/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe-Random42.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth06-incorrect.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 20:18:19,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 20:18:19,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 20:18:19,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-24 20:18:19,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 20:18:19,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 20:18:19,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 20:18:19,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 20:18:19,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 20:18:19,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 20:18:19,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 20:18:19,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 20:18:19,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 20:18:19,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 20:18:19,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 20:18:19,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 20:18:19,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-24 20:18:19,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-24 20:18:19,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-24 20:18:19,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-24 20:18:19,198 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe-Random42.epf [2021-06-24 20:18:19,226 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 20:18:19,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 20:18:19,227 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 20:18:19,227 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 20:18:19,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 20:18:19,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 20:18:19,230 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 20:18:19,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 20:18:19,230 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 20:18:19,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 20:18:19,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 20:18:19,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 20:18:19,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 20:18:19,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 20:18:19,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 20:18:19,231 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 20:18:19,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 20:18:19,232 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 20:18:19,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 20:18:19,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 20:18:19,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 20:18:19,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 20:18:19,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 20:18:19,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 20:18:19,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 20:18:19,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 20:18:19,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 20:18:19,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 20:18:19,233 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-24 20:18:19,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 20:18:19,233 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 20:18:19,233 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-24 20:18:19,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 20:18:19,234 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-24 20:18:19,234 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-24 20:18:19,234 INFO L138 SettingsManager]: * Random seed used by POR DFS order=42 WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 20:18:19,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 20:18:19,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 20:18:19,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 20:18:19,530 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 20:18:19,531 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 20:18:19,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth06-incorrect.bpl [2021-06-24 20:18:19,533 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth06-incorrect.bpl' [2021-06-24 20:18:19,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 20:18:19,563 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 20:18:19,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 20:18:19,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 20:18:19,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 20:18:19,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth06-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:18:19" (1/1) ... [2021-06-24 20:18:19,580 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth06-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:18:19" (1/1) ... [2021-06-24 20:18:19,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 20:18:19,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 20:18:19,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 20:18:19,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 20:18:19,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth06-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:18:19" (1/1) ... [2021-06-24 20:18:19,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth06-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:18:19" (1/1) ... [2021-06-24 20:18:19,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth06-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:18:19" (1/1) ... [2021-06-24 20:18:19,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth06-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:18:19" (1/1) ... [2021-06-24 20:18:19,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth06-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:18:19" (1/1) ... [2021-06-24 20:18:19,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth06-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:18:19" (1/1) ... [2021-06-24 20:18:19,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth06-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:18:19" (1/1) ... [2021-06-24 20:18:19,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 20:18:19,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 20:18:19,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 20:18:19,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 20:18:19,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth06-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:18:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 20:18:19,684 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 20:18:19,685 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 20:18:19,685 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 20:18:19,685 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 20:18:19,685 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 20:18:19,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 20:18:19,685 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 20:18:19,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 20:18:19,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 20:18:19,686 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-24 20:18:19,849 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 20:18:19,849 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 20:18:19,850 INFO L202 PluginConnector]: Adding new model bluetooth06-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:18:19 BoogieIcfgContainer [2021-06-24 20:18:19,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 20:18:19,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 20:18:19,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 20:18:19,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 20:18:19,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth06-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:18:19" (1/2) ... [2021-06-24 20:18:19,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b34b93b and model type bluetooth06-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:18:19, skipping insertion in model container [2021-06-24 20:18:19,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth06-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:18:19" (2/2) ... [2021-06-24 20:18:19,856 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth06-incorrect.bpl [2021-06-24 20:18:19,859 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 20:18:19,860 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 20:18:19,860 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 20:18:19,860 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 20:18:19,903 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 20:18:19,919 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 20:18:19,980 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 20:18:19,980 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 20:18:19,980 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 20:18:19,980 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 20:18:19,980 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 20:18:19,980 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 20:18:19,980 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 20:18:19,980 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork6======== [2021-06-24 20:18:20,176 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:18:20,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:18:20,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1746476073, now seen corresponding path program 1 times [2021-06-24 20:18:20,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:18:20,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121650003] [2021-06-24 20:18:20,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:18:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:18:20,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-24 20:18:20,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:18:20,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121650003] [2021-06-24 20:18:20,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121650003] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:18:20,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:18:20,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 20:18:20,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294866343] [2021-06-24 20:18:20,299 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:18:20,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:18:20,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:18:20,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:18:20,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:18:20,323 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:18:20,324 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 20:18:20,324 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:18:20,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:18:20,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 20:18:20,633 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:18:20,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:18:20,633 INFO L82 PathProgramCache]: Analyzing trace with hash 338979360, now seen corresponding path program 1 times [2021-06-24 20:18:20,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:18:20,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118972623] [2021-06-24 20:18:20,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:18:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:18:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:18:20,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:18:20,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118972623] [2021-06-24 20:18:20,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118972623] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:18:20,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:18:20,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 20:18:20,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526385401] [2021-06-24 20:18:20,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:18:20,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:18:20,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:18:20,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:18:20,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:18:20,660 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:18:20,660 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:18:20,660 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:18:20,661 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:18:21,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:18:21,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:18:21,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 20:18:21,092 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:18:21,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:18:21,093 INFO L82 PathProgramCache]: Analyzing trace with hash -548370569, now seen corresponding path program 1 times [2021-06-24 20:18:21,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:18:21,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568079427] [2021-06-24 20:18:21,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:18:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:18:21,288 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 26 proven. 13 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-06-24 20:18:21,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:18:21,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568079427] [2021-06-24 20:18:21,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568079427] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:18:21,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997836865] [2021-06-24 20:18:21,289 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 20:18:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:18:21,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-24 20:18:21,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:18:21,721 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 26 proven. 13 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-06-24 20:18:21,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997836865] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:18:21,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:18:21,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-06-24 20:18:21,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402943271] [2021-06-24 20:18:21,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-24 20:18:21,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:18:21,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-24 20:18:21,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=37, Unknown=0, NotChecked=0, Total=72 [2021-06-24 20:18:21,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:18:21,723 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:18:21,723 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:18:21,724 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:18:21,724 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:18:21,724 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:18:22,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:18:22,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:18:22,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-24 20:18:22,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:18:22,257 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:18:22,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:18:22,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1793220250, now seen corresponding path program 1 times [2021-06-24 20:18:22,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:18:22,258 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395274161] [2021-06-24 20:18:22,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:18:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 20:18:22,272 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 20:18:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 20:18:22,283 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 20:18:22,293 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-24 20:18:22,294 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-06-24 20:18:22,294 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-24 20:18:22,298 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork6 was UNSAFE (1/7) [2021-06-24 20:18:22,300 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 20:18:22,314 INFO L202 PluginConnector]: Adding new model bluetooth06-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:18:22 BasicIcfg [2021-06-24 20:18:22,314 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 20:18:22,315 INFO L168 Benchmark]: Toolchain (without parser) took 2751.93 ms. Allocated memory was 201.3 MB in the beginning and 302.0 MB in the end (delta: 100.7 MB). Free memory was 180.5 MB in the beginning and 151.7 MB in the end (delta: 28.9 MB). Peak memory consumption was 129.5 MB. Max. memory is 8.0 GB. [2021-06-24 20:18:22,315 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 201.3 MB. Free memory is still 181.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 20:18:22,315 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.63 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 178.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-24 20:18:22,315 INFO L168 Benchmark]: Boogie Preprocessor took 13.37 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 177.7 MB in the end (delta: 851.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 20:18:22,315 INFO L168 Benchmark]: RCFGBuilder took 244.20 ms. Allocated memory is still 201.3 MB. Free memory was 177.7 MB in the beginning and 165.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-24 20:18:22,315 INFO L168 Benchmark]: TraceAbstraction took 2462.26 ms. Allocated memory was 201.3 MB in the beginning and 302.0 MB in the end (delta: 100.7 MB). Free memory was 164.6 MB in the beginning and 151.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 113.8 MB. Max. memory is 8.0 GB. [2021-06-24 20:18:22,316 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 201.3 MB. Free memory is still 181.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 27.63 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 178.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.37 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 177.7 MB in the end (delta: 851.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 244.20 ms. Allocated memory is still 201.3 MB. Free memory was 177.7 MB in the beginning and 165.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2462.26 ms. Allocated memory was 201.3 MB in the beginning and 302.0 MB in the end (delta: 100.7 MB). Free memory was 164.6 MB in the beginning and 151.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 113.8 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: 46919, positive: 43388, positive conditional: 43388, positive unconditional: 0, negative: 3531, negative conditional: 3531, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 44027, positive: 43388, positive conditional: 43388, positive unconditional: 0, negative: 639, negative conditional: 639, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 44027, positive: 43292, positive conditional: 0, positive unconditional: 43292, negative: 735, negative conditional: 0, negative unconditional: 735, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 698, positive: 661, positive conditional: 0, positive unconditional: 661, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 698, positive: 624, positive conditional: 0, positive unconditional: 624, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 74, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 121, positive: 70, positive conditional: 33, positive unconditional: 37, negative: 51, negative conditional: 14, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 376, positive: 192, positive conditional: 52, positive unconditional: 140, negative: 185, negative conditional: 18, negative unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 44027, positive: 42631, positive conditional: 0, positive unconditional: 42631, negative: 698, negative conditional: 0, negative unconditional: 698, unknown: 698, unknown conditional: 0, unknown unconditional: 698] , Statistics on independence cache: Total cache size (in pairs): 745, Positive cache size: 694, Positive conditional cache size: 33, Positive unconditional cache size: 661, Negative cache size: 51, Negative conditional cache size: 14, Negative unconditional cache size: 37, SemanticConditionEliminator.Independence Queries: [ total: 1577, positive: 96, positive conditional: 96, positive unconditional: 0, negative: 1481, negative conditional: 169, negative unconditional: 1312, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1577, positive: 96, positive conditional: 96, positive unconditional: 0, negative: 1481, negative conditional: 169, negative unconditional: 1312, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 121, positive: 70, positive conditional: 33, positive unconditional: 37, negative: 51, negative conditional: 14, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 376, positive: 192, positive conditional: 52, positive unconditional: 140, negative: 185, negative conditional: 18, negative unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1577, positive: 63, positive conditional: 63, positive unconditional: 0, negative: 1467, negative conditional: 155, negative unconditional: 1312, unknown: 47, unknown conditional: 47, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 745, Positive cache size: 694, Positive conditional cache size: 33, Positive unconditional cache size: 661, Negative cache size: 51, Negative conditional cache size: 14, Negative unconditional cache size: 37, Eliminated conditions: 1312, SemanticConditionEliminator.Independence Queries: [ total: 1577, positive: 96, positive conditional: 96, positive unconditional: 0, negative: 1481, negative conditional: 169, negative unconditional: 1312, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1577, positive: 96, positive conditional: 96, positive unconditional: 0, negative: 1481, negative conditional: 169, negative unconditional: 1312, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 121, positive: 70, positive conditional: 33, positive unconditional: 37, negative: 51, negative conditional: 14, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 376, positive: 192, positive conditional: 52, positive unconditional: 140, negative: 185, negative conditional: 18, negative unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1577, positive: 63, positive conditional: 63, positive unconditional: 0, negative: 1467, negative conditional: 155, negative unconditional: 1312, unknown: 47, unknown conditional: 47, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 745, Positive cache size: 694, Positive conditional cache size: 33, Positive unconditional cache size: 661, Negative cache size: 51, Negative conditional cache size: 14, Negative unconditional cache size: 37, Eliminated conditions: 1312, SemanticConditionEliminator.Independence Queries: [ total: 1577, positive: 96, positive conditional: 96, positive unconditional: 0, negative: 1481, negative conditional: 169, negative unconditional: 1312, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1577, positive: 96, positive conditional: 96, positive unconditional: 0, negative: 1481, negative conditional: 169, negative unconditional: 1312, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 121, positive: 70, positive conditional: 33, positive unconditional: 37, negative: 51, negative conditional: 14, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 376, positive: 192, positive conditional: 52, positive unconditional: 140, negative: 185, negative conditional: 18, negative unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1577, positive: 63, positive conditional: 63, positive unconditional: 0, negative: 1467, negative conditional: 155, negative unconditional: 1312, unknown: 47, unknown conditional: 47, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 745, Positive cache size: 694, Positive conditional cache size: 33, Positive unconditional cache size: 661, Negative cache size: 51, Negative conditional cache size: 14, Negative unconditional cache size: 37, Eliminated conditions: 1312 ], Maximal queried relation: 3, Independence queries for same thread: 2892 - CounterExampleResult [Line: 37]: 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] [L47] 2 assume !stoppingFlag; 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] [L48] 2 pendingIo := pendingIo + 1; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L37] 2 assert !stopped; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L56] 2 pendingIo := pendingIo - 1; [L57] COND FALSE 2 !(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] [L47] 6 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L47] 5 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L48] 6 pendingIo := pendingIo + 1; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L37] 6 assert !stopped; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L48] 5 pendingIo := pendingIo + 1; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L47] 2 assume !stoppingFlag; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L48] 2 pendingIo := pendingIo + 1; VAL [pendingIo=4, stopped=false, stoppingEvent=false, stoppingFlag=false] [L37] 5 assert !stopped; VAL [pendingIo=4, stopped=false, stoppingEvent=false, stoppingFlag=false] [L37] 2 assert !stopped; VAL [pendingIo=4, stopped=false, stoppingEvent=false, stoppingFlag=false] [L56] 2 pendingIo := pendingIo - 1; [L57] COND FALSE 2 !(pendingIo == 0) VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L47] 2 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] [L47] 7 assume !stoppingFlag; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L48] 2 pendingIo := pendingIo + 1; VAL [pendingIo=4, stopped=false, stoppingEvent=false, stoppingFlag=false] [L48] 7 pendingIo := pendingIo + 1; VAL [pendingIo=5, stopped=false, stoppingEvent=false, stoppingFlag=false] [L37] 7 assert !stopped; VAL [pendingIo=5, stopped=false, stoppingEvent=false, stoppingFlag=false] [L37] 2 assert !stopped; VAL [pendingIo=5, stopped=false, stoppingEvent=false, stoppingFlag=false] [L56] 7 pendingIo := pendingIo - 1; [L57] COND FALSE 7 !(pendingIo == 0) VAL [pendingIo=4, stopped=false, stoppingEvent=false, stoppingFlag=false] [L56] 5 pendingIo := pendingIo - 1; [L57] COND FALSE 5 !(pendingIo == 0) VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L56] 2 pendingIo := pendingIo - 1; [L57] COND FALSE 2 !(pendingIo == 0) VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L47] 7 assume !stoppingFlag; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L47] 2 assume !stoppingFlag; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L48] 2 pendingIo := pendingIo + 1; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L48] 7 pendingIo := pendingIo + 1; VAL [pendingIo=4, stopped=false, stoppingEvent=false, stoppingFlag=false] [L37] 7 assert !stopped; VAL [pendingIo=4, stopped=false, stoppingEvent=false, stoppingFlag=false] [L37] 2 assert !stopped; VAL [pendingIo=4, stopped=false, stoppingEvent=false, stoppingFlag=false] [L56] 7 pendingIo := pendingIo - 1; [L57] COND FALSE 7 !(pendingIo == 0) VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L47] 7 assume !stoppingFlag; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L56] 6 pendingIo := pendingIo - 1; [L57] COND FALSE 6 !(pendingIo == 0) VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L47] 6 assume !stoppingFlag; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L69] 1 stoppingFlag := true; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=true] [L79] 1 pendingIo := pendingIo - 1; [L80] COND FALSE 1 !(pendingIo == 0) VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L48] 6 pendingIo := pendingIo + 1; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=true] [L56] 2 pendingIo := pendingIo - 1; [L57] COND FALSE 2 !(pendingIo == 0) VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L37] 6 assert !stopped; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L56] 6 pendingIo := pendingIo - 1; [L57] COND TRUE 6 pendingIo == 0 [L58] 6 stoppingEvent := true; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L48] 7 pendingIo := pendingIo + 1; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L71] 1 assume stoppingEvent; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L72] 1 stopped := true; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] [L37] 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 10 procedures, 74 locations, 14 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2342.2ms, OverallIterations: 4, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17.0ms, PartialOrderReductionTime: 1239.7ms, 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: 18.3ms SsaConstructionTime, 89.0ms SatisfiabilityAnalysisTime, 579.7ms InterpolantComputationTime, 241 NumberOfCodeBlocks, 241 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 177 ConstructedInterpolants, 0 QuantifiedInterpolants, 747 SizeOfPredicates, 1 NumberOfNonLiveVariables, 99 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 78/104 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...