/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-POR-NewStatesSleepPersistentFixedOrder-Uncond-NoLbe-Random521.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-incorrect07.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2ce48c3f3f8970e6bfb7f04ced506932607c57fe-2ce48c3 [2021-10-25 07:53:11,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-25 07:53:11,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-25 07:53:11,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-25 07:53:11,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-25 07:53:11,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-25 07:53:11,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-25 07:53:11,733 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-POR-NewStatesSleepPersistentFixedOrder-Uncond-NoLbe-Random521.epf [2021-10-25 07:53:11,751 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-25 07:53:11,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-25 07:53:11,751 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-25 07:53:11,751 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-25 07:53:11,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-25 07:53:11,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-25 07:53:11,752 INFO L138 SettingsManager]: * Use SBE=true [2021-10-25 07:53:11,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-25 07:53:11,753 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-25 07:53:11,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-25 07:53:11,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-25 07:53:11,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-25 07:53:11,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-25 07:53:11,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-25 07:53:11,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-25 07:53:11,754 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-25 07:53:11,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-25 07:53:11,754 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-25 07:53:11,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-25 07:53:11,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-25 07:53:11,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-25 07:53:11,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-10-25 07:53:11,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-25 07:53:11,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-25 07:53:11,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-25 07:53:11,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-25 07:53:11,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-25 07:53:11,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-25 07:53:11,755 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-10-25 07:53:11,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-25 07:53:11,756 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-25 07:53:11,756 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-10-25 07:53:11,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-25 07:53:11,756 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2021-10-25 07:53:11,756 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-10-25 07:53:11,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-25 07:53:11,756 INFO L138 SettingsManager]: * Random seed used by POR DFS order=521 [2021-10-25 07:53:11,756 INFO L138 SettingsManager]: * Use conditional POR in concurrent analysis=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-25 07:53:11,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-25 07:53:11,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-25 07:53:11,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-25 07:53:11,972 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-10-25 07:53:11,984 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-10-25 07:53:11,984 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-incorrect07.bpl [2021-10-25 07:53:11,985 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-incorrect07.bpl' [2021-10-25 07:53:12,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-25 07:53:12,007 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-10-25 07:53:12,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-25 07:53:12,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-25 07:53:12,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-25 07:53:12,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:53:12" (1/1) ... [2021-10-25 07:53:12,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:53:12" (1/1) ... [2021-10-25 07:53:12,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-25 07:53:12,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-25 07:53:12,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-25 07:53:12,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-25 07:53:12,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:53:12" (1/1) ... [2021-10-25 07:53:12,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:53:12" (1/1) ... [2021-10-25 07:53:12,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:53:12" (1/1) ... [2021-10-25 07:53:12,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:53:12" (1/1) ... [2021-10-25 07:53:12,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:53:12" (1/1) ... [2021-10-25 07:53:12,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:53:12" (1/1) ... [2021-10-25 07:53:12,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:53:12" (1/1) ... [2021-10-25 07:53:12,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-25 07:53:12,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-25 07:53:12,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-25 07:53:12,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-25 07:53:12,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:53:12" (1/1) ... [2021-10-25 07:53:12,061 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-25 07:53:12,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-25 07:53:12,083 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) [2021-10-25 07:53:12,106 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 [2021-10-25 07:53:12,125 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-10-25 07:53:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-10-25 07:53:12,126 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-10-25 07:53:12,126 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-10-25 07:53:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-10-25 07:53:12,126 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-10-25 07:53:12,126 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-10-25 07:53:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-10-25 07:53:12,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-10-25 07:53:12,126 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-10-25 07:53:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-25 07:53:12,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-25 07:53:12,127 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-25 07:53:12,361 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-25 07:53:12,361 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-25 07:53:12,363 INFO L202 PluginConnector]: Adding new model bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:53:12 BoogieIcfgContainer [2021-10-25 07:53:12,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-25 07:53:12,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-25 07:53:12,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-25 07:53:12,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-25 07:53:12,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:53:12" (1/2) ... [2021-10-25 07:53:12,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301234ae and model type bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:53:12, skipping insertion in model container [2021-10-25 07:53:12,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:53:12" (2/2) ... [2021-10-25 07:53:12,389 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-incorrect07.bpl [2021-10-25 07:53:12,392 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-25 07:53:12,392 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-25 07:53:12,393 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-25 07:53:12,393 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-25 07:53:12,419 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-25 07:53:12,464 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-10-25 07:53:12,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-25 07:53:12,466 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) [2021-10-25 07:53:12,473 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 [2021-10-25 07:53:12,493 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-10-25 07:53:12,497 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, mConcurrency=PARTIAL_ORDER_FA, 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 [2021-10-25 07:53:12,497 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-10-25 07:53:23,899 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-25 07:53:23,899 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-25 07:53:23,900 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-25 07:53:23,902 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-25 07:53:23,911 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATION [2021-10-25 07:53:23,912 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5INUSE_VIOLATION [2021-10-25 07:53:23,912 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6INUSE_VIOLATION [2021-10-25 07:53:23,912 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7INUSE_VIOLATION [2021-10-25 07:53:23,920 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2021-10-25 07:53:23,923 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-10-25 07:53:23,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-25 07:53:23,929 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-10-25 07:53:23,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2021-10-25 07:53:23,944 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == DeviceThreadWithAssertThread1of1ForFork1 ======== [2021-10-25 07:53:23,945 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, mConcurrency=PARTIAL_ORDER_FA, 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 [2021-10-25 07:53:23,945 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-25 07:53:24,004 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT] === [2021-10-25 07:53:24,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-25 07:53:24,008 INFO L82 PathProgramCache]: Analyzing trace with hash 2145695867, now seen corresponding path program 1 times [2021-10-25 07:53:24,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-25 07:53:24,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520105607] [2021-10-25 07:53:24,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-25 07:53:24,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-25 07:53:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-25 07:53:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-25 07:53:24,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-25 07:53:24,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520105607] [2021-10-25 07:53:24,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520105607] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-25 07:53:24,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-25 07:53:24,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-25 07:53:24,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645096411] [2021-10-25 07:53:24,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-25 07:53:24,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-25 07:53:24,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-25 07:53:24,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-25 07:53:24,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-25 07:53:24,432 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-25 07:53:24,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-25 07:53:24,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-25 07:53:24,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-25 07:53:24,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-25 07:53:24,631 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT] === [2021-10-25 07:53:24,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-25 07:53:24,632 INFO L82 PathProgramCache]: Analyzing trace with hash -580358119, now seen corresponding path program 2 times [2021-10-25 07:53:24,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-25 07:53:24,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837250827] [2021-10-25 07:53:24,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-25 07:53:24,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-25 07:53:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-25 07:53:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-25 07:53:24,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-25 07:53:24,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837250827] [2021-10-25 07:53:24,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837250827] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-25 07:53:24,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-25 07:53:24,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-25 07:53:24,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098059254] [2021-10-25 07:53:24,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-25 07:53:24,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-25 07:53:24,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-25 07:53:24,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-25 07:53:24,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-25 07:53:24,703 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-25 07:53:24,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-25 07:53:24,703 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-25 07:53:24,703 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-25 07:53:24,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-25 07:53:24,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-25 07:53:24,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-25 07:53:24,718 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT] === [2021-10-25 07:53:24,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-25 07:53:24,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1256028211, now seen corresponding path program 1 times [2021-10-25 07:53:24,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-25 07:53:24,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987551549] [2021-10-25 07:53:24,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-25 07:53:24,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-25 07:53:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-25 07:53:24,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-25 07:53:24,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-25 07:53:24,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987551549] [2021-10-25 07:53:24,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987551549] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-25 07:53:24,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-25 07:53:24,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-25 07:53:24,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662244396] [2021-10-25 07:53:24,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-25 07:53:24,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-25 07:53:24,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-25 07:53:24,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-25 07:53:24,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-25 07:53:24,752 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-25 07:53:24,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-25 07:53:24,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-25 07:53:24,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-25 07:53:24,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-25 07:53:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-25 07:53:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-25 07:53:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-25 07:53:24,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-25 07:53:24,773 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT] === [2021-10-25 07:53:24,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-25 07:53:24,775 INFO L82 PathProgramCache]: Analyzing trace with hash 594702108, now seen corresponding path program 1 times [2021-10-25 07:53:24,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-25 07:53:24,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336906028] [2021-10-25 07:53:24,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-25 07:53:24,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-25 07:53:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-25 07:53:24,795 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-25 07:53:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-25 07:53:24,820 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-25 07:53:24,820 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-25 07:53:24,820 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT [2021-10-25 07:53:24,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-25 07:53:24,822 INFO L308 ceAbstractionStarter]: Result for error location DeviceThreadWithAssertThread1of1ForFork1 was UNSAFE (2/2) [2021-10-25 07:53:24,823 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-25 07:53:24,823 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-25 07:53:24,843 INFO L202 PluginConnector]: Adding new model bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 07:53:24 BasicIcfg [2021-10-25 07:53:24,843 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-25 07:53:24,849 INFO L168 Benchmark]: Toolchain (without parser) took 12836.70 ms. Allocated memory was 176.2 MB in the beginning and 3.9 GB in the end (delta: 3.7 GB). Free memory was 135.1 MB in the beginning and 3.5 GB in the end (delta: -3.4 GB). Peak memory consumption was 305.7 MB. Max. memory is 8.0 GB. [2021-10-25 07:53:24,849 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 176.2 MB. Free memory was 136.2 MB in the beginning and 136.1 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-25 07:53:24,849 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.20 ms. Allocated memory is still 176.2 MB. Free memory was 135.0 MB in the beginning and 133.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-10-25 07:53:24,850 INFO L168 Benchmark]: Boogie Preprocessor took 9.96 ms. Allocated memory is still 176.2 MB. Free memory was 133.2 MB in the beginning and 132.3 MB in the end (delta: 882.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-25 07:53:24,851 INFO L168 Benchmark]: RCFGBuilder took 317.38 ms. Allocated memory is still 176.2 MB. Free memory was 132.2 MB in the beginning and 117.7 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-25 07:53:24,851 INFO L168 Benchmark]: TraceAbstraction took 12479.27 ms. Allocated memory was 176.2 MB in the beginning and 3.9 GB in the end (delta: 3.7 GB). Free memory was 117.2 MB in the beginning and 3.5 GB in the end (delta: -3.4 GB). Peak memory consumption was 286.8 MB. Max. memory is 8.0 GB. [2021-10-25 07:53:24,854 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 0.12 ms. Allocated memory is still 176.2 MB. Free memory was 136.2 MB in the beginning and 136.1 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 26.20 ms. Allocated memory is still 176.2 MB. Free memory was 135.0 MB in the beginning and 133.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 9.96 ms. Allocated memory is still 176.2 MB. Free memory was 133.2 MB in the beginning and 132.3 MB in the end (delta: 882.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 317.38 ms. Allocated memory is still 176.2 MB. Free memory was 132.2 MB in the beginning and 117.7 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12479.27 ms. Allocated memory was 176.2 MB in the beginning and 3.9 GB in the end (delta: 3.7 GB). Free memory was 117.2 MB in the beginning and 3.5 GB in the end (delta: -3.4 GB). Peak memory consumption was 286.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 5129162, positive: 4590810, positive conditional: 4588381, positive unconditional: 2429, negative: 538352, negative conditional: 538251, negative unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 4943114, positive: 4590810, positive conditional: 0, positive unconditional: 4590810, negative: 352304, negative conditional: 0, negative unconditional: 352304, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2161, positive: 2060, positive conditional: 0, positive unconditional: 2060, negative: 101, negative conditional: 0, negative unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2161, positive: 1967, positive conditional: 0, positive unconditional: 1967, negative: 194, negative conditional: 0, negative unconditional: 194, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 194, positive: 93, positive conditional: 0, positive unconditional: 93, negative: 101, negative conditional: 0, negative unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 475, positive: 237, positive conditional: 0, positive unconditional: 237, negative: 238, negative conditional: 0, negative unconditional: 238, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4943114, positive: 4588750, positive conditional: 0, positive unconditional: 4588750, negative: 352203, negative conditional: 0, negative unconditional: 352203, unknown: 2161, unknown conditional: 0, unknown unconditional: 2161] , Statistics on independence cache: Total cache size (in pairs): 2161, Positive cache size: 2060, Positive conditional cache size: 0, Positive unconditional cache size: 2060, Negative cache size: 101, Negative conditional cache size: 0, Negative unconditional cache size: 101, Independence queries for same thread: 186048 - StatisticsResult: Persistent set benchmarks Persistent set computation time[ms]: 2286, Number of persistent set computation: 31445, Number of trivial persistent sets: 24913, Underlying independence relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 5129162, positive: 4590810, positive conditional: 4588381, positive unconditional: 2429, negative: 538352, negative conditional: 538251, negative unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 4943114, positive: 4590810, positive conditional: 0, positive unconditional: 4590810, negative: 352304, negative conditional: 0, negative unconditional: 352304, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2161, positive: 2060, positive conditional: 0, positive unconditional: 2060, negative: 101, negative conditional: 0, negative unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2161, positive: 1967, positive conditional: 0, positive unconditional: 1967, negative: 194, negative conditional: 0, negative unconditional: 194, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 194, positive: 93, positive conditional: 0, positive unconditional: 93, negative: 101, negative conditional: 0, negative unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 475, positive: 237, positive conditional: 0, positive unconditional: 237, negative: 238, negative conditional: 0, negative unconditional: 238, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4943114, positive: 4588750, positive conditional: 0, positive unconditional: 4588750, negative: 352203, negative conditional: 0, negative unconditional: 352203, unknown: 2161, unknown conditional: 0, unknown unconditional: 2161] , Statistics on independence cache: Total cache size (in pairs): 2161, Positive cache size: 2060, Positive conditional cache size: 0, Positive unconditional cache size: 2060, Negative cache size: 101, Negative conditional cache size: 0, Negative unconditional cache size: 101, Independence queries for same thread: 186048 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 12222, positive: 11457, positive conditional: 9926, positive unconditional: 1531, negative: 765, negative conditional: 741, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 11646, positive: 11457, positive conditional: 0, positive unconditional: 11457, negative: 189, negative conditional: 0, negative unconditional: 189, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1594, positive: 1570, positive conditional: 0, positive unconditional: 1570, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1594, positive: 1558, positive conditional: 0, positive unconditional: 1558, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 36, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 64, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11646, positive: 9887, positive conditional: 0, positive unconditional: 9887, negative: 165, negative conditional: 0, negative unconditional: 165, unknown: 1594, unknown conditional: 0, unknown unconditional: 1594] , Statistics on independence cache: Total cache size (in pairs): 1594, Positive cache size: 1570, Positive conditional cache size: 0, Positive unconditional cache size: 1570, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Independence queries for same thread: 576 - StatisticsResult: Persistent set benchmarks Persistent set computation time[ms]: 117, Number of persistent set computation: 297, Number of trivial persistent sets: 96, Underlying independence relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 12222, positive: 11457, positive conditional: 9926, positive unconditional: 1531, negative: 765, negative conditional: 741, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 11646, positive: 11457, positive conditional: 0, positive unconditional: 11457, negative: 189, negative conditional: 0, negative unconditional: 189, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1594, positive: 1570, positive conditional: 0, positive unconditional: 1570, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1594, positive: 1558, positive conditional: 0, positive unconditional: 1558, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 36, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 64, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11646, positive: 9887, positive conditional: 0, positive unconditional: 9887, negative: 165, negative conditional: 0, negative unconditional: 165, unknown: 1594, unknown conditional: 0, unknown unconditional: 1594] , Statistics on independence cache: Total cache size (in pairs): 1594, Positive cache size: 1570, Positive conditional cache size: 0, Positive unconditional cache size: 1570, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Independence queries for same thread: 576 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 40]: assertion can be violated assertion can be violated We found a FailurePath: [L14] 0 pendingIo := 1; VAL [pendingIo=1] [L15] 0 stopped := false; VAL [pendingIo=1, stopped=false] [L16] 0 stoppingEvent := false; VAL [pendingIo=1, stopped=false, stoppingEvent=false] [L17] 0 stoppingFlag := false; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L19] FORK 0 fork 0 ServerThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L21] FORK 0 fork 1 DeviceThreadWithAssert(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L22] FORK 0 fork 2 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L23] FORK 0 fork 3 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L24] FORK 0 fork 4 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L25] FORK 0 fork 5 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L26] FORK 0 fork 6 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L27] FORK 0 fork 7 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L62] 2 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L63] 2 pendingIo := pendingIo + 1; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L40] 2 assert !stopped; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L71] 2 pendingIo := pendingIo - 1; [L72] COND FALSE 2 !(pendingIo == 0) VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L62] 2 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L84] 1 stoppingFlag := true; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L94] 1 pendingIo := pendingIo - 1; [L95] COND TRUE 1 pendingIo == 0 [L96] 1 stoppingEvent := true; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L63] 2 pendingIo := pendingIo + 1; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L86] 1 assume stoppingEvent; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L87] 1 stopped := true; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] [L40] 2 assert !stopped; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 12 procedures, 74 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 11457.8ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 25.2ms, PartialOrderReductionTime: 11368.9ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: DeviceThreadWithAssertThread1of1ForFork1 with 1 thread instances CFG has 12 procedures, 74 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 898.7ms, OverallIterations: 4, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.0ms, PartialOrderReductionTime: 289.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.3ms SsaConstructionTime, 47.0ms SatisfiabilityAnalysisTime, 382.9ms InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 198 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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! [2021-10-25 07:53:24,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Forceful destruction successful, exit code 0 [2021-10-25 07:53:25,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2021-10-25 07:53:25,297 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...