/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-Random42.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 19:12:53,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 19:12:53,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 19:12:53,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-24 19:12:53,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 19:12:53,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 19:12:53,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 19:12:53,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 19:12:53,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 19:12:53,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 19:12:53,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 19:12:53,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 19:12:53,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 19:12:53,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 19:12:53,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 19:12:53,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 19:12:53,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-24 19:12:53,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-24 19:12:53,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-24 19:12:53,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-24 19:12:53,416 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-Random42.epf [2021-06-24 19:12:53,439 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 19:12:53,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 19:12:53,439 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 19:12:53,439 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 19:12:53,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 19:12:53,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 19:12:53,440 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 19:12:53,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 19:12:53,441 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 19:12:53,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 19:12:53,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 19:12:53,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 19:12:53,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 19:12:53,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 19:12:53,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 19:12:53,441 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 19:12:53,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 19:12:53,442 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 19:12:53,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 19:12:53,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 19:12:53,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 19:12:53,442 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 19:12:53,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 19:12:53,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 19:12:53,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 19:12:53,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 19:12:53,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 19:12:53,443 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 19:12:53,443 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-24 19:12:53,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 19:12:53,443 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 19:12:53,443 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-24 19:12:53,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 19:12:53,443 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-24 19:12:53,443 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-24 19:12:53,443 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 19:12:53,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 19:12:53,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 19:12:53,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 19:12:53,728 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 19:12:53,731 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 19:12:53,732 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth08-incorrect.bpl [2021-06-24 19:12:53,732 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth08-incorrect.bpl' [2021-06-24 19:12:53,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 19:12:53,754 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 19:12:53,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 19:12:53,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 19:12:53,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 19:12:53,768 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 07:12:53" (1/1) ... [2021-06-24 19:12:53,774 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 07:12:53" (1/1) ... [2021-06-24 19:12:53,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 19:12:53,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 19:12:53,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 19:12:53,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 19:12:53,791 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 07:12:53" (1/1) ... [2021-06-24 19:12:53,791 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 07:12:53" (1/1) ... [2021-06-24 19:12:53,791 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 07:12:53" (1/1) ... [2021-06-24 19:12:53,791 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 07:12:53" (1/1) ... [2021-06-24 19:12:53,792 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 07:12:53" (1/1) ... [2021-06-24 19:12:53,794 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 07:12:53" (1/1) ... [2021-06-24 19:12:53,794 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 07:12:53" (1/1) ... [2021-06-24 19:12:53,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 19:12:53,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 19:12:53,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 19:12:53,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 19:12:53,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth08-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:12:53" (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 19:12:53,850 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 19:12:53,850 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 19:12:53,851 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 19:12:53,851 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 19:12:53,851 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 19:12:53,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 19:12:53,851 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 19:12:53,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 19:12:53,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 19:12:53,852 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 19:12:54,073 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 19:12:54,073 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 19:12:54,074 INFO L202 PluginConnector]: Adding new model bluetooth08-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 07:12:54 BoogieIcfgContainer [2021-06-24 19:12:54,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 19:12:54,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 19:12:54,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 19:12:54,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 19:12:54,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth08-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:12:53" (1/2) ... [2021-06-24 19:12:54,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f77cb63 and model type bluetooth08-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 07:12:54, skipping insertion in model container [2021-06-24 19:12:54,079 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 07:12:54" (2/2) ... [2021-06-24 19:12:54,080 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth08-incorrect.bpl [2021-06-24 19:12:54,084 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 19:12:54,084 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 19:12:54,084 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 19:12:54,084 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 19:12:54,130 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 19:12:54,146 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 19:12:54,180 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 19:12:54,180 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 19:12:54,180 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 19:12:54,180 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 19:12:54,180 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 19:12:54,181 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 19:12:54,181 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 19:12:54,181 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork8======== [2021-06-24 19:12:54,226 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:12:54,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:12:54,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1370944606, now seen corresponding path program 1 times [2021-06-24 19:12:54,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:12:54,236 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245731349] [2021-06-24 19:12:54,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:12:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:12:54,357 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 19:12:54,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:12:54,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245731349] [2021-06-24 19:12:54,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245731349] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:12:54,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:12:54,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 19:12:54,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238726199] [2021-06-24 19:12:54,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 19:12:54,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:12:54,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 19:12:54,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 19:12:54,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:12:54,378 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:12:54,383 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 19:12:54,383 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:12:55,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:12:55,278 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 19:12:55,278 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:12:55,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:12:55,279 INFO L82 PathProgramCache]: Analyzing trace with hash 123426874, now seen corresponding path program 1 times [2021-06-24 19:12:55,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:12:55,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054675578] [2021-06-24 19:12:55,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:12:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:12:55,295 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 19:12:55,296 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:12:55,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054675578] [2021-06-24 19:12:55,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054675578] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:12:55,296 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:12:55,296 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 19:12:55,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616593991] [2021-06-24 19:12:55,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 19:12:55,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:12:55,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 19:12:55,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 19:12:55,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:12:55,301 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:12:55,301 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 19:12:55,301 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:12:55,304 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:12:56,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:12:56,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:12:56,007 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 19:12:56,007 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:12:56,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:12:56,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1362981386, now seen corresponding path program 1 times [2021-06-24 19:12:56,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:12:56,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335884028] [2021-06-24 19:12:56,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:12:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:12:56,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-24 19:12:56,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:12:56,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335884028] [2021-06-24 19:12:56,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335884028] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:12:56,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141473632] [2021-06-24 19:12:56,135 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 19:12:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:12:56,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-24 19:12:56,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 19:12:56,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-24 19:12:56,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141473632] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:12:56,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 19:12:56,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-06-24 19:12:56,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41869945] [2021-06-24 19:12:56,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-24 19:12:56,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:12:56,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-24 19:12:56,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-06-24 19:12:56,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:12:56,381 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:12:56,381 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 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 19:12:56,381 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:12:56,381 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:12:56,381 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:12:56,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:12:56,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:12:56,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-24 19:12:56,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 19:12:56,993 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:12:56,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:12:56,993 INFO L82 PathProgramCache]: Analyzing trace with hash -46517096, now seen corresponding path program 2 times [2021-06-24 19:12:56,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:12:56,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517966605] [2021-06-24 19:12:56,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:12:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 19:12:57,001 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 19:12:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 19:12:57,010 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 19:12:57,064 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-24 19:12:57,064 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-06-24 19:12:57,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-24 19:12:57,067 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork8 was UNSAFE (1/9) [2021-06-24 19:12:57,069 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 19:12:57,101 INFO L202 PluginConnector]: Adding new model bluetooth08-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 07:12:57 BasicIcfg [2021-06-24 19:12:57,101 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 19:12:57,102 INFO L168 Benchmark]: Toolchain (without parser) took 3347.67 ms. Allocated memory was 203.4 MB in the beginning and 596.6 MB in the end (delta: 393.2 MB). Free memory was 183.9 MB in the beginning and 527.6 MB in the end (delta: -343.7 MB). Peak memory consumption was 63.8 MB. Max. memory is 8.0 GB. [2021-06-24 19:12:57,102 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 203.4 MB. Free memory is still 185.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 19:12:57,102 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.71 ms. Allocated memory is still 203.4 MB. Free memory was 183.9 MB in the beginning and 182.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-24 19:12:57,102 INFO L168 Benchmark]: Boogie Preprocessor took 9.89 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 181.2 MB in the end (delta: 907.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 19:12:57,102 INFO L168 Benchmark]: RCFGBuilder took 278.94 ms. Allocated memory is still 203.4 MB. Free memory was 181.1 MB in the beginning and 168.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-24 19:12:57,102 INFO L168 Benchmark]: TraceAbstraction took 3025.40 ms. Allocated memory was 203.4 MB in the beginning and 596.6 MB in the end (delta: 393.2 MB). Free memory was 167.8 MB in the beginning and 527.6 MB in the end (delta: -359.8 MB). Peak memory consumption was 48.0 MB. Max. memory is 8.0 GB. [2021-06-24 19:12:57,103 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 0.13 ms. Allocated memory is still 203.4 MB. Free memory is still 185.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 29.71 ms. Allocated memory is still 203.4 MB. Free memory was 183.9 MB in the beginning and 182.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 9.89 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 181.2 MB in the end (delta: 907.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 278.94 ms. Allocated memory is still 203.4 MB. Free memory was 181.1 MB in the beginning and 168.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3025.40 ms. Allocated memory was 203.4 MB in the beginning and 596.6 MB in the end (delta: 393.2 MB). Free memory was 167.8 MB in the beginning and 527.6 MB in the end (delta: -359.8 MB). Peak memory consumption was 48.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 216004, positive: 204572, positive conditional: 204572, positive unconditional: 0, negative: 11432, negative conditional: 11432, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 204826, positive: 204572, positive conditional: 204572, positive unconditional: 0, negative: 254, negative conditional: 254, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 204826, positive: 204534, positive conditional: 0, positive unconditional: 204534, negative: 292, negative conditional: 0, negative unconditional: 292, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 682, positive: 664, positive conditional: 0, positive unconditional: 664, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 682, positive: 650, positive conditional: 0, positive unconditional: 650, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 32, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 47, positive: 18, positive conditional: 4, positive unconditional: 14, negative: 29, negative conditional: 11, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 129, positive: 56, positive conditional: 5, positive unconditional: 51, negative: 73, negative conditional: 17, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 204826, positive: 203870, positive conditional: 0, positive unconditional: 203870, negative: 274, negative conditional: 0, negative unconditional: 274, unknown: 682, unknown conditional: 0, unknown unconditional: 682] , Statistics on independence cache: Total cache size (in pairs): 697, Positive cache size: 668, Positive conditional cache size: 4, Positive unconditional cache size: 664, Negative cache size: 29, Negative conditional cache size: 11, Negative unconditional cache size: 18, SemanticConditionEliminator.Independence Queries: [ total: 717, positive: 38, positive conditional: 38, positive unconditional: 0, negative: 679, negative conditional: 101, negative unconditional: 578, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 717, positive: 38, positive conditional: 38, positive unconditional: 0, negative: 679, negative conditional: 101, negative unconditional: 578, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 47, positive: 18, positive conditional: 4, positive unconditional: 14, negative: 29, negative conditional: 11, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 129, positive: 56, positive conditional: 5, positive unconditional: 51, negative: 73, negative conditional: 17, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 717, positive: 34, positive conditional: 34, positive unconditional: 0, negative: 668, negative conditional: 90, negative unconditional: 578, unknown: 15, unknown conditional: 15, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 697, Positive cache size: 668, Positive conditional cache size: 4, Positive unconditional cache size: 664, Negative cache size: 29, Negative conditional cache size: 11, Negative unconditional cache size: 18, Eliminated conditions: 578, SemanticConditionEliminator.Independence Queries: [ total: 717, positive: 38, positive conditional: 38, positive unconditional: 0, negative: 679, negative conditional: 101, negative unconditional: 578, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 717, positive: 38, positive conditional: 38, positive unconditional: 0, negative: 679, negative conditional: 101, negative unconditional: 578, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 47, positive: 18, positive conditional: 4, positive unconditional: 14, negative: 29, negative conditional: 11, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 129, positive: 56, positive conditional: 5, positive unconditional: 51, negative: 73, negative conditional: 17, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 717, positive: 34, positive conditional: 34, positive unconditional: 0, negative: 668, negative conditional: 90, negative unconditional: 578, unknown: 15, unknown conditional: 15, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 697, Positive cache size: 668, Positive conditional cache size: 4, Positive unconditional cache size: 664, Negative cache size: 29, Negative conditional cache size: 11, Negative unconditional cache size: 18, Eliminated conditions: 578, SemanticConditionEliminator.Independence Queries: [ total: 717, positive: 38, positive conditional: 38, positive unconditional: 0, negative: 679, negative conditional: 101, negative unconditional: 578, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 717, positive: 38, positive conditional: 38, positive unconditional: 0, negative: 679, negative conditional: 101, negative unconditional: 578, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 47, positive: 18, positive conditional: 4, positive unconditional: 14, negative: 29, negative conditional: 11, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 129, positive: 56, positive conditional: 5, positive unconditional: 51, negative: 73, negative conditional: 17, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 717, positive: 34, positive conditional: 34, positive unconditional: 0, negative: 668, negative conditional: 90, negative unconditional: 578, unknown: 15, unknown conditional: 15, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 697, Positive cache size: 668, Positive conditional cache size: 4, Positive unconditional cache size: 664, Negative cache size: 29, Negative conditional cache size: 11, Negative unconditional cache size: 18, Eliminated conditions: 578 ], Maximal queried relation: 3, Independence queries for same thread: 11178 - 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] [L49] 2 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L20] FORK 0 fork 2 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L50] 2 pendingIo := pendingIo + 1; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L39] 2 assert !stopped; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L21] FORK 0 fork 3 DeviceThread(); VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L22] FORK 0 fork 4 DeviceThread(); VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L49] 5 assume !stoppingFlag; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L58] 2 pendingIo := pendingIo - 1; [L59] 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] [L24] FORK 0 fork 6 DeviceThread(); 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] [L25] FORK 0 fork 7 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L26] FORK 0 fork 8 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L49] 9 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L71] 1 stoppingFlag := true; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L81] 1 pendingIo := pendingIo - 1; [L82] COND TRUE 1 pendingIo == 0 [L83] 1 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] [L73] 1 assume stoppingEvent; 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: 2909.8ms, OverallIterations: 4, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.7ms, PartialOrderReductionTime: 2018.9ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 13, 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: 15.0ms SsaConstructionTime, 46.8ms SatisfiabilityAnalysisTime, 381.4ms InterpolantComputationTime, 165 NumberOfCodeBlocks, 165 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 444 SizeOfPredicates, 1 NumberOfNonLiveVariables, 57 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/4 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...