/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-correct07.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 13:36:59,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 13:36:59,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 13:36:59,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-21 13:36:59,097 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 13:36:59,123 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 13:36:59,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 13:36:59,123 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-21 13:36:59,124 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-21 13:36:59,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 13:36:59,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 13:36:59,126 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 13:36:59,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 13:36:59,126 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 13:36:59,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 13:36:59,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 13:36:59,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 13:36:59,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 13:36:59,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 13:36:59,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 13:36:59,127 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 13:36:59,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 13:36:59,127 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 13:36:59,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 13:36:59,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 13:36:59,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 13:36:59,128 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 13:36:59,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 13:36:59,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 13:36:59,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 13:36:59,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 13:36:59,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 13:36:59,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 13:36:59,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 13:36:59,129 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 13:36:59,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 13:36:59,129 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 13:36:59,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 13:36:59,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 13:36:59,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 13:36:59,404 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-21 13:36:59,405 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-21 13:36:59,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct07.bpl [2021-08-21 13:36:59,491 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct07.bpl' [2021-08-21 13:36:59,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 13:36:59,511 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-21 13:36:59,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 13:36:59,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 13:36:59,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 13:36:59,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:36:59" (1/1) ... [2021-08-21 13:36:59,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:36:59" (1/1) ... [2021-08-21 13:36:59,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 13:36:59,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 13:36:59,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 13:36:59,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 13:36:59,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:36:59" (1/1) ... [2021-08-21 13:36:59,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:36:59" (1/1) ... [2021-08-21 13:36:59,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:36:59" (1/1) ... [2021-08-21 13:36:59,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:36:59" (1/1) ... [2021-08-21 13:36:59,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:36:59" (1/1) ... [2021-08-21 13:36:59,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:36:59" (1/1) ... [2021-08-21 13:36:59,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:36:59" (1/1) ... [2021-08-21 13:36:59,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 13:36:59,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 13:36:59,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 13:36:59,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 13:36:59,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:36:59" (1/1) ... [2021-08-21 13:36:59,570 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 13:36:59,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 13:36:59,589 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 13:36:59,607 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 13:36:59,619 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-08-21 13:36:59,619 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-08-21 13:36:59,619 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-08-21 13:36:59,619 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-08-21 13:36:59,620 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-08-21 13:36:59,620 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-08-21 13:36:59,620 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-08-21 13:36:59,620 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-08-21 13:36:59,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-08-21 13:36:59,620 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-21 13:36:59,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 13:36:59,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 13:36:59,622 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 13:36:59,827 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 13:36:59,827 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-08-21 13:36:59,828 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadWithAssertEXIT is neither atomic block end nor error location. [2021-08-21 13:36:59,828 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-08-21 13:36:59,830 INFO L202 PluginConnector]: Adding new model bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:36:59 BoogieIcfgContainer [2021-08-21 13:36:59,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 13:36:59,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 13:36:59,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 13:36:59,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 13:36:59,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:36:59" (1/2) ... [2021-08-21 13:36:59,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2e7cee and model type bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:36:59, skipping insertion in model container [2021-08-21 13:36:59,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:36:59" (2/2) ... [2021-08-21 13:36:59,834 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-correct07.bpl [2021-08-21 13:36:59,837 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 13:36:59,837 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 13:36:59,837 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 13:36:59,838 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 13:36:59,864 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-21 13:36:59,891 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 13:36:59,895 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 13:36:59,896 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-08-21 13:36:59,902 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67 places, 49 transitions, 138 flow [2021-08-21 13:37:02,340 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 45923 states, 45921 states have (on average 8.064458526600031) internal successors, (370328), 45922 states have internal predecessors, (370328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:02,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 45923 states, 45921 states have (on average 8.064458526600031) internal successors, (370328), 45922 states have internal predecessors, (370328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:02,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-21 13:37:02,622 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:02,623 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:02,623 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 6 more)] === [2021-08-21 13:37:02,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:02,627 INFO L82 PathProgramCache]: Analyzing trace with hash 425563323, now seen corresponding path program 1 times [2021-08-21 13:37:02,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:02,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713883621] [2021-08-21 13:37:02,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:02,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:02,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:02,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:02,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713883621] [2021-08-21 13:37:02,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713883621] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:02,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:02,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-21 13:37:02,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824949760] [2021-08-21 13:37:02,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 13:37:02,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:02,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 13:37:02,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 13:37:02,893 INFO L87 Difference]: Start difference. First operand has 45923 states, 45921 states have (on average 8.064458526600031) internal successors, (370328), 45922 states have internal predecessors, (370328), 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) [2021-08-21 13:37:04,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:04,479 INFO L93 Difference]: Finished difference Result 50295 states and 399730 transitions. [2021-08-21 13:37:04,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 13:37:04,481 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 [2021-08-21 13:37:04,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:05,000 INFO L225 Difference]: With dead ends: 50295 [2021-08-21 13:37:05,001 INFO L226 Difference]: Without dead ends: 36451 [2021-08-21 13:37:05,004 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 13:37:05,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36451 states. [2021-08-21 13:37:07,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36451 to 36451. [2021-08-21 13:37:07,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36451 states, 36450 states have (on average 8.000109739368998) internal successors, (291604), 36450 states have internal predecessors, (291604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:07,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36451 states to 36451 states and 291604 transitions. [2021-08-21 13:37:07,828 INFO L78 Accepts]: Start accepts. Automaton has 36451 states and 291604 transitions. Word has length 8 [2021-08-21 13:37:07,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:07,829 INFO L470 AbstractCegarLoop]: Abstraction has 36451 states and 291604 transitions. [2021-08-21 13:37:07,829 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) [2021-08-21 13:37:07,829 INFO L276 IsEmpty]: Start isEmpty. Operand 36451 states and 291604 transitions. [2021-08-21 13:37:07,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-21 13:37:07,833 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:07,833 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:07,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 13:37:07,833 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 6 more)] === [2021-08-21 13:37:07,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:07,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1411352313, now seen corresponding path program 1 times [2021-08-21 13:37:07,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:07,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513354354] [2021-08-21 13:37:07,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:07,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:07,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:07,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:07,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513354354] [2021-08-21 13:37:07,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513354354] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:07,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:07,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-21 13:37:07,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395577229] [2021-08-21 13:37:07,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 13:37:07,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:07,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 13:37:07,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-21 13:37:07,929 INFO L87 Difference]: Start difference. First operand 36451 states and 291604 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) [2021-08-21 13:37:09,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:09,696 INFO L93 Difference]: Finished difference Result 67550 states and 540565 transitions. [2021-08-21 13:37:09,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-21 13:37:09,696 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 [2021-08-21 13:37:09,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:10,453 INFO L225 Difference]: With dead ends: 67550 [2021-08-21 13:37:10,453 INFO L226 Difference]: Without dead ends: 67550 [2021-08-21 13:37:10,454 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 17.4ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-21 13:37:10,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67550 states. [2021-08-21 13:37:13,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67550 to 67046. [2021-08-21 13:37:14,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67046 states, 67045 states have (on average 8.021731672757104) internal successors, (537817), 67045 states have internal predecessors, (537817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:15,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67046 states to 67046 states and 537817 transitions. [2021-08-21 13:37:15,304 INFO L78 Accepts]: Start accepts. Automaton has 67046 states and 537817 transitions. Word has length 12 [2021-08-21 13:37:15,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:15,304 INFO L470 AbstractCegarLoop]: Abstraction has 67046 states and 537817 transitions. [2021-08-21 13:37:15,305 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) [2021-08-21 13:37:15,305 INFO L276 IsEmpty]: Start isEmpty. Operand 67046 states and 537817 transitions. [2021-08-21 13:37:15,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-21 13:37:15,320 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:15,321 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:15,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 13:37:15,321 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 6 more)] === [2021-08-21 13:37:15,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:15,322 INFO L82 PathProgramCache]: Analyzing trace with hash 2041431963, now seen corresponding path program 2 times [2021-08-21 13:37:15,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:15,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253302787] [2021-08-21 13:37:15,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:15,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:15,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:15,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:15,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253302787] [2021-08-21 13:37:15,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253302787] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:15,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:15,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-21 13:37:15,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150490391] [2021-08-21 13:37:15,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 13:37:15,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:15,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 13:37:15,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 13:37:15,354 INFO L87 Difference]: Start difference. First operand 67046 states and 537817 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) [2021-08-21 13:37:16,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:16,289 INFO L93 Difference]: Finished difference Result 62656 states and 402418 transitions. [2021-08-21 13:37:16,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 13:37:16,289 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 [2021-08-21 13:37:16,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:16,568 INFO L225 Difference]: With dead ends: 62656 [2021-08-21 13:37:16,570 INFO L226 Difference]: Without dead ends: 33633 [2021-08-21 13:37:16,576 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 13:37:16,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33633 states. [2021-08-21 13:37:18,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33633 to 31945. [2021-08-21 13:37:18,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31945 states, 31944 states have (on average 6.497088655146507) internal successors, (207543), 31944 states have internal predecessors, (207543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:18,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31945 states to 31945 states and 207543 transitions. [2021-08-21 13:37:18,265 INFO L78 Accepts]: Start accepts. Automaton has 31945 states and 207543 transitions. Word has length 12 [2021-08-21 13:37:18,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:18,265 INFO L470 AbstractCegarLoop]: Abstraction has 31945 states and 207543 transitions. [2021-08-21 13:37:18,266 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) [2021-08-21 13:37:18,266 INFO L276 IsEmpty]: Start isEmpty. Operand 31945 states and 207543 transitions. [2021-08-21 13:37:18,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-21 13:37:18,276 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:18,276 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:18,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 13:37:18,276 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 6 more)] === [2021-08-21 13:37:18,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:18,277 INFO L82 PathProgramCache]: Analyzing trace with hash -733017338, now seen corresponding path program 1 times [2021-08-21 13:37:18,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:18,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908879302] [2021-08-21 13:37:18,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:18,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:18,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:18,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:18,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908879302] [2021-08-21 13:37:18,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908879302] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:18,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:18,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 13:37:18,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841850771] [2021-08-21 13:37:18,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 13:37:18,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:18,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 13:37:18,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-08-21 13:37:18,341 INFO L87 Difference]: Start difference. First operand 31945 states and 207543 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) [2021-08-21 13:37:19,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:19,542 INFO L93 Difference]: Finished difference Result 55538 states and 366050 transitions. [2021-08-21 13:37:19,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 13:37:19,543 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 [2021-08-21 13:37:19,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:19,982 INFO L225 Difference]: With dead ends: 55538 [2021-08-21 13:37:19,983 INFO L226 Difference]: Without dead ends: 52912 [2021-08-21 13:37:19,983 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 18.8ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-08-21 13:37:20,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52912 states. [2021-08-21 13:37:21,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52912 to 38337. [2021-08-21 13:37:21,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38337 states, 38336 states have (on average 6.553657136894825) internal successors, (251241), 38336 states have internal predecessors, (251241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:22,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38337 states to 38337 states and 251241 transitions. [2021-08-21 13:37:22,407 INFO L78 Accepts]: Start accepts. Automaton has 38337 states and 251241 transitions. Word has length 15 [2021-08-21 13:37:22,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:22,408 INFO L470 AbstractCegarLoop]: Abstraction has 38337 states and 251241 transitions. [2021-08-21 13:37:22,408 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) [2021-08-21 13:37:22,408 INFO L276 IsEmpty]: Start isEmpty. Operand 38337 states and 251241 transitions. [2021-08-21 13:37:22,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-21 13:37:22,485 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:22,485 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:22,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 13:37:22,485 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 6 more)] === [2021-08-21 13:37:22,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:22,486 INFO L82 PathProgramCache]: Analyzing trace with hash 18630227, now seen corresponding path program 1 times [2021-08-21 13:37:22,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:22,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408567876] [2021-08-21 13:37:22,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:22,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:22,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:22,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:22,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408567876] [2021-08-21 13:37:22,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408567876] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:22,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:22,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 13:37:22,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128206361] [2021-08-21 13:37:22,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 13:37:22,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:22,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 13:37:22,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-08-21 13:37:22,791 INFO L87 Difference]: Start difference. First operand 38337 states and 251241 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) [2021-08-21 13:37:24,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:24,315 INFO L93 Difference]: Finished difference Result 65964 states and 436782 transitions. [2021-08-21 13:37:24,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 13:37:24,316 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 [2021-08-21 13:37:24,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:24,802 INFO L225 Difference]: With dead ends: 65964 [2021-08-21 13:37:24,802 INFO L226 Difference]: Without dead ends: 59950 [2021-08-21 13:37:24,802 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 38.8ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-08-21 13:37:24,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59950 states. [2021-08-21 13:37:26,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59950 to 41041. [2021-08-21 13:37:26,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41041 states, 41040 states have (on average 6.58874269005848) internal successors, (270402), 41040 states have internal predecessors, (270402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:27,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41041 states to 41041 states and 270402 transitions. [2021-08-21 13:37:27,172 INFO L78 Accepts]: Start accepts. Automaton has 41041 states and 270402 transitions. Word has length 18 [2021-08-21 13:37:27,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:27,172 INFO L470 AbstractCegarLoop]: Abstraction has 41041 states and 270402 transitions. [2021-08-21 13:37:27,172 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) [2021-08-21 13:37:27,172 INFO L276 IsEmpty]: Start isEmpty. Operand 41041 states and 270402 transitions. [2021-08-21 13:37:27,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-21 13:37:27,220 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:27,220 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:27,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 13:37:27,221 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 6 more)] === [2021-08-21 13:37:27,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:27,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1732428758, now seen corresponding path program 1 times [2021-08-21 13:37:27,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:27,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386451845] [2021-08-21 13:37:27,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:27,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:27,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:27,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:27,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386451845] [2021-08-21 13:37:27,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386451845] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:27,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:27,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 13:37:27,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011219640] [2021-08-21 13:37:27,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-21 13:37:27,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:27,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-21 13:37:27,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=37, Unknown=0, NotChecked=0, Total=72 [2021-08-21 13:37:27,311 INFO L87 Difference]: Start difference. First operand 41041 states and 270402 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:28,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:28,663 INFO L93 Difference]: Finished difference Result 68144 states and 452773 transitions. [2021-08-21 13:37:28,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 13:37:28,664 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 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 21 [2021-08-21 13:37:28,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:29,149 INFO L225 Difference]: With dead ends: 68144 [2021-08-21 13:37:29,150 INFO L226 Difference]: Without dead ends: 57829 [2021-08-21 13:37:29,150 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 28.5ms TimeCoverageRelationStatistics Valid=35, Invalid=37, Unknown=0, NotChecked=0, Total=72 [2021-08-21 13:37:29,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57829 states. [2021-08-21 13:37:30,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57829 to 39147. [2021-08-21 13:37:30,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39147 states, 39146 states have (on average 6.575077913452205) internal successors, (257388), 39146 states have internal predecessors, (257388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:31,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39147 states to 39147 states and 257388 transitions. [2021-08-21 13:37:31,289 INFO L78 Accepts]: Start accepts. Automaton has 39147 states and 257388 transitions. Word has length 21 [2021-08-21 13:37:31,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:31,289 INFO L470 AbstractCegarLoop]: Abstraction has 39147 states and 257388 transitions. [2021-08-21 13:37:31,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:31,302 INFO L276 IsEmpty]: Start isEmpty. Operand 39147 states and 257388 transitions. [2021-08-21 13:37:31,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-21 13:37:31,389 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:31,389 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:31,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 13:37:31,389 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 6 more)] === [2021-08-21 13:37:31,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:31,389 INFO L82 PathProgramCache]: Analyzing trace with hash 572242783, now seen corresponding path program 1 times [2021-08-21 13:37:31,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:31,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412786604] [2021-08-21 13:37:31,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:31,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:31,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:31,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:31,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412786604] [2021-08-21 13:37:31,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412786604] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:31,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:31,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-21 13:37:31,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191857288] [2021-08-21 13:37:31,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-21 13:37:31,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:31,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-21 13:37:31,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=46, Unknown=0, NotChecked=0, Total=90 [2021-08-21 13:37:31,509 INFO L87 Difference]: Start difference. First operand 39147 states and 257388 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:32,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:32,716 INFO L93 Difference]: Finished difference Result 61196 states and 406285 transitions. [2021-08-21 13:37:32,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 13:37:32,717 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-08-21 13:37:32,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:33,019 INFO L225 Difference]: With dead ends: 61196 [2021-08-21 13:37:33,020 INFO L226 Difference]: Without dead ends: 46310 [2021-08-21 13:37:33,020 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 40.2ms TimeCoverageRelationStatistics Valid=44, Invalid=46, Unknown=0, NotChecked=0, Total=90 [2021-08-21 13:37:33,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46310 states. [2021-08-21 13:37:34,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46310 to 32559. [2021-08-21 13:37:34,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32559 states, 32558 states have (on average 6.510688617236931) internal successors, (211975), 32558 states have internal predecessors, (211975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:34,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32559 states to 32559 states and 211975 transitions. [2021-08-21 13:37:34,913 INFO L78 Accepts]: Start accepts. Automaton has 32559 states and 211975 transitions. Word has length 24 [2021-08-21 13:37:34,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:34,913 INFO L470 AbstractCegarLoop]: Abstraction has 32559 states and 211975 transitions. [2021-08-21 13:37:34,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:34,913 INFO L276 IsEmpty]: Start isEmpty. Operand 32559 states and 211975 transitions. [2021-08-21 13:37:34,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-21 13:37:34,973 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:34,973 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:34,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 13:37:34,973 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 6 more)] === [2021-08-21 13:37:34,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:34,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1016672010, now seen corresponding path program 1 times [2021-08-21 13:37:34,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:34,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39044373] [2021-08-21 13:37:34,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:34,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:35,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:35,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:35,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39044373] [2021-08-21 13:37:35,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39044373] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:35,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:35,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-21 13:37:35,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457006536] [2021-08-21 13:37:35,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-21 13:37:35,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:35,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-21 13:37:35,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2021-08-21 13:37:35,106 INFO L87 Difference]: Start difference. First operand 32559 states and 211975 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:36,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:36,097 INFO L93 Difference]: Finished difference Result 45660 states and 301470 transitions. [2021-08-21 13:37:36,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 13:37:36,098 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-08-21 13:37:36,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:36,271 INFO L225 Difference]: With dead ends: 45660 [2021-08-21 13:37:36,271 INFO L226 Difference]: Without dead ends: 28584 [2021-08-21 13:37:36,272 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 47.2ms TimeCoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2021-08-21 13:37:36,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28584 states. [2021-08-21 13:37:37,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28584 to 22057. [2021-08-21 13:37:37,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22057 states, 22056 states have (on average 6.404379760609358) internal successors, (141255), 22056 states have internal predecessors, (141255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:37,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22057 states to 22057 states and 141255 transitions. [2021-08-21 13:37:37,208 INFO L78 Accepts]: Start accepts. Automaton has 22057 states and 141255 transitions. Word has length 27 [2021-08-21 13:37:37,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:37,210 INFO L470 AbstractCegarLoop]: Abstraction has 22057 states and 141255 transitions. [2021-08-21 13:37:37,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:37,210 INFO L276 IsEmpty]: Start isEmpty. Operand 22057 states and 141255 transitions. [2021-08-21 13:37:37,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-21 13:37:37,238 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:37:37,238 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:37:37,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-21 13:37:37,238 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 6 more)] === [2021-08-21 13:37:37,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:37:37,239 INFO L82 PathProgramCache]: Analyzing trace with hash -2133645509, now seen corresponding path program 1 times [2021-08-21 13:37:37,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:37:37,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767610790] [2021-08-21 13:37:37,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:37:37,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:37:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:37:37,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 13:37:37,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:37:37,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767610790] [2021-08-21 13:37:37,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767610790] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:37:37,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:37:37,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-21 13:37:37,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168001373] [2021-08-21 13:37:37,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-21 13:37:37,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:37:37,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-21 13:37:37,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=67, Unknown=0, NotChecked=0, Total=132 [2021-08-21 13:37:37,897 INFO L87 Difference]: Start difference. First operand 22057 states and 141255 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:38,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:37:38,251 INFO L93 Difference]: Finished difference Result 14767 states and 99702 transitions. [2021-08-21 13:37:38,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-21 13:37:38,251 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 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 30 [2021-08-21 13:37:38,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:37:38,252 INFO L225 Difference]: With dead ends: 14767 [2021-08-21 13:37:38,252 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 13:37:38,252 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 59.9ms TimeCoverageRelationStatistics Valid=65, Invalid=67, Unknown=0, NotChecked=0, Total=132 [2021-08-21 13:37:38,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 13:37:38,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 13:37:38,252 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) [2021-08-21 13:37:38,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 13:37:38,253 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2021-08-21 13:37:38,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:37:38,253 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 13:37:38,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 13:37:38,253 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 13:37:38,253 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 13:37:38,255 INFO L764 garLoopResultBuilder]: Registering result SAFE for location DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT [2021-08-21 13:37:38,256 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 13:37:38,256 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 13:37:38,256 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 13:37:38,256 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-08-21 13:37:38,257 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATION [2021-08-21 13:37:38,257 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5INUSE_VIOLATION [2021-08-21 13:37:38,257 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6INUSE_VIOLATION [2021-08-21 13:37:38,257 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7INUSE_VIOLATION [2021-08-21 13:37:38,257 INFO L764 garLoopResultBuilder]: Registering result SAFE for location DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT [2021-08-21 13:37:38,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-21 13:37:38,261 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 13:37:38,261 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 13:37:38,262 INFO L202 PluginConnector]: Adding new model bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:37:38 BasicIcfg [2021-08-21 13:37:38,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 13:37:38,263 INFO L168 Benchmark]: Toolchain (without parser) took 38751.95 ms. Allocated memory was 206.6 MB in the beginning and 7.8 GB in the end (delta: 7.6 GB). Free memory was 186.7 MB in the beginning and 5.2 GB in the end (delta: -5.1 GB). Peak memory consumption was 2.6 GB. Max. memory is 8.0 GB. [2021-08-21 13:37:38,264 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 206.6 MB. Free memory is still 187.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 13:37:38,264 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.27 ms. Allocated memory is still 206.6 MB. Free memory was 186.6 MB in the beginning and 184.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 13:37:38,264 INFO L168 Benchmark]: Boogie Preprocessor took 13.12 ms. Allocated memory is still 206.6 MB. Free memory was 184.8 MB in the beginning and 183.9 MB in the end (delta: 897.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 13:37:38,264 INFO L168 Benchmark]: RCFGBuilder took 267.30 ms. Allocated memory is still 206.6 MB. Free memory was 183.8 MB in the beginning and 168.4 MB in the end (delta: 15.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-08-21 13:37:38,265 INFO L168 Benchmark]: TraceAbstraction took 38431.66 ms. Allocated memory was 206.6 MB in the beginning and 7.8 GB in the end (delta: 7.6 GB). Free memory was 167.9 MB in the beginning and 5.2 GB in the end (delta: -5.1 GB). Peak memory consumption was 2.6 GB. Max. memory is 8.0 GB. [2021-08-21 13:37:38,266 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 0.13 ms. Allocated memory is still 206.6 MB. Free memory is still 187.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 36.27 ms. Allocated memory is still 206.6 MB. Free memory was 186.6 MB in the beginning and 184.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.12 ms. Allocated memory is still 206.6 MB. Free memory was 184.8 MB in the beginning and 183.9 MB in the end (delta: 897.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 267.30 ms. Allocated memory is still 206.6 MB. Free memory was 183.8 MB in the beginning and 168.4 MB in the end (delta: 15.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 38431.66 ms. Allocated memory was 206.6 MB in the beginning and 7.8 GB in the end (delta: 7.6 GB). Free memory was 167.9 MB in the beginning and 5.2 GB in the end (delta: -5.1 GB). Peak memory consumption was 2.6 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 - PositiveResult [Line: 40]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 12 procedures, 65 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 38369.7ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 608.4ms, AutomataDifference: 14523.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2445.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 562 SDtfs, 758 SDslu, 914 SDs, 0 SdLazy, 1196 SolverSat, 555 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 840.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 282.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=67046occurred in iteration=2, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19115.8ms AutomataMinimizationTime, 9 MinimizatonAttempts, 74636 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.7ms SsaConstructionTime, 87.7ms SatisfiabilityAnalysisTime, 1413.2ms InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 724 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2021-08-21 13:37:38,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...