/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/pthread/fib_safe-6.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 14:47:07,201 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 14:47:07,289 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 14:47:07,320 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 14:47:07,321 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 14:47:07,321 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 14:47:07,322 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 14:47:07,322 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 14:47:07,322 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 14:47:07,323 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 14:47:07,323 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 14:47:07,323 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 14:47:07,323 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 14:47:07,323 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 14:47:07,324 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 14:47:07,324 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 14:47:07,324 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 14:47:07,324 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 14:47:07,325 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 14:47:07,325 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 14:47:07,325 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 14:47:07,326 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 14:47:07,326 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 14:47:07,326 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 14:47:07,326 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 14:47:07,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:47:07,327 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 14:47:07,327 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 14:47:07,327 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 14:47:07,327 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 14:47:07,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 14:47:07,328 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 14:47:07,328 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 14:47:07,328 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 14:47:07,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 14:47:07,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 14:47:07,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 14:47:07,543 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 14:47:07,543 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 14:47:07,544 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_safe-6.i [2023-12-09 14:47:08,548 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 14:47:08,762 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 14:47:08,762 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-6.i [2023-12-09 14:47:08,775 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d999cc3ab/c6ec5a2a2b014d25a6d83ad2a77df31f/FLAGbe24a93d9 [2023-12-09 14:47:08,787 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d999cc3ab/c6ec5a2a2b014d25a6d83ad2a77df31f [2023-12-09 14:47:08,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 14:47:08,790 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 14:47:08,792 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 14:47:08,792 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 14:47:08,794 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 14:47:08,795 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:47:08" (1/1) ... [2023-12-09 14:47:08,796 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d64eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:08, skipping insertion in model container [2023-12-09 14:47:08,796 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:47:08" (1/1) ... [2023-12-09 14:47:08,841 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 14:47:09,062 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-6.i[30241,30254] [2023-12-09 14:47:09,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:47:09,092 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 14:47:09,135 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-6.i[30241,30254] [2023-12-09 14:47:09,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:47:09,166 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:47:09,166 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:47:09,171 INFO L206 MainTranslator]: Completed translation [2023-12-09 14:47:09,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09 WrapperNode [2023-12-09 14:47:09,173 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 14:47:09,174 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 14:47:09,175 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 14:47:09,175 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 14:47:09,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,206 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,219 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2023-12-09 14:47:09,219 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 14:47:09,222 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 14:47:09,222 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 14:47:09,222 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 14:47:09,227 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,232 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,233 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,247 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,250 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,251 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,251 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,253 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 14:47:09,254 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 14:47:09,254 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 14:47:09,254 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 14:47:09,254 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:47:09,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:09,279 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 14:47:09,299 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 14:47:09,304 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-12-09 14:47:09,304 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-12-09 14:47:09,305 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-12-09 14:47:09,305 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-12-09 14:47:09,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 14:47:09,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 14:47:09,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 14:47:09,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 14:47:09,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 14:47:09,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 14:47:09,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 14:47:09,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 14:47:09,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 14:47:09,307 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 14:47:09,442 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 14:47:09,444 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 14:47:09,568 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 14:47:09,577 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 14:47:09,577 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-09 14:47:09,578 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:47:09 BoogieIcfgContainer [2023-12-09 14:47:09,578 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 14:47:09,580 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 14:47:09,580 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 14:47:09,582 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 14:47:09,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:47:08" (1/3) ... [2023-12-09 14:47:09,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f42e1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:47:09, skipping insertion in model container [2023-12-09 14:47:09,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (2/3) ... [2023-12-09 14:47:09,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f42e1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:47:09, skipping insertion in model container [2023-12-09 14:47:09,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:47:09" (3/3) ... [2023-12-09 14:47:09,583 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-6.i [2023-12-09 14:47:09,595 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 14:47:09,595 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 14:47:09,595 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 14:47:09,639 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:47:09,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions, 200 flow [2023-12-09 14:47:09,751 INFO L124 PetriNetUnfolderBase]: 7/94 cut-off events. [2023-12-09 14:47:09,751 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:47:09,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 94 events. 7/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2023-12-09 14:47:09,756 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 96 transitions, 200 flow [2023-12-09 14:47:09,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 94 transitions, 194 flow [2023-12-09 14:47:09,765 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:47:09,770 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;@6e06c7d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:47:09,770 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 14:47:09,813 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:47:09,813 INFO L124 PetriNetUnfolderBase]: 6/80 cut-off events. [2023-12-09 14:47:09,813 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:47:09,813 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:09,814 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] [2023-12-09 14:47:09,814 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 14:47:09,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:09,817 INFO L85 PathProgramCache]: Analyzing trace with hash 721324376, now seen corresponding path program 1 times [2023-12-09 14:47:09,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:09,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362767016] [2023-12-09 14:47:09,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:09,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:10,149 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 14:47:10,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:10,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362767016] [2023-12-09 14:47:10,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362767016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:10,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:10,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 14:47:10,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976258390] [2023-12-09 14:47:10,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:10,172 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 14:47:10,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:10,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 14:47:10,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 14:47:10,198 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 96 [2023-12-09 14:47:10,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:10,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 96 [2023-12-09 14:47:10,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:10,239 INFO L124 PetriNetUnfolderBase]: 3/95 cut-off events. [2023-12-09 14:47:10,239 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 14:47:10,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 95 events. 3/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 18/109 useless extension candidates. Maximal degree in co-relation 80. Up to 6 conditions per place. [2023-12-09 14:47:10,241 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 9 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2023-12-09 14:47:10,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 92 transitions, 212 flow [2023-12-09 14:47:10,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 14:47:10,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 14:47:10,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2023-12-09 14:47:10,252 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9305555555555556 [2023-12-09 14:47:10,252 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2023-12-09 14:47:10,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2023-12-09 14:47:10,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:10,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2023-12-09 14:47:10,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,260 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,262 INFO L308 CegarLoopForPetriNet]: 94 programPoint places, 1 predicate places. [2023-12-09 14:47:10,263 INFO L500 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 212 flow [2023-12-09 14:47:10,263 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,263 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:10,263 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] [2023-12-09 14:47:10,263 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 14:47:10,264 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 14:47:10,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:10,264 INFO L85 PathProgramCache]: Analyzing trace with hash -544627393, now seen corresponding path program 1 times [2023-12-09 14:47:10,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:10,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921757121] [2023-12-09 14:47:10,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:10,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:10,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:10,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:10,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921757121] [2023-12-09 14:47:10,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921757121] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:10,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960776936] [2023-12-09 14:47:10,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:10,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:10,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:10,506 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 14:47:10,507 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 14:47:10,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:10,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-09 14:47:10,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:10,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:10,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:47:10,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:10,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960776936] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:47:10,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:47:10,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-12-09 14:47:10,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053760925] [2023-12-09 14:47:10,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:47:10,755 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 14:47:10,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:10,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 14:47:10,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-09 14:47:10,759 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 96 [2023-12-09 14:47:10,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 212 flow. Second operand has 10 states, 10 states have (on average 82.1) internal successors, (821), 10 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:10,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 96 [2023-12-09 14:47:10,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:10,853 INFO L124 PetriNetUnfolderBase]: 3/104 cut-off events. [2023-12-09 14:47:10,853 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-12-09 14:47:10,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 104 events. 3/104 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 111. Up to 10 conditions per place. [2023-12-09 14:47:10,855 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 11 selfloop transitions, 9 changer transitions 0/98 dead transitions. [2023-12-09 14:47:10,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 272 flow [2023-12-09 14:47:10,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 14:47:10,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 14:47:10,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 742 transitions. [2023-12-09 14:47:10,860 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8587962962962963 [2023-12-09 14:47:10,860 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 742 transitions. [2023-12-09 14:47:10,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 742 transitions. [2023-12-09 14:47:10,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:10,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 742 transitions. [2023-12-09 14:47:10,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 82.44444444444444) internal successors, (742), 9 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,869 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,870 INFO L308 CegarLoopForPetriNet]: 94 programPoint places, 9 predicate places. [2023-12-09 14:47:10,870 INFO L500 AbstractCegarLoop]: Abstraction has has 103 places, 98 transitions, 272 flow [2023-12-09 14:47:10,870 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 82.1) internal successors, (821), 10 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,870 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:10,871 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:10,892 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 14:47:11,083 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:11,083 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 14:47:11,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:11,084 INFO L85 PathProgramCache]: Analyzing trace with hash 587621151, now seen corresponding path program 2 times [2023-12-09 14:47:11,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:11,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480217571] [2023-12-09 14:47:11,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:11,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:11,389 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:11,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:11,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480217571] [2023-12-09 14:47:11,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480217571] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:11,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722544337] [2023-12-09 14:47:11,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 14:47:11,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:11,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:11,391 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 14:47:11,393 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 14:47:11,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 14:47:11,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:47:11,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-09 14:47:11,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:11,548 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:11,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:47:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:11,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722544337] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:47:11,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:47:11,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-12-09 14:47:11,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109529810] [2023-12-09 14:47:11,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:47:11,675 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-09 14:47:11,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:11,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-09 14:47:11,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-12-09 14:47:11,678 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 96 [2023-12-09 14:47:11,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 98 transitions, 272 flow. Second operand has 18 states, 18 states have (on average 82.05555555555556) internal successors, (1477), 18 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:11,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:11,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 96 [2023-12-09 14:47:11,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:11,913 INFO L124 PetriNetUnfolderBase]: 3/132 cut-off events. [2023-12-09 14:47:11,914 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-12-09 14:47:11,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 132 events. 3/132 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 201. Up to 22 conditions per place. [2023-12-09 14:47:11,919 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 15 selfloop transitions, 21 changer transitions 0/114 dead transitions. [2023-12-09 14:47:11,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 114 transitions, 432 flow [2023-12-09 14:47:11,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-09 14:47:11,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-12-09 14:47:11,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1720 transitions. [2023-12-09 14:47:11,927 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8531746031746031 [2023-12-09 14:47:11,927 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1720 transitions. [2023-12-09 14:47:11,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1720 transitions. [2023-12-09 14:47:11,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:11,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1720 transitions. [2023-12-09 14:47:11,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 81.9047619047619) internal successors, (1720), 21 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:11,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 96.0) internal successors, (2112), 22 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:11,938 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 96.0) internal successors, (2112), 22 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:11,940 INFO L308 CegarLoopForPetriNet]: 94 programPoint places, 29 predicate places. [2023-12-09 14:47:11,940 INFO L500 AbstractCegarLoop]: Abstraction has has 123 places, 114 transitions, 432 flow [2023-12-09 14:47:11,941 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 82.05555555555556) internal successors, (1477), 18 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:11,941 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:11,941 INFO L233 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:11,946 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 14:47:12,145 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,SelfDestructingSolverStorable2 [2023-12-09 14:47:12,146 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 14:47:12,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:12,148 INFO L85 PathProgramCache]: Analyzing trace with hash -838301985, now seen corresponding path program 3 times [2023-12-09 14:47:12,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:12,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139877169] [2023-12-09 14:47:12,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:12,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:12,544 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:12,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:12,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139877169] [2023-12-09 14:47:12,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139877169] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:12,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371203486] [2023-12-09 14:47:12,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 14:47:12,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:12,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:12,549 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 14:47:12,553 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 14:47:12,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-12-09 14:47:12,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:47:12,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 14:47:12,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:12,745 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:12,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:47:12,974 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:12,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371203486] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:47:12,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:47:12,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 31 [2023-12-09 14:47:12,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604540834] [2023-12-09 14:47:12,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:47:12,975 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-09 14:47:12,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:12,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-09 14:47:12,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2023-12-09 14:47:12,979 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 96 [2023-12-09 14:47:12,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 114 transitions, 432 flow. Second operand has 31 states, 31 states have (on average 82.09677419354838) internal successors, (2545), 31 states have internal predecessors, (2545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:12,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:12,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 96 [2023-12-09 14:47:12,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:13,448 INFO L124 PetriNetUnfolderBase]: 3/181 cut-off events. [2023-12-09 14:47:13,448 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2023-12-09 14:47:13,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 181 events. 3/181 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 389. Up to 43 conditions per place. [2023-12-09 14:47:13,450 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 22 selfloop transitions, 42 changer transitions 0/142 dead transitions. [2023-12-09 14:47:13,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 142 transitions, 770 flow [2023-12-09 14:47:13,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-09 14:47:13,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-12-09 14:47:13,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 3431 transitions. [2023-12-09 14:47:13,455 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8509424603174603 [2023-12-09 14:47:13,455 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 3431 transitions. [2023-12-09 14:47:13,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 3431 transitions. [2023-12-09 14:47:13,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:13,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 3431 transitions. [2023-12-09 14:47:13,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 81.69047619047619) internal successors, (3431), 42 states have internal predecessors, (3431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:13,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 96.0) internal successors, (4128), 43 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:13,466 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 96.0) internal successors, (4128), 43 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:13,466 INFO L308 CegarLoopForPetriNet]: 94 programPoint places, 70 predicate places. [2023-12-09 14:47:13,466 INFO L500 AbstractCegarLoop]: Abstraction has has 164 places, 142 transitions, 770 flow [2023-12-09 14:47:13,467 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 82.09677419354838) internal successors, (2545), 31 states have internal predecessors, (2545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:13,467 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:13,467 INFO L233 CegarLoopForPetriNet]: trace histogram [14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:13,472 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 14:47:13,671 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:13,671 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 14:47:13,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:13,672 INFO L85 PathProgramCache]: Analyzing trace with hash 2076361784, now seen corresponding path program 4 times [2023-12-09 14:47:13,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:13,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450520410] [2023-12-09 14:47:13,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:13,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:15,899 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:15,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:15,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450520410] [2023-12-09 14:47:15,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450520410] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:15,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655057236] [2023-12-09 14:47:15,900 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 14:47:15,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:15,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:15,910 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 14:47:15,952 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 14:47:16,050 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 14:47:16,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:47:16,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-09 14:47:16,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:19,422 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 486 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:19,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:47:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:22,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655057236] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:47:22,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:47:22,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 145 [2023-12-09 14:47:22,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859010264] [2023-12-09 14:47:22,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:47:22,831 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 145 states [2023-12-09 14:47:22,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:22,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2023-12-09 14:47:22,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1256, Invalid=19624, Unknown=0, NotChecked=0, Total=20880 [2023-12-09 14:47:22,870 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 96 [2023-12-09 14:47:22,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 142 transitions, 770 flow. Second operand has 145 states, 145 states have (on average 62.241379310344826) internal successors, (9025), 145 states have internal predecessors, (9025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:22,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:22,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 96 [2023-12-09 14:47:22,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:51:02,456 INFO L124 PetriNetUnfolderBase]: 39474/132608 cut-off events. [2023-12-09 14:51:02,456 INFO L125 PetriNetUnfolderBase]: For 14343/14343 co-relation queries the response was YES. [2023-12-09 14:51:03,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227059 conditions, 132608 events. 39474/132608 cut-off events. For 14343/14343 co-relation queries the response was YES. Maximal size of possible extension queue 1923. Compared 1857476 event pairs, 0 based on Foata normal form. 0/123017 useless extension candidates. Maximal degree in co-relation 227006. Up to 19777 conditions per place. [2023-12-09 14:51:03,530 INFO L140 encePairwiseOnDemand]: 76/96 looper letters, 1461 selfloop transitions, 2230 changer transitions 1921/5716 dead transitions. [2023-12-09 14:51:03,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1188 places, 5716 transitions, 23203 flow [2023-12-09 14:51:03,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1025 states. [2023-12-09 14:51:03,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2023-12-09 14:51:03,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 68233 transitions. [2023-12-09 14:51:03,599 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6934247967479675 [2023-12-09 14:51:03,599 INFO L72 ComplementDD]: Start complementDD. Operand 1025 states and 68233 transitions. [2023-12-09 14:51:03,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1025 states and 68233 transitions. [2023-12-09 14:51:03,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:51:03,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 1025 states and 68233 transitions. [2023-12-09 14:51:03,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 1026 states, 1025 states have (on average 66.56878048780487) internal successors, (68233), 1025 states have internal predecessors, (68233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:03,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 1026 states, 1026 states have (on average 96.0) internal successors, (98496), 1026 states have internal predecessors, (98496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:03,881 INFO L81 ComplementDD]: Finished complementDD. Result has 1026 states, 1026 states have (on average 96.0) internal successors, (98496), 1026 states have internal predecessors, (98496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:03,884 INFO L308 CegarLoopForPetriNet]: 94 programPoint places, 1094 predicate places. [2023-12-09 14:51:03,884 INFO L500 AbstractCegarLoop]: Abstraction has has 1188 places, 5716 transitions, 23203 flow [2023-12-09 14:51:03,886 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 145 states, 145 states have (on average 62.241379310344826) internal successors, (9025), 145 states have internal predecessors, (9025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:03,886 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:03,886 INFO L233 CegarLoopForPetriNet]: trace histogram [14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:51:03,905 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 14:51:04,091 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:51:04,093 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 14:51:04,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:04,096 INFO L85 PathProgramCache]: Analyzing trace with hash 237574926, now seen corresponding path program 1 times [2023-12-09 14:51:04,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:04,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486542386] [2023-12-09 14:51:04,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:04,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:06,236 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:51:06,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:06,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486542386] [2023-12-09 14:51:06,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486542386] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:51:06,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443309404] [2023-12-09 14:51:06,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:06,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:51:06,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:51:06,248 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 14:51:06,250 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 14:51:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:06,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-09 14:51:06,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:51:08,935 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 486 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:51:08,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:51:12,576 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:51:12,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443309404] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:51:12,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:51:12,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 153 [2023-12-09 14:51:12,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75280192] [2023-12-09 14:51:12,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:51:12,577 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 153 states [2023-12-09 14:51:12,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:12,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2023-12-09 14:51:12,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=21981, Unknown=0, NotChecked=0, Total=23256 [2023-12-09 14:51:12,587 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 96 [2023-12-09 14:51:12,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1188 places, 5716 transitions, 23203 flow. Second operand has 153 states, 153 states have (on average 62.23529411764706) internal successors, (9522), 153 states have internal predecessors, (9522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:12,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:12,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 96 [2023-12-09 14:51:12,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-12-09 14:51:34,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2023-12-09 14:51:34,655 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-09 14:51:34,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-09 14:51:34,698 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 14:51:34,699 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 14:51:34,855 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:51:34,855 WARN L624 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantifier-free) to 251 known predicates. [2023-12-09 14:51:34,857 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-12-09 14:51:34,857 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-12-09 14:51:34,857 INFO L457 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-12-09 14:51:34,860 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 14:51:34,860 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 14:51:34,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:51:34 BasicIcfg [2023-12-09 14:51:34,863 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 14:51:34,863 INFO L158 Benchmark]: Toolchain (without parser) took 266072.73ms. Allocated memory was 369.1MB in the beginning and 4.7GB in the end (delta: 4.3GB). Free memory was 308.9MB in the beginning and 3.6GB in the end (delta: -3.3GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-09 14:51:34,863 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 201.3MB. Free memory is still 151.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 14:51:34,864 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.04ms. Allocated memory is still 369.1MB. Free memory was 308.6MB in the beginning and 288.9MB in the end (delta: 19.7MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-09 14:51:34,864 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.32ms. Allocated memory is still 369.1MB. Free memory was 288.9MB in the beginning and 286.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 14:51:34,865 INFO L158 Benchmark]: Boogie Preprocessor took 31.19ms. Allocated memory is still 369.1MB. Free memory was 286.8MB in the beginning and 285.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 14:51:34,865 INFO L158 Benchmark]: RCFGBuilder took 324.64ms. Allocated memory is still 369.1MB. Free memory was 285.1MB in the beginning and 271.5MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-09 14:51:34,865 INFO L158 Benchmark]: TraceAbstraction took 265283.05ms. Allocated memory was 369.1MB in the beginning and 4.7GB in the end (delta: 4.3GB). Free memory was 270.8MB in the beginning and 3.6GB in the end (delta: -3.3GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-09 14:51:34,867 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 201.3MB. Free memory is still 151.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 382.04ms. Allocated memory is still 369.1MB. Free memory was 308.6MB in the beginning and 288.9MB in the end (delta: 19.7MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.32ms. Allocated memory is still 369.1MB. Free memory was 288.9MB in the beginning and 286.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.19ms. Allocated memory is still 369.1MB. Free memory was 286.8MB in the beginning and 285.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 324.64ms. Allocated memory is still 369.1MB. Free memory was 285.1MB in the beginning and 271.5MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 265283.05ms. Allocated memory was 369.1MB in the beginning and 4.7GB in the end (delta: 4.3GB). Free memory was 270.8MB in the beginning and 3.6GB in the end (delta: -3.3GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 681]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 251 known predicates. - TimeoutResultAtElement [Line: 721]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 251 known predicates. - TimeoutResultAtElement [Line: 720]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 251 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 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: 265.2s, OverallIterations: 6, TraceHistogramMax: 14, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 244.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13709 SdHoareTripleChecker+Valid, 13.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13709 mSDsluCounter, 10289 SdHoareTripleChecker+Invalid, 11.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10239 mSDsCounter, 6089 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29424 IncrementalHoareTripleChecker+Invalid, 35513 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6089 mSolverCounterUnsat, 50 mSDtfsCounter, 29424 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2338 GetRequests, 835 SyntacticMatches, 7 SemanticMatches, 1495 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600367 ImplicationChecksByTransitivity, 218.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23203occurred in iteration=5, InterpolantAutomatonStates: 1100, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 18.9s InterpolantComputationTime, 1112 NumberOfCodeBlocks, 1112 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1627 ConstructedInterpolants, 0 QuantifiedInterpolants, 13092 SizeOfPredicates, 118 NumberOfNonLiveVariables, 1156 ConjunctsInSsa, 135 ConjunctsInUnsatCore, 16 InterpolantComputations, 1 PerfectInterpolantSequences, 972/4443 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