/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-Random7777.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth07-incorrect.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 19:32:25,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 19:32:25,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 19:32:25,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-24 19:32:25,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-24 19:32:25,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-24 19:32:25,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-24 19:32:25,570 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-Random7777.epf [2021-06-24 19:32:25,615 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 19:32:25,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 19:32:25,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 19:32:25,616 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 19:32:25,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 19:32:25,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 19:32:25,618 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 19:32:25,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 19:32:25,619 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 19:32:25,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 19:32:25,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 19:32:25,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 19:32:25,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 19:32:25,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 19:32:25,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 19:32:25,620 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 19:32:25,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 19:32:25,620 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 19:32:25,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 19:32:25,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 19:32:25,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 19:32:25,621 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 19:32:25,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 19:32:25,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 19:32:25,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 19:32:25,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 19:32:25,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 19:32:25,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 19:32:25,622 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-24 19:32:25,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 19:32:25,622 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 19:32:25,622 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-24 19:32:25,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 19:32:25,622 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-24 19:32:25,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-24 19:32:25,623 INFO L138 SettingsManager]: * Random seed used by POR DFS order=7777 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 19:32:25,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 19:32:25,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 19:32:25,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 19:32:25,936 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 19:32:25,937 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 19:32:25,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth07-incorrect.bpl [2021-06-24 19:32:25,938 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth07-incorrect.bpl' [2021-06-24 19:32:25,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 19:32:25,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 19:32:25,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 19:32:25,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 19:32:25,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 19:32:25,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:32:25" (1/1) ... [2021-06-24 19:32:25,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:32:25" (1/1) ... [2021-06-24 19:32:25,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 19:32:25,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 19:32:25,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 19:32:25,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 19:32:25,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:32:25" (1/1) ... [2021-06-24 19:32:25,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:32:25" (1/1) ... [2021-06-24 19:32:25,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:32:25" (1/1) ... [2021-06-24 19:32:25,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:32:25" (1/1) ... [2021-06-24 19:32:25,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:32:25" (1/1) ... [2021-06-24 19:32:25,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:32:25" (1/1) ... [2021-06-24 19:32:25,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:32:25" (1/1) ... [2021-06-24 19:32:25,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 19:32:25,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 19:32:25,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 19:32:25,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 19:32:25,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:32:25" (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 19:32:26,082 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 19:32:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 19:32:26,082 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 19:32:26,082 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 19:32:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 19:32:26,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 19:32:26,083 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 19:32:26,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 19:32:26,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 19:32:26,084 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-24 19:32:26,309 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 19:32:26,309 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 19:32:26,310 INFO L202 PluginConnector]: Adding new model bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 07:32:26 BoogieIcfgContainer [2021-06-24 19:32:26,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 19:32:26,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 19:32:26,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 19:32:26,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 19:32:26,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:32:25" (1/2) ... [2021-06-24 19:32:26,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616c6677 and model type bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 07:32:26, skipping insertion in model container [2021-06-24 19:32:26,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 07:32:26" (2/2) ... [2021-06-24 19:32:26,316 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth07-incorrect.bpl [2021-06-24 19:32:26,320 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 19:32:26,320 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 19:32:26,320 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 19:32:26,321 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 19:32:26,400 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 19:32:26,416 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 19:32:26,494 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 19:32:26,494 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 19:32:26,495 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 19:32:26,496 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 19:32:26,496 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 19:32:26,496 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 19:32:26,496 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 19:32:26,496 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork6======== [2021-06-24 19:32:26,626 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:32:26,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:32:26,631 INFO L82 PathProgramCache]: Analyzing trace with hash 659620830, now seen corresponding path program 1 times [2021-06-24 19:32:26,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:32:26,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116971851] [2021-06-24 19:32:26,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:32:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:32:26,744 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 19:32:26,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:32:26,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116971851] [2021-06-24 19:32:26,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116971851] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:32:26,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:32:26,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 19:32:26,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799361897] [2021-06-24 19:32:26,751 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 19:32:26,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:32:26,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 19:32:26,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 19:32:26,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:32:26,774 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:32:26,776 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 19:32:26,776 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:32:27,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:32:27,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 19:32:27,071 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:32:27,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:32:27,073 INFO L82 PathProgramCache]: Analyzing trace with hash 671074450, now seen corresponding path program 1 times [2021-06-24 19:32:27,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:32:27,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836482307] [2021-06-24 19:32:27,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:32:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:32:27,102 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 19:32:27,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:32:27,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836482307] [2021-06-24 19:32:27,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836482307] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:32:27,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:32:27,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 19:32:27,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100995840] [2021-06-24 19:32:27,104 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 19:32:27,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:32:27,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 19:32:27,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 19:32:27,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:32:27,106 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:32:27,106 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 19:32:27,107 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:32:27,107 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:32:27,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:32:27,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:32:27,344 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 19:32:27,344 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:32:27,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:32:27,345 INFO L82 PathProgramCache]: Analyzing trace with hash 367318144, now seen corresponding path program 1 times [2021-06-24 19:32:27,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:32:27,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675702505] [2021-06-24 19:32:27,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:32:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:32:27,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-24 19:32:27,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:32:27,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675702505] [2021-06-24 19:32:27,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675702505] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:32:27,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215543160] [2021-06-24 19:32:27,504 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 19:32:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:32:27,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-24 19:32:27,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 19:32:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-24 19:32:27,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215543160] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:32:27,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 19:32:27,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-06-24 19:32:27,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502740395] [2021-06-24 19:32:27,831 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-24 19:32:27,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:32:27,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-24 19:32:27,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-06-24 19:32:27,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:32:27,832 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:32:27,832 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 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 19:32:27,833 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:32:27,833 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:32:27,833 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:32:28,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:32:28,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:32:28,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-24 19:32:29,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 19:32:29,037 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:32:29,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:32:29,037 INFO L82 PathProgramCache]: Analyzing trace with hash -2016964702, now seen corresponding path program 1 times [2021-06-24 19:32:29,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:32:29,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173197345] [2021-06-24 19:32:29,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:32:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:32:29,217 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 17 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-06-24 19:32:29,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:32:29,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173197345] [2021-06-24 19:32:29,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173197345] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:32:29,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859500169] [2021-06-24 19:32:29,218 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 19:32:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:32:29,331 WARN L261 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 64 conjunts are in the unsatisfiable core [2021-06-24 19:32:29,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 19:32:29,543 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 37 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-06-24 19:32:29,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859500169] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:32:29,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 19:32:29,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-06-24 19:32:29,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598380619] [2021-06-24 19:32:29,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-24 19:32:29,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:32:29,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-24 19:32:29,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-06-24 19:32:29,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:32:29,548 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:32:29,548 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 16 states have internal predecessors, (110), 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 19:32:29,548 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:32:29,552 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:32:29,552 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-24 19:32:29,552 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:32:32,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:32:32,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:32:32,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-24 19:32:32,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 19:32:32,387 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 19:32:32,388 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:32:32,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:32:32,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1696944486, now seen corresponding path program 1 times [2021-06-24 19:32:32,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:32:32,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349061089] [2021-06-24 19:32:32,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:32:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 19:32:32,394 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 19:32:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 19:32:32,399 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 19:32:32,422 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-24 19:32:32,422 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-06-24 19:32:32,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-24 19:32:32,426 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork6 was UNSAFE (1/8) [2021-06-24 19:32:32,428 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 19:32:32,439 INFO L202 PluginConnector]: Adding new model bluetooth07-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 07:32:32 BasicIcfg [2021-06-24 19:32:32,440 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 19:32:32,440 INFO L168 Benchmark]: Toolchain (without parser) took 6484.98 ms. Allocated memory was 187.7 MB in the beginning and 498.1 MB in the end (delta: 310.4 MB). Free memory was 167.9 MB in the beginning and 188.0 MB in the end (delta: -20.2 MB). Peak memory consumption was 288.7 MB. Max. memory is 8.0 GB. [2021-06-24 19:32:32,440 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 187.7 MB. Free memory is still 168.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 19:32:32,440 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.69 ms. Allocated memory is still 187.7 MB. Free memory was 167.8 MB in the beginning and 166.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-24 19:32:32,440 INFO L168 Benchmark]: Boogie Preprocessor took 11.54 ms. Allocated memory is still 187.7 MB. Free memory was 166.0 MB in the beginning and 165.1 MB in the end (delta: 848.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 19:32:32,441 INFO L168 Benchmark]: RCFGBuilder took 313.58 ms. Allocated memory is still 187.7 MB. Free memory was 165.0 MB in the beginning and 152.2 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-24 19:32:32,441 INFO L168 Benchmark]: TraceAbstraction took 6127.99 ms. Allocated memory was 187.7 MB in the beginning and 498.1 MB in the end (delta: 310.4 MB). Free memory was 151.8 MB in the beginning and 188.0 MB in the end (delta: -36.2 MB). Peak memory consumption was 272.9 MB. Max. memory is 8.0 GB. [2021-06-24 19:32:32,441 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 187.7 MB. Free memory is still 168.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 27.69 ms. Allocated memory is still 187.7 MB. Free memory was 167.8 MB in the beginning and 166.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 11.54 ms. Allocated memory is still 187.7 MB. Free memory was 166.0 MB in the beginning and 165.1 MB in the end (delta: 848.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 313.58 ms. Allocated memory is still 187.7 MB. Free memory was 165.0 MB in the beginning and 152.2 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6127.99 ms. Allocated memory was 187.7 MB in the beginning and 498.1 MB in the end (delta: 310.4 MB). Free memory was 151.8 MB in the beginning and 188.0 MB in the end (delta: -36.2 MB). Peak memory consumption was 272.9 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: 347877, positive: 324644, positive conditional: 324644, positive unconditional: 0, negative: 23233, negative conditional: 23233, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 327115, positive: 324644, positive conditional: 324644, positive unconditional: 0, negative: 2471, negative conditional: 2471, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 327115, positive: 311851, positive conditional: 0, positive unconditional: 311851, negative: 15264, negative conditional: 0, negative unconditional: 15264, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1062, positive: 1009, positive conditional: 0, positive unconditional: 1009, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1062, positive: 953, positive conditional: 0, positive unconditional: 953, negative: 109, negative conditional: 0, negative unconditional: 109, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 109, positive: 56, positive conditional: 0, positive unconditional: 56, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 263, positive: 174, positive conditional: 118, positive unconditional: 56, negative: 89, negative conditional: 36, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 436, positive: 272, positive conditional: 142, positive unconditional: 131, negative: 164, negative conditional: 33, negative unconditional: 131, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 327115, positive: 310842, positive conditional: 0, positive unconditional: 310842, negative: 15211, negative conditional: 0, negative unconditional: 15211, unknown: 1062, unknown conditional: 0, unknown unconditional: 1062] , Statistics on independence cache: Total cache size (in pairs): 1216, Positive cache size: 1127, Positive conditional cache size: 118, Positive unconditional cache size: 1009, Negative cache size: 89, Negative conditional cache size: 36, Negative unconditional cache size: 53, SemanticConditionEliminator.Independence Queries: [ total: 48126, positive: 12793, positive conditional: 12793, positive unconditional: 0, negative: 35333, negative conditional: 956, negative unconditional: 34377, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 48126, positive: 12793, positive conditional: 12793, positive unconditional: 0, negative: 35333, negative conditional: 956, negative unconditional: 34377, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 263, positive: 174, positive conditional: 118, positive unconditional: 56, negative: 89, negative conditional: 36, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 436, positive: 272, positive conditional: 142, positive unconditional: 131, negative: 164, negative conditional: 33, negative unconditional: 131, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 48126, positive: 12675, positive conditional: 12675, positive unconditional: 0, negative: 35297, negative conditional: 920, negative unconditional: 34377, unknown: 154, unknown conditional: 154, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1216, Positive cache size: 1127, Positive conditional cache size: 118, Positive unconditional cache size: 1009, Negative cache size: 89, Negative conditional cache size: 36, Negative unconditional cache size: 53, Eliminated conditions: 34377, SemanticConditionEliminator.Independence Queries: [ total: 48126, positive: 12793, positive conditional: 12793, positive unconditional: 0, negative: 35333, negative conditional: 956, negative unconditional: 34377, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 48126, positive: 12793, positive conditional: 12793, positive unconditional: 0, negative: 35333, negative conditional: 956, negative unconditional: 34377, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 263, positive: 174, positive conditional: 118, positive unconditional: 56, negative: 89, negative conditional: 36, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 436, positive: 272, positive conditional: 142, positive unconditional: 131, negative: 164, negative conditional: 33, negative unconditional: 131, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 48126, positive: 12675, positive conditional: 12675, positive unconditional: 0, negative: 35297, negative conditional: 920, negative unconditional: 34377, unknown: 154, unknown conditional: 154, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1216, Positive cache size: 1127, Positive conditional cache size: 118, Positive unconditional cache size: 1009, Negative cache size: 89, Negative conditional cache size: 36, Negative unconditional cache size: 53, Eliminated conditions: 34377, SemanticConditionEliminator.Independence Queries: [ total: 48126, positive: 12793, positive conditional: 12793, positive unconditional: 0, negative: 35333, negative conditional: 956, negative unconditional: 34377, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 48126, positive: 12793, positive conditional: 12793, positive unconditional: 0, negative: 35333, negative conditional: 956, negative unconditional: 34377, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 263, positive: 174, positive conditional: 118, positive unconditional: 56, negative: 89, negative conditional: 36, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 436, positive: 272, positive conditional: 142, positive unconditional: 131, negative: 164, negative conditional: 33, negative unconditional: 131, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 48126, positive: 12675, positive conditional: 12675, positive unconditional: 0, negative: 35297, negative conditional: 920, negative unconditional: 34377, unknown: 154, unknown conditional: 154, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1216, Positive cache size: 1127, Positive conditional cache size: 118, Positive unconditional cache size: 1009, Negative cache size: 89, Negative conditional cache size: 36, Negative unconditional cache size: 53, Eliminated conditions: 34377, SemanticConditionEliminator.Independence Queries: [ total: 48126, positive: 12793, positive conditional: 12793, positive unconditional: 0, negative: 35333, negative conditional: 956, negative unconditional: 34377, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 48126, positive: 12793, positive conditional: 12793, positive unconditional: 0, negative: 35333, negative conditional: 956, negative unconditional: 34377, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 263, positive: 174, positive conditional: 118, positive unconditional: 56, negative: 89, negative conditional: 36, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 436, positive: 272, positive conditional: 142, positive unconditional: 131, negative: 164, negative conditional: 33, negative unconditional: 131, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 48126, positive: 12675, positive conditional: 12675, positive unconditional: 0, negative: 35297, negative conditional: 920, negative unconditional: 34377, unknown: 154, unknown conditional: 154, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1216, Positive cache size: 1127, Positive conditional cache size: 118, Positive unconditional cache size: 1009, Negative cache size: 89, Negative conditional cache size: 36, Negative unconditional cache size: 53, Eliminated conditions: 34377 ], Maximal queried relation: 4, Independence queries for same thread: 20762 - CounterExampleResult [Line: 38]: assertion can be violated assertion can be violated We found a FailurePath: [L13] 0 pendingIo := 1; VAL [pendingIo=1] [L14] 0 stopped := false; VAL [pendingIo=1, stopped=false] [L15] 0 stoppingEvent := false; VAL [pendingIo=1, stopped=false, stoppingEvent=false] [L16] 0 stoppingFlag := false; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L18] FORK 0 fork 0 ServerThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L19] FORK 0 fork 1 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L48] 2 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L20] FORK 0 fork 2 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L21] FORK 0 fork 3 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L49] 2 pendingIo := pendingIo + 1; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L22] FORK 0 fork 4 DeviceThread(); VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L38] 2 assert !stopped; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L57] 2 pendingIo := pendingIo - 1; [L58] 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] [L48] 7 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L48] 6 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L25] FORK 0 fork 7 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L48] 8 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L49] 8 pendingIo := pendingIo + 1; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L48] 5 assume !stoppingFlag; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L38] 8 assert !stopped; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L49] 6 pendingIo := pendingIo + 1; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L57] 8 pendingIo := pendingIo - 1; [L58] COND FALSE 8 !(pendingIo == 0) VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L38] 6 assert !stopped; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L57] 6 pendingIo := pendingIo - 1; [L58] COND FALSE 6 !(pendingIo == 0) VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L48] 6 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L70] 1 stoppingFlag := true; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L49] 5 pendingIo := pendingIo + 1; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=true] [L80] 1 pendingIo := pendingIo - 1; [L81] COND FALSE 1 !(pendingIo == 0) VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L38] 5 assert !stopped; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L57] 5 pendingIo := pendingIo - 1; [L58] COND TRUE 5 pendingIo == 0 [L59] 5 stoppingEvent := true; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L49] 7 pendingIo := pendingIo + 1; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L72] 1 assume stoppingEvent; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L73] 1 stopped := true; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] [L38] 7 assert !stopped; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: DeviceThreadThread1of1ForFork6 with 1 thread instances CFG has 11 procedures, 82 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5997.4ms, OverallIterations: 5, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15.1ms, PartialOrderReductionTime: 4262.3ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 22, 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: 25.2ms SsaConstructionTime, 92.8ms SatisfiabilityAnalysisTime, 812.0ms InterpolantComputationTime, 314 NumberOfCodeBlocks, 314 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 266 ConstructedInterpolants, 0 QuantifiedInterpolants, 1301 SizeOfPredicates, 2 NumberOfNonLiveVariables, 189 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 58/118 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...