/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-correct04.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 13:36:52,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 13:36:52,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 13:36:52,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-21 13:36:52,364 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 13:36:52,392 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 13:36:52,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 13:36:52,392 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-21 13:36:52,392 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-21 13:36:52,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 13:36:52,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 13:36:52,394 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 13:36:52,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 13:36:52,394 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 13:36:52,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 13:36:52,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 13:36:52,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 13:36:52,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 13:36:52,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 13:36:52,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 13:36:52,395 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 13:36:52,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 13:36:52,395 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 13:36:52,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 13:36:52,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 13:36:52,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 13:36:52,396 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 13:36:52,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 13:36:52,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 13:36:52,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 13:36:52,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 13:36:52,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 13:36:52,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 13:36:52,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 13:36:52,397 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 13:36:52,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 13:36:52,397 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 13:36:52,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 13:36:52,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 13:36:52,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 13:36:52,722 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-21 13:36:52,723 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-21 13:36:52,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct04.bpl [2021-08-21 13:36:52,724 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct04.bpl' [2021-08-21 13:36:52,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 13:36:52,757 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-21 13:36:52,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 13:36:52,759 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 13:36:52,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 13:36:52,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-correct04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:36:52" (1/1) ... [2021-08-21 13:36:52,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-correct04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:36:52" (1/1) ... [2021-08-21 13:36:52,793 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 13:36:52,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 13:36:52,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 13:36:52,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 13:36:52,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-correct04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:36:52" (1/1) ... [2021-08-21 13:36:52,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-correct04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:36:52" (1/1) ... [2021-08-21 13:36:52,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-correct04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:36:52" (1/1) ... [2021-08-21 13:36:52,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-correct04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:36:52" (1/1) ... [2021-08-21 13:36:52,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-correct04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:36:52" (1/1) ... [2021-08-21 13:36:52,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-correct04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:36:52" (1/1) ... [2021-08-21 13:36:52,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-correct04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:36:52" (1/1) ... [2021-08-21 13:36:52,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 13:36:52,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 13:36:52,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 13:36:52,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 13:36:52,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-correct04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:36:52" (1/1) ... [2021-08-21 13:36:52,822 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 13:36:52,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 13:36:52,846 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 13:36:52,866 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 13:36:52,886 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-08-21 13:36:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-08-21 13:36:52,886 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-08-21 13:36:52,887 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-08-21 13:36:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-08-21 13:36:52,887 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-08-21 13:36:52,887 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-08-21 13:36:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-08-21 13:36:52,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-08-21 13:36:52,888 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-21 13:36:52,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 13:36:52,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 13:36:52,890 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 13:36:53,212 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 13:36:53,212 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-08-21 13:36:53,213 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadWithAssertEXIT is neither atomic block end nor error location. [2021-08-21 13:36:53,213 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-08-21 13:36:53,215 INFO L202 PluginConnector]: Adding new model bluetooth-correct04.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:36:53 BoogieIcfgContainer [2021-08-21 13:36:53,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 13:36:53,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 13:36:53,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 13:36:53,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 13:36:53,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 01:36:52" (1/2) ... [2021-08-21 13:36:53,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8f2560 and model type bluetooth-correct04.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:36:53, skipping insertion in model container [2021-08-21 13:36:53,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct04.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:36:53" (2/2) ... [2021-08-21 13:36:53,222 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-correct04.bpl [2021-08-21 13:36:53,230 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 13:36:53,231 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 13:36:53,231 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 13:36:53,231 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 13:36:53,286 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-21 13:36:53,338 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 13:36:53,346 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 13:36:53,346 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-21 13:36:53,359 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 34 transitions, 93 flow [2021-08-21 13:36:53,515 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1697 states, 1695 states have (on average 5.07905604719764) internal successors, (8609), 1696 states have internal predecessors, (8609), 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 13:36:53,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 1697 states, 1695 states have (on average 5.07905604719764) internal successors, (8609), 1696 states have internal predecessors, (8609), 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 13:36:53,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-21 13:36:53,530 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:53,531 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:53,531 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 13:36:53,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:53,536 INFO L82 PathProgramCache]: Analyzing trace with hash 147932698, now seen corresponding path program 1 times [2021-08-21 13:36:53,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:53,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012040871] [2021-08-21 13:36:53,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:53,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:53,656 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 13:36:53,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:53,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012040871] [2021-08-21 13:36:53,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012040871] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:53,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:53,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-21 13:36:53,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598982197] [2021-08-21 13:36:53,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 13:36:53,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:53,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 13:36:53,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 13:36:53,688 INFO L87 Difference]: Start difference. First operand has 1697 states, 1695 states have (on average 5.07905604719764) internal successors, (8609), 1696 states have internal predecessors, (8609), 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 13:36:53,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:53,782 INFO L93 Difference]: Finished difference Result 1857 states and 9211 transitions. [2021-08-21 13:36:53,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 13:36:53,784 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 13:36:53,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:53,819 INFO L225 Difference]: With dead ends: 1857 [2021-08-21 13:36:53,820 INFO L226 Difference]: Without dead ends: 1351 [2021-08-21 13:36:53,821 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 13:36:53,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-08-21 13:36:53,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1351. [2021-08-21 13:36:53,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1351 states, 1350 states have (on average 5.002962962962963) internal successors, (6754), 1350 states have internal predecessors, (6754), 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 13:36:53,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1351 states to 1351 states and 6754 transitions. [2021-08-21 13:36:53,958 INFO L78 Accepts]: Start accepts. Automaton has 1351 states and 6754 transitions. Word has length 8 [2021-08-21 13:36:53,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:53,958 INFO L470 AbstractCegarLoop]: Abstraction has 1351 states and 6754 transitions. [2021-08-21 13:36:53,958 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 13:36:53,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1351 states and 6754 transitions. [2021-08-21 13:36:53,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-21 13:36:53,962 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:53,962 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:53,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 13:36:53,963 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 13:36:53,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:53,964 INFO L82 PathProgramCache]: Analyzing trace with hash 725950300, now seen corresponding path program 1 times [2021-08-21 13:36:53,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:53,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111000313] [2021-08-21 13:36:53,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:53,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:54,001 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 13:36:54,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:54,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111000313] [2021-08-21 13:36:54,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111000313] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:54,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:54,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-21 13:36:54,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453884576] [2021-08-21 13:36:54,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 13:36:54,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:54,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 13:36:54,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 13:36:54,005 INFO L87 Difference]: Start difference. First operand 1351 states and 6754 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 13:36:54,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:54,046 INFO L93 Difference]: Finished difference Result 1351 states and 5382 transitions. [2021-08-21 13:36:54,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 13:36:54,047 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 13:36:54,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:54,054 INFO L225 Difference]: With dead ends: 1351 [2021-08-21 13:36:54,054 INFO L226 Difference]: Without dead ends: 676 [2021-08-21 13:36:54,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 13:36:54,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-08-21 13:36:54,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 676. [2021-08-21 13:36:54,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 675 states have (on average 3.771851851851852) internal successors, (2546), 675 states have internal predecessors, (2546), 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 13:36:54,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 2546 transitions. [2021-08-21 13:36:54,087 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 2546 transitions. Word has length 12 [2021-08-21 13:36:54,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:54,087 INFO L470 AbstractCegarLoop]: Abstraction has 676 states and 2546 transitions. [2021-08-21 13:36:54,117 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 13:36:54,118 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 2546 transitions. [2021-08-21 13:36:54,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-21 13:36:54,119 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:54,120 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:54,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 13:36:54,122 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 13:36:54,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:54,123 INFO L82 PathProgramCache]: Analyzing trace with hash 352817560, now seen corresponding path program 2 times [2021-08-21 13:36:54,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:54,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507375315] [2021-08-21 13:36:54,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:54,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:54,201 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 13:36:54,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:54,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507375315] [2021-08-21 13:36:54,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507375315] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:54,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:54,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-21 13:36:54,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253302787] [2021-08-21 13:36:54,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 13:36:54,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:54,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 13:36:54,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-21 13:36:54,208 INFO L87 Difference]: Start difference. First operand 676 states and 2546 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 13:36:54,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:54,312 INFO L93 Difference]: Finished difference Result 1231 states and 4864 transitions. [2021-08-21 13:36:54,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-21 13:36:54,313 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 13:36:54,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:54,322 INFO L225 Difference]: With dead ends: 1231 [2021-08-21 13:36:54,322 INFO L226 Difference]: Without dead ends: 1179 [2021-08-21 13:36:54,322 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 20.5ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-21 13:36:54,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2021-08-21 13:36:54,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1089. [2021-08-21 13:36:54,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 1088 states have (on average 4.044117647058823) internal successors, (4400), 1088 states have internal predecessors, (4400), 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 13:36:54,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 4400 transitions. [2021-08-21 13:36:54,388 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 4400 transitions. Word has length 12 [2021-08-21 13:36:54,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:54,388 INFO L470 AbstractCegarLoop]: Abstraction has 1089 states and 4400 transitions. [2021-08-21 13:36:54,404 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 13:36:54,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 4400 transitions. [2021-08-21 13:36:54,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-21 13:36:54,408 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:54,408 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 13:36:54,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 13:36:54,408 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 13:36:54,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:54,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1752108984, now seen corresponding path program 1 times [2021-08-21 13:36:54,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:54,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482221618] [2021-08-21 13:36:54,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:54,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:54,529 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 13:36:54,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:54,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482221618] [2021-08-21 13:36:54,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482221618] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:54,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:54,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 13:36:54,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231647022] [2021-08-21 13:36:54,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 13:36:54,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:54,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 13:36:54,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-08-21 13:36:54,536 INFO L87 Difference]: Start difference. First operand 1089 states and 4400 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 13:36:54,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:54,658 INFO L93 Difference]: Finished difference Result 1736 states and 7105 transitions. [2021-08-21 13:36:54,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 13:36:54,659 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 13:36:54,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:54,671 INFO L225 Difference]: With dead ends: 1736 [2021-08-21 13:36:54,671 INFO L226 Difference]: Without dead ends: 1472 [2021-08-21 13:36:54,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 29.3ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-08-21 13:36:54,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-08-21 13:36:54,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1109. [2021-08-21 13:36:54,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 1108 states have (on average 4.074909747292419) internal successors, (4515), 1108 states have internal predecessors, (4515), 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 13:36:54,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 4515 transitions. [2021-08-21 13:36:54,724 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 4515 transitions. Word has length 15 [2021-08-21 13:36:54,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:54,725 INFO L470 AbstractCegarLoop]: Abstraction has 1109 states and 4515 transitions. [2021-08-21 13:36:54,726 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 13:36:54,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 4515 transitions. [2021-08-21 13:36:54,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-21 13:36:54,731 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:54,731 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 13:36:54,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 13:36:54,732 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 13:36:54,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:54,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1691419464, now seen corresponding path program 1 times [2021-08-21 13:36:54,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:54,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654106537] [2021-08-21 13:36:54,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:54,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:54,912 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 13:36:54,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:54,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654106537] [2021-08-21 13:36:54,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654106537] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:54,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:54,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 13:36:54,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561683335] [2021-08-21 13:36:54,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 13:36:54,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:54,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 13:36:54,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-08-21 13:36:54,917 INFO L87 Difference]: Start difference. First operand 1109 states and 4515 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 13:36:55,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:55,029 INFO L93 Difference]: Finished difference Result 1564 states and 6430 transitions. [2021-08-21 13:36:55,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 13:36:55,030 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 13:36:55,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:55,038 INFO L225 Difference]: With dead ends: 1564 [2021-08-21 13:36:55,039 INFO L226 Difference]: Without dead ends: 1048 [2021-08-21 13:36:55,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 39.1ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-08-21 13:36:55,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-08-21 13:36:55,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 829. [2021-08-21 13:36:55,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 828 states have (on average 4.020531400966184) internal successors, (3329), 828 states have internal predecessors, (3329), 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 13:36:55,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 3329 transitions. [2021-08-21 13:36:55,075 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 3329 transitions. Word has length 18 [2021-08-21 13:36:55,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:55,076 INFO L470 AbstractCegarLoop]: Abstraction has 829 states and 3329 transitions. [2021-08-21 13:36:55,076 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 13:36:55,076 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 3329 transitions. [2021-08-21 13:36:55,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-21 13:36:55,078 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 13:36:55,078 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 13:36:55,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 13:36:55,079 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 13:36:55,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 13:36:55,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1425669984, now seen corresponding path program 1 times [2021-08-21 13:36:55,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 13:36:55,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042482419] [2021-08-21 13:36:55,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 13:36:55,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 13:36:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 13:36:55,230 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 13:36:55,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 13:36:55,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042482419] [2021-08-21 13:36:55,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042482419] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 13:36:55,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 13:36:55,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 13:36:55,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463498317] [2021-08-21 13:36:55,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-21 13:36:55,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 13:36:55,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-21 13:36:55,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=37, Unknown=0, NotChecked=0, Total=72 [2021-08-21 13:36:55,233 INFO L87 Difference]: Start difference. First operand 829 states and 3329 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 13:36:55,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 13:36:55,326 INFO L93 Difference]: Finished difference Result 559 states and 2330 transitions. [2021-08-21 13:36:55,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 13:36:55,326 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 13:36:55,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 13:36:55,327 INFO L225 Difference]: With dead ends: 559 [2021-08-21 13:36:55,327 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 13:36:55,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 43.1ms TimeCoverageRelationStatistics Valid=35, Invalid=37, Unknown=0, NotChecked=0, Total=72 [2021-08-21 13:36:55,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 13:36:55,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 13:36:55,329 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 13:36:55,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 13:36:55,336 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-08-21 13:36:55,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 13:36:55,336 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 13:36:55,336 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 13:36:55,336 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 13:36:55,336 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 13:36:55,339 INFO L764 garLoopResultBuilder]: Registering result SAFE for location DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT [2021-08-21 13:36:55,339 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 13:36:55,339 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 13:36:55,339 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 13:36:55,340 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-08-21 13:36:55,343 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATION [2021-08-21 13:36:55,343 INFO L764 garLoopResultBuilder]: Registering result SAFE for location DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT [2021-08-21 13:36:55,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 13:36:55,351 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 13:36:55,352 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 13:36:55,364 INFO L202 PluginConnector]: Adding new model bluetooth-correct04.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:36:55 BasicIcfg [2021-08-21 13:36:55,364 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 13:36:55,365 INFO L168 Benchmark]: Toolchain (without parser) took 2607.27 ms. Allocated memory was 183.5 MB in the beginning and 269.5 MB in the end (delta: 86.0 MB). Free memory was 164.2 MB in the beginning and 152.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 98.6 MB. Max. memory is 8.0 GB. [2021-08-21 13:36:55,366 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 183.5 MB. Free memory is still 165.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 13:36:55,366 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.09 ms. Allocated memory is still 183.5 MB. Free memory was 164.2 MB in the beginning and 162.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 13:36:55,366 INFO L168 Benchmark]: Boogie Preprocessor took 17.96 ms. Allocated memory is still 183.5 MB. Free memory was 162.3 MB in the beginning and 161.4 MB in the end (delta: 911.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 13:36:55,366 INFO L168 Benchmark]: RCFGBuilder took 401.97 ms. Allocated memory is still 183.5 MB. Free memory was 161.4 MB in the beginning and 146.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-08-21 13:36:55,367 INFO L168 Benchmark]: TraceAbstraction took 2147.51 ms. Allocated memory was 183.5 MB in the beginning and 269.5 MB in the end (delta: 86.0 MB). Free memory was 145.6 MB in the beginning and 152.1 MB in the end (delta: -6.5 MB). Peak memory consumption was 79.8 MB. Max. memory is 8.0 GB. [2021-08-21 13:36:55,368 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 0.16 ms. Allocated memory is still 183.5 MB. Free memory is still 165.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 35.09 ms. Allocated memory is still 183.5 MB. Free memory was 164.2 MB in the beginning and 162.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 17.96 ms. Allocated memory is still 183.5 MB. Free memory was 162.3 MB in the beginning and 161.4 MB in the end (delta: 911.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 401.97 ms. Allocated memory is still 183.5 MB. Free memory was 161.4 MB in the beginning and 146.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2147.51 ms. Allocated memory was 183.5 MB in the beginning and 269.5 MB in the end (delta: 86.0 MB). Free memory was 145.6 MB in the beginning and 152.1 MB in the end (delta: -6.5 MB). Peak memory consumption was 79.8 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 - PositiveResult [Line: 37]: 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 9 procedures, 50 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 2010.3ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 30.6ms, AutomataDifference: 681.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 168.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 196 SDtfs, 225 SDslu, 269 SDs, 0 SdLazy, 282 SolverSat, 121 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 279.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 138.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1697occurred in iteration=0, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 316.9ms AutomataMinimizationTime, 6 MinimizatonAttempts, 672 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.4ms SsaConstructionTime, 67.4ms SatisfiabilityAnalysisTime, 499.5ms InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 316 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 13:36:55,408 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...