/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/popl20-more-queue-add-2-nl.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:28:19,983 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:28:20,051 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 15:28:20,076 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:28:20,077 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:28:20,077 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:28:20,078 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:28:20,078 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:28:20,078 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:28:20,081 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:28:20,081 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:28:20,081 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:28:20,081 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:28:20,082 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:28:20,082 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:28:20,083 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:28:20,083 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:28:20,083 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:28:20,083 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:28:20,083 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:28:20,083 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:28:20,084 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:28:20,084 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:28:20,084 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:28:20,084 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:28:20,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:28:20,085 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:28:20,086 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:28:20,086 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:28:20,086 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:28:20,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:28:20,087 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:28:20,087 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:28:20,087 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:28:20,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:28:20,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:28:20,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:28:20,281 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:28:20,281 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:28:20,282 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c [2023-12-09 15:28:21,256 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:28:21,415 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:28:21,416 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c [2023-12-09 15:28:21,421 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45b83de33/a46b68e499c7474683ee7e5d2b9271c2/FLAGd21ac9ea9 [2023-12-09 15:28:21,432 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45b83de33/a46b68e499c7474683ee7e5d2b9271c2 [2023-12-09 15:28:21,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:28:21,435 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:28:21,437 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:28:21,437 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:28:21,440 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:28:21,441 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:28:21" (1/1) ... [2023-12-09 15:28:21,442 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@716d58a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:21, skipping insertion in model container [2023-12-09 15:28:21,442 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:28:21" (1/1) ... [2023-12-09 15:28:21,463 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:28:21,594 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c[2896,2909] [2023-12-09 15:28:21,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:28:21,606 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:28:21,620 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c[2896,2909] [2023-12-09 15:28:21,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:28:21,628 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:28:21,628 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:28:21,633 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:28:21,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:21 WrapperNode [2023-12-09 15:28:21,633 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:28:21,634 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:28:21,634 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:28:21,634 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:28:21,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:21" (1/1) ... [2023-12-09 15:28:21,643 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:21" (1/1) ... [2023-12-09 15:28:21,659 INFO L138 Inliner]: procedures = 25, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 171 [2023-12-09 15:28:21,662 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:28:21,662 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:28:21,662 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:28:21,662 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:28:21,668 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:21" (1/1) ... [2023-12-09 15:28:21,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:21" (1/1) ... [2023-12-09 15:28:21,671 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:21" (1/1) ... [2023-12-09 15:28:21,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:21" (1/1) ... [2023-12-09 15:28:21,676 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:21" (1/1) ... [2023-12-09 15:28:21,679 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:21" (1/1) ... [2023-12-09 15:28:21,680 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:21" (1/1) ... [2023-12-09 15:28:21,681 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:21" (1/1) ... [2023-12-09 15:28:21,682 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:28:21,683 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:28:21,683 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:28:21,683 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:28:21,684 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:21" (1/1) ... [2023-12-09 15:28:21,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:28:21,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:21,706 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 15:28:21,737 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 15:28:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:28:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:28:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:28:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:28:21,757 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:28:21,757 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:28:21,757 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:28:21,757 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:28:21,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:28:21,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 15:28:21,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 15:28:21,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-09 15:28:21,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:28:21,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:28:21,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:28:21,759 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 15:28:21,856 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:28:21,857 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:28:22,141 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:28:22,224 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:28:22,224 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-09 15:28:22,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:28:22 BoogieIcfgContainer [2023-12-09 15:28:22,225 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:28:22,227 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:28:22,227 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:28:22,229 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:28:22,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:28:21" (1/3) ... [2023-12-09 15:28:22,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@229ac910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:28:22, skipping insertion in model container [2023-12-09 15:28:22,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:21" (2/3) ... [2023-12-09 15:28:22,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@229ac910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:28:22, skipping insertion in model container [2023-12-09 15:28:22,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:28:22" (3/3) ... [2023-12-09 15:28:22,231 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2023-12-09 15:28:22,244 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:28:22,244 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:28:22,244 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:28:22,294 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 15:28:22,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 150 transitions, 314 flow [2023-12-09 15:28:22,398 INFO L124 PetriNetUnfolderBase]: 11/148 cut-off events. [2023-12-09 15:28:22,398 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:28:22,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 148 events. 11/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 110. Up to 3 conditions per place. [2023-12-09 15:28:22,402 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 150 transitions, 314 flow [2023-12-09 15:28:22,405 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 139 transitions, 290 flow [2023-12-09 15:28:22,410 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:28:22,415 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;@5bc10ea8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:28:22,415 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 15:28:22,431 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:28:22,431 INFO L124 PetriNetUnfolderBase]: 11/138 cut-off events. [2023-12-09 15:28:22,432 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:28:22,432 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:22,432 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] [2023-12-09 15:28:22,433 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 15:28:22,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:22,436 INFO L85 PathProgramCache]: Analyzing trace with hash 572280025, now seen corresponding path program 1 times [2023-12-09 15:28:22,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:22,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280158947] [2023-12-09 15:28:22,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:22,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:22,675 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 15:28:22,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:22,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280158947] [2023-12-09 15:28:22,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280158947] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:28:22,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:28:22,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-09 15:28:22,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829392478] [2023-12-09 15:28:22,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:28:22,686 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-09 15:28:22,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:22,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-09 15:28:22,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-09 15:28:22,717 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 150 [2023-12-09 15:28:22,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 139 transitions, 290 flow. Second operand has 2 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:22,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:22,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 150 [2023-12-09 15:28:22,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:22,762 INFO L124 PetriNetUnfolderBase]: 12/167 cut-off events. [2023-12-09 15:28:22,763 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-12-09 15:28:22,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 167 events. 12/167 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 220 event pairs, 5 based on Foata normal form. 14/170 useless extension candidates. Maximal degree in co-relation 108. Up to 22 conditions per place. [2023-12-09 15:28:22,765 INFO L140 encePairwiseOnDemand]: 142/150 looper letters, 7 selfloop transitions, 0 changer transitions 4/131 dead transitions. [2023-12-09 15:28:22,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 131 transitions, 288 flow [2023-12-09 15:28:22,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-09 15:28:22,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-12-09 15:28:22,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 283 transitions. [2023-12-09 15:28:22,781 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9433333333333334 [2023-12-09 15:28:22,782 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 283 transitions. [2023-12-09 15:28:22,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 283 transitions. [2023-12-09 15:28:22,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:22,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 283 transitions. [2023-12-09 15:28:22,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:22,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:22,796 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:22,800 INFO L308 CegarLoopForPetriNet]: 135 programPoint places, 1 predicate places. [2023-12-09 15:28:22,800 INFO L500 AbstractCegarLoop]: Abstraction has has 136 places, 131 transitions, 288 flow [2023-12-09 15:28:22,801 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:22,801 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:22,801 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] [2023-12-09 15:28:22,801 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:28:22,801 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 15:28:22,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:22,802 INFO L85 PathProgramCache]: Analyzing trace with hash -451832719, now seen corresponding path program 1 times [2023-12-09 15:28:22,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:22,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634132363] [2023-12-09 15:28:22,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:22,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:23,047 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 15:28:23,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:23,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634132363] [2023-12-09 15:28:23,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634132363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:28:23,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:28:23,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 15:28:23,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588797987] [2023-12-09 15:28:23,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:28:23,049 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 15:28:23,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:23,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 15:28:23,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 15:28:23,051 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 150 [2023-12-09 15:28:23,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 131 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:23,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:23,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 150 [2023-12-09 15:28:23,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:23,114 INFO L124 PetriNetUnfolderBase]: 13/170 cut-off events. [2023-12-09 15:28:23,114 INFO L125 PetriNetUnfolderBase]: For 36/42 co-relation queries the response was YES. [2023-12-09 15:28:23,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 170 events. 13/170 cut-off events. For 36/42 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 230 event pairs, 1 based on Foata normal form. 1/160 useless extension candidates. Maximal degree in co-relation 124. Up to 25 conditions per place. [2023-12-09 15:28:23,117 INFO L140 encePairwiseOnDemand]: 146/150 looper letters, 11 selfloop transitions, 3 changer transitions 4/134 dead transitions. [2023-12-09 15:28:23,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 134 transitions, 331 flow [2023-12-09 15:28:23,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 15:28:23,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 15:28:23,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 405 transitions. [2023-12-09 15:28:23,120 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9 [2023-12-09 15:28:23,120 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 405 transitions. [2023-12-09 15:28:23,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 405 transitions. [2023-12-09 15:28:23,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:23,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 405 transitions. [2023-12-09 15:28:23,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:23,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:23,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:23,125 INFO L308 CegarLoopForPetriNet]: 135 programPoint places, 3 predicate places. [2023-12-09 15:28:23,125 INFO L500 AbstractCegarLoop]: Abstraction has has 138 places, 134 transitions, 331 flow [2023-12-09 15:28:23,126 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:23,126 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:23,126 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] [2023-12-09 15:28:23,126 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:28:23,126 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 15:28:23,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:23,128 INFO L85 PathProgramCache]: Analyzing trace with hash -510469363, now seen corresponding path program 2 times [2023-12-09 15:28:23,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:23,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870930953] [2023-12-09 15:28:23,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:23,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:23,405 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 15:28:23,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:23,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870930953] [2023-12-09 15:28:23,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870930953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:28:23,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:28:23,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:28:23,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403420611] [2023-12-09 15:28:23,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:28:23,408 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:28:23,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:23,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:28:23,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:28:23,415 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 150 [2023-12-09 15:28:23,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 134 transitions, 331 flow. Second operand has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:23,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:23,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 150 [2023-12-09 15:28:23,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:23,554 INFO L124 PetriNetUnfolderBase]: 12/213 cut-off events. [2023-12-09 15:28:23,555 INFO L125 PetriNetUnfolderBase]: For 81/89 co-relation queries the response was YES. [2023-12-09 15:28:23,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 213 events. 12/213 cut-off events. For 81/89 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 316 event pairs, 1 based on Foata normal form. 4/204 useless extension candidates. Maximal degree in co-relation 195. Up to 23 conditions per place. [2023-12-09 15:28:23,558 INFO L140 encePairwiseOnDemand]: 138/150 looper letters, 23 selfloop transitions, 8 changer transitions 10/144 dead transitions. [2023-12-09 15:28:23,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 144 transitions, 439 flow [2023-12-09 15:28:23,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 15:28:23,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 15:28:23,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1089 transitions. [2023-12-09 15:28:23,561 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8066666666666666 [2023-12-09 15:28:23,561 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1089 transitions. [2023-12-09 15:28:23,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1089 transitions. [2023-12-09 15:28:23,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:23,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1089 transitions. [2023-12-09 15:28:23,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 121.0) internal successors, (1089), 9 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:23,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 150.0) internal successors, (1500), 10 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:23,567 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 150.0) internal successors, (1500), 10 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:23,568 INFO L308 CegarLoopForPetriNet]: 135 programPoint places, 11 predicate places. [2023-12-09 15:28:23,568 INFO L500 AbstractCegarLoop]: Abstraction has has 146 places, 144 transitions, 439 flow [2023-12-09 15:28:23,569 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:23,569 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:23,569 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] [2023-12-09 15:28:23,569 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:28:23,570 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 15:28:23,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:23,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1958211517, now seen corresponding path program 1 times [2023-12-09 15:28:23,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:23,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555121464] [2023-12-09 15:28:23,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:23,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:24,411 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 15:28:24,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:24,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555121464] [2023-12-09 15:28:24,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555121464] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:28:24,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:28:24,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:28:24,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820102983] [2023-12-09 15:28:24,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:28:24,415 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:28:24,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:24,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:28:24,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:28:24,421 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 150 [2023-12-09 15:28:24,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 144 transitions, 439 flow. Second operand has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:24,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:24,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 150 [2023-12-09 15:28:24,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:24,829 INFO L124 PetriNetUnfolderBase]: 147/552 cut-off events. [2023-12-09 15:28:24,829 INFO L125 PetriNetUnfolderBase]: For 687/711 co-relation queries the response was YES. [2023-12-09 15:28:24,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 552 events. 147/552 cut-off events. For 687/711 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2431 event pairs, 14 based on Foata normal form. 3/516 useless extension candidates. Maximal degree in co-relation 779. Up to 188 conditions per place. [2023-12-09 15:28:24,832 INFO L140 encePairwiseOnDemand]: 128/150 looper letters, 82 selfloop transitions, 26 changer transitions 20/207 dead transitions. [2023-12-09 15:28:24,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 207 transitions, 996 flow [2023-12-09 15:28:24,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-09 15:28:24,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-12-09 15:28:24,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2073 transitions. [2023-12-09 15:28:24,836 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6008695652173913 [2023-12-09 15:28:24,836 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2073 transitions. [2023-12-09 15:28:24,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2073 transitions. [2023-12-09 15:28:24,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:24,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2073 transitions. [2023-12-09 15:28:24,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 90.1304347826087) internal successors, (2073), 23 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:24,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 150.0) internal successors, (3600), 24 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:24,844 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 150.0) internal successors, (3600), 24 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:24,845 INFO L308 CegarLoopForPetriNet]: 135 programPoint places, 33 predicate places. [2023-12-09 15:28:24,845 INFO L500 AbstractCegarLoop]: Abstraction has has 168 places, 207 transitions, 996 flow [2023-12-09 15:28:24,846 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:24,846 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:24,846 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] [2023-12-09 15:28:24,846 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 15:28:24,846 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 15:28:24,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:24,846 INFO L85 PathProgramCache]: Analyzing trace with hash -168913853, now seen corresponding path program 2 times [2023-12-09 15:28:24,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:24,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975131707] [2023-12-09 15:28:24,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:24,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:25,383 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 15:28:25,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:25,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975131707] [2023-12-09 15:28:25,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975131707] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:28:25,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:28:25,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:28:25,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149756038] [2023-12-09 15:28:25,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:28:25,384 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:28:25,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:25,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:28:25,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:28:25,386 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 150 [2023-12-09 15:28:25,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 207 transitions, 996 flow. Second operand has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:25,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:25,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 150 [2023-12-09 15:28:25,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:25,703 INFO L124 PetriNetUnfolderBase]: 158/627 cut-off events. [2023-12-09 15:28:25,703 INFO L125 PetriNetUnfolderBase]: For 1085/1199 co-relation queries the response was YES. [2023-12-09 15:28:25,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1866 conditions, 627 events. 158/627 cut-off events. For 1085/1199 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3014 event pairs, 19 based on Foata normal form. 3/584 useless extension candidates. Maximal degree in co-relation 1122. Up to 239 conditions per place. [2023-12-09 15:28:25,707 INFO L140 encePairwiseOnDemand]: 128/150 looper letters, 100 selfloop transitions, 36 changer transitions 27/242 dead transitions. [2023-12-09 15:28:25,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 242 transitions, 1538 flow [2023-12-09 15:28:25,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-09 15:28:25,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-12-09 15:28:25,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1812 transitions. [2023-12-09 15:28:25,711 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.604 [2023-12-09 15:28:25,711 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1812 transitions. [2023-12-09 15:28:25,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1812 transitions. [2023-12-09 15:28:25,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:25,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1812 transitions. [2023-12-09 15:28:25,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 90.6) internal successors, (1812), 20 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:25,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:25,717 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:25,718 INFO L308 CegarLoopForPetriNet]: 135 programPoint places, 52 predicate places. [2023-12-09 15:28:25,718 INFO L500 AbstractCegarLoop]: Abstraction has has 187 places, 242 transitions, 1538 flow [2023-12-09 15:28:25,719 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:25,719 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:25,719 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] [2023-12-09 15:28:25,719 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 15:28:25,719 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 15:28:25,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:25,720 INFO L85 PathProgramCache]: Analyzing trace with hash -24463697, now seen corresponding path program 3 times [2023-12-09 15:28:25,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:25,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924275687] [2023-12-09 15:28:25,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:25,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:26,185 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 15:28:26,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:26,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924275687] [2023-12-09 15:28:26,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924275687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:28:26,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:28:26,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:28:26,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592715337] [2023-12-09 15:28:26,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:28:26,187 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:28:26,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:26,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:28:26,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:28:26,188 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 150 [2023-12-09 15:28:26,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 242 transitions, 1538 flow. Second operand has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:26,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:26,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 150 [2023-12-09 15:28:26,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:26,506 INFO L124 PetriNetUnfolderBase]: 160/645 cut-off events. [2023-12-09 15:28:26,507 INFO L125 PetriNetUnfolderBase]: For 1530/1924 co-relation queries the response was YES. [2023-12-09 15:28:26,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2338 conditions, 645 events. 160/645 cut-off events. For 1530/1924 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3164 event pairs, 19 based on Foata normal form. 35/633 useless extension candidates. Maximal degree in co-relation 1421. Up to 260 conditions per place. [2023-12-09 15:28:26,511 INFO L140 encePairwiseOnDemand]: 128/150 looper letters, 105 selfloop transitions, 34 changer transitions 35/253 dead transitions. [2023-12-09 15:28:26,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 253 transitions, 1968 flow [2023-12-09 15:28:26,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-09 15:28:26,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-12-09 15:28:26,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1892 transitions. [2023-12-09 15:28:26,515 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6006349206349206 [2023-12-09 15:28:26,515 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1892 transitions. [2023-12-09 15:28:26,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1892 transitions. [2023-12-09 15:28:26,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:26,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1892 transitions. [2023-12-09 15:28:26,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 90.0952380952381) internal successors, (1892), 21 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:26,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 150.0) internal successors, (3300), 22 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:26,523 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 150.0) internal successors, (3300), 22 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:26,525 INFO L308 CegarLoopForPetriNet]: 135 programPoint places, 72 predicate places. [2023-12-09 15:28:26,526 INFO L500 AbstractCegarLoop]: Abstraction has has 207 places, 253 transitions, 1968 flow [2023-12-09 15:28:26,526 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:26,526 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:26,526 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] [2023-12-09 15:28:26,527 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 15:28:26,527 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 15:28:26,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:26,527 INFO L85 PathProgramCache]: Analyzing trace with hash -814852709, now seen corresponding path program 4 times [2023-12-09 15:28:26,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:26,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181074585] [2023-12-09 15:28:26,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:26,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:27,056 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 15:28:27,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:27,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181074585] [2023-12-09 15:28:27,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181074585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:28:27,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:28:27,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:28:27,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129480344] [2023-12-09 15:28:27,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:28:27,057 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:28:27,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:27,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:28:27,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:28:27,059 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 150 [2023-12-09 15:28:27,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 253 transitions, 1968 flow. Second operand has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:27,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:27,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 150 [2023-12-09 15:28:27,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:27,422 INFO L124 PetriNetUnfolderBase]: 163/676 cut-off events. [2023-12-09 15:28:27,422 INFO L125 PetriNetUnfolderBase]: For 2025/2231 co-relation queries the response was YES. [2023-12-09 15:28:27,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2866 conditions, 676 events. 163/676 cut-off events. For 2025/2231 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3469 event pairs, 14 based on Foata normal form. 31/661 useless extension candidates. Maximal degree in co-relation 1829. Up to 273 conditions per place. [2023-12-09 15:28:27,426 INFO L140 encePairwiseOnDemand]: 128/150 looper letters, 107 selfloop transitions, 35 changer transitions 42/263 dead transitions. [2023-12-09 15:28:27,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 263 transitions, 2441 flow [2023-12-09 15:28:27,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-09 15:28:27,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-12-09 15:28:27,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1985 transitions. [2023-12-09 15:28:27,429 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6015151515151516 [2023-12-09 15:28:27,429 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1985 transitions. [2023-12-09 15:28:27,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1985 transitions. [2023-12-09 15:28:27,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:27,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1985 transitions. [2023-12-09 15:28:27,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 90.22727272727273) internal successors, (1985), 22 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:27,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 150.0) internal successors, (3450), 23 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:27,437 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 150.0) internal successors, (3450), 23 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:27,437 INFO L308 CegarLoopForPetriNet]: 135 programPoint places, 93 predicate places. [2023-12-09 15:28:27,438 INFO L500 AbstractCegarLoop]: Abstraction has has 228 places, 263 transitions, 2441 flow [2023-12-09 15:28:27,438 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:27,438 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:27,438 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] [2023-12-09 15:28:27,438 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-09 15:28:27,439 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 15:28:27,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:27,439 INFO L85 PathProgramCache]: Analyzing trace with hash 673463201, now seen corresponding path program 5 times [2023-12-09 15:28:27,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:27,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685098708] [2023-12-09 15:28:27,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:27,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:27,905 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 15:28:27,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:27,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685098708] [2023-12-09 15:28:27,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685098708] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:28:27,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:28:27,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:28:27,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485988457] [2023-12-09 15:28:27,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:28:27,906 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:28:27,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:27,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:28:27,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:28:27,908 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 150 [2023-12-09 15:28:27,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 263 transitions, 2441 flow. Second operand has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:27,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:27,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 150 [2023-12-09 15:28:27,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:28,215 INFO L124 PetriNetUnfolderBase]: 168/699 cut-off events. [2023-12-09 15:28:28,216 INFO L125 PetriNetUnfolderBase]: For 2827/3115 co-relation queries the response was YES. [2023-12-09 15:28:28,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3452 conditions, 699 events. 168/699 cut-off events. For 2827/3115 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3696 event pairs, 17 based on Foata normal form. 13/662 useless extension candidates. Maximal degree in co-relation 2064. Up to 292 conditions per place. [2023-12-09 15:28:28,220 INFO L140 encePairwiseOnDemand]: 128/150 looper letters, 112 selfloop transitions, 37 changer transitions 49/277 dead transitions. [2023-12-09 15:28:28,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 277 transitions, 3011 flow [2023-12-09 15:28:28,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-09 15:28:28,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-12-09 15:28:28,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1811 transitions. [2023-12-09 15:28:28,226 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6036666666666667 [2023-12-09 15:28:28,226 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1811 transitions. [2023-12-09 15:28:28,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1811 transitions. [2023-12-09 15:28:28,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:28,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1811 transitions. [2023-12-09 15:28:28,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 90.55) internal successors, (1811), 20 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:28,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:28,234 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:28,235 INFO L308 CegarLoopForPetriNet]: 135 programPoint places, 112 predicate places. [2023-12-09 15:28:28,235 INFO L500 AbstractCegarLoop]: Abstraction has has 247 places, 277 transitions, 3011 flow [2023-12-09 15:28:28,236 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:28,236 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:28,236 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] [2023-12-09 15:28:28,236 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-09 15:28:28,236 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 15:28:28,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:28,237 INFO L85 PathProgramCache]: Analyzing trace with hash 480103595, now seen corresponding path program 6 times [2023-12-09 15:28:28,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:28,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267946881] [2023-12-09 15:28:28,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:28,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:28,710 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 15:28:28,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:28,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267946881] [2023-12-09 15:28:28,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267946881] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:28:28,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:28:28,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:28:28,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394177452] [2023-12-09 15:28:28,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:28:28,711 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:28:28,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:28,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:28:28,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:28:28,713 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 150 [2023-12-09 15:28:28,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 277 transitions, 3011 flow. Second operand has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:28,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:28,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 150 [2023-12-09 15:28:28,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:29,023 INFO L124 PetriNetUnfolderBase]: 173/748 cut-off events. [2023-12-09 15:28:29,023 INFO L125 PetriNetUnfolderBase]: For 3904/4338 co-relation queries the response was YES. [2023-12-09 15:28:29,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4104 conditions, 748 events. 173/748 cut-off events. For 3904/4338 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4135 event pairs, 18 based on Foata normal form. 15/711 useless extension candidates. Maximal degree in co-relation 2488. Up to 311 conditions per place. [2023-12-09 15:28:29,028 INFO L140 encePairwiseOnDemand]: 128/150 looper letters, 119 selfloop transitions, 38 changer transitions 56/292 dead transitions. [2023-12-09 15:28:29,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 292 transitions, 3669 flow [2023-12-09 15:28:29,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-09 15:28:29,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-12-09 15:28:29,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1812 transitions. [2023-12-09 15:28:29,034 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.604 [2023-12-09 15:28:29,034 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1812 transitions. [2023-12-09 15:28:29,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1812 transitions. [2023-12-09 15:28:29,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:29,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1812 transitions. [2023-12-09 15:28:29,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 90.6) internal successors, (1812), 20 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:29,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:29,050 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:29,051 INFO L308 CegarLoopForPetriNet]: 135 programPoint places, 131 predicate places. [2023-12-09 15:28:29,051 INFO L500 AbstractCegarLoop]: Abstraction has has 266 places, 292 transitions, 3669 flow [2023-12-09 15:28:29,051 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:29,052 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:29,052 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] [2023-12-09 15:28:29,052 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-09 15:28:29,052 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 15:28:29,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:29,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1475593155, now seen corresponding path program 7 times [2023-12-09 15:28:29,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:29,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692049030] [2023-12-09 15:28:29,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:29,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:29,432 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 15:28:29,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:29,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692049030] [2023-12-09 15:28:29,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692049030] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:28:29,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:28:29,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:28:29,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028472546] [2023-12-09 15:28:29,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:28:29,436 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:28:29,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:29,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:28:29,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:28:29,438 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 150 [2023-12-09 15:28:29,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 292 transitions, 3669 flow. Second operand has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:29,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:29,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 150 [2023-12-09 15:28:29,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:29,725 INFO L124 PetriNetUnfolderBase]: 175/764 cut-off events. [2023-12-09 15:28:29,725 INFO L125 PetriNetUnfolderBase]: For 5114/5712 co-relation queries the response was YES. [2023-12-09 15:28:29,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4688 conditions, 764 events. 175/764 cut-off events. For 5114/5712 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4265 event pairs, 20 based on Foata normal form. 13/722 useless extension candidates. Maximal degree in co-relation 2846. Up to 319 conditions per place. [2023-12-09 15:28:29,731 INFO L140 encePairwiseOnDemand]: 128/150 looper letters, 125 selfloop transitions, 35 changer transitions 64/303 dead transitions. [2023-12-09 15:28:29,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 303 transitions, 4287 flow [2023-12-09 15:28:29,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-09 15:28:29,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-12-09 15:28:29,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1808 transitions. [2023-12-09 15:28:29,733 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6026666666666667 [2023-12-09 15:28:29,733 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1808 transitions. [2023-12-09 15:28:29,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1808 transitions. [2023-12-09 15:28:29,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:29,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1808 transitions. [2023-12-09 15:28:29,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 90.4) internal successors, (1808), 20 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:29,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:29,738 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:29,739 INFO L308 CegarLoopForPetriNet]: 135 programPoint places, 150 predicate places. [2023-12-09 15:28:29,739 INFO L500 AbstractCegarLoop]: Abstraction has has 285 places, 303 transitions, 4287 flow [2023-12-09 15:28:29,739 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:29,739 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:29,739 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:28:29,740 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-09 15:28:29,740 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 15:28:29,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:29,740 INFO L85 PathProgramCache]: Analyzing trace with hash -505320899, now seen corresponding path program 8 times [2023-12-09 15:28:29,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:29,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519023015] [2023-12-09 15:28:29,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:29,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:30,177 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 15:28:30,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:30,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519023015] [2023-12-09 15:28:30,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519023015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:28:30,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:28:30,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:28:30,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859650332] [2023-12-09 15:28:30,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:28:30,179 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:28:30,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:30,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:28:30,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:28:30,181 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 150 [2023-12-09 15:28:30,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 303 transitions, 4287 flow. Second operand has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:30,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:30,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 150 [2023-12-09 15:28:30,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:30,473 INFO L124 PetriNetUnfolderBase]: 178/777 cut-off events. [2023-12-09 15:28:30,473 INFO L125 PetriNetUnfolderBase]: For 6172/6766 co-relation queries the response was YES. [2023-12-09 15:28:30,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5320 conditions, 777 events. 178/777 cut-off events. For 6172/6766 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4449 event pairs, 15 based on Foata normal form. 15/739 useless extension candidates. Maximal degree in co-relation 3533. Up to 332 conditions per place. [2023-12-09 15:28:30,479 INFO L140 encePairwiseOnDemand]: 128/150 looper letters, 127 selfloop transitions, 36 changer transitions 71/313 dead transitions. [2023-12-09 15:28:30,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 313 transitions, 4940 flow [2023-12-09 15:28:30,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-09 15:28:30,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-12-09 15:28:30,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1901 transitions. [2023-12-09 15:28:30,483 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6034920634920635 [2023-12-09 15:28:30,484 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1901 transitions. [2023-12-09 15:28:30,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1901 transitions. [2023-12-09 15:28:30,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:30,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1901 transitions. [2023-12-09 15:28:30,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 90.52380952380952) internal successors, (1901), 21 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:30,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 150.0) internal successors, (3300), 22 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:30,491 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 150.0) internal successors, (3300), 22 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:30,492 INFO L308 CegarLoopForPetriNet]: 135 programPoint places, 170 predicate places. [2023-12-09 15:28:30,492 INFO L500 AbstractCegarLoop]: Abstraction has has 305 places, 313 transitions, 4940 flow [2023-12-09 15:28:30,493 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:30,493 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:30,493 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] [2023-12-09 15:28:30,493 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-09 15:28:30,493 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 15:28:30,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:30,493 INFO L85 PathProgramCache]: Analyzing trace with hash -528383475, now seen corresponding path program 9 times [2023-12-09 15:28:30,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:30,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14947567] [2023-12-09 15:28:30,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:30,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:30,945 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 15:28:30,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:30,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14947567] [2023-12-09 15:28:30,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14947567] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:28:30,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:28:30,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:28:30,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770087179] [2023-12-09 15:28:30,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:28:30,946 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:28:30,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:30,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:28:30,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:28:30,948 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 150 [2023-12-09 15:28:30,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 313 transitions, 4940 flow. Second operand has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:30,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:30,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 150 [2023-12-09 15:28:30,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:31,326 INFO L124 PetriNetUnfolderBase]: 181/802 cut-off events. [2023-12-09 15:28:31,327 INFO L125 PetriNetUnfolderBase]: For 7772/8458 co-relation queries the response was YES. [2023-12-09 15:28:31,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5992 conditions, 802 events. 181/802 cut-off events. For 7772/8458 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4714 event pairs, 14 based on Foata normal form. 7/754 useless extension candidates. Maximal degree in co-relation 3749. Up to 345 conditions per place. [2023-12-09 15:28:31,370 INFO L140 encePairwiseOnDemand]: 129/150 looper letters, 129 selfloop transitions, 40 changer transitions 78/326 dead transitions. [2023-12-09 15:28:31,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 326 transitions, 5720 flow [2023-12-09 15:28:31,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-09 15:28:31,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-12-09 15:28:31,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1813 transitions. [2023-12-09 15:28:31,373 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6043333333333333 [2023-12-09 15:28:31,373 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1813 transitions. [2023-12-09 15:28:31,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1813 transitions. [2023-12-09 15:28:31,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:31,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1813 transitions. [2023-12-09 15:28:31,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 90.65) internal successors, (1813), 20 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:31,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:31,380 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:31,381 INFO L308 CegarLoopForPetriNet]: 135 programPoint places, 189 predicate places. [2023-12-09 15:28:31,381 INFO L500 AbstractCegarLoop]: Abstraction has has 324 places, 326 transitions, 5720 flow [2023-12-09 15:28:31,381 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:31,381 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:31,382 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] [2023-12-09 15:28:31,382 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-09 15:28:31,382 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 15:28:31,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:31,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1737313445, now seen corresponding path program 10 times [2023-12-09 15:28:31,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:31,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199051209] [2023-12-09 15:28:31,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:31,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:31,784 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 15:28:31,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:31,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199051209] [2023-12-09 15:28:31,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199051209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:28:31,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:28:31,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:28:31,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762580732] [2023-12-09 15:28:31,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:28:31,786 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:28:31,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:31,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:28:31,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:28:31,788 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 150 [2023-12-09 15:28:31,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 326 transitions, 5720 flow. Second operand has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:31,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:31,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 150 [2023-12-09 15:28:31,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:32,138 INFO L124 PetriNetUnfolderBase]: 183/810 cut-off events. [2023-12-09 15:28:32,138 INFO L125 PetriNetUnfolderBase]: For 9486/10510 co-relation queries the response was YES. [2023-12-09 15:28:32,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6644 conditions, 810 events. 183/810 cut-off events. For 9486/10510 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4767 event pairs, 17 based on Foata normal form. 5/757 useless extension candidates. Maximal degree in co-relation 4509. Up to 353 conditions per place. [2023-12-09 15:28:32,145 INFO L140 encePairwiseOnDemand]: 128/150 looper letters, 135 selfloop transitions, 37 changer transitions 86/337 dead transitions. [2023-12-09 15:28:32,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 337 transitions, 6472 flow [2023-12-09 15:28:32,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-09 15:28:32,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-12-09 15:28:32,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1809 transitions. [2023-12-09 15:28:32,148 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.603 [2023-12-09 15:28:32,148 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1809 transitions. [2023-12-09 15:28:32,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1809 transitions. [2023-12-09 15:28:32,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:32,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1809 transitions. [2023-12-09 15:28:32,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 90.45) internal successors, (1809), 20 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:32,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:32,153 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:32,154 INFO L308 CegarLoopForPetriNet]: 135 programPoint places, 208 predicate places. [2023-12-09 15:28:32,154 INFO L500 AbstractCegarLoop]: Abstraction has has 343 places, 337 transitions, 6472 flow [2023-12-09 15:28:32,154 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:32,154 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:32,154 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] [2023-12-09 15:28:32,154 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-09 15:28:32,155 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 15:28:32,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:32,155 INFO L85 PathProgramCache]: Analyzing trace with hash -301741713, now seen corresponding path program 11 times [2023-12-09 15:28:32,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:32,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607948810] [2023-12-09 15:28:32,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:32,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:32,645 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 15:28:32,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:32,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607948810] [2023-12-09 15:28:32,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607948810] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:28:32,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:28:32,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 15:28:32,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997097111] [2023-12-09 15:28:32,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:28:32,646 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:28:32,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:32,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:28:32,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:28:32,647 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 150 [2023-12-09 15:28:32,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 337 transitions, 6472 flow. Second operand has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:32,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:32,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 150 [2023-12-09 15:28:32,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:33,024 INFO L124 PetriNetUnfolderBase]: 186/847 cut-off events. [2023-12-09 15:28:33,024 INFO L125 PetriNetUnfolderBase]: For 11371/12665 co-relation queries the response was YES. [2023-12-09 15:28:33,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7382 conditions, 847 events. 186/847 cut-off events. For 11371/12665 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5116 event pairs, 16 based on Foata normal form. 5/794 useless extension candidates. Maximal degree in co-relation 4914. Up to 366 conditions per place. [2023-12-09 15:28:33,032 INFO L140 encePairwiseOnDemand]: 129/150 looper letters, 138 selfloop transitions, 37 changer transitions 93/347 dead transitions. [2023-12-09 15:28:33,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 347 transitions, 7253 flow [2023-12-09 15:28:33,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-09 15:28:33,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-12-09 15:28:33,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1817 transitions. [2023-12-09 15:28:33,035 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6056666666666667 [2023-12-09 15:28:33,035 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1817 transitions. [2023-12-09 15:28:33,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1817 transitions. [2023-12-09 15:28:33,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:33,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1817 transitions. [2023-12-09 15:28:33,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 90.85) internal successors, (1817), 20 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:33,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:33,041 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 150.0) internal successors, (3150), 21 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:33,042 INFO L308 CegarLoopForPetriNet]: 135 programPoint places, 227 predicate places. [2023-12-09 15:28:33,042 INFO L500 AbstractCegarLoop]: Abstraction has has 362 places, 347 transitions, 7253 flow [2023-12-09 15:28:33,042 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.875) internal successors, (1406), 16 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:33,042 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:33,042 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:28:33,043 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-09 15:28:33,043 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 15:28:33,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:33,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1494269122, now seen corresponding path program 1 times [2023-12-09 15:28:33,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:33,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565493838] [2023-12-09 15:28:33,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:33,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:33,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:33,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:33,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565493838] [2023-12-09 15:28:33,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565493838] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:28:33,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022445849] [2023-12-09 15:28:33,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:33,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:33,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:33,192 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 15:28:33,216 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 15:28:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:33,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-09 15:28:33,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:28:33,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:28:33,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-09 15:28:33,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022445849] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:28:33,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-09 15:28:33,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-12-09 15:28:33,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085861548] [2023-12-09 15:28:33,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:28:33,421 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-09 15:28:33,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:33,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-09 15:28:33,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-09 15:28:33,421 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 150 [2023-12-09 15:28:33,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 347 transitions, 7253 flow. Second operand has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:33,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:33,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 150 [2023-12-09 15:28:33,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:33,577 INFO L124 PetriNetUnfolderBase]: 270/1115 cut-off events. [2023-12-09 15:28:33,577 INFO L125 PetriNetUnfolderBase]: For 17182/18576 co-relation queries the response was YES. [2023-12-09 15:28:33,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10286 conditions, 1115 events. 270/1115 cut-off events. For 17182/18576 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7370 event pairs, 77 based on Foata normal form. 45/1067 useless extension candidates. Maximal degree in co-relation 7465. Up to 586 conditions per place. [2023-12-09 15:28:33,591 INFO L140 encePairwiseOnDemand]: 146/150 looper letters, 18 selfloop transitions, 11 changer transitions 179/345 dead transitions. [2023-12-09 15:28:33,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 345 transitions, 7419 flow [2023-12-09 15:28:33,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-09 15:28:33,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-12-09 15:28:33,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 543 transitions. [2023-12-09 15:28:33,592 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.905 [2023-12-09 15:28:33,592 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 543 transitions. [2023-12-09 15:28:33,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 543 transitions. [2023-12-09 15:28:33,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:33,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 543 transitions. [2023-12-09 15:28:33,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:33,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:33,595 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:33,595 INFO L308 CegarLoopForPetriNet]: 135 programPoint places, 230 predicate places. [2023-12-09 15:28:33,595 INFO L500 AbstractCegarLoop]: Abstraction has has 365 places, 345 transitions, 7419 flow [2023-12-09 15:28:33,596 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:33,596 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:33,596 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] [2023-12-09 15:28:33,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-09 15:28:33,802 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-09 15:28:33,803 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 15:28:33,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:33,803 INFO L85 PathProgramCache]: Analyzing trace with hash -724947872, now seen corresponding path program 1 times [2023-12-09 15:28:33,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:33,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660342574] [2023-12-09 15:28:33,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:33,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:33,904 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 15:28:33,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:33,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660342574] [2023-12-09 15:28:33,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660342574] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:28:33,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466169195] [2023-12-09 15:28:33,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:33,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:33,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:33,915 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 15:28:33,924 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 15:28:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:34,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-09 15:28:34,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:28:34,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:34,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:28:34,284 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 15:28:34,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466169195] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:28:34,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:28:34,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-12-09 15:28:34,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882649994] [2023-12-09 15:28:34,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:28:34,285 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:28:34,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:34,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:28:34,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:28:34,286 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 150 [2023-12-09 15:28:34,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 345 transitions, 7419 flow. Second operand has 19 states, 19 states have (on average 116.78947368421052) internal successors, (2219), 19 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:34,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:34,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 150 [2023-12-09 15:28:34,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:34,717 INFO L124 PetriNetUnfolderBase]: 378/1711 cut-off events. [2023-12-09 15:28:34,718 INFO L125 PetriNetUnfolderBase]: For 28789/30733 co-relation queries the response was YES. [2023-12-09 15:28:34,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15715 conditions, 1711 events. 378/1711 cut-off events. For 28789/30733 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 13263 event pairs, 97 based on Foata normal form. 38/1610 useless extension candidates. Maximal degree in co-relation 6956. Up to 854 conditions per place. [2023-12-09 15:28:34,729 INFO L140 encePairwiseOnDemand]: 135/150 looper letters, 41 selfloop transitions, 13 changer transitions 252/423 dead transitions. [2023-12-09 15:28:34,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 423 transitions, 10208 flow [2023-12-09 15:28:34,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-09 15:28:34,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-12-09 15:28:34,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2108 transitions. [2023-12-09 15:28:34,731 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7807407407407407 [2023-12-09 15:28:34,731 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2108 transitions. [2023-12-09 15:28:34,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2108 transitions. [2023-12-09 15:28:34,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:34,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2108 transitions. [2023-12-09 15:28:34,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 117.11111111111111) internal successors, (2108), 18 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:34,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 150.0) internal successors, (2850), 19 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:34,736 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 150.0) internal successors, (2850), 19 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:34,736 INFO L308 CegarLoopForPetriNet]: 135 programPoint places, 247 predicate places. [2023-12-09 15:28:34,736 INFO L500 AbstractCegarLoop]: Abstraction has has 382 places, 423 transitions, 10208 flow [2023-12-09 15:28:34,737 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 116.78947368421052) internal successors, (2219), 19 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:34,737 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:34,737 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:28:34,748 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 15:28:34,941 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-09 15:28:34,944 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 15:28:34,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:34,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1252689560, now seen corresponding path program 2 times [2023-12-09 15:28:34,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:34,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516329841] [2023-12-09 15:28:34,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:34,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:35,521 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:35,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:35,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516329841] [2023-12-09 15:28:35,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516329841] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:28:35,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539677995] [2023-12-09 15:28:35,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:28:35,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:35,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:35,523 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 15:28:35,580 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 15:28:35,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:28:35,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:28:35,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-09 15:28:35,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:28:36,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2023-12-09 15:28:36,250 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:36,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:28:36,408 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-12-09 15:28:36,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-12-09 15:28:37,046 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:37,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539677995] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:28:37,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:28:37,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 13, 14] total 45 [2023-12-09 15:28:37,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330851417] [2023-12-09 15:28:37,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:28:37,047 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-09 15:28:37,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:37,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-09 15:28:37,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1629, Unknown=0, NotChecked=0, Total=1980 [2023-12-09 15:28:37,051 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 150 [2023-12-09 15:28:37,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 423 transitions, 10208 flow. Second operand has 45 states, 45 states have (on average 70.08888888888889) internal successors, (3154), 45 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:37,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:37,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 150 [2023-12-09 15:28:37,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:40,392 INFO L124 PetriNetUnfolderBase]: 3231/8824 cut-off events. [2023-12-09 15:28:40,392 INFO L125 PetriNetUnfolderBase]: For 105584/109908 co-relation queries the response was YES. [2023-12-09 15:28:40,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86376 conditions, 8824 events. 3231/8824 cut-off events. For 105584/109908 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 84343 event pairs, 1028 based on Foata normal form. 143/8131 useless extension candidates. Maximal degree in co-relation 40103. Up to 5429 conditions per place. [2023-12-09 15:28:40,518 INFO L140 encePairwiseOnDemand]: 116/150 looper letters, 262 selfloop transitions, 86 changer transitions 435/860 dead transitions. [2023-12-09 15:28:40,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 860 transitions, 23365 flow [2023-12-09 15:28:40,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-09 15:28:40,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2023-12-09 15:28:40,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 3870 transitions. [2023-12-09 15:28:40,523 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2023-12-09 15:28:40,523 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 3870 transitions. [2023-12-09 15:28:40,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 3870 transitions. [2023-12-09 15:28:40,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:40,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 3870 transitions. [2023-12-09 15:28:40,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 71.66666666666667) internal successors, (3870), 54 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:40,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 150.0) internal successors, (8250), 55 states have internal predecessors, (8250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:40,540 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 150.0) internal successors, (8250), 55 states have internal predecessors, (8250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:40,541 INFO L308 CegarLoopForPetriNet]: 135 programPoint places, 300 predicate places. [2023-12-09 15:28:40,541 INFO L500 AbstractCegarLoop]: Abstraction has has 435 places, 860 transitions, 23365 flow [2023-12-09 15:28:40,542 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 70.08888888888889) internal successors, (3154), 45 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:40,542 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:40,542 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:28:40,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-09 15:28:40,746 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:40,747 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 15:28:40,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:40,747 INFO L85 PathProgramCache]: Analyzing trace with hash 352417392, now seen corresponding path program 3 times [2023-12-09 15:28:40,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:40,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124804386] [2023-12-09 15:28:40,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:40,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:41,577 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:41,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:41,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124804386] [2023-12-09 15:28:41,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124804386] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:28:41,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98940595] [2023-12-09 15:28:41,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:28:41,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:41,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:41,578 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 15:28:41,580 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 15:28:41,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:28:41,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:28:41,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-09 15:28:41,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:28:42,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 15:28:42,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-12-09 15:28:42,116 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:28:42,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:28:42,255 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:28:42,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 37 [2023-12-09 15:28:42,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-12-09 15:28:42,672 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:28:42,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98940595] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:28:42,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:28:42,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 12] total 41 [2023-12-09 15:28:42,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660378693] [2023-12-09 15:28:42,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:28:42,673 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-09 15:28:42,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:42,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-09 15:28:42,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1522, Unknown=8, NotChecked=0, Total=1640 [2023-12-09 15:28:42,676 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 150 [2023-12-09 15:28:42,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 860 transitions, 23365 flow. Second operand has 41 states, 41 states have (on average 86.2439024390244) internal successors, (3536), 41 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:42,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:42,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 150 [2023-12-09 15:28:42,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:47,295 INFO L124 PetriNetUnfolderBase]: 3788/9824 cut-off events. [2023-12-09 15:28:47,295 INFO L125 PetriNetUnfolderBase]: For 134213/138935 co-relation queries the response was YES. [2023-12-09 15:28:47,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103103 conditions, 9824 events. 3788/9824 cut-off events. For 134213/138935 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 91344 event pairs, 1293 based on Foata normal form. 60/9151 useless extension candidates. Maximal degree in co-relation 49946. Up to 6317 conditions per place. [2023-12-09 15:28:47,404 INFO L140 encePairwiseOnDemand]: 126/150 looper letters, 298 selfloop transitions, 87 changer transitions 440/942 dead transitions. [2023-12-09 15:28:47,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 942 transitions, 26744 flow [2023-12-09 15:28:47,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-09 15:28:47,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-12-09 15:28:47,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3932 transitions. [2023-12-09 15:28:47,414 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5825185185185185 [2023-12-09 15:28:47,414 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 3932 transitions. [2023-12-09 15:28:47,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 3932 transitions. [2023-12-09 15:28:47,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:47,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 3932 transitions. [2023-12-09 15:28:47,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 87.37777777777778) internal successors, (3932), 45 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:47,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 150.0) internal successors, (6900), 46 states have internal predecessors, (6900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:47,427 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 150.0) internal successors, (6900), 46 states have internal predecessors, (6900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:47,427 INFO L308 CegarLoopForPetriNet]: 135 programPoint places, 343 predicate places. [2023-12-09 15:28:47,427 INFO L500 AbstractCegarLoop]: Abstraction has has 478 places, 942 transitions, 26744 flow [2023-12-09 15:28:47,428 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 86.2439024390244) internal successors, (3536), 41 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:47,428 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:47,428 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:28:47,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-09 15:28:47,632 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-09 15:28:47,633 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 15:28:47,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:47,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1125969189, now seen corresponding path program 1 times [2023-12-09 15:28:47,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:47,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349043998] [2023-12-09 15:28:47,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:47,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:49,299 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:49,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:49,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349043998] [2023-12-09 15:28:49,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349043998] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:28:49,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023772726] [2023-12-09 15:28:49,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:49,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:49,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:49,301 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 15:28:49,312 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 15:28:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:49,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-09 15:28:49,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:28:50,294 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:28:50,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2023-12-09 15:28:51,127 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:51,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:28:52,155 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:28:52,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 24 [2023-12-09 15:28:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:53,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023772726] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:28:53,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:28:53,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 31, 30] total 86 [2023-12-09 15:28:53,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465048447] [2023-12-09 15:28:53,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:28:53,593 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-12-09 15:28:53,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:53,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-12-09 15:28:53,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=732, Invalid=6578, Unknown=0, NotChecked=0, Total=7310 [2023-12-09 15:28:53,597 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 150 [2023-12-09 15:28:53,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 942 transitions, 26744 flow. Second operand has 86 states, 86 states have (on average 50.75581395348837) internal successors, (4365), 86 states have internal predecessors, (4365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:53,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:53,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 150 [2023-12-09 15:28:53,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:29:14,399 INFO L124 PetriNetUnfolderBase]: 8109/17301 cut-off events. [2023-12-09 15:29:14,399 INFO L125 PetriNetUnfolderBase]: For 249322/252092 co-relation queries the response was YES. [2023-12-09 15:29:14,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184171 conditions, 17301 events. 8109/17301 cut-off events. For 249322/252092 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 162809 event pairs, 490 based on Foata normal form. 99/16408 useless extension candidates. Maximal degree in co-relation 95819. Up to 10475 conditions per place. [2023-12-09 15:29:14,592 INFO L140 encePairwiseOnDemand]: 99/150 looper letters, 697 selfloop transitions, 494 changer transitions 907/2137 dead transitions. [2023-12-09 15:29:14,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 673 places, 2137 transitions, 58513 flow [2023-12-09 15:29:14,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2023-12-09 15:29:14,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2023-12-09 15:29:14,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 10258 transitions. [2023-12-09 15:29:14,606 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3489115646258503 [2023-12-09 15:29:14,606 INFO L72 ComplementDD]: Start complementDD. Operand 196 states and 10258 transitions. [2023-12-09 15:29:14,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 196 states and 10258 transitions. [2023-12-09 15:29:14,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:29:14,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 196 states and 10258 transitions. [2023-12-09 15:29:14,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 197 states, 196 states have (on average 52.33673469387755) internal successors, (10258), 196 states have internal predecessors, (10258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:29:14,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 197 states, 197 states have (on average 150.0) internal successors, (29550), 197 states have internal predecessors, (29550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:29:14,649 INFO L81 ComplementDD]: Finished complementDD. Result has 197 states, 197 states have (on average 150.0) internal successors, (29550), 197 states have internal predecessors, (29550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:29:14,649 INFO L308 CegarLoopForPetriNet]: 135 programPoint places, 538 predicate places. [2023-12-09 15:29:14,650 INFO L500 AbstractCegarLoop]: Abstraction has has 673 places, 2137 transitions, 58513 flow [2023-12-09 15:29:14,650 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 50.75581395348837) internal successors, (4365), 86 states have internal predecessors, (4365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:29:14,650 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:29:14,651 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:29:14,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-09 15:29:14,855 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:29:14,855 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 15:29:14,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:29:14,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1120265479, now seen corresponding path program 2 times [2023-12-09 15:29:14,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:29:14,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41914542] [2023-12-09 15:29:14,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:29:14,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:29:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:29:16,531 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:29:16,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:29:16,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41914542] [2023-12-09 15:29:16,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41914542] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:29:16,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603705349] [2023-12-09 15:29:16,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:29:16,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:29:16,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:29:16,533 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 15:29:16,534 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 15:29:16,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:29:16,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:29:16,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-09 15:29:16,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:29:17,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2023-12-09 15:29:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:29:18,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:29:19,296 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:29:19,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 24 [2023-12-09 15:29:20,677 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:29:20,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603705349] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:29:20,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:29:20,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 31, 29] total 88 [2023-12-09 15:29:20,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642081674] [2023-12-09 15:29:20,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:29:20,678 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2023-12-09 15:29:20,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:29:20,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2023-12-09 15:29:20,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=628, Invalid=7028, Unknown=0, NotChecked=0, Total=7656 [2023-12-09 15:29:20,682 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 150 [2023-12-09 15:29:20,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 673 places, 2137 transitions, 58513 flow. Second operand has 88 states, 88 states have (on average 50.88636363636363) internal successors, (4478), 88 states have internal predecessors, (4478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:29:20,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:29:20,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 150 [2023-12-09 15:29:20,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:29:49,145 INFO L124 PetriNetUnfolderBase]: 10967/23806 cut-off events. [2023-12-09 15:29:49,145 INFO L125 PetriNetUnfolderBase]: For 362458/366065 co-relation queries the response was YES. [2023-12-09 15:29:49,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273191 conditions, 23806 events. 10967/23806 cut-off events. For 362458/366065 co-relation queries the response was YES. Maximal size of possible extension queue 909. Compared 237314 event pairs, 412 based on Foata normal form. 193/22628 useless extension candidates. Maximal degree in co-relation 155882. Up to 14576 conditions per place. [2023-12-09 15:29:49,433 INFO L140 encePairwiseOnDemand]: 100/150 looper letters, 1703 selfloop transitions, 737 changer transitions 1455/3934 dead transitions. [2023-12-09 15:29:49,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 865 places, 3934 transitions, 111150 flow [2023-12-09 15:29:49,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2023-12-09 15:29:49,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2023-12-09 15:29:49,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 10325 transitions. [2023-12-09 15:29:49,443 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.35664939550949915 [2023-12-09 15:29:49,443 INFO L72 ComplementDD]: Start complementDD. Operand 193 states and 10325 transitions. [2023-12-09 15:29:49,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 193 states and 10325 transitions. [2023-12-09 15:29:49,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:29:49,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 193 states and 10325 transitions. [2023-12-09 15:29:49,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 194 states, 193 states have (on average 53.49740932642487) internal successors, (10325), 193 states have internal predecessors, (10325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:29:49,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 194 states, 194 states have (on average 150.0) internal successors, (29100), 194 states have internal predecessors, (29100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:29:49,476 INFO L81 ComplementDD]: Finished complementDD. Result has 194 states, 194 states have (on average 150.0) internal successors, (29100), 194 states have internal predecessors, (29100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:29:49,477 INFO L308 CegarLoopForPetriNet]: 135 programPoint places, 730 predicate places. [2023-12-09 15:29:49,477 INFO L500 AbstractCegarLoop]: Abstraction has has 865 places, 3934 transitions, 111150 flow [2023-12-09 15:29:49,477 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 50.88636363636363) internal successors, (4478), 88 states have internal predecessors, (4478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:29:49,477 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:29:49,478 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:29:49,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-09 15:29:49,683 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:29:49,683 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 15:29:49,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:29:49,684 INFO L85 PathProgramCache]: Analyzing trace with hash 501448495, now seen corresponding path program 3 times [2023-12-09 15:29:49,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:29:49,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846851906] [2023-12-09 15:29:49,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:29:49,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:29:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:29:51,126 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:29:51,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:29:51,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846851906] [2023-12-09 15:29:51,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846851906] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:29:51,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411704192] [2023-12-09 15:29:51,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:29:51,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:29:51,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:29:51,128 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 15:29:51,129 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 15:29:51,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:29:51,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:29:51,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-09 15:29:51,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:29:52,336 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:29:52,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:29:53,070 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:29:53,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 43 [2023-12-09 15:29:53,688 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:29:53,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411704192] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:29:53,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:29:53,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 22, 20] total 70 [2023-12-09 15:29:53,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311428053] [2023-12-09 15:29:53,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:29:53,689 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-09 15:29:53,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:29:53,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-09 15:29:53,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=4481, Unknown=0, NotChecked=0, Total=4830 [2023-12-09 15:29:53,695 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 150 [2023-12-09 15:29:53,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 865 places, 3934 transitions, 111150 flow. Second operand has 70 states, 70 states have (on average 51.48571428571429) internal successors, (3604), 70 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:29:53,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:29:53,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 150 [2023-12-09 15:29:53,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:30:20,436 INFO L124 PetriNetUnfolderBase]: 11661/25522 cut-off events. [2023-12-09 15:30:20,436 INFO L125 PetriNetUnfolderBase]: For 429365/433216 co-relation queries the response was YES. [2023-12-09 15:30:20,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314477 conditions, 25522 events. 11661/25522 cut-off events. For 429365/433216 co-relation queries the response was YES. Maximal size of possible extension queue 1005. Compared 258825 event pairs, 523 based on Foata normal form. 158/24262 useless extension candidates. Maximal degree in co-relation 174556. Up to 15636 conditions per place. [2023-12-09 15:30:20,742 INFO L140 encePairwiseOnDemand]: 105/150 looper letters, 2329 selfloop transitions, 724 changer transitions 1564/4656 dead transitions. [2023-12-09 15:30:20,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 964 places, 4656 transitions, 139021 flow [2023-12-09 15:30:20,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-12-09 15:30:20,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2023-12-09 15:30:20,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 5328 transitions. [2023-12-09 15:30:20,767 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3552 [2023-12-09 15:30:20,768 INFO L72 ComplementDD]: Start complementDD. Operand 100 states and 5328 transitions. [2023-12-09 15:30:20,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 100 states and 5328 transitions. [2023-12-09 15:30:20,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:30:20,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 100 states and 5328 transitions. [2023-12-09 15:30:20,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 101 states, 100 states have (on average 53.28) internal successors, (5328), 100 states have internal predecessors, (5328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:30:20,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 101 states, 101 states have (on average 150.0) internal successors, (15150), 101 states have internal predecessors, (15150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:30:20,794 INFO L81 ComplementDD]: Finished complementDD. Result has 101 states, 101 states have (on average 150.0) internal successors, (15150), 101 states have internal predecessors, (15150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:30:20,794 INFO L308 CegarLoopForPetriNet]: 135 programPoint places, 829 predicate places. [2023-12-09 15:30:20,794 INFO L500 AbstractCegarLoop]: Abstraction has has 964 places, 4656 transitions, 139021 flow [2023-12-09 15:30:20,795 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 51.48571428571429) internal successors, (3604), 70 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:30:20,795 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:30:20,796 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:30:20,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-09 15:30:21,001 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:30:21,004 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 15:30:21,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:30:21,004 INFO L85 PathProgramCache]: Analyzing trace with hash -39441195, now seen corresponding path program 4 times [2023-12-09 15:30:21,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:30:21,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445993352] [2023-12-09 15:30:21,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:30:21,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:30:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:30:22,327 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:30:22,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:30:22,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445993352] [2023-12-09 15:30:22,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445993352] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:30:22,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186766958] [2023-12-09 15:30:22,328 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:30:22,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:30:22,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:30:22,329 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 15:30:22,329 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 15:30:22,496 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:30:22,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:30:22,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-09 15:30:22,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:30:23,869 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-12-09 15:30:23,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2023-12-09 15:30:24,199 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:30:24,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:30:25,342 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:30:25,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32 [2023-12-09 15:30:28,194 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:30:28,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186766958] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:30:28,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:30:28,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 31, 31] total 89 [2023-12-09 15:30:28,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504458327] [2023-12-09 15:30:28,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:30:28,195 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2023-12-09 15:30:28,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:30:28,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2023-12-09 15:30:28,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=568, Invalid=7264, Unknown=0, NotChecked=0, Total=7832 [2023-12-09 15:30:28,199 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 150 [2023-12-09 15:30:28,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 964 places, 4656 transitions, 139021 flow. Second operand has 89 states, 89 states have (on average 50.842696629213485) internal successors, (4525), 89 states have internal predecessors, (4525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:30:28,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:30:28,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 150 [2023-12-09 15:30:28,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:31:28,342 INFO L124 PetriNetUnfolderBase]: 12825/27882 cut-off events. [2023-12-09 15:31:28,343 INFO L125 PetriNetUnfolderBase]: For 518356/523086 co-relation queries the response was YES. [2023-12-09 15:31:28,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369079 conditions, 27882 events. 12825/27882 cut-off events. For 518356/523086 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 286061 event pairs, 580 based on Foata normal form. 217/26601 useless extension candidates. Maximal degree in co-relation 212918. Up to 17198 conditions per place. [2023-12-09 15:31:28,700 INFO L140 encePairwiseOnDemand]: 102/150 looper letters, 2344 selfloop transitions, 1224 changer transitions 1716/5323 dead transitions. [2023-12-09 15:31:28,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1085 places, 5323 transitions, 168682 flow [2023-12-09 15:31:28,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2023-12-09 15:31:28,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2023-12-09 15:31:28,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 6540 transitions. [2023-12-09 15:31:28,706 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.35737704918032787 [2023-12-09 15:31:28,706 INFO L72 ComplementDD]: Start complementDD. Operand 122 states and 6540 transitions. [2023-12-09 15:31:28,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 6540 transitions. [2023-12-09 15:31:28,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:31:28,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 122 states and 6540 transitions. [2023-12-09 15:31:28,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 123 states, 122 states have (on average 53.60655737704918) internal successors, (6540), 122 states have internal predecessors, (6540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:31:28,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 123 states, 123 states have (on average 150.0) internal successors, (18450), 123 states have internal predecessors, (18450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:31:28,724 INFO L81 ComplementDD]: Finished complementDD. Result has 123 states, 123 states have (on average 150.0) internal successors, (18450), 123 states have internal predecessors, (18450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:31:28,724 INFO L308 CegarLoopForPetriNet]: 135 programPoint places, 950 predicate places. [2023-12-09 15:31:28,724 INFO L500 AbstractCegarLoop]: Abstraction has has 1085 places, 5323 transitions, 168682 flow [2023-12-09 15:31:28,725 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 50.842696629213485) internal successors, (4525), 89 states have internal predecessors, (4525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:31:28,725 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:31:28,725 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:28,730 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 15:31:28,930 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-09 15:31:28,930 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 15:31:28,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:31:28,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1212139099, now seen corresponding path program 5 times [2023-12-09 15:31:28,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:31:28,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502936662] [2023-12-09 15:31:28,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:31:28,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:31:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:31:30,297 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:31:30,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:31:30,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502936662] [2023-12-09 15:31:30,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502936662] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:31:30,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638987234] [2023-12-09 15:31:30,298 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:31:30,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:31:30,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:31:30,298 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:31:30,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-09 15:31:30,412 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-09 15:31:30,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:31:30,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-09 15:31:30,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:31:32,102 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:31:32,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:31:33,193 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:31:33,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 43 [2023-12-09 15:31:35,149 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:31:35,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638987234] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:31:35,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:31:35,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 32, 32] total 91 [2023-12-09 15:31:35,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030730927] [2023-12-09 15:31:35,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:31:35,150 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2023-12-09 15:31:35,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:31:35,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2023-12-09 15:31:35,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=7558, Unknown=0, NotChecked=0, Total=8190 [2023-12-09 15:31:35,154 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 150 [2023-12-09 15:31:35,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1085 places, 5323 transitions, 168682 flow. Second operand has 91 states, 91 states have (on average 50.76923076923077) internal successors, (4620), 91 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:31:35,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:31:35,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 150 [2023-12-09 15:31:35,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:31:54,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 15:32:07,242 WARN L293 SmtUtils]: Spent 7.43s on a formula simplification. DAG size of input: 73 DAG size of output: 58 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-09 15:32:09,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 15:32:11,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 15:32:31,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] Received shutdown request... [2023-12-09 15:32:32,030 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 15:32:32,030 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:32:32,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2023-12-09 15:32:32,035 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-09 15:32:32,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-09 15:32:32,240 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:32:32,240 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (91states, 48/150 universal loopers) in iteration 23,while PetriNetUnfolder was constructing finite prefix that currently has 152855 conditions, 10845 events (4805/10844 cut-off events. For 205978/208041 co-relation queries the response was YES. Maximal size of possible extension queue 970. Compared 112161 event pairs, 255 based on Foata normal form. 144/11449 useless extension candidates. Maximal degree in co-relation 90904. Up to 6289 conditions per place.). [2023-12-09 15:32:32,241 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-12-09 15:32:32,241 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-12-09 15:32:32,242 INFO L457 BasicCegarLoop]: Path program histogram: [11, 5, 3, 2, 1, 1] [2023-12-09 15:32:32,244 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:32:32,244 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:32:32,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:32:32 BasicIcfg [2023-12-09 15:32:32,247 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:32:32,247 INFO L158 Benchmark]: Toolchain (without parser) took 250811.87ms. Allocated memory was 208.7MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 156.7MB in the beginning and 802.5MB in the end (delta: -645.8MB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-09 15:32:32,247 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 208.7MB. Free memory is still 156.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:32:32,247 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.87ms. Allocated memory is still 208.7MB. Free memory was 156.7MB in the beginning and 144.7MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-09 15:32:32,247 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.15ms. Allocated memory is still 208.7MB. Free memory was 144.7MB in the beginning and 142.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:32:32,248 INFO L158 Benchmark]: Boogie Preprocessor took 20.23ms. Allocated memory is still 208.7MB. Free memory was 142.4MB in the beginning and 140.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:32:32,248 INFO L158 Benchmark]: RCFGBuilder took 542.49ms. Allocated memory is still 208.7MB. Free memory was 140.9MB in the beginning and 166.7MB in the end (delta: -25.8MB). Peak memory consumption was 19.1MB. Max. memory is 8.0GB. [2023-12-09 15:32:32,249 INFO L158 Benchmark]: TraceAbstraction took 250019.59ms. Allocated memory was 208.7MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 165.6MB in the beginning and 802.5MB in the end (delta: -636.8MB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-09 15:32:32,255 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 208.7MB. Free memory is still 156.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 195.87ms. Allocated memory is still 208.7MB. Free memory was 156.7MB in the beginning and 144.7MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.15ms. Allocated memory is still 208.7MB. Free memory was 144.7MB in the beginning and 142.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.23ms. Allocated memory is still 208.7MB. Free memory was 142.4MB in the beginning and 140.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 542.49ms. Allocated memory is still 208.7MB. Free memory was 140.9MB in the beginning and 166.7MB in the end (delta: -25.8MB). Peak memory consumption was 19.1MB. Max. memory is 8.0GB. * TraceAbstraction took 250019.59ms. Allocated memory was 208.7MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 165.6MB in the beginning and 802.5MB in the end (delta: -636.8MB). Peak memory consumption was 1.5GB. 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 (91states, 48/150 universal loopers) in iteration 23,while PetriNetUnfolder was constructing finite prefix that currently has 152855 conditions, 10845 events (4805/10844 cut-off events. For 205978/208041 co-relation queries the response was YES. Maximal size of possible extension queue 970. Compared 112161 event pairs, 255 based on Foata normal form. 144/11449 useless extension candidates. Maximal degree in co-relation 90904. Up to 6289 conditions per place.). - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (91states, 48/150 universal loopers) in iteration 23,while PetriNetUnfolder was constructing finite prefix that currently has 152855 conditions, 10845 events (4805/10844 cut-off events. For 205978/208041 co-relation queries the response was YES. Maximal size of possible extension queue 970. Compared 112161 event pairs, 255 based on Foata normal form. 144/11449 useless extension candidates. Maximal degree in co-relation 90904. Up to 6289 conditions per place.). - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (91states, 48/150 universal loopers) in iteration 23,while PetriNetUnfolder was constructing finite prefix that currently has 152855 conditions, 10845 events (4805/10844 cut-off events. For 205978/208041 co-relation queries the response was YES. Maximal size of possible extension queue 970. Compared 112161 event pairs, 255 based on Foata normal form. 144/11449 useless extension candidates. Maximal degree in co-relation 90904. Up to 6289 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 167 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 249.9s, OverallIterations: 23, TraceHistogramMax: 2, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 207.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 9164 SdHoareTripleChecker+Valid, 35.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9164 mSDsluCounter, 23946 SdHoareTripleChecker+Invalid, 32.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22677 mSDsCounter, 1620 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38121 IncrementalHoareTripleChecker+Invalid, 39742 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1620 mSolverCounterUnsat, 1269 mSDtfsCounter, 38121 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3575 GetRequests, 2040 SyntacticMatches, 12 SemanticMatches, 1523 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87865 ImplicationChecksByTransitivity, 96.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=168682occurred in iteration=22, InterpolantAutomatonStates: 973, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 38.1s InterpolantComputationTime, 4080 NumberOfCodeBlocks, 4064 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 5129 ConstructedInterpolants, 117 QuantifiedInterpolants, 62541 SizeOfPredicates, 194 NumberOfNonLiveVariables, 2689 ConjunctsInSsa, 303 ConjunctsInUnsatCore, 40 InterpolantComputations, 15 PerfectInterpolantSequences, 61/335 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