/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe-Random521.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth04-incorrect.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 19:22:32,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 19:22:32,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 19:22:32,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-24 19:22:32,368 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe-Random521.epf [2021-06-24 19:22:32,388 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 19:22:32,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 19:22:32,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 19:22:32,388 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 19:22:32,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 19:22:32,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 19:22:32,389 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 19:22:32,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 19:22:32,390 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 19:22:32,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 19:22:32,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 19:22:32,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 19:22:32,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 19:22:32,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 19:22:32,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 19:22:32,390 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 19:22:32,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 19:22:32,391 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 19:22:32,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 19:22:32,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 19:22:32,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 19:22:32,391 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 19:22:32,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 19:22:32,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 19:22:32,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 19:22:32,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 19:22:32,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 19:22:32,392 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 19:22:32,392 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-24 19:22:32,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 19:22:32,392 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 19:22:32,392 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-24 19:22:32,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 19:22:32,392 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-24 19:22:32,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-24 19:22:32,392 INFO L138 SettingsManager]: * Random seed used by POR DFS order=521 WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 19:22:32,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 19:22:32,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 19:22:32,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 19:22:32,638 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 19:22:32,640 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 19:22:32,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth04-incorrect.bpl [2021-06-24 19:22:32,641 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth04-incorrect.bpl' [2021-06-24 19:22:32,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 19:22:32,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 19:22:32,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 19:22:32,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 19:22:32,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 19:22:32,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:32" (1/1) ... [2021-06-24 19:22:32,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:32" (1/1) ... [2021-06-24 19:22:32,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 19:22:32,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 19:22:32,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 19:22:32,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 19:22:32,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:32" (1/1) ... [2021-06-24 19:22:32,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:32" (1/1) ... [2021-06-24 19:22:32,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:32" (1/1) ... [2021-06-24 19:22:32,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:32" (1/1) ... [2021-06-24 19:22:32,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:32" (1/1) ... [2021-06-24 19:22:32,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:32" (1/1) ... [2021-06-24 19:22:32,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:32" (1/1) ... [2021-06-24 19:22:32,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 19:22:32,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 19:22:32,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 19:22:32,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 19:22:32,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 19:22:32,774 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 19:22:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 19:22:32,774 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 19:22:32,774 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 19:22:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 19:22:32,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 19:22:32,774 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 19:22:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 19:22:32,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 19:22:32,775 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-24 19:22:32,926 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 19:22:32,926 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 19:22:32,928 INFO L202 PluginConnector]: Adding new model bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 07:22:32 BoogieIcfgContainer [2021-06-24 19:22:32,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 19:22:32,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 19:22:32,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 19:22:32,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 19:22:32,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:32" (1/2) ... [2021-06-24 19:22:32,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22103ac6 and model type bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 07:22:32, skipping insertion in model container [2021-06-24 19:22:32,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 07:22:32" (2/2) ... [2021-06-24 19:22:32,933 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth04-incorrect.bpl [2021-06-24 19:22:32,937 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 19:22:32,937 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 19:22:32,937 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 19:22:32,937 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 19:22:32,967 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 19:22:32,983 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-24 19:22:33,036 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 19:22:33,037 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 19:22:33,037 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 19:22:33,037 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 19:22:33,037 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 19:22:33,037 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 19:22:33,037 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 19:22:33,037 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-24 19:22:33,574 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/5) [2021-06-24 19:22:33,576 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-24 19:22:33,593 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 19:22:33,593 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 19:22:33,593 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 19:22:33,593 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 19:22:33,593 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 19:22:33,593 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 19:22:33,593 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 19:22:33,593 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork4======== [2021-06-24 19:22:33,636 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:22:33,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:22:33,639 INFO L82 PathProgramCache]: Analyzing trace with hash 559246636, now seen corresponding path program 1 times [2021-06-24 19:22:33,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:22:33,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769264532] [2021-06-24 19:22:33,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:22:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:22:33,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 19:22:33,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:22:33,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769264532] [2021-06-24 19:22:33,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769264532] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:22:33,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:22:33,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 19:22:33,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112508734] [2021-06-24 19:22:33,736 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 19:22:33,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:22:33,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 19:22:33,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 19:22:33,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:22:33,746 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:22:33,746 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 19:22:33,746 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:22:33,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:33,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 19:22:33,781 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:22:33,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:22:33,787 INFO L82 PathProgramCache]: Analyzing trace with hash -430920169, now seen corresponding path program 1 times [2021-06-24 19:22:33,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:22:33,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932906237] [2021-06-24 19:22:33,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:22:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:22:33,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-24 19:22:33,891 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:22:33,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932906237] [2021-06-24 19:22:33,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932906237] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:22:33,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:22:33,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-24 19:22:33,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249774250] [2021-06-24 19:22:33,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-24 19:22:33,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:22:33,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-24 19:22:33,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 19:22:33,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:22:33,893 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:22:33,893 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 19:22:33,893 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:33,893 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:22:34,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:34,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 19:22:34,034 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 19:22:34,034 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:22:34,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:22:34,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1594185257, now seen corresponding path program 1 times [2021-06-24 19:22:34,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:22:34,035 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045015213] [2021-06-24 19:22:34,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:22:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:22:34,071 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-24 19:22:34,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:22:34,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045015213] [2021-06-24 19:22:34,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045015213] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:22:34,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:22:34,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 19:22:34,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82887335] [2021-06-24 19:22:34,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 19:22:34,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:22:34,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 19:22:34,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 19:22:34,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:22:34,073 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:22:34,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 19:22:34,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:34,074 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 19:22:34,074 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:22:34,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:34,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 19:22:34,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:34,101 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 19:22:34,101 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:22:34,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:22:34,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1322497421, now seen corresponding path program 1 times [2021-06-24 19:22:34,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:22:34,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140107436] [2021-06-24 19:22:34,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:22:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:22:34,228 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 19:22:34,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:22:34,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140107436] [2021-06-24 19:22:34,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140107436] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:22:34,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816624761] [2021-06-24 19:22:34,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 19:22:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:22:34,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-24 19:22:34,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 19:22:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 19:22:34,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816624761] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:22:34,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 19:22:34,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-06-24 19:22:34,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271030511] [2021-06-24 19:22:34,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-24 19:22:34,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:22:34,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-24 19:22:34,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-06-24 19:22:34,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:22:34,651 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:22:34,651 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 19:22:34,652 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:34,652 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 19:22:34,652 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:34,652 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:22:34,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:34,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 19:22:34,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:34,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-24 19:22:34,945 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 19:22:34,946 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:22:34,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:22:34,946 INFO L82 PathProgramCache]: Analyzing trace with hash -2024834044, now seen corresponding path program 2 times [2021-06-24 19:22:34,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:22:34,946 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019917295] [2021-06-24 19:22:34,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:22:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 19:22:34,951 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 19:22:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 19:22:34,955 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 19:22:34,969 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-24 19:22:34,970 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-06-24 19:22:34,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-24 19:22:34,971 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork4 was UNSAFE (2/5) [2021-06-24 19:22:34,972 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 19:22:34,983 INFO L202 PluginConnector]: Adding new model bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 07:22:34 BasicIcfg [2021-06-24 19:22:34,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 19:22:34,983 INFO L168 Benchmark]: Toolchain (without parser) took 2305.64 ms. Allocated memory was 191.9 MB in the beginning and 250.6 MB in the end (delta: 58.7 MB). Free memory was 171.1 MB in the beginning and 176.7 MB in the end (delta: -5.7 MB). Peak memory consumption was 53.0 MB. Max. memory is 8.0 GB. [2021-06-24 19:22:34,984 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 191.9 MB. Free memory was 172.1 MB in the beginning and 172.0 MB in the end (delta: 91.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 19:22:34,984 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.56 ms. Allocated memory is still 191.9 MB. Free memory was 171.0 MB in the beginning and 169.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-24 19:22:34,984 INFO L168 Benchmark]: Boogie Preprocessor took 14.63 ms. Allocated memory is still 191.9 MB. Free memory was 169.1 MB in the beginning and 168.2 MB in the end (delta: 940.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 19:22:34,984 INFO L168 Benchmark]: RCFGBuilder took 204.75 ms. Allocated memory is still 191.9 MB. Free memory was 168.2 MB in the beginning and 155.9 MB in the end (delta: 12.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-06-24 19:22:34,984 INFO L168 Benchmark]: TraceAbstraction took 2054.05 ms. Allocated memory was 191.9 MB in the beginning and 250.6 MB in the end (delta: 58.7 MB). Free memory was 155.4 MB in the beginning and 176.7 MB in the end (delta: -21.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 8.0 GB. [2021-06-24 19:22:34,985 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 191.9 MB. Free memory was 172.1 MB in the beginning and 172.0 MB in the end (delta: 91.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 27.56 ms. Allocated memory is still 191.9 MB. Free memory was 171.0 MB in the beginning and 169.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.63 ms. Allocated memory is still 191.9 MB. Free memory was 169.1 MB in the beginning and 168.2 MB in the end (delta: 940.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 204.75 ms. Allocated memory is still 191.9 MB. Free memory was 168.2 MB in the beginning and 155.9 MB in the end (delta: 12.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2054.05 ms. Allocated memory was 191.9 MB in the beginning and 250.6 MB in the end (delta: 58.7 MB). Free memory was 155.4 MB in the beginning and 176.7 MB in the end (delta: -21.3 MB). Peak memory consumption was 37.3 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: 9685, positive: 7655, positive conditional: 7655, positive unconditional: 0, negative: 2030, negative conditional: 2030, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 8277, positive: 7655, positive conditional: 7655, positive unconditional: 0, negative: 622, negative conditional: 622, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 8277, positive: 7655, positive conditional: 0, positive unconditional: 7655, negative: 622, negative conditional: 0, negative unconditional: 622, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 413, positive: 385, positive conditional: 0, positive unconditional: 385, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 413, positive: 356, positive conditional: 0, positive unconditional: 356, negative: 57, negative conditional: 0, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 57, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 57, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 203, positive: 131, positive conditional: 0, positive unconditional: 131, negative: 72, negative conditional: 0, negative unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8277, positive: 7270, positive conditional: 0, positive unconditional: 7270, negative: 594, negative conditional: 0, negative unconditional: 594, unknown: 413, unknown conditional: 0, unknown unconditional: 413] , Statistics on independence cache: Total cache size (in pairs): 413, Positive cache size: 385, Positive conditional cache size: 0, Positive unconditional cache size: 385, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28 ], Maximal queried relation: 0, Independence queries for same thread: 1408 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 2035, positive: 1782, positive conditional: 1782, positive unconditional: 0, negative: 253, negative conditional: 253, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 1853, positive: 1782, positive conditional: 1782, positive unconditional: 0, negative: 71, negative conditional: 71, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 1853, positive: 1694, positive conditional: 0, positive unconditional: 1694, negative: 159, negative conditional: 0, negative unconditional: 159, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 274, positive: 257, positive conditional: 0, positive unconditional: 257, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 274, positive: 234, positive conditional: 0, positive unconditional: 234, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 40, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 63, positive: 37, positive conditional: 14, positive unconditional: 23, negative: 26, negative conditional: 9, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 125, positive: 92, positive conditional: 24, positive unconditional: 67, negative: 34, negative conditional: 13, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1853, positive: 1437, positive conditional: 0, positive unconditional: 1437, negative: 142, negative conditional: 0, negative unconditional: 142, unknown: 274, unknown conditional: 0, unknown unconditional: 274] , Statistics on independence cache: Total cache size (in pairs): 297, Positive cache size: 271, Positive conditional cache size: 14, Positive unconditional cache size: 257, Negative cache size: 26, Negative conditional cache size: 9, Negative unconditional cache size: 17, SemanticConditionEliminator.Independence Queries: [ total: 308, positive: 88, positive conditional: 88, positive unconditional: 0, negative: 220, negative conditional: 29, negative unconditional: 191, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 308, positive: 88, positive conditional: 88, positive unconditional: 0, negative: 220, negative conditional: 29, negative unconditional: 191, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 63, positive: 37, positive conditional: 14, positive unconditional: 23, negative: 26, negative conditional: 9, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 125, positive: 92, positive conditional: 24, positive unconditional: 67, negative: 34, negative conditional: 13, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 308, positive: 74, positive conditional: 74, positive unconditional: 0, negative: 211, negative conditional: 20, negative unconditional: 191, unknown: 23, unknown conditional: 23, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 297, Positive cache size: 271, Positive conditional cache size: 14, Positive unconditional cache size: 257, Negative cache size: 26, Negative conditional cache size: 9, Negative unconditional cache size: 17, Eliminated conditions: 191, SemanticConditionEliminator.Independence Queries: [ total: 308, positive: 88, positive conditional: 88, positive unconditional: 0, negative: 220, negative conditional: 29, negative unconditional: 191, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 308, positive: 88, positive conditional: 88, positive unconditional: 0, negative: 220, negative conditional: 29, negative unconditional: 191, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 63, positive: 37, positive conditional: 14, positive unconditional: 23, negative: 26, negative conditional: 9, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 125, positive: 92, positive conditional: 24, positive unconditional: 67, negative: 34, negative conditional: 13, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 308, positive: 74, positive conditional: 74, positive unconditional: 0, negative: 211, negative conditional: 20, negative unconditional: 191, unknown: 23, unknown conditional: 23, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 297, Positive cache size: 271, Positive conditional cache size: 14, Positive unconditional cache size: 257, Negative cache size: 26, Negative conditional cache size: 9, Negative unconditional cache size: 17, Eliminated conditions: 191, SemanticConditionEliminator.Independence Queries: [ total: 308, positive: 88, positive conditional: 88, positive unconditional: 0, negative: 220, negative conditional: 29, negative unconditional: 191, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 308, positive: 88, positive conditional: 88, positive unconditional: 0, negative: 220, negative conditional: 29, negative unconditional: 191, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 63, positive: 37, positive conditional: 14, positive unconditional: 23, negative: 26, negative conditional: 9, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 125, positive: 92, positive conditional: 24, positive unconditional: 67, negative: 34, negative conditional: 13, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 308, positive: 74, positive conditional: 74, positive unconditional: 0, negative: 211, negative conditional: 20, negative unconditional: 191, unknown: 23, unknown conditional: 23, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 297, Positive cache size: 271, Positive conditional cache size: 14, Positive unconditional cache size: 257, Negative cache size: 26, Negative conditional cache size: 9, Negative unconditional cache size: 17, Eliminated conditions: 191, SemanticConditionEliminator.Independence Queries: [ total: 308, positive: 88, positive conditional: 88, positive unconditional: 0, negative: 220, negative conditional: 29, negative unconditional: 191, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 308, positive: 88, positive conditional: 88, positive unconditional: 0, negative: 220, negative conditional: 29, negative unconditional: 191, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 63, positive: 37, positive conditional: 14, positive unconditional: 23, negative: 26, negative conditional: 9, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 125, positive: 92, positive conditional: 24, positive unconditional: 67, negative: 34, negative conditional: 13, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 308, positive: 74, positive conditional: 74, positive unconditional: 0, negative: 211, negative conditional: 20, negative unconditional: 191, unknown: 23, unknown conditional: 23, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 297, Positive cache size: 271, Positive conditional cache size: 14, Positive unconditional cache size: 257, Negative cache size: 26, Negative conditional cache size: 9, Negative unconditional cache size: 17, Eliminated conditions: 191 ], Maximal queried relation: 4, Independence queries for same thread: 182 - CounterExampleResult [Line: 35]: assertion can be violated assertion can be violated We found a FailurePath: [L13] 0 pendingIo := 1; VAL [pendingIo=1] [L14] 0 stopped := false; VAL [pendingIo=1, stopped=false] [L15] 0 stoppingEvent := false; VAL [pendingIo=1, stopped=false, stoppingEvent=false] [L16] 0 stoppingFlag := false; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L18] FORK 0 fork 0 ServerThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L19] FORK 0 fork 1 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L20] FORK 0 fork 2 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L45] 3 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L45] 2 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L46] 2 pendingIo := pendingIo + 1; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L35] 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] [L45] 5 assume !stoppingFlag; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L67] 1 stoppingFlag := true; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=true] [L77] 1 pendingIo := pendingIo - 1; [L78] COND FALSE 1 !(pendingIo == 0) VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L46] 3 pendingIo := pendingIo + 1; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=true] [L35] 3 assert !stopped; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=true] [L54] 3 pendingIo := pendingIo - 1; [L55] COND FALSE 3 !(pendingIo == 0) VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L54] 2 pendingIo := pendingIo - 1; [L55] COND TRUE 2 pendingIo == 0 [L56] 2 stoppingEvent := true; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L46] 5 pendingIo := pendingIo + 1; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L69] 1 assume stoppingEvent; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L70] 1 stopped := true; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] [L35] 5 assert !stopped; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 8 procedures, 58 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 574.1ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15.1ms, PartialOrderReductionTime: 505.8ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: DeviceThreadThread1of1ForFork4 with 1 thread instances CFG has 8 procedures, 58 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1387.6ms, OverallIterations: 5, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.0ms, PartialOrderReductionTime: 323.3ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 19, 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: 10.9ms SsaConstructionTime, 87.3ms SatisfiabilityAnalysisTime, 426.5ms InterpolantComputationTime, 188 NumberOfCodeBlocks, 188 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 155 ConstructedInterpolants, 0 QuantifiedInterpolants, 554 SizeOfPredicates, 1 NumberOfNonLiveVariables, 52 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 36/46 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...