/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-correct03.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-06 15:38:54,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-06 15:38:54,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-06 15:38:54,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-06 15:38:54,082 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 [2021-08-06 15:38:54,101 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-06 15:38:54,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-06 15:38:54,101 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-06 15:38:54,101 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-06 15:38:54,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-06 15:38:54,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-06 15:38:54,103 INFO L138 SettingsManager]: * Use SBE=true [2021-08-06 15:38:54,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-06 15:38:54,104 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-06 15:38:54,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-06 15:38:54,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-06 15:38:54,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-06 15:38:54,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-06 15:38:54,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-06 15:38:54,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-06 15:38:54,105 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-06 15:38:54,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-06 15:38:54,105 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-06 15:38:54,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-06 15:38:54,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-06 15:38:54,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-06 15:38:54,105 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-06 15:38:54,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-06 15:38:54,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 15:38:54,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-06 15:38:54,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-06 15:38:54,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-06 15:38:54,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-06 15:38:54,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-06 15:38:54,106 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-06 15:38:54,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-06 15:38:54,106 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-06 15:38:54,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-06 15:38:54,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-06 15:38:54,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-06 15:38:54,396 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-06 15:38:54,396 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-06 15:38:54,397 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct03.bpl [2021-08-06 15:38:54,397 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct03.bpl' [2021-08-06 15:38:54,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-06 15:38:54,415 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-06 15:38:54,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-06 15:38:54,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-06 15:38:54,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-06 15:38:54,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 03:38:54" (1/1) ... [2021-08-06 15:38:54,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 03:38:54" (1/1) ... [2021-08-06 15:38:54,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-06 15:38:54,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-06 15:38:54,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-06 15:38:54,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-06 15:38:54,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 03:38:54" (1/1) ... [2021-08-06 15:38:54,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 03:38:54" (1/1) ... [2021-08-06 15:38:54,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 03:38:54" (1/1) ... [2021-08-06 15:38:54,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 03:38:54" (1/1) ... [2021-08-06 15:38:54,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 03:38:54" (1/1) ... [2021-08-06 15:38:54,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 03:38:54" (1/1) ... [2021-08-06 15:38:54,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 03:38:54" (1/1) ... [2021-08-06 15:38:54,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-06 15:38:54,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-06 15:38:54,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-06 15:38:54,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-06 15:38:54,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 03:38:54" (1/1) ... [2021-08-06 15:38:54,459 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 15:38:54,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 15:38:54,493 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) [2021-08-06 15:38:54,498 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 [2021-08-06 15:38:54,525 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-08-06 15:38:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-08-06 15:38:54,525 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-08-06 15:38:54,525 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-08-06 15:38:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-08-06 15:38:54,526 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-08-06 15:38:54,526 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-08-06 15:38:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-08-06 15:38:54,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-08-06 15:38:54,526 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-06 15:38:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-06 15:38:54,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-06 15:38:54,527 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-06 15:38:54,709 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-06 15:38:54,709 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-08-06 15:38:54,710 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadWithAssertEXIT is neither atomic block end nor error location. [2021-08-06 15:38:54,710 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-08-06 15:38:54,711 INFO L202 PluginConnector]: Adding new model bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 03:38:54 BoogieIcfgContainer [2021-08-06 15:38:54,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-06 15:38:54,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-06 15:38:54,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-06 15:38:54,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-06 15:38:54,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 03:38:54" (1/2) ... [2021-08-06 15:38:54,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c7fb05 and model type bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 03:38:54, skipping insertion in model container [2021-08-06 15:38:54,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 03:38:54" (2/2) ... [2021-08-06 15:38:54,716 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-correct03.bpl [2021-08-06 15:38:54,719 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-06 15:38:54,719 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-06 15:38:54,719 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-06 15:38:54,719 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-06 15:38:54,742 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-06 15:38:54,774 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 15:38:54,779 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 [2021-08-06 15:38:54,779 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-06 15:38:54,786 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 29 transitions, 78 flow [2021-08-06 15:38:54,806 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 131 states, 129 states have (on average 2.75968992248062) internal successors, (356), 130 states have internal predecessors, (356), 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) [2021-08-06 15:38:54,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 2.75968992248062) internal successors, (356), 130 states have internal predecessors, (356), 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) [2021-08-06 15:38:54,813 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-06 15:38:54,815 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 15:38:54,815 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-06 15:38:54,815 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-06 15:38:54,815 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-08-06 15:38:54,818 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE,SAFE,SAFE,SAFE (1/2) [2021-08-06 15:38:54,821 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == DeviceThreadWithAssertThread1of1ForFork1 ======== [2021-08-06 15:38:54,822 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 [2021-08-06 15:38:54,822 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-06 15:38:54,823 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 29 transitions, 78 flow [2021-08-06 15:38:54,854 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 539 states, 538 states have (on average 4.148698884758364) internal successors, (2232), 538 states have internal predecessors, (2232), 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) [2021-08-06 15:38:54,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 539 states, 538 states have (on average 4.148698884758364) internal successors, (2232), 538 states have internal predecessors, (2232), 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) [2021-08-06 15:38:54,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-06 15:38:54,858 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 15:38:54,858 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 15:38:54,859 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT] === [2021-08-06 15:38:54,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 15:38:54,863 INFO L82 PathProgramCache]: Analyzing trace with hash -179373266, now seen corresponding path program 1 times [2021-08-06 15:38:54,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 15:38:54,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96544413] [2021-08-06 15:38:54,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 15:38:54,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 15:38:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 15:38:54,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 15:38:54,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 15:38:54,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96544413] [2021-08-06 15:38:54,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96544413] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 15:38:54,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 15:38:54,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-06 15:38:54,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155766156] [2021-08-06 15:38:54,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-06 15:38:54,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 15:38:54,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-06 15:38:54,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 15:38:54,985 INFO L87 Difference]: Start difference. First operand has 539 states, 538 states have (on average 4.148698884758364) internal successors, (2232), 538 states have internal predecessors, (2232), 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 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 15:38:55,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 15:38:55,035 INFO L93 Difference]: Finished difference Result 583 states and 2358 transitions. [2021-08-06 15:38:55,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-06 15:38:55,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-06 15:38:55,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 15:38:55,057 INFO L225 Difference]: With dead ends: 583 [2021-08-06 15:38:55,057 INFO L226 Difference]: Without dead ends: 451 [2021-08-06 15:38:55,058 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 15:38:55,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-08-06 15:38:55,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2021-08-06 15:38:55,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 4.0088888888888885) internal successors, (1804), 450 states have internal predecessors, (1804), 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) [2021-08-06 15:38:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 1804 transitions. [2021-08-06 15:38:55,138 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 1804 transitions. Word has length 8 [2021-08-06 15:38:55,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 15:38:55,139 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 1804 transitions. [2021-08-06 15:38:55,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 15:38:55,139 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 1804 transitions. [2021-08-06 15:38:55,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-06 15:38:55,144 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 15:38:55,145 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 15:38:55,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-06 15:38:55,145 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT] === [2021-08-06 15:38:55,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 15:38:55,152 INFO L82 PathProgramCache]: Analyzing trace with hash -566190484, now seen corresponding path program 1 times [2021-08-06 15:38:55,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 15:38:55,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793685739] [2021-08-06 15:38:55,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 15:38:55,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 15:38:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 15:38:55,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 15:38:55,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 15:38:55,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793685739] [2021-08-06 15:38:55,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793685739] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 15:38:55,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 15:38:55,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-06 15:38:55,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959310939] [2021-08-06 15:38:55,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-06 15:38:55,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 15:38:55,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-06 15:38:55,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 15:38:55,194 INFO L87 Difference]: Start difference. First operand 451 states and 1804 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-08-06 15:38:55,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 15:38:55,221 INFO L93 Difference]: Finished difference Result 451 states and 1473 transitions. [2021-08-06 15:38:55,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-06 15:38:55,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2021-08-06 15:38:55,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 15:38:55,226 INFO L225 Difference]: With dead ends: 451 [2021-08-06 15:38:55,226 INFO L226 Difference]: Without dead ends: 226 [2021-08-06 15:38:55,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 15:38:55,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-08-06 15:38:55,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-08-06 15:38:55,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 3.008888888888889) internal successors, (677), 225 states have internal predecessors, (677), 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) [2021-08-06 15:38:55,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 677 transitions. [2021-08-06 15:38:55,234 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 677 transitions. Word has length 12 [2021-08-06 15:38:55,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 15:38:55,234 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 677 transitions. [2021-08-06 15:38:55,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-08-06 15:38:55,234 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 677 transitions. [2021-08-06 15:38:55,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-06 15:38:55,235 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 15:38:55,235 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 15:38:55,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-06 15:38:55,235 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT] === [2021-08-06 15:38:55,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 15:38:55,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1922039020, now seen corresponding path program 2 times [2021-08-06 15:38:55,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 15:38:55,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333198643] [2021-08-06 15:38:55,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 15:38:55,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 15:38:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 15:38:55,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 15:38:55,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 15:38:55,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333198643] [2021-08-06 15:38:55,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333198643] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 15:38:55,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 15:38:55,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-06 15:38:55,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941832372] [2021-08-06 15:38:55,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 15:38:55,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 15:38:55,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 15:38:55,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-06 15:38:55,341 INFO L87 Difference]: Start difference. First operand 226 states and 677 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-08-06 15:38:55,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 15:38:55,394 INFO L93 Difference]: Finished difference Result 391 states and 1229 transitions. [2021-08-06 15:38:55,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-06 15:38:55,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2021-08-06 15:38:55,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 15:38:55,396 INFO L225 Difference]: With dead ends: 391 [2021-08-06 15:38:55,396 INFO L226 Difference]: Without dead ends: 363 [2021-08-06 15:38:55,397 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 19.0ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-06 15:38:55,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-08-06 15:38:55,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 333. [2021-08-06 15:38:55,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 3.2319277108433737) internal successors, (1073), 332 states have internal predecessors, (1073), 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) [2021-08-06 15:38:55,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 1073 transitions. [2021-08-06 15:38:55,406 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 1073 transitions. Word has length 12 [2021-08-06 15:38:55,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 15:38:55,406 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 1073 transitions. [2021-08-06 15:38:55,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-08-06 15:38:55,407 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 1073 transitions. [2021-08-06 15:38:55,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-06 15:38:55,407 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 15:38:55,408 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 15:38:55,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-06 15:38:55,408 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT] === [2021-08-06 15:38:55,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 15:38:55,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1995512329, now seen corresponding path program 1 times [2021-08-06 15:38:55,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 15:38:55,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363195011] [2021-08-06 15:38:55,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 15:38:55,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 15:38:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 15:38:55,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 15:38:55,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 15:38:55,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363195011] [2021-08-06 15:38:55,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363195011] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 15:38:55,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 15:38:55,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 15:38:55,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923120430] [2021-08-06 15:38:55,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 15:38:55,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 15:38:55,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 15:38:55,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-08-06 15:38:55,471 INFO L87 Difference]: Start difference. First operand 333 states and 1073 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-08-06 15:38:55,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 15:38:55,518 INFO L93 Difference]: Finished difference Result 474 states and 1544 transitions. [2021-08-06 15:38:55,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-06 15:38:55,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 15 [2021-08-06 15:38:55,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 15:38:55,520 INFO L225 Difference]: With dead ends: 474 [2021-08-06 15:38:55,520 INFO L226 Difference]: Without dead ends: 344 [2021-08-06 15:38:55,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 19.5ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-08-06 15:38:55,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-08-06 15:38:55,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 277. [2021-08-06 15:38:55,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 3.213768115942029) internal successors, (887), 276 states have internal predecessors, (887), 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) [2021-08-06 15:38:55,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 887 transitions. [2021-08-06 15:38:55,529 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 887 transitions. Word has length 15 [2021-08-06 15:38:55,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 15:38:55,530 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 887 transitions. [2021-08-06 15:38:55,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-08-06 15:38:55,530 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 887 transitions. [2021-08-06 15:38:55,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-06 15:38:55,531 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 15:38:55,531 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 15:38:55,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-06 15:38:55,531 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT] === [2021-08-06 15:38:55,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 15:38:55,531 INFO L82 PathProgramCache]: Analyzing trace with hash -386080214, now seen corresponding path program 1 times [2021-08-06 15:38:55,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 15:38:55,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750230661] [2021-08-06 15:38:55,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 15:38:55,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 15:38:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 15:38:55,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 15:38:55,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 15:38:55,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750230661] [2021-08-06 15:38:55,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750230661] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 15:38:55,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 15:38:55,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 15:38:55,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830420784] [2021-08-06 15:38:55,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 15:38:55,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 15:38:55,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 15:38:55,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-08-06 15:38:55,639 INFO L87 Difference]: Start difference. First operand 277 states and 887 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-08-06 15:38:55,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 15:38:55,680 INFO L93 Difference]: Finished difference Result 187 states and 614 transitions. [2021-08-06 15:38:55,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-06 15:38:55,680 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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 18 [2021-08-06 15:38:55,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 15:38:55,680 INFO L225 Difference]: With dead ends: 187 [2021-08-06 15:38:55,680 INFO L226 Difference]: Without dead ends: 0 [2021-08-06 15:38:55,681 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 32.4ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-08-06 15:38:55,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-06 15:38:55,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-06 15:38:55,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-08-06 15:38:55,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-06 15:38:55,681 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-08-06 15:38:55,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 15:38:55,681 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-06 15:38:55,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-08-06 15:38:55,682 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-06 15:38:55,682 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-06 15:38:55,682 INFO L764 garLoopResultBuilder]: Registering result SAFE for location DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT [2021-08-06 15:38:55,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-06 15:38:55,682 INFO L308 ceAbstractionStarter]: Result for error location DeviceThreadWithAssertThread1of1ForFork1 was SAFE (2/2) [2021-08-06 15:38:55,683 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-06 15:38:55,683 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-06 15:38:55,689 INFO L202 PluginConnector]: Adding new model bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.08 03:38:55 BasicIcfg [2021-08-06 15:38:55,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-06 15:38:55,690 INFO L168 Benchmark]: Toolchain (without parser) took 1274.65 ms. Allocated memory is still 194.0 MB. Free memory was 175.0 MB in the beginning and 150.5 MB in the end (delta: 24.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 8.0 GB. [2021-08-06 15:38:55,691 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 194.0 MB. Free memory is still 176.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-06 15:38:55,692 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.88 ms. Allocated memory is still 194.0 MB. Free memory was 174.8 MB in the beginning and 173.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-06 15:38:55,692 INFO L168 Benchmark]: Boogie Preprocessor took 10.15 ms. Allocated memory is still 194.0 MB. Free memory was 173.0 MB in the beginning and 172.0 MB in the end (delta: 985.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-06 15:38:55,694 INFO L168 Benchmark]: RCFGBuilder took 258.07 ms. Allocated memory is still 194.0 MB. Free memory was 172.0 MB in the beginning and 157.0 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-08-06 15:38:55,695 INFO L168 Benchmark]: TraceAbstraction took 976.95 ms. Allocated memory is still 194.0 MB. Free memory was 156.6 MB in the beginning and 150.5 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.6 MB. Max. memory is 8.0 GB. [2021-08-06 15:38:55,695 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 194.0 MB. Free memory is still 176.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 25.88 ms. Allocated memory is still 194.0 MB. Free memory was 174.8 MB in the beginning and 173.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 10.15 ms. Allocated memory is still 194.0 MB. Free memory was 173.0 MB in the beginning and 172.0 MB in the end (delta: 985.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 258.07 ms. Allocated memory is still 194.0 MB. Free memory was 172.0 MB in the beginning and 157.0 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 976.95 ms. Allocated memory is still 194.0 MB. Free memory was 156.6 MB in the beginning and 150.5 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.6 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 - 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 - PositiveResult [Line: 36]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 8 procedures, 45 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 44.7ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 6.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 26.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=131occurred 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 8 procedures, 45 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 861.5ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 10.4ms, AutomataDifference: 267.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 32.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 128 SDtfs, 109 SDslu, 154 SDs, 0 SdLazy, 140 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 108.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 81.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=539occurred in iteration=0, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 96.8ms AutomataMinimizationTime, 5 MinimizatonAttempts, 97 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.1ms SsaConstructionTime, 32.7ms SatisfiabilityAnalysisTime, 305.6ms InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 216 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-06 15:38:55,724 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...