/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-NewStatesSleepPersistentFixedOrder-NoLbe-Random42.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth04-incorrect.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 21:25:27,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 21:25:27,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 21:25:27,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-24 21:25:27,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 21:25:27,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 21:25:28,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 21:25:28,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 21:25:28,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 21:25:28,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 21:25:28,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 21:25:28,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 21:25:28,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 21:25:28,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 21:25:28,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 21:25:28,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 21:25:28,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-24 21:25:28,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-24 21:25:28,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-24 21:25:28,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-24 21:25:28,029 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-NewStatesSleepPersistentFixedOrder-NoLbe-Random42.epf [2021-06-24 21:25:28,057 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 21:25:28,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 21:25:28,058 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 21:25:28,058 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 21:25:28,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 21:25:28,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 21:25:28,060 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 21:25:28,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 21:25:28,061 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 21:25:28,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 21:25:28,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 21:25:28,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 21:25:28,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 21:25:28,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 21:25:28,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 21:25:28,062 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 21:25:28,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 21:25:28,062 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 21:25:28,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 21:25:28,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 21:25:28,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 21:25:28,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 21:25:28,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 21:25:28,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 21:25:28,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 21:25:28,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 21:25:28,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 21:25:28,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 21:25:28,081 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-24 21:25:28,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 21:25:28,082 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 21:25:28,082 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-24 21:25:28,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 21:25:28,082 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-06-24 21:25:28,082 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-24 21:25:28,082 INFO L138 SettingsManager]: * Random seed used by POR DFS order=42 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 21:25:28,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 21:25:28,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 21:25:28,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 21:25:28,348 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 21:25:28,349 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 21:25:28,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth04-incorrect.bpl [2021-06-24 21:25:28,350 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth04-incorrect.bpl' [2021-06-24 21:25:28,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 21:25:28,394 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 21:25:28,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 21:25:28,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 21:25:28,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 21:25:28,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:25:28" (1/1) ... [2021-06-24 21:25:28,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:25:28" (1/1) ... [2021-06-24 21:25:28,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 21:25:28,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 21:25:28,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 21:25:28,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 21:25:28,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:25:28" (1/1) ... [2021-06-24 21:25:28,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:25:28" (1/1) ... [2021-06-24 21:25:28,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:25:28" (1/1) ... [2021-06-24 21:25:28,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:25:28" (1/1) ... [2021-06-24 21:25:28,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:25:28" (1/1) ... [2021-06-24 21:25:28,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:25:28" (1/1) ... [2021-06-24 21:25:28,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:25:28" (1/1) ... [2021-06-24 21:25:28,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 21:25:28,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 21:25:28,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 21:25:28,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 21:25:28,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:25:28" (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 21:25:28,486 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 21:25:28,487 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 21:25:28,487 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 21:25:28,487 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 21:25:28,487 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 21:25:28,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 21:25:28,487 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 21:25:28,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 21:25:28,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 21:25:28,488 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 21:25:28,715 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 21:25:28,716 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 21:25:28,717 INFO L202 PluginConnector]: Adding new model bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:25:28 BoogieIcfgContainer [2021-06-24 21:25:28,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 21:25:28,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 21:25:28,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 21:25:28,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 21:25:28,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:25:28" (1/2) ... [2021-06-24 21:25:28,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60bb3368 and model type bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:25:28, skipping insertion in model container [2021-06-24 21:25:28,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:25:28" (2/2) ... [2021-06-24 21:25:28,723 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth04-incorrect.bpl [2021-06-24 21:25:28,727 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 21:25:28,727 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 21:25:28,727 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 21:25:28,728 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 21:25:28,801 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 21:25:28,817 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 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 21:25:28,859 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 21:25:28,859 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 21:25:28,859 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 21:25:28,860 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 21:25:28,860 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 21:25:28,860 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 21:25:28,860 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 21:25:28,861 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-24 21:25:31,536 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/5) [2021-06-24 21:25:31,538 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 21:25:31,555 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 21:25:31,555 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 21:25:31,555 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 21:25:31,555 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 21:25:31,555 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 21:25:31,555 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 21:25:31,555 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 21:25:31,555 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork4======== [2021-06-24 21:25:31,598 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 21:25:31,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 21:25:31,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1896204783, now seen corresponding path program 1 times [2021-06-24 21:25:31,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 21:25:31,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233519561] [2021-06-24 21:25:31,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 21:25:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:25:31,689 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 21:25:31,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 21:25:31,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233519561] [2021-06-24 21:25:31,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233519561] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 21:25:31,690 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 21:25:31,690 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 21:25:31,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148828798] [2021-06-24 21:25:31,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 21:25:31,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 21:25:31,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 21:25:31,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 21:25:31,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:25:31,704 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 21:25:31,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 21:25:31,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:25:31,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:25:31,782 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 21:25:31,783 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 21:25:31,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 21:25:31,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1005265115, now seen corresponding path program 1 times [2021-06-24 21:25:31,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 21:25:31,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041998238] [2021-06-24 21:25:31,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 21:25:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:25:31,815 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 21:25:31,815 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 21:25:31,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041998238] [2021-06-24 21:25:31,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041998238] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 21:25:31,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 21:25:31,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 21:25:31,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367686465] [2021-06-24 21:25:31,818 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 21:25:31,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 21:25:31,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 21:25:31,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 21:25:31,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:25:31,820 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 21:25:31,820 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 7.5) 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 21:25:31,820 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:25:31,820 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:25:31,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:25:31,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:25:31,892 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 21:25:31,893 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 21:25:31,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 21:25:31,893 INFO L82 PathProgramCache]: Analyzing trace with hash 582293125, now seen corresponding path program 1 times [2021-06-24 21:25:31,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 21:25:31,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218045643] [2021-06-24 21:25:31,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 21:25:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 21:25:31,914 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 21:25:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 21:25:31,927 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 21:25:31,941 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-24 21:25:31,942 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-06-24 21:25:31,942 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 21:25:31,999 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork4 was UNSAFE (2/5) [2021-06-24 21:25:32,000 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 21:25:32,016 INFO L202 PluginConnector]: Adding new model bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:25:32 BasicIcfg [2021-06-24 21:25:32,017 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 21:25:32,018 INFO L168 Benchmark]: Toolchain (without parser) took 3648.72 ms. Allocated memory was 192.9 MB in the beginning and 406.8 MB in the end (delta: 213.9 MB). Free memory was 172.9 MB in the beginning and 379.5 MB in the end (delta: -206.6 MB). Peak memory consumption was 24.7 MB. Max. memory is 8.0 GB. [2021-06-24 21:25:32,018 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 192.9 MB. Free memory is still 173.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 21:25:32,019 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.10 ms. Allocated memory is still 192.9 MB. Free memory was 172.9 MB in the beginning and 171.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-24 21:25:32,020 INFO L168 Benchmark]: Boogie Preprocessor took 10.28 ms. Allocated memory is still 192.9 MB. Free memory was 171.0 MB in the beginning and 170.1 MB in the end (delta: 854.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 21:25:32,021 INFO L168 Benchmark]: RCFGBuilder took 283.28 ms. Allocated memory is still 192.9 MB. Free memory was 170.1 MB in the beginning and 157.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-24 21:25:32,022 INFO L168 Benchmark]: TraceAbstraction took 3297.75 ms. Allocated memory was 192.9 MB in the beginning and 406.8 MB in the end (delta: 213.9 MB). Free memory was 157.2 MB in the beginning and 379.5 MB in the end (delta: -222.3 MB). Peak memory consumption was 8.9 MB. Max. memory is 8.0 GB. [2021-06-24 21:25:32,023 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 0.10 ms. Allocated memory is still 192.9 MB. Free memory is still 173.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 27.10 ms. Allocated memory is still 192.9 MB. Free memory was 172.9 MB in the beginning and 171.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 10.28 ms. Allocated memory is still 192.9 MB. Free memory was 171.0 MB in the beginning and 170.1 MB in the end (delta: 854.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 283.28 ms. Allocated memory is still 192.9 MB. Free memory was 170.1 MB in the beginning and 157.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3297.75 ms. Allocated memory was 192.9 MB in the beginning and 406.8 MB in the end (delta: 213.9 MB). Free memory was 157.2 MB in the beginning and 379.5 MB in the end (delta: -222.3 MB). Peak memory consumption was 8.9 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: 54847, positive: 45321, positive conditional: 44151, positive unconditional: 1170, negative: 9526, negative conditional: 9477, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 48534, positive: 45321, positive conditional: 44151, positive unconditional: 1170, negative: 3213, negative conditional: 3164, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 48534, positive: 45321, positive conditional: 0, positive unconditional: 45321, negative: 3213, negative conditional: 0, negative unconditional: 3213, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 975, positive: 935, positive conditional: 0, positive unconditional: 935, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 975, positive: 900, positive conditional: 0, positive unconditional: 900, negative: 75, negative conditional: 0, negative unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 75, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 75, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 308, positive: 123, positive conditional: 0, positive unconditional: 123, negative: 184, negative conditional: 0, negative unconditional: 184, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 48534, positive: 44386, positive conditional: 0, positive unconditional: 44386, negative: 3173, negative conditional: 0, negative unconditional: 3173, unknown: 975, unknown conditional: 0, unknown unconditional: 975] , Statistics on independence cache: Total cache size (in pairs): 975, Positive cache size: 935, Positive conditional cache size: 0, Positive unconditional cache size: 935, Negative cache size: 40, Negative conditional cache size: 0, Negative unconditional cache size: 40 ], Maximal queried relation: 0, Independence queries for same thread: 6313 - StatisticsResult: Persistent set benchmarks Persistent set computation time[ms]: 2040, Number of persistent set computation: 26921, Number of trivial persistent sets: 26687, Underlying independence relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 54847, positive: 45321, positive conditional: 44151, positive unconditional: 1170, negative: 9526, negative conditional: 9477, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 48534, positive: 45321, positive conditional: 44151, positive unconditional: 1170, negative: 3213, negative conditional: 3164, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 48534, positive: 45321, positive conditional: 0, positive unconditional: 45321, negative: 3213, negative conditional: 0, negative unconditional: 3213, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 975, positive: 935, positive conditional: 0, positive unconditional: 935, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 975, positive: 900, positive conditional: 0, positive unconditional: 900, negative: 75, negative conditional: 0, negative unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 75, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 75, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 308, positive: 123, positive conditional: 0, positive unconditional: 123, negative: 184, negative conditional: 0, negative unconditional: 184, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 48534, positive: 44386, positive conditional: 0, positive unconditional: 44386, negative: 3173, negative conditional: 0, negative unconditional: 3173, unknown: 975, unknown conditional: 0, unknown unconditional: 975] , Statistics on independence cache: Total cache size (in pairs): 975, Positive cache size: 935, Positive conditional cache size: 0, Positive unconditional cache size: 935, Negative cache size: 40, Negative conditional cache size: 0, Negative unconditional cache size: 40 ], Maximal queried relation: 0, Independence queries for same thread: 6313 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 2653, positive: 2474, positive conditional: 1715, positive unconditional: 759, negative: 179, negative conditional: 160, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 2508, positive: 2474, positive conditional: 1715, positive unconditional: 759, negative: 34, negative conditional: 15, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 2508, positive: 2474, positive conditional: 0, positive unconditional: 2474, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 643, positive: 625, positive conditional: 0, positive unconditional: 625, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 643, positive: 614, positive conditional: 0, positive unconditional: 614, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 29, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 30, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 19, negative conditional: 1, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 50, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 40, negative conditional: 2, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2508, positive: 1849, positive conditional: 0, positive unconditional: 1849, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 643, unknown conditional: 0, unknown unconditional: 643] , Statistics on independence cache: Total cache size (in pairs): 644, Positive cache size: 625, Positive conditional cache size: 0, Positive unconditional cache size: 625, Negative cache size: 19, Negative conditional cache size: 1, Negative unconditional cache size: 18, SemanticConditionEliminator.Independence Queries: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 31, negative conditional: 1, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 31, negative conditional: 1, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 30, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 19, negative conditional: 1, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 50, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 40, negative conditional: 2, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 644, Positive cache size: 625, Positive conditional cache size: 0, Positive unconditional cache size: 625, Negative cache size: 19, Negative conditional cache size: 1, Negative unconditional cache size: 18, Eliminated conditions: 23, SemanticConditionEliminator.Independence Queries: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 31, negative conditional: 1, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 31, negative conditional: 1, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 30, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 19, negative conditional: 1, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 50, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 40, negative conditional: 2, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 644, Positive cache size: 625, Positive conditional cache size: 0, Positive unconditional cache size: 625, Negative cache size: 19, Negative conditional cache size: 1, Negative unconditional cache size: 18, Eliminated conditions: 23 ], Maximal queried relation: 2, Independence queries for same thread: 145 - StatisticsResult: Persistent set benchmarks Persistent set computation time[ms]: 122, Number of persistent set computation: 938, Number of trivial persistent sets: 917, Underlying independence relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 2653, positive: 2474, positive conditional: 1715, positive unconditional: 759, negative: 179, negative conditional: 160, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 2508, positive: 2474, positive conditional: 1715, positive unconditional: 759, negative: 34, negative conditional: 15, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 2508, positive: 2474, positive conditional: 0, positive unconditional: 2474, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 643, positive: 625, positive conditional: 0, positive unconditional: 625, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 643, positive: 614, positive conditional: 0, positive unconditional: 614, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 29, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 30, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 19, negative conditional: 1, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 50, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 40, negative conditional: 2, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2508, positive: 1849, positive conditional: 0, positive unconditional: 1849, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 643, unknown conditional: 0, unknown unconditional: 643] , Statistics on independence cache: Total cache size (in pairs): 644, Positive cache size: 625, Positive conditional cache size: 0, Positive unconditional cache size: 625, Negative cache size: 19, Negative conditional cache size: 1, Negative unconditional cache size: 18, SemanticConditionEliminator.Independence Queries: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 31, negative conditional: 1, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 31, negative conditional: 1, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 30, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 19, negative conditional: 1, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 50, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 40, negative conditional: 2, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 644, Positive cache size: 625, Positive conditional cache size: 0, Positive unconditional cache size: 625, Negative cache size: 19, Negative conditional cache size: 1, Negative unconditional cache size: 18, Eliminated conditions: 23, SemanticConditionEliminator.Independence Queries: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 31, negative conditional: 1, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 31, negative conditional: 1, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 30, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 19, negative conditional: 1, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 50, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 40, negative conditional: 2, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 644, Positive cache size: 625, Positive conditional cache size: 0, Positive unconditional cache size: 625, Negative cache size: 19, Negative conditional cache size: 1, Negative unconditional cache size: 18, Eliminated conditions: 23 ], Maximal queried relation: 2, Independence queries for same thread: 145 - CounterExampleResult [Line: 35]: 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] [L20] FORK 0 fork 2 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L21] FORK 0 fork 3 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L22] FORK 0 fork 4 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L45] 5 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L46] 5 pendingIo := pendingIo + 1; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L35] 5 assert !stopped; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L54] 5 pendingIo := pendingIo - 1; [L55] COND FALSE 5 !(pendingIo == 0) VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L45] 5 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L67] 1 stoppingFlag := true; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L77] 1 pendingIo := pendingIo - 1; [L78] COND TRUE 1 pendingIo == 0 [L79] 1 stoppingEvent := true; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L46] 5 pendingIo := pendingIo + 1; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L69] 1 assume stoppingEvent; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L70] 1 stopped := true; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] [L35] 5 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 8 procedures, 58 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2707.1ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.5ms, PartialOrderReductionTime: 2653.9ms, 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: DeviceThreadThread1of1ForFork4 with 1 thread instances CFG has 8 procedures, 58 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 451.0ms, OverallIterations: 3, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.9ms, PartialOrderReductionTime: 191.1ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 6, 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: 5.4ms SsaConstructionTime, 33.5ms SatisfiabilityAnalysisTime, 52.6ms InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 46 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...