/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/single_assertion_test.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-820ea7a [2022-02-20 03:06:14,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 03:06:14,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 03:06:14,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 03:06:14,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 03:06:14,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 03:06:14,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 03:06:14,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 03:06:14,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 03:06:14,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 03:06:14,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 03:06:14,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 03:06:14,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 03:06:14,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 03:06:14,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 03:06:14,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 03:06:14,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 03:06:14,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 03:06:14,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 03:06:14,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 03:06:14,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 03:06:14,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 03:06:14,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 03:06:14,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 03:06:14,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 03:06:14,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 03:06:14,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 03:06:14,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 03:06:14,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 03:06:14,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 03:06:14,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 03:06:14,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 03:06:14,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 03:06:14,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 03:06:14,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 03:06:14,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 03:06:14,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 03:06:14,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 03:06:14,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 03:06:14,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 03:06:14,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 03:06:14,793 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-Lazy.epf [2022-02-20 03:06:14,823 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 03:06:14,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 03:06:14,824 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 03:06:14,824 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 03:06:14,825 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 03:06:14,825 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 03:06:14,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 03:06:14,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 03:06:14,825 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 03:06:14,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 03:06:14,826 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 03:06:14,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 03:06:14,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 03:06:14,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 03:06:14,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 03:06:14,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 03:06:14,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 03:06:14,827 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 03:06:14,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 03:06:14,827 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 03:06:14,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 03:06:14,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 03:06:14,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 03:06:14,828 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-20 03:06:14,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 03:06:14,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 03:06:14,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 03:06:14,829 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-20 03:06:14,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 03:06:14,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 03:06:14,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 03:06:14,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 03:06:14,830 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 03:06:14,830 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-20 03:06:14,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 03:06:14,830 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-20 03:06:14,830 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-20 03:06:15,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 03:06:15,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 03:06:15,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 03:06:15,053 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-20 03:06:15,054 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-20 03:06:15,055 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/single_assertion_test.bpl [2022-02-20 03:06:15,055 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/single_assertion_test.bpl' [2022-02-20 03:06:15,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 03:06:15,069 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-20 03:06:15,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 03:06:15,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 03:06:15,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 03:06:15,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 03:06:15" (1/1) ... [2022-02-20 03:06:15,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 03:06:15" (1/1) ... [2022-02-20 03:06:15,087 INFO L137 Inliner]: procedures = 2, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-20 03:06:15,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 03:06:15,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 03:06:15,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 03:06:15,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 03:06:15,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 03:06:15" (1/1) ... [2022-02-20 03:06:15,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 03:06:15" (1/1) ... [2022-02-20 03:06:15,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 03:06:15" (1/1) ... [2022-02-20 03:06:15,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 03:06:15" (1/1) ... [2022-02-20 03:06:15,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 03:06:15" (1/1) ... [2022-02-20 03:06:15,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 03:06:15" (1/1) ... [2022-02-20 03:06:15,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 03:06:15" (1/1) ... [2022-02-20 03:06:15,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 03:06:15,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 03:06:15,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 03:06:15,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 03:06:15,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 03:06:15" (1/1) ... [2022-02-20 03:06:15,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 03:06:15,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 03:06:15,126 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) [2022-02-20 03:06:15,139 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 [2022-02-20 03:06:15,159 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-20 03:06:15,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 03:06:15,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 03:06:15,159 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread given in one single declaration [2022-02-20 03:06:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-02-20 03:06:15,160 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-02-20 03:06:15,160 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-20 03:06:15,209 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 03:06:15,211 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 03:06:15,263 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 03:06:15,267 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 03:06:15,267 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-20 03:06:15,269 INFO L202 PluginConnector]: Adding new model single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 03:06:15 BoogieIcfgContainer [2022-02-20 03:06:15,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 03:06:15,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 03:06:15,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 03:06:15,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 03:06:15,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 03:06:15" (1/2) ... [2022-02-20 03:06:15,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6397ba and model type single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 03:06:15, skipping insertion in model container [2022-02-20 03:06:15,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 03:06:15" (2/2) ... [2022-02-20 03:06:15,280 INFO L111 eAbstractionObserver]: Analyzing ICFG single_assertion_test.bpl [2022-02-20 03:06:15,283 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-20 03:06:15,283 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 03:06:15,283 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-20 03:06:15,284 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-20 03:06:15,312 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 03:06:15,312 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 03:06:15,312 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 03:06:15,312 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 03:06:15,316 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-20 03:06:15,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-20 03:06:15,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 03:06:15,362 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-20 03:06:15,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-02-20 03:06:15,390 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 03:06:15,395 INFO L339 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=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-02-20 03:06:15,395 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-20 03:06:15,442 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 15 transitions and produced 16 states. [2022-02-20 03:06:15,444 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-02-20 03:06:15,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 03:06:15,448 INFO L85 PathProgramCache]: Analyzing trace with hash 43331864, now seen corresponding path program 1 times [2022-02-20 03:06:15,466 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 03:06:15,467 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433692845] [2022-02-20 03:06:15,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 03:06:15,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 03:06:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 03:06:15,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 03:06:15,587 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 03:06:15,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433692845] [2022-02-20 03:06:15,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433692845] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-20 03:06:15,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573999123] [2022-02-20 03:06:15,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 03:06:15,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 03:06:15,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 03:06:15,589 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) [2022-02-20 03:06:15,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-20 03:06:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 03:06:15,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-20 03:06:15,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 03:06:15,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 03:06:15,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-20 03:06:15,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 03:06:15,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573999123] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-20 03:06:15,833 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-20 03:06:15,833 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2022-02-20 03:06:15,835 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317283621] [2022-02-20 03:06:15,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-20 03:06:15,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-20 03:06:15,850 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 03:06:15,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-20 03:06:15,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-20 03:06:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 03:06:15,892 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-20 03:06:15,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 03:06:15,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-20 03:06:15,925 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 18 transitions and produced 19 states. [2022-02-20 03:06:15,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-20 03:06:15,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-02-20 03:06:16,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-02-20 03:06:16,142 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-02-20 03:06:16,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 03:06:16,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1307749510, now seen corresponding path program 1 times [2022-02-20 03:06:16,143 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 03:06:16,143 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106784831] [2022-02-20 03:06:16,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 03:06:16,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 03:06:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 03:06:16,150 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 03:06:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 03:06:16,161 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 03:06:16,161 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 03:06:16,162 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 4 remaining) [2022-02-20 03:06:16,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 4 remaining) [2022-02-20 03:06:16,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 4 remaining) [2022-02-20 03:06:16,164 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 4 remaining) [2022-02-20 03:06:16,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-20 03:06:16,168 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-20 03:06:16,169 WARN L235 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-02-20 03:06:16,169 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-02-20 03:06:16,172 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 03:06:16,172 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 03:06:16,172 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 03:06:16,172 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 03:06:16,173 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 03:06:16,173 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 03:06:16,173 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 03:06:16,173 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 03:06:16,174 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-02-20 03:06:16,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-20 03:06:16,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 03:06:16,177 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-20 03:06:16,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2022-02-20 03:06:16,182 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 03:06:16,183 INFO L339 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=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-02-20 03:06:16,183 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-02-20 03:06:16,187 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 15 transitions and produced 16 states. [2022-02-20 03:06:16,187 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-02-20 03:06:16,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 03:06:16,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1095125660, now seen corresponding path program 1 times [2022-02-20 03:06:16,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 03:06:16,188 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143717694] [2022-02-20 03:06:16,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 03:06:16,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 03:06:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 03:06:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 03:06:16,215 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 03:06:16,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143717694] [2022-02-20 03:06:16,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143717694] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-20 03:06:16,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603134201] [2022-02-20 03:06:16,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 03:06:16,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 03:06:16,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 03:06:16,268 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) [2022-02-20 03:06:16,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-20 03:06:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 03:06:16,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-20 03:06:16,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 03:06:16,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 03:06:16,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-20 03:06:16,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 03:06:16,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603134201] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-20 03:06:16,389 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-20 03:06:16,389 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2022-02-20 03:06:16,389 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168701859] [2022-02-20 03:06:16,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-20 03:06:16,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-20 03:06:16,390 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 03:06:16,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-20 03:06:16,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-20 03:06:16,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 03:06:16,391 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-20 03:06:16,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 03:06:16,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-20 03:06:16,416 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 28 transitions and produced 29 states. [2022-02-20 03:06:16,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-20 03:06:16,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-20 03:06:16,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 03:06:16,640 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-02-20 03:06:16,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 03:06:16,641 INFO L85 PathProgramCache]: Analyzing trace with hash 490899392, now seen corresponding path program 1 times [2022-02-20 03:06:16,641 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 03:06:16,641 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888347615] [2022-02-20 03:06:16,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 03:06:16,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 03:06:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 03:06:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 03:06:16,703 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 03:06:16,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888347615] [2022-02-20 03:06:16,703 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888347615] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 03:06:16,703 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 03:06:16,704 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-20 03:06:16,704 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684921185] [2022-02-20 03:06:16,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 03:06:16,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-20 03:06:16,705 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 03:06:16,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-20 03:06:16,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-20 03:06:16,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 03:06:16,705 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-20 03:06:16,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 03:06:16,715 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-02-20 03:06:16,716 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-20 03:06:16,753 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 28 transitions and produced 29 states. [2022-02-20 03:06:16,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-20 03:06:16,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-20 03:06:16,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-20 03:06:16,754 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-02-20 03:06:16,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 03:06:16,755 INFO L85 PathProgramCache]: Analyzing trace with hash 490900353, now seen corresponding path program 1 times [2022-02-20 03:06:16,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 03:06:16,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663459627] [2022-02-20 03:06:16,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 03:06:16,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 03:06:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 03:06:16,775 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 03:06:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 03:06:16,781 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 03:06:16,782 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 03:06:16,782 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location threadErr0ASSERT_VIOLATIONASSERT (4 of 5 remaining) [2022-02-20 03:06:16,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 5 remaining) [2022-02-20 03:06:16,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 5 remaining) [2022-02-20 03:06:16,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 5 remaining) [2022-02-20 03:06:16,783 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 5 remaining) [2022-02-20 03:06:16,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-20 03:06:16,784 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-20 03:06:16,789 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2022-02-20 03:06:16,789 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 03:06:16,834 INFO L202 PluginConnector]: Adding new model single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.02 03:06:16 BasicIcfg [2022-02-20 03:06:16,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-20 03:06:16,835 INFO L158 Benchmark]: Toolchain (without parser) took 1765.07ms. Allocated memory was 183.5MB in the beginning and 278.9MB in the end (delta: 95.4MB). Free memory was 144.0MB in the beginning and 222.4MB in the end (delta: -78.4MB). Peak memory consumption was 16.4MB. Max. memory is 8.0GB. [2022-02-20 03:06:16,835 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.09ms. Allocated memory is still 183.5MB. Free memory is still 145.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-20 03:06:16,835 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.96ms. Allocated memory is still 183.5MB. Free memory was 144.0MB in the beginning and 142.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-20 03:06:16,836 INFO L158 Benchmark]: Boogie Preprocessor took 10.32ms. Allocated memory is still 183.5MB. Free memory was 142.4MB in the beginning and 141.5MB in the end (delta: 939.5kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-20 03:06:16,836 INFO L158 Benchmark]: RCFGBuilder took 169.18ms. Allocated memory is still 183.5MB. Free memory was 141.4MB in the beginning and 133.3MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-20 03:06:16,836 INFO L158 Benchmark]: TraceAbstraction took 1564.13ms. Allocated memory was 183.5MB in the beginning and 278.9MB in the end (delta: 95.4MB). Free memory was 132.8MB in the beginning and 222.4MB in the end (delta: -89.6MB). Peak memory consumption was 4.9MB. Max. memory is 8.0GB. [2022-02-20 03:06:16,838 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.09ms. Allocated memory is still 183.5MB. Free memory is still 145.0MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 17.96ms. Allocated memory is still 183.5MB. Free memory was 144.0MB in the beginning and 142.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 10.32ms. Allocated memory is still 183.5MB. Free memory was 142.4MB in the beginning and 141.5MB in the end (delta: 939.5kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 169.18ms. Allocated memory is still 183.5MB. Free memory was 141.4MB in the beginning and 133.3MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1564.13ms. Allocated memory was 183.5MB in the beginning and 278.9MB in the end (delta: 95.4MB). Free memory was 132.8MB in the beginning and 222.4MB in the end (delta: -89.6MB). Peak memory consumption was 4.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 41]: assertion can be violated assertion can be violated We found a FailurePath: [L19] 0 x := 0; VAL [x=0] [L21] 0 i := 0; VAL [i=0, x=0] [L22] COND TRUE 0 i < 2 VAL [i=0, x=0] [L24] FORK 0 fork i thread(i); VAL [i=0, i=0, x=0] [L25] 0 i := i + 1; VAL [i=0, i=1, x=0] [L22] COND TRUE 0 i < 2 VAL [i=0, i=1, x=0] [L38] 1 x := x + 1; VAL [i=0, i=1, x=1] [L41] 1 assert i == 0; VAL [i=0, i=1, x=1] [L24] FORK 0 fork i thread(i); VAL [i=1, i=1, x=1] [L25] 0 i := i + 1; VAL [i=1, i=2, x=1] [L22] COND FALSE 0 !(i < 2) VAL [i=1, i=2, x=1] [L38] 2 x := x + 1; VAL [i=1, i=2, x=2] [L41] 2 assert i == 0; VAL [i=1, i=2, x=2] - UnprovableResult [Line: 32]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 22 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 5, 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: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 153 SizeOfPredicates, 1 NumberOfNonLiveVariables, 17 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 3 InterpolantComputations, 0 PerfectInterpolantSequences, 0/3 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 27 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 10, 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: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 186 SizeOfPredicates, 1 NumberOfNonLiveVariables, 17 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 5/8 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 proved your program to be incorrect! [2022-02-20 03:06:16,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Forceful destruction successful, exit code 0 [2022-02-20 03:06:17,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2022-02-20 03:06:17,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...