/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-DelaySleep-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth07-incorrect.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 19:01:00,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 19:01:00,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 19:01:00,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-24 19:01:00,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-24 19:01:00,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-24 19:01:00,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-24 19:01:00,609 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-DelaySleep-NoLbe-Lockstep.epf [2021-06-24 19:01:00,639 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 19:01:00,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 19:01:00,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 19:01:00,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 19:01:00,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 19:01:00,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 19:01:00,642 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 19:01:00,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 19:01:00,643 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 19:01:00,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 19:01:00,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 19:01:00,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 19:01:00,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 19:01:00,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 19:01:00,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 19:01:00,644 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 19:01:00,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 19:01:00,644 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 19:01:00,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 19:01:00,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 19:01:00,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 19:01:00,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 19:01:00,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 19:01:00,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 19:01:00,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 19:01:00,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 19:01:00,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 19:01:00,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 19:01:00,646 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-24 19:01:00,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 19:01:00,646 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 19:01:00,646 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-24 19:01:00,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 19:01:00,646 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-24 19:01:00,646 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 19:01:00,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 19:01:00,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 19:01:00,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 19:01:00,949 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 19:01:00,949 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 19:01:00,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth07-incorrect.bpl [2021-06-24 19:01:00,950 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth07-incorrect.bpl' [2021-06-24 19:01:00,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 19:01:00,979 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 19:01:00,980 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 19:01:00,980 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 19:01:00,980 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 19:01:00,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:00" (1/1) ... [2021-06-24 19:01:00,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:00" (1/1) ... [2021-06-24 19:01:01,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 19:01:01,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 19:01:01,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 19:01:01,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 19:01:01,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:00" (1/1) ... [2021-06-24 19:01:01,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:00" (1/1) ... [2021-06-24 19:01:01,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:00" (1/1) ... [2021-06-24 19:01:01,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:00" (1/1) ... [2021-06-24 19:01:01,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:00" (1/1) ... [2021-06-24 19:01:01,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:00" (1/1) ... [2021-06-24 19:01:01,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:00" (1/1) ... [2021-06-24 19:01:01,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 19:01:01,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 19:01:01,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 19:01:01,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 19:01:01,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:00" (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 19:01:01,081 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 19:01:01,081 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 19:01:01,082 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 19:01:01,082 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 19:01:01,082 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 19:01:01,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 19:01:01,082 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 19:01:01,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 19:01:01,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 19:01:01,084 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 19:01:01,328 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 19:01:01,328 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 19:01:01,330 INFO L202 PluginConnector]: Adding new model bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 07:01:01 BoogieIcfgContainer [2021-06-24 19:01:01,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 19:01:01,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 19:01:01,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 19:01:01,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 19:01:01,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:00" (1/2) ... [2021-06-24 19:01:01,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42757d34 and model type bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 07:01:01, skipping insertion in model container [2021-06-24 19:01:01,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 07:01:01" (2/2) ... [2021-06-24 19:01:01,335 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth07-incorrect.bpl [2021-06-24 19:01:01,339 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 19:01:01,339 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 19:01:01,339 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 19:01:01,340 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 19:01:01,413 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 19:01:01,443 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 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 19:01:01,512 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 19:01:01,512 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 19:01:01,512 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 19:01:01,512 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 19:01:01,512 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 19:01:01,512 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 19:01:01,512 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 19:01:01,513 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork6======== [2021-06-24 19:01:01,670 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:01:01,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:01:01,675 INFO L82 PathProgramCache]: Analyzing trace with hash -946093816, now seen corresponding path program 1 times [2021-06-24 19:01:01,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:01:01,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493805653] [2021-06-24 19:01:01,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:01:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:01,772 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 19:01:01,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:01:01,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493805653] [2021-06-24 19:01:01,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493805653] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:01:01,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:01:01,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 19:01:01,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991943314] [2021-06-24 19:01:01,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 19:01:01,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:01:01,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 19:01:01,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 19:01:01,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:01,789 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:01:01,790 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 19:01:01,790 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:03,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:03,952 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 19:01:03,953 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:01:03,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:01:03,956 INFO L82 PathProgramCache]: Analyzing trace with hash -930133270, now seen corresponding path program 1 times [2021-06-24 19:01:03,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:01:03,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809368295] [2021-06-24 19:01:03,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:01:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:04,006 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 19:01:04,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:01:04,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809368295] [2021-06-24 19:01:04,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809368295] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:01:04,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:01:04,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 19:01:04,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931229724] [2021-06-24 19:01:04,008 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 19:01:04,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:01:04,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 19:01:04,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 19:01:04,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:04,009 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:01:04,010 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 19:01:04,010 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:04,010 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:16,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:16,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:16,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 19:01:16,230 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:01:16,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:01:16,231 INFO L82 PathProgramCache]: Analyzing trace with hash 2027683663, now seen corresponding path program 1 times [2021-06-24 19:01:16,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:01:16,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645006517] [2021-06-24 19:01:16,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:01:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:16,357 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-24 19:01:16,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:01:16,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645006517] [2021-06-24 19:01:16,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645006517] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:01:16,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:01:16,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-24 19:01:16,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768329425] [2021-06-24 19:01:16,359 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-24 19:01:16,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:01:16,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-24 19:01:16,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=37, Unknown=0, NotChecked=0, Total=72 [2021-06-24 19:01:16,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:16,359 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:01:16,360 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 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 19:01:16,360 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:16,360 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:16,360 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:20,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:20,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:20,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-24 19:01:20,498 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 19:01:20,499 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:01:20,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:01:20,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1949691121, now seen corresponding path program 2 times [2021-06-24 19:01:20,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:01:20,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589840045] [2021-06-24 19:01:20,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:01:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 19:01:20,512 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 19:01:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 19:01:20,525 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 19:01:20,541 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-24 19:01:20,541 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-06-24 19:01:20,541 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-24 19:01:20,545 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork6 was UNSAFE (1/8) [2021-06-24 19:01:20,547 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 19:01:20,561 INFO L202 PluginConnector]: Adding new model bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 07:01:20 BasicIcfg [2021-06-24 19:01:20,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 19:01:20,563 INFO L168 Benchmark]: Toolchain (without parser) took 19583.07 ms. Allocated memory was 206.6 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 185.7 MB in the beginning and 2.5 GB in the end (delta: -2.4 GB). Peak memory consumption was 625.8 MB. Max. memory is 8.0 GB. [2021-06-24 19:01:20,563 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 206.6 MB. Free memory is still 186.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 19:01:20,563 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.53 ms. Allocated memory is still 206.6 MB. Free memory was 185.6 MB in the beginning and 183.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-24 19:01:20,563 INFO L168 Benchmark]: Boogie Preprocessor took 14.57 ms. Allocated memory is still 206.6 MB. Free memory was 183.8 MB in the beginning and 182.9 MB in the end (delta: 869.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 19:01:20,564 INFO L168 Benchmark]: RCFGBuilder took 304.63 ms. Allocated memory is still 206.6 MB. Free memory was 182.9 MB in the beginning and 170.2 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-24 19:01:20,564 INFO L168 Benchmark]: TraceAbstraction took 19230.68 ms. Allocated memory was 206.6 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 169.8 MB in the beginning and 2.5 GB in the end (delta: -2.4 GB). Peak memory consumption was 610.0 MB. Max. memory is 8.0 GB. [2021-06-24 19:01:20,565 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 0.11 ms. Allocated memory is still 206.6 MB. Free memory is still 186.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 28.53 ms. Allocated memory is still 206.6 MB. Free memory was 185.6 MB in the beginning and 183.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.57 ms. Allocated memory is still 206.6 MB. Free memory was 183.8 MB in the beginning and 182.9 MB in the end (delta: 869.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 304.63 ms. Allocated memory is still 206.6 MB. Free memory was 182.9 MB in the beginning and 170.2 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 19230.68 ms. Allocated memory was 206.6 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 169.8 MB in the beginning and 2.5 GB in the end (delta: -2.4 GB). Peak memory consumption was 610.0 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: 867553, positive: 822839, positive conditional: 822839, positive unconditional: 0, negative: 44714, negative conditional: 44714, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 831461, positive: 822839, positive conditional: 822839, positive unconditional: 0, negative: 8622, negative conditional: 8622, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 831461, positive: 820704, positive conditional: 0, positive unconditional: 820704, negative: 10757, negative conditional: 0, negative unconditional: 10757, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1335, positive: 1279, positive conditional: 0, positive unconditional: 1279, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1335, positive: 1233, positive conditional: 0, positive unconditional: 1233, negative: 102, negative conditional: 0, negative unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 102, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 192, positive: 113, positive conditional: 67, positive unconditional: 46, negative: 79, negative conditional: 23, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 835, positive: 379, positive conditional: 233, positive unconditional: 146, negative: 456, negative conditional: 187, negative unconditional: 269, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 831461, positive: 819425, positive conditional: 0, positive unconditional: 819425, negative: 10701, negative conditional: 0, negative unconditional: 10701, unknown: 1335, unknown conditional: 0, unknown unconditional: 1335] , Statistics on independence cache: Total cache size (in pairs): 1425, Positive cache size: 1346, Positive conditional cache size: 67, Positive unconditional cache size: 1279, Negative cache size: 79, Negative conditional cache size: 23, Negative unconditional cache size: 56, SemanticConditionEliminator.Independence Queries: [ total: 24466, positive: 2135, positive conditional: 2135, positive unconditional: 0, negative: 22331, negative conditional: 3538, negative unconditional: 18793, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 24466, positive: 2135, positive conditional: 2135, positive unconditional: 0, negative: 22331, negative conditional: 3538, negative unconditional: 18793, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 192, positive: 113, positive conditional: 67, positive unconditional: 46, negative: 79, negative conditional: 23, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 835, positive: 379, positive conditional: 233, positive unconditional: 146, negative: 456, negative conditional: 187, negative unconditional: 269, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 24466, positive: 2068, positive conditional: 2068, positive unconditional: 0, negative: 22308, negative conditional: 3515, negative unconditional: 18793, unknown: 90, unknown conditional: 90, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1425, Positive cache size: 1346, Positive conditional cache size: 67, Positive unconditional cache size: 1279, Negative cache size: 79, Negative conditional cache size: 23, Negative unconditional cache size: 56, Eliminated conditions: 18793, SemanticConditionEliminator.Independence Queries: [ total: 24466, positive: 2135, positive conditional: 2135, positive unconditional: 0, negative: 22331, negative conditional: 3538, negative unconditional: 18793, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 24466, positive: 2135, positive conditional: 2135, positive unconditional: 0, negative: 22331, negative conditional: 3538, negative unconditional: 18793, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 192, positive: 113, positive conditional: 67, positive unconditional: 46, negative: 79, negative conditional: 23, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 835, positive: 379, positive conditional: 233, positive unconditional: 146, negative: 456, negative conditional: 187, negative unconditional: 269, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 24466, positive: 2068, positive conditional: 2068, positive unconditional: 0, negative: 22308, negative conditional: 3515, negative unconditional: 18793, unknown: 90, unknown conditional: 90, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1425, Positive cache size: 1346, Positive conditional cache size: 67, Positive unconditional cache size: 1279, Negative cache size: 79, Negative conditional cache size: 23, Negative unconditional cache size: 56, Eliminated conditions: 18793, SemanticConditionEliminator.Independence Queries: [ total: 24466, positive: 2135, positive conditional: 2135, positive unconditional: 0, negative: 22331, negative conditional: 3538, negative unconditional: 18793, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 24466, positive: 2135, positive conditional: 2135, positive unconditional: 0, negative: 22331, negative conditional: 3538, negative unconditional: 18793, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 192, positive: 113, positive conditional: 67, positive unconditional: 46, negative: 79, negative conditional: 23, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 835, positive: 379, positive conditional: 233, positive unconditional: 146, negative: 456, negative conditional: 187, negative unconditional: 269, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 24466, positive: 2068, positive conditional: 2068, positive unconditional: 0, negative: 22308, negative conditional: 3515, negative unconditional: 18793, unknown: 90, unknown conditional: 90, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1425, Positive cache size: 1346, Positive conditional cache size: 67, Positive unconditional cache size: 1279, Negative cache size: 79, Negative conditional cache size: 23, Negative unconditional cache size: 56, Eliminated conditions: 18793 ], Maximal queried relation: 3, Independence queries for same thread: 36092 - CounterExampleResult [Line: 38]: 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] [L48] 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] [L49] 2 pendingIo := pendingIo + 1; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L48] 3 assume !stoppingFlag; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L21] FORK 0 fork 3 DeviceThread(); VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L38] 2 assert !stopped; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L49] 3 pendingIo := pendingIo + 1; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L48] 4 assume !stoppingFlag; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L22] FORK 0 fork 4 DeviceThread(); VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L57] 2 pendingIo := pendingIo - 1; [L58] COND FALSE 2 !(pendingIo == 0) VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L38] 3 assert !stopped; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L49] 4 pendingIo := pendingIo + 1; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L48] 5 assume !stoppingFlag; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L23] FORK 0 fork 5 DeviceThread(); VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L48] 2 assume !stoppingFlag; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L57] 3 pendingIo := pendingIo - 1; [L58] COND FALSE 3 !(pendingIo == 0) VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L38] 4 assert !stopped; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L49] 5 pendingIo := pendingIo + 1; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L48] 6 assume !stoppingFlag; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L24] FORK 0 fork 6 DeviceThread(); VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L49] 2 pendingIo := pendingIo + 1; VAL [pendingIo=4, stopped=false, stoppingEvent=false, stoppingFlag=false] [L48] 3 assume !stoppingFlag; VAL [pendingIo=4, stopped=false, stoppingEvent=false, stoppingFlag=false] [L57] 4 pendingIo := pendingIo - 1; [L58] COND FALSE 4 !(pendingIo == 0) VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L38] 5 assert !stopped; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L49] 6 pendingIo := pendingIo + 1; VAL [pendingIo=4, stopped=false, stoppingEvent=false, stoppingFlag=false] [L48] 7 assume !stoppingFlag; VAL [pendingIo=4, stopped=false, stoppingEvent=false, stoppingFlag=false] [L70] 1 stoppingFlag := true; VAL [pendingIo=4, stopped=false, stoppingEvent=false, stoppingFlag=true] [L25] FORK 0 fork 7 DeviceThread(); VAL [pendingIo=4, stopped=false, stoppingEvent=false, stoppingFlag=true] [L38] 2 assert !stopped; VAL [pendingIo=4, stopped=false, stoppingEvent=false, stoppingFlag=true] [L49] 3 pendingIo := pendingIo + 1; VAL [pendingIo=5, stopped=false, stoppingEvent=false, stoppingFlag=true] [L57] 5 pendingIo := pendingIo - 1; [L58] COND FALSE 5 !(pendingIo == 0) VAL [pendingIo=4, stopped=false, stoppingEvent=false, stoppingFlag=true] [L38] 6 assert !stopped; VAL [pendingIo=4, stopped=false, stoppingEvent=false, stoppingFlag=true] [L80] 1 pendingIo := pendingIo - 1; [L81] COND FALSE 1 !(pendingIo == 0) VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=true] [L57] 2 pendingIo := pendingIo - 1; [L58] COND FALSE 2 !(pendingIo == 0) VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=true] [L38] 3 assert !stopped; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=true] [L57] 6 pendingIo := pendingIo - 1; [L58] COND FALSE 6 !(pendingIo == 0) VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L57] 3 pendingIo := pendingIo - 1; [L58] COND TRUE 3 pendingIo == 0 [L59] 3 stoppingEvent := true; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L49] 7 pendingIo := pendingIo + 1; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L72] 1 assume stoppingEvent; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L73] 1 stopped := true; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] [L38] 7 assert !stopped; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: DeviceThreadThread1of1ForFork6 with 1 thread instances CFG has 11 procedures, 82 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19072.6ms, OverallIterations: 4, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 24.3ms, PartialOrderReductionTime: 18650.1ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 57.1ms SatisfiabilityAnalysisTime, 163.7ms InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 351 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 13/13 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...