183 changer transitions 718/3325 dead transitions. [2023-12-09 15:15:54,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 3325 transitions, 80913 flow [2023-12-09 15:15:54,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-09 15:15:54,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-12-09 15:15:54,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4428 transitions. [2023-12-09 15:15:54,677 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7008547008547008 [2023-12-09 15:15:54,677 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4428 transitions. [2023-12-09 15:15:54,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4428 transitions. [2023-12-09 15:15:54,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:15:54,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4428 transitions. [2023-12-09 15:15:54,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 164.0) internal successors, (4428), 27 states have internal predecessors, (4428), 0 states have call successors, (0), 0 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 15:15:54,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 234.0) internal successors, (6552), 28 states have internal predecessors, (6552), 0 states have call successors, (0), 0 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 15:15:54,686 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 234.0) internal successors, (6552), 28 states have internal predecessors, (6552), 0 states have call successors, (0), 0 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 15:15:54,686 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 392 predicate places. [2023-12-09 15:15:54,686 INFO L500 AbstractCegarLoop]: Abstraction has has 601 places, 3325 transitions, 80913 flow [2023-12-09 15:15:54,687 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 156.8) internal successors, (3136), 20 states have internal predecessors, (3136), 0 states have call successors, (0), 0 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 15:15:54,687 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:15:54,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:54,687 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-09 15:15:54,687 INFO L425 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:15:54,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:15:54,687 INFO L85 PathProgramCache]: Analyzing trace with hash 702758030, now seen corresponding path program 5 times [2023-12-09 15:15:54,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:15:54,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492679471] [2023-12-09 15:15:54,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:15:54,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:15:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:15:55,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:15:55,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:15:55,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492679471] [2023-12-09 15:15:55,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492679471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:15:55,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:15:55,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:15:55,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264704598] [2023-12-09 15:15:55,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:15:55,153 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:15:55,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:15:55,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:15:55,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:15:55,155 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 234 [2023-12-09 15:15:55,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 3325 transitions, 80913 flow. Second operand has 19 states, 19 states have (on average 156.94736842105263) internal successors, (2982), 19 states have internal predecessors, (2982), 0 states have call successors, (0), 0 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 15:15:55,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:15:55,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 234 [2023-12-09 15:15:55,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:16:30,476 INFO L124 PetriNetUnfolderBase]: 26572/59895 cut-off events. [2023-12-09 15:16:30,477 INFO L125 PetriNetUnfolderBase]: For 815870/831673 co-relation queries the response was YES. [2023-12-09 15:16:30,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455199 conditions, 59895 events. 26572/59895 cut-off events. For 815870/831673 co-relation queries the response was YES. Maximal size of possible extension queue 2058. Compared 685913 event pairs, 4724 based on Foata normal form. 252/55650 useless extension candidates. Maximal degree in co-relation 123771. Up to 29900 conditions per place. [2023-12-09 15:16:31,341 INFO L140 encePairwiseOnDemand]: 198/234 looper letters, 2130 selfloop transitions, 178 changer transitions 718/3341 dead transitions. [2023-12-09 15:16:31,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 3341 transitions, 86295 flow [2023-12-09 15:16:31,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-09 15:16:31,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-12-09 15:16:31,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3582 transitions. [2023-12-09 15:16:31,344 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6958041958041958 [2023-12-09 15:16:31,344 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3582 transitions. [2023-12-09 15:16:31,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3582 transitions. [2023-12-09 15:16:31,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:16:31,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3582 transitions. [2023-12-09 15:16:31,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 162.8181818181818) internal successors, (3582), 22 states have internal predecessors, (3582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:16:31,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 234.0) internal successors, (5382), 23 states have internal predecessors, (5382), 0 states have call successors, (0), 0 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 15:16:31,352 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 234.0) internal successors, (5382), 23 states have internal predecessors, (5382), 0 states have call successors, (0), 0 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 15:16:31,352 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 413 predicate places. [2023-12-09 15:16:31,352 INFO L500 AbstractCegarLoop]: Abstraction has has 622 places, 3341 transitions, 86295 flow [2023-12-09 15:16:31,353 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 156.94736842105263) internal successors, (2982), 19 states have internal predecessors, (2982), 0 states have call successors, (0), 0 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 15:16:31,353 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:16:31,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:16:31,353 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-09 15:16:31,353 INFO L425 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:16:31,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:16:31,353 INFO L85 PathProgramCache]: Analyzing trace with hash 2131629426, now seen corresponding path program 6 times [2023-12-09 15:16:31,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:16:31,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827925408] [2023-12-09 15:16:31,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:16:31,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:16:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:16:31,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:16:31,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:16:31,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827925408] [2023-12-09 15:16:31,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827925408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:16:31,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:16:31,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-09 15:16:31,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43229689] [2023-12-09 15:16:31,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:16:31,863 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-09 15:16:31,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:16:31,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-09 15:16:31,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2023-12-09 15:16:31,865 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 234 [2023-12-09 15:16:31,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 3341 transitions, 86295 flow. Second operand has 21 states, 21 states have (on average 156.66666666666666) internal successors, (3290), 21 states have internal predecessors, (3290), 0 states have call successors, (0), 0 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 15:16:31,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:16:31,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 234 [2023-12-09 15:16:31,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:17:07,295 INFO L124 PetriNetUnfolderBase]: 26677/60438 cut-off events. [2023-12-09 15:17:07,296 INFO L125 PetriNetUnfolderBase]: For 873423/892355 co-relation queries the response was YES. [2023-12-09 15:17:07,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500225 conditions, 60438 events. 26677/60438 cut-off events. For 873423/892355 co-relation queries the response was YES. Maximal size of possible extension queue 2082. Compared 694409 event pairs, 4203 based on Foata normal form. 330/56155 useless extension candidates. Maximal degree in co-relation 138373. Up to 29793 conditions per place. [2023-12-09 15:17:08,013 INFO L140 encePairwiseOnDemand]: 198/234 looper letters, 2221 selfloop transitions, 233 changer transitions 718/3487 dead transitions. [2023-12-09 15:17:08,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 3487 transitions, 94527 flow [2023-12-09 15:17:08,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-09 15:17:08,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-12-09 15:17:08,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4095 transitions. [2023-12-09 15:17:08,016 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7 [2023-12-09 15:17:08,016 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4095 transitions. [2023-12-09 15:17:08,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4095 transitions. [2023-12-09 15:17:08,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:17:08,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4095 transitions. [2023-12-09 15:17:08,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 163.8) internal successors, (4095), 25 states have internal predecessors, (4095), 0 states have call successors, (0), 0 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 15:17:08,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 234.0) internal successors, (6084), 26 states have internal predecessors, (6084), 0 states have call successors, (0), 0 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 15:17:08,024 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 234.0) internal successors, (6084), 26 states have internal predecessors, (6084), 0 states have call successors, (0), 0 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 15:17:08,024 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 437 predicate places. [2023-12-09 15:17:08,024 INFO L500 AbstractCegarLoop]: Abstraction has has 646 places, 3487 transitions, 94527 flow [2023-12-09 15:17:08,024 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 156.66666666666666) internal successors, (3290), 21 states have internal predecessors, (3290), 0 states have call successors, (0), 0 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 15:17:08,024 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:17:08,025 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:08,025 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-09 15:17:08,025 INFO L425 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:17:08,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:17:08,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1203313820, now seen corresponding path program 7 times [2023-12-09 15:17:08,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:17:08,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451676355] [2023-12-09 15:17:08,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:17:08,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:17:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:17:08,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:17:08,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:17:08,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451676355] [2023-12-09 15:17:08,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451676355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:17:08,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:17:08,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-09 15:17:08,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629913146] [2023-12-09 15:17:08,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:17:08,455 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:17:08,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:17:08,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:17:08,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:17:08,456 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 234 [2023-12-09 15:17:08,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 646 places, 3487 transitions, 94527 flow. Second operand has 19 states, 19 states have (on average 156.94736842105263) internal successors, (2982), 19 states have internal predecessors, (2982), 0 states have call successors, (0), 0 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 15:17:08,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:17:08,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 234 [2023-12-09 15:17:08,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:17:47,085 INFO L124 PetriNetUnfolderBase]: 26486/60048 cut-off events. [2023-12-09 15:17:47,086 INFO L125 PetriNetUnfolderBase]: For 924525/947227 co-relation queries the response was YES. [2023-12-09 15:17:47,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541027 conditions, 60048 events. 26486/60048 cut-off events. For 924525/947227 co-relation queries the response was YES. Maximal size of possible extension queue 2076. Compared 691129 event pairs, 4743 based on Foata normal form. 286/55806 useless extension candidates. Maximal degree in co-relation 150186. Up to 29854 conditions per place. [2023-12-09 15:17:47,905 INFO L140 encePairwiseOnDemand]: 198/234 looper letters, 2239 selfloop transitions, 175 changer transitions 717/3447 dead transitions. [2023-12-09 15:17:47,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 666 places, 3447 transitions, 99017 flow [2023-12-09 15:17:47,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-09 15:17:47,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-12-09 15:17:47,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3420 transitions. [2023-12-09 15:17:47,907 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6959706959706959 [2023-12-09 15:17:47,907 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3420 transitions. [2023-12-09 15:17:47,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3420 transitions. [2023-12-09 15:17:47,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:17:47,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3420 transitions. [2023-12-09 15:17:47,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 162.85714285714286) internal successors, (3420), 21 states have internal predecessors, (3420), 0 states have call successors, (0), 0 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 15:17:47,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 234.0) internal successors, (5148), 22 states have internal predecessors, (5148), 0 states have call successors, (0), 0 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 15:17:47,913 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 234.0) internal successors, (5148), 22 states have internal predecessors, (5148), 0 states have call successors, (0), 0 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 15:17:47,913 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 457 predicate places. [2023-12-09 15:17:47,914 INFO L500 AbstractCegarLoop]: Abstraction has has 666 places, 3447 transitions, 99017 flow [2023-12-09 15:17:47,914 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 156.94736842105263) internal successors, (2982), 19 states have internal predecessors, (2982), 0 states have call successors, (0), 0 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 15:17:47,914 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:17:47,914 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:47,914 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-09 15:17:47,914 INFO L425 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:17:47,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:17:47,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1964622872, now seen corresponding path program 8 times [2023-12-09 15:17:47,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:17:47,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232555970] [2023-12-09 15:17:47,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:17:47,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:17:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:17:48,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:17:48,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:17:48,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232555970] [2023-12-09 15:17:48,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232555970] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:17:48,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034074871] [2023-12-09 15:17:48,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:17:48,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:17:48,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:17:48,370 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 15:17:48,373 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 15:17:48,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:17:48,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:17:48,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-09 15:17:48,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:17:48,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-09 15:17:48,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-09 15:17:48,877 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 15:17:48,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-09 15:17:48,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:17:49,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:17:49,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:17:49,302 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:17:49,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2023-12-09 15:17:49,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:17:49,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:17:49,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:17:49,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034074871] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:17:49,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:17:49,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 9] total 49 [2023-12-09 15:17:49,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508166956] [2023-12-09 15:17:49,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:17:49,555 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-09 15:17:49,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:17:49,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-09 15:17:49,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2153, Unknown=0, NotChecked=0, Total=2352 [2023-12-09 15:17:49,559 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 234 [2023-12-09 15:17:49,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 666 places, 3447 transitions, 99017 flow. Second operand has 49 states, 49 states have (on average 135.6122448979592) internal successors, (6645), 49 states have internal predecessors, (6645), 0 states have call successors, (0), 0 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 15:17:49,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:17:49,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 234 [2023-12-09 15:17:49,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-12-09 15:18:00,898 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 15:18:00,898 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:18:00,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-09 15:18:00,940 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-09 15:18:00,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-09 15:18:01,141 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,SelfDestructingSolverStorable24 [2023-12-09 15:18:01,141 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (49states, 132/234 universal loopers) in iteration 25,while PetriNetUnfolder was constructing finite prefix that currently has 112307 conditions, 10646 events (4967/10645 cut-off events. For 196047/200842 co-relation queries the response was YES. Maximal size of possible extension queue 1468. Compared 106714 event pairs, 187 based on Foata normal form. 146/11364 useless extension candidates. Maximal degree in co-relation 66418. Up to 4877 conditions per place.). [2023-12-09 15:18:01,142 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-12-09 15:18:01,142 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-12-09 15:18:01,143 INFO L457 BasicCegarLoop]: Path program histogram: [8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:18:01,147 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:18:01,147 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:18:01,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:18:01 BasicIcfg [2023-12-09 15:18:01,150 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:18:01,151 INFO L158 Benchmark]: Toolchain (without parser) took 238659.97ms. Allocated memory was 205.5MB in the beginning and 4.0GB in the end (delta: 3.8GB). Free memory was 159.1MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2023-12-09 15:18:01,151 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 205.5MB. Free memory was 163.2MB in the beginning and 163.0MB in the end (delta: 217.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:18:01,151 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.72ms. Allocated memory is still 205.5MB. Free memory was 158.6MB in the beginning and 146.5MB in the end (delta: 12.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-09 15:18:01,151 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.69ms. Allocated memory is still 205.5MB. Free memory was 146.5MB in the beginning and 144.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:18:01,151 INFO L158 Benchmark]: Boogie Preprocessor took 19.71ms. Allocated memory is still 205.5MB. Free memory was 144.4MB in the beginning and 142.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 15:18:01,152 INFO L158 Benchmark]: RCFGBuilder took 392.24ms. Allocated memory is still 205.5MB. Free memory was 142.9MB in the beginning and 122.9MB in the end (delta: 20.0MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-09 15:18:01,152 INFO L158 Benchmark]: TraceAbstraction took 238005.82ms. Allocated memory was 205.5MB in the beginning and 4.0GB in the end (delta: 3.8GB). Free memory was 122.0MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2023-12-09 15:18:01,156 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 205.5MB. Free memory was 163.2MB in the beginning and 163.0MB in the end (delta: 217.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 213.72ms. Allocated memory is still 205.5MB. Free memory was 158.6MB in the beginning and 146.5MB in the end (delta: 12.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.69ms. Allocated memory is still 205.5MB. Free memory was 146.5MB in the beginning and 144.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.71ms. Allocated memory is still 205.5MB. Free memory was 144.4MB in the beginning and 142.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 392.24ms. Allocated memory is still 205.5MB. Free memory was 142.9MB in the beginning and 122.9MB in the end (delta: 20.0MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 238005.82ms. Allocated memory was 205.5MB in the beginning and 4.0GB in the end (delta: 3.8GB). Free memory was 122.0MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (49states, 132/234 universal loopers) in iteration 25,while PetriNetUnfolder was constructing finite prefix that currently has 112307 conditions, 10646 events (4967/10645 cut-off events. For 196047/200842 co-relation queries the response was YES. Maximal size of possible extension queue 1468. Compared 106714 event pairs, 187 based on Foata normal form. 146/11364 useless extension candidates. Maximal degree in co-relation 66418. Up to 4877 conditions per place.). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (49states, 132/234 universal loopers) in iteration 25,while PetriNetUnfolder was constructing finite prefix that currently has 112307 conditions, 10646 events (4967/10645 cut-off events. For 196047/200842 co-relation queries the response was YES. Maximal size of possible extension queue 1468. Compared 106714 event pairs, 187 based on Foata normal form. 146/11364 useless extension candidates. Maximal degree in co-relation 66418. Up to 4877 conditions per place.). - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (49states, 132/234 universal loopers) in iteration 25,while PetriNetUnfolder was constructing finite prefix that currently has 112307 conditions, 10646 events (4967/10645 cut-off events. For 196047/200842 co-relation queries the response was YES. Maximal size of possible extension queue 1468. Compared 106714 event pairs, 187 based on Foata normal form. 146/11364 useless extension candidates. Maximal degree in co-relation 66418. Up to 4877 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 272 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: 237.9s, OverallIterations: 25, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 220.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7778 SdHoareTripleChecker+Valid, 7.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7778 mSDsluCounter, 17791 SdHoareTripleChecker+Invalid, 6.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15891 mSDsCounter, 268 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17673 IncrementalHoareTripleChecker+Invalid, 17941 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 268 mSolverCounterUnsat, 1900 mSDtfsCounter, 17673 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3386 GetRequests, 2515 SyntacticMatches, 4 SemanticMatches, 867 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11050 ImplicationChecksByTransitivity, 12.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99017occurred in iteration=24, InterpolantAutomatonStates: 482, 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, 0.8s SatisfiabilityAnalysisTime, 13.5s InterpolantComputationTime, 5431 NumberOfCodeBlocks, 5423 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 6581 ConstructedInterpolants, 7 QuantifiedInterpolants, 26699 SizeOfPredicates, 121 NumberOfNonLiveVariables, 2865 ConjunctsInSsa, 204 ConjunctsInUnsatCore, 40 InterpolantComputations, 22 PerfectInterpolantSequences, 45/73 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