/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-incorrect02.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57 [2021-07-01 10:46:17,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-01 10:46:17,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-01 10:46:17,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-01 10:46:17,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe.epf [2021-07-01 10:46:17,259 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-01 10:46:17,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-01 10:46:17,260 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-01 10:46:17,260 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-01 10:46:17,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-01 10:46:17,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-01 10:46:17,262 INFO L138 SettingsManager]: * Use SBE=true [2021-07-01 10:46:17,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-01 10:46:17,262 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-01 10:46:17,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-01 10:46:17,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-01 10:46:17,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-01 10:46:17,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-01 10:46:17,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-01 10:46:17,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-01 10:46:17,263 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-01 10:46:17,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-01 10:46:17,264 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-01 10:46:17,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-01 10:46:17,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-01 10:46:17,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-01 10:46:17,265 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-01 10:46:17,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-01 10:46:17,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 10:46:17,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-01 10:46:17,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-01 10:46:17,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-01 10:46:17,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-01 10:46:17,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-01 10:46:17,266 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-01 10:46:17,266 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-01 10:46:17,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-01 10:46:17,266 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-07-01 10:46:17,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-01 10:46:17,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-01 10:46:17,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-01 10:46:17,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-01 10:46:17,550 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-01 10:46:17,553 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-01 10:46:17,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-incorrect02.bpl [2021-07-01 10:46:17,554 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-incorrect02.bpl' [2021-07-01 10:46:17,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-01 10:46:17,587 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-01 10:46:17,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-01 10:46:17,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-01 10:46:17,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-01 10:46:17,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-incorrect02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:46:17" (1/1) ... [2021-07-01 10:46:17,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-incorrect02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:46:17" (1/1) ... [2021-07-01 10:46:17,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-01 10:46:17,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-01 10:46:17,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-01 10:46:17,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-01 10:46:17,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-incorrect02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:46:17" (1/1) ... [2021-07-01 10:46:17,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-incorrect02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:46:17" (1/1) ... [2021-07-01 10:46:17,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-incorrect02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:46:17" (1/1) ... [2021-07-01 10:46:17,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-incorrect02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:46:17" (1/1) ... [2021-07-01 10:46:17,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-incorrect02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:46:17" (1/1) ... [2021-07-01 10:46:17,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-incorrect02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:46:17" (1/1) ... [2021-07-01 10:46:17,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-incorrect02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:46:17" (1/1) ... [2021-07-01 10:46:17,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-01 10:46:17,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-01 10:46:17,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-01 10:46:17,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-01 10:46:17,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-incorrect02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:46:17" (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 [2021-07-01 10:46:17,700 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-07-01 10:46:17,700 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-07-01 10:46:17,700 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-07-01 10:46:17,701 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-01 10:46:17,701 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-01 10:46:17,701 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-01 10:46:17,701 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-01 10:46:17,701 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-01 10:46:17,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-01 10:46:17,701 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-01 10:46:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-01 10:46:17,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-01 10:46:17,703 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-01 10:46:18,020 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-01 10:46:18,021 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-01 10:46:18,023 INFO L202 PluginConnector]: Adding new model bluetooth-incorrect02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:46:18 BoogieIcfgContainer [2021-07-01 10:46:18,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-01 10:46:18,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-01 10:46:18,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-01 10:46:18,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-01 10:46:18,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-incorrect02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:46:17" (1/2) ... [2021-07-01 10:46:18,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dcf3cc2 and model type bluetooth-incorrect02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:46:18, skipping insertion in model container [2021-07-01 10:46:18,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-incorrect02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:46:18" (2/2) ... [2021-07-01 10:46:18,029 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-incorrect02.bpl [2021-07-01 10:46:18,033 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-01 10:46:18,034 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-01 10:46:18,034 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-01 10:46:18,035 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-01 10:46:18,089 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-01 10:46:18,109 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 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 [2021-07-01 10:46:18,175 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 10:46:18,175 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 10:46:18,176 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 10:46:18,176 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 10:46:18,176 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 10:46:18,176 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 10:46:18,176 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 10:46:18,177 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-01 10:46:18,355 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2) [2021-07-01 10:46:18,357 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 [2021-07-01 10:46:18,370 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 10:46:18,370 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 10:46:18,370 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 10:46:18,371 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 10:46:18,371 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 10:46:18,371 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 10:46:18,371 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 10:46:18,371 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadWithAssertThread1of1ForFork1======== [2021-07-01 10:46:18,379 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:46:18,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:46:18,384 INFO L82 PathProgramCache]: Analyzing trace with hash -420506062, now seen corresponding path program 1 times [2021-07-01 10:46:18,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:46:18,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360024117] [2021-07-01 10:46:18,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:46:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:46:18,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:46:18,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:46:18,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360024117] [2021-07-01 10:46:18,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360024117] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 10:46:18,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 10:46:18,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-01 10:46:18,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873494358] [2021-07-01 10:46:18,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 10:46:18,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:46:18,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 10:46:18,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 10:46:18,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 10:46:18,537 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 10:46:18,539 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-07-01 10:46:18,539 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 10:46:18,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 10:46:18,594 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-01 10:46:18,594 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:46:18,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:46:18,602 INFO L82 PathProgramCache]: Analyzing trace with hash -756815345, now seen corresponding path program 1 times [2021-07-01 10:46:18,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:46:18,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584818116] [2021-07-01 10:46:18,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:46:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:46:18,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:46:18,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:46:18,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584818116] [2021-07-01 10:46:18,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584818116] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 10:46:18,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 10:46:18,618 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-01 10:46:18,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507369822] [2021-07-01 10:46:18,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 10:46:18,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:46:18,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 10:46:18,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 10:46:18,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 10:46:18,620 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 10:46:18,621 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-07-01 10:46:18,621 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 10:46:18,621 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 10:46:18,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 10:46:18,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 10:46:18,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-01 10:46:18,722 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:46:18,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:46:18,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1992838756, now seen corresponding path program 1 times [2021-07-01 10:46:18,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:46:18,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250378798] [2021-07-01 10:46:18,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:46:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:46:18,823 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-01 10:46:18,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:46:18,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250378798] [2021-07-01 10:46:18,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250378798] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 10:46:18,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 10:46:18,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-01 10:46:18,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086831272] [2021-07-01 10:46:18,825 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-01 10:46:18,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:46:18,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-01 10:46:18,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-07-01 10:46:18,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 10:46:18,828 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 10:46:18,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-07-01 10:46:18,828 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 10:46:18,829 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 10:46:18,829 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 10:46:18,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 10:46:18,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 10:46:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 10:46:18,981 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-01 10:46:18,982 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:46:18,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:46:18,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1712078673, now seen corresponding path program 1 times [2021-07-01 10:46:18,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:46:18,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124274855] [2021-07-01 10:46:18,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:46:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-01 10:46:19,003 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-01 10:46:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-01 10:46:19,007 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-01 10:46:19,027 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-01 10:46:19,028 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-07-01 10:46:19,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-01 10:46:19,035 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadWithAssertThread1of1ForFork1 was UNSAFE (2/2) [2021-07-01 10:46:19,037 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-01 10:46:19,047 INFO L202 PluginConnector]: Adding new model bluetooth-incorrect02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:46:19 BasicIcfg [2021-07-01 10:46:19,047 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-01 10:46:19,048 INFO L168 Benchmark]: Toolchain (without parser) took 1461.15 ms. Allocated memory is still 229.6 MB. Free memory was 209.1 MB in the beginning and 164.0 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.5 MB. Max. memory is 8.0 GB. [2021-07-01 10:46:19,049 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 229.6 MB. Free memory was 210.1 MB in the beginning and 210.1 MB in the end (delta: 74.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-01 10:46:19,049 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.27 ms. Allocated memory is still 229.6 MB. Free memory was 208.9 MB in the beginning and 207.1 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-01 10:46:19,050 INFO L168 Benchmark]: Boogie Preprocessor took 16.96 ms. Allocated memory is still 229.6 MB. Free memory was 207.1 MB in the beginning and 206.2 MB in the end (delta: 917.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-01 10:46:19,050 INFO L168 Benchmark]: RCFGBuilder took 375.51 ms. Allocated memory is still 229.6 MB. Free memory was 206.1 MB in the beginning and 192.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-07-01 10:46:19,050 INFO L168 Benchmark]: TraceAbstraction took 1023.49 ms. Allocated memory is still 229.6 MB. Free memory was 191.6 MB in the beginning and 164.0 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.7 MB. Max. memory is 8.0 GB. [2021-07-01 10:46:19,052 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 229.6 MB. Free memory was 210.1 MB in the beginning and 210.1 MB in the end (delta: 74.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 36.27 ms. Allocated memory is still 229.6 MB. Free memory was 208.9 MB in the beginning and 207.1 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 16.96 ms. Allocated memory is still 229.6 MB. Free memory was 207.1 MB in the beginning and 206.2 MB in the end (delta: 917.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 375.51 ms. Allocated memory is still 229.6 MB. Free memory was 206.1 MB in the beginning and 192.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1023.49 ms. Allocated memory is still 229.6 MB. Free memory was 191.6 MB in the beginning and 164.0 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.7 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: 45, positive: 38, positive conditional: 38, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 40, positive: 38, positive conditional: 38, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 40, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 35, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 35, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 100, positive: 92, positive conditional: 0, positive unconditional: 92, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 40, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 35, unknown conditional: 0, unknown unconditional: 35] , Statistics on independence cache: Total cache size (in pairs): 35, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 ], Maximal queried relation: 0, Independence queries for same thread: 5 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1149, positive: 1042, positive conditional: 1042, positive unconditional: 0, negative: 107, negative conditional: 107, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 1064, positive: 1042, positive conditional: 1042, positive unconditional: 0, negative: 22, negative conditional: 22, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 1064, positive: 1036, positive conditional: 0, positive unconditional: 1036, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 107, positive: 100, positive conditional: 0, positive unconditional: 100, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 107, positive: 92, positive conditional: 0, positive unconditional: 92, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 15, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 20, positive: 10, positive conditional: 2, positive unconditional: 8, negative: 10, negative conditional: 3, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 106, positive: 46, positive conditional: 12, positive unconditional: 34, negative: 61, negative conditional: 8, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1064, positive: 936, positive conditional: 0, positive unconditional: 936, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 107, unknown conditional: 0, unknown unconditional: 107] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 102, Positive conditional cache size: 2, Positive unconditional cache size: 100, Negative cache size: 10, Negative conditional cache size: 3, Negative unconditional cache size: 7, SemanticConditionEliminator.Independence Queries: [ total: 72, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 66, negative conditional: 5, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 72, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 66, negative conditional: 5, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 20, positive: 10, positive conditional: 2, positive unconditional: 8, negative: 10, negative conditional: 3, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 106, positive: 46, positive conditional: 12, positive unconditional: 34, negative: 61, negative conditional: 8, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 72, positive: 4, positive conditional: 4, positive unconditional: 0, negative: 63, negative conditional: 2, negative unconditional: 61, unknown: 5, unknown conditional: 5, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 102, Positive conditional cache size: 2, Positive unconditional cache size: 100, Negative cache size: 10, Negative conditional cache size: 3, Negative unconditional cache size: 7, Eliminated conditions: 61, SemanticConditionEliminator.Independence Queries: [ total: 72, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 66, negative conditional: 5, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 72, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 66, negative conditional: 5, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 20, positive: 10, positive conditional: 2, positive unconditional: 8, negative: 10, negative conditional: 3, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 106, positive: 46, positive conditional: 12, positive unconditional: 34, negative: 61, negative conditional: 8, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 72, positive: 4, positive conditional: 4, positive unconditional: 0, negative: 63, negative conditional: 2, negative unconditional: 61, unknown: 5, unknown conditional: 5, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 102, Positive conditional cache size: 2, Positive unconditional cache size: 100, Negative cache size: 10, Negative conditional cache size: 3, Negative unconditional cache size: 7, Eliminated conditions: 61, SemanticConditionEliminator.Independence Queries: [ total: 72, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 66, negative conditional: 5, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 72, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 66, negative conditional: 5, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 20, positive: 10, positive conditional: 2, positive unconditional: 8, negative: 10, negative conditional: 3, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 106, positive: 46, positive conditional: 12, positive unconditional: 34, negative: 61, negative conditional: 8, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 72, positive: 4, positive conditional: 4, positive unconditional: 0, negative: 63, negative conditional: 2, negative unconditional: 61, unknown: 5, unknown conditional: 5, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 102, Positive conditional cache size: 2, Positive unconditional cache size: 100, Negative cache size: 10, Negative conditional cache size: 3, Negative unconditional cache size: 7, Eliminated conditions: 61 ], Maximal queried relation: 3, Independence queries for same thread: 85 - CounterExampleResult [Line: 35]: assertion can be violated assertion can be violated We found a FailurePath: [L14] 0 pendingIo := 1; VAL [pendingIo=1] [L15] 0 stopped := false; VAL [pendingIo=1, stopped=false] [L16] 0 stoppingEvent := false; VAL [pendingIo=1, stopped=false, stoppingEvent=false] [L17] 0 stoppingFlag := false; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L19] FORK 0 fork 0 ServerThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L21] FORK 0 fork 1 DeviceThreadWithAssert(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L57] 2 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L79] 1 stoppingFlag := true; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L89] 1 pendingIo := pendingIo - 1; [L90] COND TRUE 1 pendingIo == 0 [L91] 1 stoppingEvent := true; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L58] 2 pendingIo := pendingIo + 1; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L81] 1 assume stoppingEvent; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L82] 1 stopped := true; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] [L35] 2 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 7 procedures, 44 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 214.5ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.2ms, PartialOrderReductionTime: 148.8ms, 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: DeviceThreadWithAssertThread1of1ForFork1 with 1 thread instances CFG has 7 procedures, 44 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 676.4ms, OverallIterations: 4, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.0ms, PartialOrderReductionTime: 314.3ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.5ms SsaConstructionTime, 39.6ms SatisfiabilityAnalysisTime, 140.9ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 146 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 5/5 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...