/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-POR-NewStatesSleep-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth03-incorrect.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 20:07:03,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 20:07:03,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 20:07:04,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-24 20:07:04,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 20:07:04,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 20:07:04,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 20:07:04,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 20:07:04,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 20:07:04,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 20:07:04,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 20:07:04,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 20:07:04,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 20:07:04,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 20:07:04,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 20:07:04,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 20:07:04,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-24 20:07:04,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-24 20:07:04,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-24 20:07:04,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-24 20:07:04,106 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-POR-NewStatesSleep-NoLbe-Lockstep.epf [2021-06-24 20:07:04,143 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 20:07:04,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 20:07:04,143 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 20:07:04,144 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 20:07:04,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 20:07:04,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 20:07:04,146 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 20:07:04,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 20:07:04,147 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 20:07:04,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 20:07:04,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 20:07:04,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 20:07:04,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 20:07:04,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 20:07:04,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 20:07:04,149 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 20:07:04,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 20:07:04,149 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 20:07:04,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 20:07:04,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 20:07:04,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 20:07:04,150 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 20:07:04,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 20:07:04,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 20:07:04,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 20:07:04,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 20:07:04,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 20:07:04,151 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 20:07:04,151 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-24 20:07:04,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 20:07:04,151 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 20:07:04,151 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-24 20:07:04,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 20:07:04,152 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-24 20:07:04,152 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 20:07:04,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 20:07:04,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 20:07:04,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 20:07:04,507 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 20:07:04,508 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 20:07:04,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth03-incorrect.bpl [2021-06-24 20:07:04,509 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth03-incorrect.bpl' [2021-06-24 20:07:04,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 20:07:04,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 20:07:04,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 20:07:04,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 20:07:04,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 20:07:04,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:07:04" (1/1) ... [2021-06-24 20:07:04,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:07:04" (1/1) ... [2021-06-24 20:07:04,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 20:07:04,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 20:07:04,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 20:07:04,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 20:07:04,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:07:04" (1/1) ... [2021-06-24 20:07:04,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:07:04" (1/1) ... [2021-06-24 20:07:04,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:07:04" (1/1) ... [2021-06-24 20:07:04,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:07:04" (1/1) ... [2021-06-24 20:07:04,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:07:04" (1/1) ... [2021-06-24 20:07:04,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:07:04" (1/1) ... [2021-06-24 20:07:04,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:07:04" (1/1) ... [2021-06-24 20:07:04,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 20:07:04,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 20:07:04,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 20:07:04,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 20:07:04,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:07:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 20:07:04,676 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 20:07:04,677 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 20:07:04,677 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 20:07:04,677 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 20:07:04,677 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 20:07:04,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 20:07:04,678 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 20:07:04,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 20:07:04,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 20:07:04,679 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-24 20:07:04,891 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 20:07:04,892 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 20:07:04,894 INFO L202 PluginConnector]: Adding new model bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:07:04 BoogieIcfgContainer [2021-06-24 20:07:04,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 20:07:04,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 20:07:04,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 20:07:04,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 20:07:04,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:07:04" (1/2) ... [2021-06-24 20:07:04,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4f1dd5 and model type bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:07:04, skipping insertion in model container [2021-06-24 20:07:04,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:07:04" (2/2) ... [2021-06-24 20:07:04,901 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth03-incorrect.bpl [2021-06-24 20:07:04,925 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 20:07:04,925 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 20:07:04,925 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 20:07:04,926 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 20:07:04,978 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 20:07:05,000 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-24 20:07:05,093 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 20:07:05,093 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 20:07:05,093 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 20:07:05,094 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 20:07:05,094 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 20:07:05,094 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 20:07:05,094 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 20:07:05,094 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-24 20:07:05,493 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/4) [2021-06-24 20:07:05,495 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-24 20:07:05,513 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 20:07:05,514 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 20:07:05,514 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 20:07:05,514 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 20:07:05,514 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 20:07:05,514 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 20:07:05,514 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 20:07:05,514 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork2======== [2021-06-24 20:07:05,549 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:07:05,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:07:05,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1947564844, now seen corresponding path program 1 times [2021-06-24 20:07:05,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:07:05,562 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818507082] [2021-06-24 20:07:05,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:07:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:07:05,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:07:05,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:07:05,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818507082] [2021-06-24 20:07:05,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818507082] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:07:05,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:07:05,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 20:07:05,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533614717] [2021-06-24 20:07:05,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:07:05,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:07:05,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:07:05,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:07:05,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:07:05,703 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:07:05,704 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-06-24 20:07:05,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:07:05,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:07:05,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 20:07:05,797 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:07:05,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:07:05,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1200802613, now seen corresponding path program 1 times [2021-06-24 20:07:05,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:07:05,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719037236] [2021-06-24 20:07:05,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:07:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:07:05,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:07:05,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:07:05,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719037236] [2021-06-24 20:07:05,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719037236] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:07:05,839 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:07:05,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 20:07:05,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032666920] [2021-06-24 20:07:05,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:07:05,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:07:05,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:07:05,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:07:05,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:07:05,846 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:07:05,846 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2021-06-24 20:07:05,846 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:07:05,846 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:07:05,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:07:05,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:07:05,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 20:07:05,914 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:07:05,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:07:05,914 INFO L82 PathProgramCache]: Analyzing trace with hash 378602037, now seen corresponding path program 1 times [2021-06-24 20:07:05,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:07:05,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164195705] [2021-06-24 20:07:05,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:07:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:07:06,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:07:06,043 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:07:06,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164195705] [2021-06-24 20:07:06,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164195705] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:07:06,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:07:06,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-24 20:07:06,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864943731] [2021-06-24 20:07:06,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-24 20:07:06,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:07:06,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-24 20:07:06,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 20:07:06,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:07:06,047 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:07:06,047 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-06-24 20:07:06,047 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:07:06,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:07:06,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:07:06,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:07:06,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:07:06,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:07:06,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 20:07:06,201 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:07:06,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:07:06,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1557455209, now seen corresponding path program 2 times [2021-06-24 20:07:06,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:07:06,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009439879] [2021-06-24 20:07:06,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:07:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 20:07:06,212 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 20:07:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 20:07:06,236 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 20:07:06,264 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-24 20:07:06,264 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-06-24 20:07:06,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-24 20:07:06,272 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork2 was UNSAFE (2/4) [2021-06-24 20:07:06,274 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 20:07:06,293 INFO L202 PluginConnector]: Adding new model bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:07:06 BasicIcfg [2021-06-24 20:07:06,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 20:07:06,294 INFO L168 Benchmark]: Toolchain (without parser) took 1749.62 ms. Allocated memory is still 189.8 MB. Free memory was 169.5 MB in the beginning and 99.0 MB in the end (delta: 70.5 MB). Peak memory consumption was 71.1 MB. Max. memory is 8.0 GB. [2021-06-24 20:07:06,295 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 189.8 MB. Free memory is still 170.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 20:07:06,295 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.80 ms. Allocated memory is still 189.8 MB. Free memory was 169.5 MB in the beginning and 167.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-24 20:07:06,295 INFO L168 Benchmark]: Boogie Preprocessor took 17.13 ms. Allocated memory is still 189.8 MB. Free memory was 167.6 MB in the beginning and 166.7 MB in the end (delta: 863.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 20:07:06,296 INFO L168 Benchmark]: RCFGBuilder took 293.34 ms. Allocated memory is still 189.8 MB. Free memory was 166.7 MB in the beginning and 154.3 MB in the end (delta: 12.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-06-24 20:07:06,296 INFO L168 Benchmark]: TraceAbstraction took 1397.90 ms. Allocated memory is still 189.8 MB. Free memory was 153.8 MB in the beginning and 99.0 MB in the end (delta: 54.8 MB). Peak memory consumption was 55.4 MB. Max. memory is 8.0 GB. [2021-06-24 20:07:06,297 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 0.15 ms. Allocated memory is still 189.8 MB. Free memory is still 170.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 35.80 ms. Allocated memory is still 189.8 MB. Free memory was 169.5 MB in the beginning and 167.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 17.13 ms. Allocated memory is still 189.8 MB. Free memory was 167.6 MB in the beginning and 166.7 MB in the end (delta: 863.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 293.34 ms. Allocated memory is still 189.8 MB. Free memory was 166.7 MB in the beginning and 154.3 MB in the end (delta: 12.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1397.90 ms. Allocated memory is still 189.8 MB. Free memory was 153.8 MB in the beginning and 99.0 MB in the end (delta: 54.8 MB). Peak memory consumption was 55.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 2257, positive: 1775, positive conditional: 1775, positive unconditional: 0, negative: 482, negative conditional: 482, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 1957, positive: 1775, positive conditional: 1775, positive unconditional: 0, negative: 182, negative conditional: 182, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 1957, positive: 1775, positive conditional: 0, positive unconditional: 1775, negative: 182, negative conditional: 0, negative unconditional: 182, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 212, positive: 196, positive conditional: 0, positive unconditional: 196, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 212, positive: 180, positive conditional: 0, positive unconditional: 180, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 32, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 32, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 189, positive: 93, positive conditional: 0, positive unconditional: 93, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1957, positive: 1579, positive conditional: 0, positive unconditional: 1579, negative: 166, negative conditional: 0, negative unconditional: 166, unknown: 212, unknown conditional: 0, unknown unconditional: 212] , Statistics on independence cache: Total cache size (in pairs): 212, Positive cache size: 196, Positive conditional cache size: 0, Positive unconditional cache size: 196, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 ], Maximal queried relation: 0, Independence queries for same thread: 300 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 3768, positive: 3422, positive conditional: 3422, positive unconditional: 0, negative: 346, negative conditional: 346, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 3509, positive: 3422, positive conditional: 3422, positive unconditional: 0, negative: 87, negative conditional: 87, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 3509, positive: 3412, positive conditional: 0, positive unconditional: 3412, negative: 97, negative conditional: 0, negative unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 205, positive: 195, positive conditional: 0, positive unconditional: 195, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 205, positive: 188, positive conditional: 0, positive unconditional: 188, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 17, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 26, positive: 10, positive conditional: 3, positive unconditional: 7, negative: 16, negative conditional: 6, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 112, positive: 46, positive conditional: 16, positive unconditional: 30, negative: 67, negative conditional: 20, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3509, positive: 3217, positive conditional: 0, positive unconditional: 3217, negative: 87, negative conditional: 0, negative unconditional: 87, unknown: 205, unknown conditional: 0, unknown unconditional: 205] , Statistics on independence cache: Total cache size (in pairs): 214, Positive cache size: 198, Positive conditional cache size: 3, Positive unconditional cache size: 195, Negative cache size: 16, Negative conditional cache size: 6, Negative unconditional cache size: 10, SemanticConditionEliminator.Independence Queries: [ total: 211, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 201, negative conditional: 35, negative unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 211, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 201, negative conditional: 35, negative unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 26, positive: 10, positive conditional: 3, positive unconditional: 7, negative: 16, negative conditional: 6, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 112, positive: 46, positive conditional: 16, positive unconditional: 30, negative: 67, negative conditional: 20, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 211, positive: 7, positive conditional: 7, positive unconditional: 0, negative: 195, negative conditional: 29, negative unconditional: 166, unknown: 9, unknown conditional: 9, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 214, Positive cache size: 198, Positive conditional cache size: 3, Positive unconditional cache size: 195, Negative cache size: 16, Negative conditional cache size: 6, Negative unconditional cache size: 10, Eliminated conditions: 166, SemanticConditionEliminator.Independence Queries: [ total: 211, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 201, negative conditional: 35, negative unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 211, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 201, negative conditional: 35, negative unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 26, positive: 10, positive conditional: 3, positive unconditional: 7, negative: 16, negative conditional: 6, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 112, positive: 46, positive conditional: 16, positive unconditional: 30, negative: 67, negative conditional: 20, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 211, positive: 7, positive conditional: 7, positive unconditional: 0, negative: 195, negative conditional: 29, negative unconditional: 166, unknown: 9, unknown conditional: 9, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 214, Positive cache size: 198, Positive conditional cache size: 3, Positive unconditional cache size: 195, Negative cache size: 16, Negative conditional cache size: 6, Negative unconditional cache size: 10, Eliminated conditions: 166, SemanticConditionEliminator.Independence Queries: [ total: 211, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 201, negative conditional: 35, negative unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 211, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 201, negative conditional: 35, negative unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 26, positive: 10, positive conditional: 3, positive unconditional: 7, negative: 16, negative conditional: 6, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 112, positive: 46, positive conditional: 16, positive unconditional: 30, negative: 67, negative conditional: 20, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 211, positive: 7, positive conditional: 7, positive unconditional: 0, negative: 195, negative conditional: 29, negative unconditional: 166, unknown: 9, unknown conditional: 9, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 214, Positive cache size: 198, Positive conditional cache size: 3, Positive unconditional cache size: 195, Negative cache size: 16, Negative conditional cache size: 6, Negative unconditional cache size: 10, Eliminated conditions: 166 ], Maximal queried relation: 3, Independence queries for same thread: 259 - CounterExampleResult [Line: 34]: assertion can be violated assertion can be violated We found a FailurePath: [L13] 0 pendingIo := 1; VAL [pendingIo=1] [L14] 0 stopped := false; VAL [pendingIo=1, stopped=false] [L15] 0 stoppingEvent := false; VAL [pendingIo=1, stopped=false, stoppingEvent=false] [L16] 0 stoppingFlag := false; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L18] FORK 0 fork 0 ServerThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L19] FORK 0 fork 1 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L44] 2 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L20] FORK 0 fork 2 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L45] 2 pendingIo := pendingIo + 1; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L44] 3 assume !stoppingFlag; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L66] 1 stoppingFlag := true; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=true] [L21] FORK 0 fork 3 DeviceThread(); VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=true] [L34] 2 assert !stopped; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=true] [L76] 1 pendingIo := pendingIo - 1; [L77] COND FALSE 1 !(pendingIo == 0) VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L53] 2 pendingIo := pendingIo - 1; [L54] COND TRUE 2 pendingIo == 0 [L55] 2 stoppingEvent := true; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L45] 3 pendingIo := pendingIo + 1; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L68] 1 assume stoppingEvent; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L69] 1 stopped := true; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] [L34] 3 assert !stopped; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 50 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 461.9ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.7ms, PartialOrderReductionTime: 373.4ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: DeviceThreadThread1of1ForFork2 with 1 thread instances CFG has 7 procedures, 50 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 774.9ms, OverallIterations: 4, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.1ms, PartialOrderReductionTime: 344.7ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.3ms SsaConstructionTime, 54.3ms SatisfiabilityAnalysisTime, 155.7ms InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 142 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...