/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-Random521.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth08-incorrect.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 19:22:35,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 19:22:35,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 19:22:35,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-24 19:22:35,888 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-Random521.epf [2021-06-24 19:22:35,903 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 19:22:35,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 19:22:35,904 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 19:22:35,904 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 19:22:35,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 19:22:35,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 19:22:35,905 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 19:22:35,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 19:22:35,905 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 19:22:35,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 19:22:35,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 19:22:35,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 19:22:35,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 19:22:35,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 19:22:35,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 19:22:35,906 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 19:22:35,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 19:22:35,906 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 19:22:35,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 19:22:35,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 19:22:35,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 19:22:35,906 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 19:22:35,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 19:22:35,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 19:22:35,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 19:22:35,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 19:22:35,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 19:22:35,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 19:22:35,907 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-24 19:22:35,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 19:22:35,907 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 19:22:35,907 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-24 19:22:35,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 19:22:35,907 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-24 19:22:35,908 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-24 19:22:35,908 INFO L138 SettingsManager]: * Random seed used by POR DFS order=521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 19:22:36,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 19:22:36,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 19:22:36,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 19:22:36,150 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 19:22:36,150 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 19:22:36,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth08-incorrect.bpl [2021-06-24 19:22:36,152 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth08-incorrect.bpl' [2021-06-24 19:22:36,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 19:22:36,171 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 19:22:36,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 19:22:36,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 19:22:36,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 19:22:36,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth08-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:36" (1/1) ... [2021-06-24 19:22:36,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth08-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:36" (1/1) ... [2021-06-24 19:22:36,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 19:22:36,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 19:22:36,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 19:22:36,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 19:22:36,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth08-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:36" (1/1) ... [2021-06-24 19:22:36,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth08-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:36" (1/1) ... [2021-06-24 19:22:36,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth08-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:36" (1/1) ... [2021-06-24 19:22:36,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth08-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:36" (1/1) ... [2021-06-24 19:22:36,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth08-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:36" (1/1) ... [2021-06-24 19:22:36,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth08-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:36" (1/1) ... [2021-06-24 19:22:36,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth08-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:36" (1/1) ... [2021-06-24 19:22:36,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 19:22:36,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 19:22:36,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 19:22:36,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 19:22:36,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth08-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:36" (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 19:22:36,273 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 19:22:36,274 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 19:22:36,274 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 19:22:36,274 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 19:22:36,274 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 19:22:36,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 19:22:36,274 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 19:22:36,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 19:22:36,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 19:22:36,275 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 19:22:36,492 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 19:22:36,492 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 19:22:36,494 INFO L202 PluginConnector]: Adding new model bluetooth08-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 07:22:36 BoogieIcfgContainer [2021-06-24 19:22:36,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 19:22:36,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 19:22:36,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 19:22:36,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 19:22:36,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth08-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:36" (1/2) ... [2021-06-24 19:22:36,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a897eb and model type bluetooth08-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 07:22:36, skipping insertion in model container [2021-06-24 19:22:36,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth08-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 07:22:36" (2/2) ... [2021-06-24 19:22:36,499 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth08-incorrect.bpl [2021-06-24 19:22:36,503 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 19:22:36,503 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 19:22:36,504 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 19:22:36,504 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 19:22:36,584 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 19:22:36,601 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 19:22:36,708 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 19:22:36,710 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 19:22:36,710 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 19:22:36,711 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 19:22:36,711 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 19:22:36,711 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 19:22:36,711 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 19:22:36,711 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork8======== [2021-06-24 19:22:36,925 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:22:36,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:22:36,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1387467272, now seen corresponding path program 1 times [2021-06-24 19:22:36,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:22:36,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658731060] [2021-06-24 19:22:36,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:22:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:22:37,019 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 19:22:37,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:22:37,020 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658731060] [2021-06-24 19:22:37,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658731060] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:22:37,020 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:22:37,020 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 19:22:37,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657966141] [2021-06-24 19:22:37,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 19:22:37,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:22:37,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 19:22:37,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 19:22:37,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:22:37,033 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:22:37,034 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 19:22:37,034 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:22:37,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:37,468 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 19:22:37,468 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:22:37,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:22:37,470 INFO L82 PathProgramCache]: Analyzing trace with hash -2145567484, now seen corresponding path program 1 times [2021-06-24 19:22:37,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:22:37,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998327653] [2021-06-24 19:22:37,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:22:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:22:37,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-24 19:22:37,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:22:37,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998327653] [2021-06-24 19:22:37,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998327653] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:22:37,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:22:37,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 19:22:37,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147457755] [2021-06-24 19:22:37,534 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 19:22:37,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:22:37,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 19:22:37,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 19:22:37,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:22:37,536 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:22:37,536 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 19:22:37,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:37,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:22:37,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:37,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:37,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 19:22:37,841 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:22:37,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:22:37,842 INFO L82 PathProgramCache]: Analyzing trace with hash 408242561, now seen corresponding path program 1 times [2021-06-24 19:22:37,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:22:37,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621460116] [2021-06-24 19:22:37,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:22:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:22:37,999 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-24 19:22:37,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:22:37,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621460116] [2021-06-24 19:22:38,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621460116] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:22:38,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772056980] [2021-06-24 19:22:38,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 19:22:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:22:38,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-24 19:22:38,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 19:22:38,288 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-24 19:22:38,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772056980] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:22:38,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 19:22:38,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 10 [2021-06-24 19:22:38,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763661062] [2021-06-24 19:22:38,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-24 19:22:38,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:22:38,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-24 19:22:38,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-06-24 19:22:38,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:22:38,290 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:22:38,290 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 10 states have internal predecessors, (85), 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 19:22:38,290 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:38,290 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:38,290 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:22:38,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:38,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:38,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 19:22:38,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 19:22:38,798 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:22:38,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:22:38,798 INFO L82 PathProgramCache]: Analyzing trace with hash 10892791, now seen corresponding path program 2 times [2021-06-24 19:22:38,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:22:38,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851982356] [2021-06-24 19:22:38,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:22:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 19:22:38,809 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 19:22:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 19:22:38,823 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 19:22:38,860 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-24 19:22:38,861 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-06-24 19:22:38,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-24 19:22:38,867 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork8 was UNSAFE (1/9) [2021-06-24 19:22:38,869 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 19:22:38,893 INFO L202 PluginConnector]: Adding new model bluetooth08-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 07:22:38 BasicIcfg [2021-06-24 19:22:38,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 19:22:38,894 INFO L168 Benchmark]: Toolchain (without parser) took 2723.79 ms. Allocated memory was 190.8 MB in the beginning and 265.3 MB in the end (delta: 74.4 MB). Free memory was 172.4 MB in the beginning and 224.4 MB in the end (delta: -52.0 MB). Peak memory consumption was 96.9 MB. Max. memory is 8.0 GB. [2021-06-24 19:22:38,895 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.61 ms. Allocated memory is still 190.8 MB. Free memory is still 173.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 19:22:38,896 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.11 ms. Allocated memory is still 190.8 MB. Free memory was 172.3 MB in the beginning and 170.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 19:22:38,896 INFO L168 Benchmark]: Boogie Preprocessor took 10.07 ms. Allocated memory is still 190.8 MB. Free memory was 170.5 MB in the beginning and 169.7 MB in the end (delta: 798.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 19:22:38,897 INFO L168 Benchmark]: RCFGBuilder took 283.10 ms. Allocated memory is still 190.8 MB. Free memory was 169.6 MB in the beginning and 157.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-24 19:22:38,897 INFO L168 Benchmark]: TraceAbstraction took 2398.63 ms. Allocated memory was 190.8 MB in the beginning and 265.3 MB in the end (delta: 74.4 MB). Free memory was 156.5 MB in the beginning and 224.4 MB in the end (delta: -67.9 MB). Peak memory consumption was 80.1 MB. Max. memory is 8.0 GB. [2021-06-24 19:22:38,897 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 0.61 ms. Allocated memory is still 190.8 MB. Free memory is still 173.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 28.11 ms. Allocated memory is still 190.8 MB. Free memory was 172.3 MB in the beginning and 170.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 10.07 ms. Allocated memory is still 190.8 MB. Free memory was 170.5 MB in the beginning and 169.7 MB in the end (delta: 798.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 283.10 ms. Allocated memory is still 190.8 MB. Free memory was 169.6 MB in the beginning and 157.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2398.63 ms. Allocated memory was 190.8 MB in the beginning and 265.3 MB in the end (delta: 74.4 MB). Free memory was 156.5 MB in the beginning and 224.4 MB in the end (delta: -67.9 MB). Peak memory consumption was 80.1 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: 113285, positive: 109260, positive conditional: 109260, positive unconditional: 0, negative: 4025, negative conditional: 4025, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 109415, positive: 109260, positive conditional: 109260, positive unconditional: 0, negative: 155, negative conditional: 155, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 109415, positive: 109245, positive conditional: 0, positive unconditional: 109245, negative: 170, negative conditional: 0, negative unconditional: 170, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 841, positive: 814, positive conditional: 0, positive unconditional: 814, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 841, positive: 786, positive conditional: 0, positive unconditional: 786, negative: 55, negative conditional: 0, negative unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 55, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 70, positive: 35, positive conditional: 7, positive unconditional: 28, negative: 35, negative conditional: 8, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 227, positive: 97, positive conditional: 11, positive unconditional: 86, negative: 130, negative conditional: 12, negative unconditional: 118, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 109415, positive: 108431, positive conditional: 0, positive unconditional: 108431, negative: 143, negative conditional: 0, negative unconditional: 143, unknown: 841, unknown conditional: 0, unknown unconditional: 841] , Statistics on independence cache: Total cache size (in pairs): 856, Positive cache size: 821, Positive conditional cache size: 7, Positive unconditional cache size: 814, Negative cache size: 35, Negative conditional cache size: 8, Negative unconditional cache size: 27, SemanticConditionEliminator.Independence Queries: [ total: 335, positive: 15, positive conditional: 15, positive unconditional: 0, negative: 320, negative conditional: 56, negative unconditional: 264, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 335, positive: 15, positive conditional: 15, positive unconditional: 0, negative: 320, negative conditional: 56, negative unconditional: 264, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 70, positive: 35, positive conditional: 7, positive unconditional: 28, negative: 35, negative conditional: 8, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 227, positive: 97, positive conditional: 11, positive unconditional: 86, negative: 130, negative conditional: 12, negative unconditional: 118, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 335, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 312, negative conditional: 48, negative unconditional: 264, unknown: 15, unknown conditional: 15, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 856, Positive cache size: 821, Positive conditional cache size: 7, Positive unconditional cache size: 814, Negative cache size: 35, Negative conditional cache size: 8, Negative unconditional cache size: 27, Eliminated conditions: 264, SemanticConditionEliminator.Independence Queries: [ total: 335, positive: 15, positive conditional: 15, positive unconditional: 0, negative: 320, negative conditional: 56, negative unconditional: 264, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 335, positive: 15, positive conditional: 15, positive unconditional: 0, negative: 320, negative conditional: 56, negative unconditional: 264, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 70, positive: 35, positive conditional: 7, positive unconditional: 28, negative: 35, negative conditional: 8, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 227, positive: 97, positive conditional: 11, positive unconditional: 86, negative: 130, negative conditional: 12, negative unconditional: 118, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 335, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 312, negative conditional: 48, negative unconditional: 264, unknown: 15, unknown conditional: 15, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 856, Positive cache size: 821, Positive conditional cache size: 7, Positive unconditional cache size: 814, Negative cache size: 35, Negative conditional cache size: 8, Negative unconditional cache size: 27, Eliminated conditions: 264, SemanticConditionEliminator.Independence Queries: [ total: 335, positive: 15, positive conditional: 15, positive unconditional: 0, negative: 320, negative conditional: 56, negative unconditional: 264, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 335, positive: 15, positive conditional: 15, positive unconditional: 0, negative: 320, negative conditional: 56, negative unconditional: 264, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 70, positive: 35, positive conditional: 7, positive unconditional: 28, negative: 35, negative conditional: 8, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 227, positive: 97, positive conditional: 11, positive unconditional: 86, negative: 130, negative conditional: 12, negative unconditional: 118, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 335, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 312, negative conditional: 48, negative unconditional: 264, unknown: 15, unknown conditional: 15, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 856, Positive cache size: 821, Positive conditional cache size: 7, Positive unconditional cache size: 814, Negative cache size: 35, Negative conditional cache size: 8, Negative unconditional cache size: 27, Eliminated conditions: 264 ], Maximal queried relation: 3, Independence queries for same thread: 3870 - CounterExampleResult [Line: 39]: 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] [L49] 5 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L50] 5 pendingIo := pendingIo + 1; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L39] 5 assert !stopped; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L58] 5 pendingIo := pendingIo - 1; [L59] COND FALSE 5 !(pendingIo == 0) VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L23] FORK 0 fork 5 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L49] 6 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L50] 6 pendingIo := pendingIo + 1; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L24] FORK 0 fork 6 DeviceThread(); VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L25] FORK 0 fork 7 DeviceThread(); VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L49] 8 assume !stoppingFlag; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L50] 8 pendingIo := pendingIo + 1; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L39] 6 assert !stopped; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L58] 6 pendingIo := pendingIo - 1; [L59] COND FALSE 6 !(pendingIo == 0) VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L49] 6 assume !stoppingFlag; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L26] FORK 0 fork 8 DeviceThread(); VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L39] 8 assert !stopped; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L58] 8 pendingIo := pendingIo - 1; [L59] COND FALSE 8 !(pendingIo == 0) VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L49] 9 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L49] 8 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L50] 8 pendingIo := pendingIo + 1; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L71] 1 stoppingFlag := true; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=true] [L81] 1 pendingIo := pendingIo - 1; [L82] COND FALSE 1 !(pendingIo == 0) VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L39] 8 assert !stopped; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L58] 8 pendingIo := pendingIo - 1; [L59] COND TRUE 8 pendingIo == 0 [L60] 8 stoppingEvent := true; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L50] 9 pendingIo := pendingIo + 1; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L50] 6 pendingIo := pendingIo + 1; VAL [pendingIo=2, stopped=false, stoppingEvent=true, stoppingFlag=true] [L39] 6 assert !stopped; VAL [pendingIo=2, stopped=false, stoppingEvent=true, stoppingFlag=true] [L73] 1 assume stoppingEvent; VAL [pendingIo=2, stopped=false, stoppingEvent=true, stoppingFlag=true] [L58] 6 pendingIo := pendingIo - 1; [L59] COND FALSE 6 !(pendingIo == 0) VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L74] 1 stopped := true; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] [L39] 9 assert !stopped; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: DeviceThreadThread1of1ForFork8 with 1 thread instances CFG has 12 procedures, 90 locations, 18 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2242.9ms, OverallIterations: 4, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17.2ms, PartialOrderReductionTime: 1220.5ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.8ms SsaConstructionTime, 67.9ms SatisfiabilityAnalysisTime, 417.8ms InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 157 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 1 NumberOfNonLiveVariables, 78 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 18/27 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...