/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-incorrect06.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 13:37:57,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 13:37:57,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 13:37:57,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-21 13:37:57,703 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 13:37:57,733 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 13:37:57,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 13:37:57,734 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-21 13:37:57,734 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-21 13:37:57,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 13:37:57,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 13:37:57,737 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 13:37:57,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 13:37:57,737 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 13:37:57,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 13:37:57,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 13:37:57,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 13:37:57,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 13:37:57,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 13:37:57,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 13:37:57,739 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 13:37:57,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 13:37:57,739 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 13:37:57,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 13:37:57,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 13:37:57,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 13:37:57,740 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 13:37:57,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 13:37:57,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 13:37:57,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 13:37:57,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 13:37:57,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 13:37:57,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 13:37:57,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 13:37:57,741 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 13:37:57,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 13:37:57,741 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 13:37:58,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 13:37:58,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 13:37:58,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 13:37:58,046 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-21 13:37:58,048 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-21 13:37:58,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-incorrect06.bpl [2021-08-21 13:37:58,049 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-incorrect06.bpl' [2021-08-21 13:37:58,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 13:37:58,084 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-21 13:37:58,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 13:37:58,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 13:37:58,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 13:37:58,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:37:58" (1/1) ... [2021-08-21 13:37:58,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:37:58" (1/1) ... [2021-08-21 13:37:58,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 13:37:58,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 13:37:58,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 13:37:58,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 13:37:58,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:37:58" (1/1) ... [2021-08-21 13:37:58,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:37:58" (1/1) ... [2021-08-21 13:37:58,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:37:58" (1/1) ... [2021-08-21 13:37:58,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:37:58" (1/1) ... [2021-08-21 13:37:58,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:37:58" (1/1) ... [2021-08-21 13:37:58,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:37:58" (1/1) ... [2021-08-21 13:37:58,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:37:58" (1/1) ... [2021-08-21 13:37:58,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 13:37:58,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 13:37:58,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 13:37:58,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 13:37:58,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:37:58" (1/1) ... [2021-08-21 13:37:58,136 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 13:37:58,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 13:37:58,165 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 13:37:58,170 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 13:37:58,202 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-08-21 13:37:58,203 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-08-21 13:37:58,203 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-08-21 13:37:58,203 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-08-21 13:37:58,203 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-08-21 13:37:58,203 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-08-21 13:37:58,203 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-08-21 13:37:58,203 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-08-21 13:37:58,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-08-21 13:37:58,204 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-21 13:37:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 13:37:58,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 13:37:58,205 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 13:37:58,372 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 13:37:58,373 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-08-21 13:37:58,374 INFO L202 PluginConnector]: Adding new model bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:37:58 BoogieIcfgContainer [2021-08-21 13:37:58,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 13:37:58,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 13:37:58,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 13:37:58,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 13:37:58,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:37:58" (1/2) ... [2021-08-21 13:37:58,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545be70e and model type bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:37:58, skipping insertion in model container [2021-08-21 13:37:58,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:37:58" (2/2) ... [2021-08-21 13:37:58,388 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-incorrect06.bpl [2021-08-21 13:37:58,392 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 13:37:58,392 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 13:37:58,392 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 13:37:58,392 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 13:37:58,438 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-21 13:37:58,487 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 13:37:58,493 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 13:37:58,493 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-08-21 13:37:58,501 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 66 places, 50 transitions, 135 flow [2021-08-21 13:38:01,693 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 73727 states, 73725 states have (on average 7.173875890132249) internal successors, (528894), 73726 states have internal predecessors, (528894), 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 13:38:01,926 INFO L276 IsEmpty]: Start isEmpty. Operand has 73727 states, 73725 states have (on average 7.173875890132249) internal successors, (528894), 73726 states have internal predecessors, (528894), 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 13:38:01,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-21 13:38:01,933 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:01,933 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:01,934 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 5 more)] === [2021-08-21 13:38:01,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:01,944 INFO L82 PathProgramCache]: Analyzing trace with hash 173096233, now seen corresponding path program 1 times [2021-08-21 13:38:01,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:01,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964931359] [2021-08-21 13:38:01,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:01,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:02,058 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 13:38:02,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:02,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964931359] [2021-08-21 13:38:02,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964931359] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:02,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:02,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-21 13:38:02,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335048690] [2021-08-21 13:38:02,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 13:38:02,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:02,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 13:38:02,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 13:38:02,233 INFO L87 Difference]: Start difference. First operand has 73727 states, 73725 states have (on average 7.173875890132249) internal successors, (528894), 73726 states have internal predecessors, (528894), 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 13:38:04,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:04,603 INFO L93 Difference]: Finished difference Result 83965 states and 593575 transitions. [2021-08-21 13:38:04,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 13:38:04,605 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 13:38:04,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:05,465 INFO L225 Difference]: With dead ends: 83965 [2021-08-21 13:38:05,465 INFO L226 Difference]: Without dead ends: 62125 [2021-08-21 13:38:05,466 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 13:38:05,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62125 states. [2021-08-21 13:38:09,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62125 to 62125. [2021-08-21 13:38:09,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62125 states, 62124 states have (on average 7.11163157555856) internal successors, (441803), 62124 states have internal predecessors, (441803), 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 13:38:10,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62125 states to 62125 states and 441803 transitions. [2021-08-21 13:38:10,545 INFO L78 Accepts]: Start accepts. Automaton has 62125 states and 441803 transitions. Word has length 9 [2021-08-21 13:38:10,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:10,546 INFO L470 AbstractCegarLoop]: Abstraction has 62125 states and 441803 transitions. [2021-08-21 13:38:10,546 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 13:38:10,546 INFO L276 IsEmpty]: Start isEmpty. Operand 62125 states and 441803 transitions. [2021-08-21 13:38:10,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-21 13:38:10,553 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:10,553 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:10,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 13:38:10,554 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 5 more)] === [2021-08-21 13:38:10,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:10,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1666303783, now seen corresponding path program 1 times [2021-08-21 13:38:10,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:10,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785208769] [2021-08-21 13:38:10,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:10,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:10,574 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 13:38:10,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:10,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785208769] [2021-08-21 13:38:10,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785208769] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:10,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:10,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-21 13:38:10,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696526967] [2021-08-21 13:38:10,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 13:38:10,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:10,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 13:38:10,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 13:38:10,577 INFO L87 Difference]: Start difference. First operand 62125 states and 441803 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 13:38:11,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:11,613 INFO L93 Difference]: Finished difference Result 62125 states and 366652 transitions. [2021-08-21 13:38:11,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 13:38:11,614 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 13:38:11,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:11,988 INFO L225 Difference]: With dead ends: 62125 [2021-08-21 13:38:11,988 INFO L226 Difference]: Without dead ends: 38230 [2021-08-21 13:38:11,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 13:38:12,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38230 states. [2021-08-21 13:38:13,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38230 to 38230. [2021-08-21 13:38:14,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38230 states, 38229 states have (on average 5.854194459703367) internal successors, (223800), 38229 states have internal predecessors, (223800), 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 13:38:14,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38230 states to 38230 states and 223800 transitions. [2021-08-21 13:38:14,598 INFO L78 Accepts]: Start accepts. Automaton has 38230 states and 223800 transitions. Word has length 13 [2021-08-21 13:38:14,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:14,599 INFO L470 AbstractCegarLoop]: Abstraction has 38230 states and 223800 transitions. [2021-08-21 13:38:14,599 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 13:38:14,599 INFO L276 IsEmpty]: Start isEmpty. Operand 38230 states and 223800 transitions. [2021-08-21 13:38:14,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-21 13:38:14,603 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:14,603 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:14,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 13:38:14,603 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 5 more)] === [2021-08-21 13:38:14,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:14,604 INFO L82 PathProgramCache]: Analyzing trace with hash -651563097, now seen corresponding path program 2 times [2021-08-21 13:38:14,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:14,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810700964] [2021-08-21 13:38:14,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:14,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:38:14,664 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 13:38:14,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:38:14,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810700964] [2021-08-21 13:38:14,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810700964] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:38:14,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:38:14,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-21 13:38:14,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859781157] [2021-08-21 13:38:14,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 13:38:14,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:38:14,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 13:38:14,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-21 13:38:14,666 INFO L87 Difference]: Start difference. First operand 38230 states and 223800 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 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 13:38:15,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:38:15,986 INFO L93 Difference]: Finished difference Result 71833 states and 429559 transitions. [2021-08-21 13:38:15,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-21 13:38:15,987 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 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 13:38:15,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:38:16,942 INFO L225 Difference]: With dead ends: 71833 [2021-08-21 13:38:16,942 INFO L226 Difference]: Without dead ends: 71225 [2021-08-21 13:38:16,943 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 16.6ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-21 13:38:17,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71225 states. [2021-08-21 13:38:19,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71225 to 70501. [2021-08-21 13:38:20,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70501 states, 70500 states have (on average 6.001418439716312) internal successors, (423100), 70500 states have internal predecessors, (423100), 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 13:38:20,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70501 states to 70501 states and 423100 transitions. [2021-08-21 13:38:20,918 INFO L78 Accepts]: Start accepts. Automaton has 70501 states and 423100 transitions. Word has length 13 [2021-08-21 13:38:20,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:38:20,918 INFO L470 AbstractCegarLoop]: Abstraction has 70501 states and 423100 transitions. [2021-08-21 13:38:20,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 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 13:38:20,919 INFO L276 IsEmpty]: Start isEmpty. Operand 70501 states and 423100 transitions. [2021-08-21 13:38:20,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-21 13:38:20,922 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:38:20,922 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:38:20,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 13:38:20,922 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 5 more)] === [2021-08-21 13:38:20,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:38:20,923 INFO L82 PathProgramCache]: Analyzing trace with hash 35715273, now seen corresponding path program 3 times [2021-08-21 13:38:20,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:38:20,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861443412] [2021-08-21 13:38:20,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:38:20,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:38:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-21 13:38:20,929 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-21 13:38:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-21 13:38:20,946 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-21 13:38:20,946 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-21 13:38:20,947 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT [2021-08-21 13:38:20,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT [2021-08-21 13:38:20,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 13:38:20,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 13:38:20,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 13:38:20,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATION [2021-08-21 13:38:20,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4INUSE_VIOLATION [2021-08-21 13:38:20,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5INUSE_VIOLATION [2021-08-21 13:38:20,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6INUSE_VIOLATION [2021-08-21 13:38:20,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 13:38:20,955 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 13:38:20,955 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 13:38:20,963 INFO L202 PluginConnector]: Adding new model bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:38:20 BasicIcfg [2021-08-21 13:38:20,963 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 13:38:20,964 INFO L168 Benchmark]: Toolchain (without parser) took 22880.25 ms. Allocated memory was 182.5 MB in the beginning and 7.4 GB in the end (delta: 7.3 GB). Free memory was 162.7 MB in the beginning and 5.0 GB in the end (delta: -4.9 GB). Peak memory consumption was 2.4 GB. Max. memory is 8.0 GB. [2021-08-21 13:38:20,965 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 182.5 MB. Free memory is still 163.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 13:38:20,965 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.42 ms. Allocated memory is still 182.5 MB. Free memory was 162.6 MB in the beginning and 160.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 13:38:20,965 INFO L168 Benchmark]: Boogie Preprocessor took 13.19 ms. Allocated memory is still 182.5 MB. Free memory was 160.8 MB in the beginning and 159.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 13:38:20,966 INFO L168 Benchmark]: RCFGBuilder took 245.67 ms. Allocated memory is still 182.5 MB. Free memory was 159.7 MB in the beginning and 145.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-08-21 13:38:20,966 INFO L168 Benchmark]: TraceAbstraction took 22587.77 ms. Allocated memory was 182.5 MB in the beginning and 7.4 GB in the end (delta: 7.3 GB). Free memory was 144.7 MB in the beginning and 5.0 GB in the end (delta: -4.9 GB). Peak memory consumption was 2.4 GB. Max. memory is 8.0 GB. [2021-08-21 13:38:20,968 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 0.09 ms. Allocated memory is still 182.5 MB. Free memory is still 163.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 29.42 ms. Allocated memory is still 182.5 MB. Free memory was 162.6 MB in the beginning and 160.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.19 ms. Allocated memory is still 182.5 MB. Free memory was 160.8 MB in the beginning and 159.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 245.67 ms. Allocated memory is still 182.5 MB. Free memory was 159.7 MB in the beginning and 145.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 22587.77 ms. Allocated memory was 182.5 MB in the beginning and 7.4 GB in the end (delta: 7.3 GB). Free memory was 144.7 MB in the beginning and 5.0 GB in the end (delta: -4.9 GB). Peak memory consumption was 2.4 GB. 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: 39]: 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] [L61] 2 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L83] 1 stoppingFlag := true; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L93] 1 pendingIo := pendingIo - 1; [L94] COND TRUE 1 pendingIo == 0 [L95] 1 stoppingEvent := true; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L62] 2 pendingIo := pendingIo + 1; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L85] 1 assume stoppingEvent; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L86] 1 stopped := true; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] [L39] 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: 25]: 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: 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: 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: 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. - 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 11 procedures, 68 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 22466.4ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 253.0ms, AutomataDifference: 7090.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3199.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 157 SDtfs, 106 SDslu, 160 SDs, 0 SdLazy, 74 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 24.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=73727occurred 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: 11653.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 724 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.9ms SsaConstructionTime, 25.9ms SatisfiabilityAnalysisTime, 108.8ms InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 79 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! [2021-08-21 13:38:20,994 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...