/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-incorrect05.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 13:37:57,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 13:37:57,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 13:37:57,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-21 13:37:57,089 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-FA-NoLbe.epf [2021-08-21 13:37:57,116 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 13:37:57,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 13:37:57,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-21 13:37:57,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-21 13:37:57,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 13:37:57,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 13:37:57,119 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 13:37:57,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 13:37:57,119 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 13:37:57,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 13:37:57,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 13:37:57,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 13:37:57,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 13:37:57,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 13:37:57,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 13:37:57,121 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 13:37:57,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 13:37:57,121 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 13:37:57,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 13:37:57,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 13:37:57,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 13:37:57,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 13:37:57,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 13:37:57,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 13:37:57,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 13:37:57,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 13:37:57,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 13:37:57,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 13:37:57,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 13:37:57,122 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 13:37:57,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 13:37:57,122 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 13:37:57,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 13:37:57,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 13:37:57,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 13:37:57,461 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-21 13:37:57,462 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-21 13:37:57,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-incorrect05.bpl [2021-08-21 13:37:57,463 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-incorrect05.bpl' [2021-08-21 13:37:57,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 13:37:57,479 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-21 13:37:57,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 13:37:57,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 13:37:57,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 13:37:57,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-incorrect05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:37:57" (1/1) ... [2021-08-21 13:37:57,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-incorrect05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:37:57" (1/1) ... [2021-08-21 13:37:57,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 13:37:57,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 13:37:57,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 13:37:57,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 13:37:57,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-incorrect05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:37:57" (1/1) ... [2021-08-21 13:37:57,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-incorrect05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:37:57" (1/1) ... [2021-08-21 13:37:57,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-incorrect05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:37:57" (1/1) ... [2021-08-21 13:37:57,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-incorrect05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:37:57" (1/1) ... [2021-08-21 13:37:57,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-incorrect05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:37:57" (1/1) ... [2021-08-21 13:37:57,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-incorrect05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:37:57" (1/1) ... [2021-08-21 13:37:57,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-incorrect05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:37:57" (1/1) ... [2021-08-21 13:37:57,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 13:37:57,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 13:37:57,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 13:37:57,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 13:37:57,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-incorrect05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:37:57" (1/1) ... [2021-08-21 13:37:57,528 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 13:37:57,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 13:37:57,558 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) [2021-08-21 13:37:57,561 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 [2021-08-21 13:37:57,584 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-08-21 13:37:57,584 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-08-21 13:37:57,584 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-08-21 13:37:57,584 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-08-21 13:37:57,584 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-08-21 13:37:57,585 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-08-21 13:37:57,585 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-08-21 13:37:57,585 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-08-21 13:37:57,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-08-21 13:37:57,585 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-21 13:37:57,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 13:37:57,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 13:37:57,587 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 13:37:57,831 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 13:37:57,831 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-08-21 13:37:57,833 INFO L202 PluginConnector]: Adding new model bluetooth-incorrect05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:37:57 BoogieIcfgContainer [2021-08-21 13:37:57,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 13:37:57,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 13:37:57,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 13:37:57,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 13:37:57,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-incorrect05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:37:57" (1/2) ... [2021-08-21 13:37:57,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8692db and model type bluetooth-incorrect05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:37:57, skipping insertion in model container [2021-08-21 13:37:57,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-incorrect05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:37:57" (2/2) ... [2021-08-21 13:37:57,838 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-incorrect05.bpl [2021-08-21 13:37:57,841 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 13:37:57,841 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 13:37:57,841 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 13:37:57,841 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 13:37:57,903 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-21 13:37:57,948 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 13:37:57,958 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=FINITE_AUTOMATA, 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 [2021-08-21 13:37:57,959 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-08-21 13:37:57,966 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 44 transitions, 118 flow [2021-08-21 13:37:59,161 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 18431 states, 18429 states have (on average 6.1745075695914045) internal successors, (113790), 18430 states have internal predecessors, (113790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:59,207 INFO L276 IsEmpty]: Start isEmpty. Operand has 18431 states, 18429 states have (on average 6.1745075695914045) internal successors, (113790), 18430 states have internal predecessors, (113790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:59,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-21 13:37:59,213 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:59,213 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:59,214 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-08-21 13:37:59,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:59,217 INFO L82 PathProgramCache]: Analyzing trace with hash -752326333, now seen corresponding path program 1 times [2021-08-21 13:37:59,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:59,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745819765] [2021-08-21 13:37:59,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:59,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:59,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:59,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:59,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745819765] [2021-08-21 13:37:59,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745819765] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:59,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:59,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-21 13:37:59,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416644789] [2021-08-21 13:37:59,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 13:37:59,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:59,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 13:37:59,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 13:37:59,392 INFO L87 Difference]: Start difference. First operand has 18431 states, 18429 states have (on average 6.1745075695914045) internal successors, (113790), 18430 states have internal predecessors, (113790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:59,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:59,919 INFO L93 Difference]: Finished difference Result 20989 states and 127399 transitions. [2021-08-21 13:37:59,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 13:37:59,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-21 13:37:59,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:00,185 INFO L225 Difference]: With dead ends: 20989 [2021-08-21 13:38:00,185 INFO L226 Difference]: Without dead ends: 15533 [2021-08-21 13:38:00,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 13:38:00,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15533 states. [2021-08-21 13:38:01,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15533 to 15533. [2021-08-21 13:38:01,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15533 states, 15532 states have (on average 6.111447334535153) internal successors, (94923), 15532 states have internal predecessors, (94923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:01,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15533 states to 15533 states and 94923 transitions. [2021-08-21 13:38:01,384 INFO L78 Accepts]: Start accepts. Automaton has 15533 states and 94923 transitions. Word has length 9 [2021-08-21 13:38:01,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:01,384 INFO L470 AbstractCegarLoop]: Abstraction has 15533 states and 94923 transitions. [2021-08-21 13:38:01,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:01,385 INFO L276 IsEmpty]: Start isEmpty. Operand 15533 states and 94923 transitions. [2021-08-21 13:38:01,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-21 13:38:01,393 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:01,393 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:01,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 13:38:01,394 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-08-21 13:38:01,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:01,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1931211013, now seen corresponding path program 1 times [2021-08-21 13:38:01,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:01,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444497342] [2021-08-21 13:38:01,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:01,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:01,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:38:01,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:01,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444497342] [2021-08-21 13:38:01,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444497342] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:01,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:01,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-21 13:38:01,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927150513] [2021-08-21 13:38:01,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 13:38:01,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:01,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 13:38:01,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 13:38:01,437 INFO L87 Difference]: Start difference. First operand 15533 states and 94923 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:01,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:01,820 INFO L93 Difference]: Finished difference Result 15533 states and 79420 transitions. [2021-08-21 13:38:01,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 13:38:01,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-21 13:38:01,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:01,973 INFO L225 Difference]: With dead ends: 15533 [2021-08-21 13:38:01,973 INFO L226 Difference]: Without dead ends: 9558 [2021-08-21 13:38:01,974 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 13:38:01,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9558 states. [2021-08-21 13:38:02,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9558 to 9558. [2021-08-21 13:38:02,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9558 states, 9557 states have (on average 5.041749502982108) internal successors, (48184), 9557 states have internal predecessors, (48184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:02,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9558 states to 9558 states and 48184 transitions. [2021-08-21 13:38:02,341 INFO L78 Accepts]: Start accepts. Automaton has 9558 states and 48184 transitions. Word has length 13 [2021-08-21 13:38:02,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:02,341 INFO L470 AbstractCegarLoop]: Abstraction has 9558 states and 48184 transitions. [2021-08-21 13:38:02,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:38:02,342 INFO L276 IsEmpty]: Start isEmpty. Operand 9558 states and 48184 transitions. [2021-08-21 13:38:02,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-21 13:38:02,344 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:02,344 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:02,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 13:38:02,345 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-08-21 13:38:02,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:02,345 INFO L82 PathProgramCache]: Analyzing trace with hash -303183739, now seen corresponding path program 2 times [2021-08-21 13:38:02,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:02,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988661374] [2021-08-21 13:38:02,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:02,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-21 13:38:02,352 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-21 13:38:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-21 13:38:02,367 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-21 13:38:02,367 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-21 13:38:02,368 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT [2021-08-21 13:38:02,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT [2021-08-21 13:38:02,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 13:38:02,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 13:38:02,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 13:38:02,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATION [2021-08-21 13:38:02,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4INUSE_VIOLATION [2021-08-21 13:38:02,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5INUSE_VIOLATION [2021-08-21 13:38:02,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 13:38:02,375 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 13:38:02,375 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 13:38:02,383 INFO L202 PluginConnector]: Adding new model bluetooth-incorrect05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:38:02 BasicIcfg [2021-08-21 13:38:02,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 13:38:02,385 INFO L168 Benchmark]: Toolchain (without parser) took 4904.91 ms. Allocated memory was 196.1 MB in the beginning and 4.1 GB in the end (delta: 4.0 GB). Free memory was 176.9 MB in the beginning and 3.7 GB in the end (delta: -3.5 GB). Peak memory consumption was 474.8 MB. Max. memory is 8.0 GB. [2021-08-21 13:38:02,385 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 196.1 MB. Free memory is still 177.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 13:38:02,386 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.82 ms. Allocated memory is still 196.1 MB. Free memory was 176.7 MB in the beginning and 174.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 13:38:02,386 INFO L168 Benchmark]: Boogie Preprocessor took 10.88 ms. Allocated memory is still 196.1 MB. Free memory was 174.9 MB in the beginning and 174.0 MB in the end (delta: 912.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 13:38:02,386 INFO L168 Benchmark]: RCFGBuilder took 312.13 ms. Allocated memory is still 196.1 MB. Free memory was 174.0 MB in the beginning and 159.1 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-08-21 13:38:02,387 INFO L168 Benchmark]: TraceAbstraction took 4549.44 ms. Allocated memory was 196.1 MB in the beginning and 4.1 GB in the end (delta: 4.0 GB). Free memory was 158.5 MB in the beginning and 3.7 GB in the end (delta: -3.5 GB). Peak memory consumption was 456.0 MB. Max. memory is 8.0 GB. [2021-08-21 13:38:02,388 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 0.10 ms. Allocated memory is still 196.1 MB. Free memory is still 177.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 28.82 ms. Allocated memory is still 196.1 MB. Free memory was 176.7 MB in the beginning and 174.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 10.88 ms. Allocated memory is still 196.1 MB. Free memory was 174.9 MB in the beginning and 174.0 MB in the end (delta: 912.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 312.13 ms. Allocated memory is still 196.1 MB. Free memory was 174.0 MB in the beginning and 159.1 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4549.44 ms. Allocated memory was 196.1 MB in the beginning and 4.1 GB in the end (delta: 4.0 GB). Free memory was 158.5 MB in the beginning and 3.7 GB in the end (delta: -3.5 GB). Peak memory consumption was 456.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 38]: 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] [L60] 2 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L82] 1 stoppingFlag := true; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L92] 1 pendingIo := pendingIo - 1; [L93] COND TRUE 1 pendingIo == 0 [L94] 1 stoppingEvent := true; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L84] 1 assume stoppingEvent; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L85] 1 stopped := true; VAL [pendingIo=0, stopped=true, stoppingEvent=true, stoppingFlag=true] [L61] 2 pendingIo := pendingIo + 1; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] [L38] 2 assert !stopped; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] - UnprovableResult [Line: 19]: 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. - UnprovableResult [Line: 21]: 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. - UnprovableResult [Line: 22]: 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. - UnprovableResult [Line: 19]: 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. - UnprovableResult [Line: 23]: 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. - 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 10 procedures, 62 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 4426.5ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 62.0ms, AutomataDifference: 1395.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1202.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 96 SDtfs, 50 SDslu, 53 SDs, 0 SdLazy, 9 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18431occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1554.5ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.5ms SsaConstructionTime, 20.8ms SatisfiabilityAnalysisTime, 61.7ms InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 27 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2021-08-21 13:38:02,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...