/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/bluetooth09-incorrect.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 19:32:29,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 19:32:29,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 19:32:29,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-24 19:32:29,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-24 19:32:29,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-24 19:32:29,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-24 19:32:29,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-24 19:32:29,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-24 19:32:29,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-24 19:32:29,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-24 19:32:29,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-24 19:32:29,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 19:32:29,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 19:32:29,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 19:32:29,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 19:32:29,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 19:32:29,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 19:32:29,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 19:32:29,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 19:32:29,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 19:32:29,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 19:32:29,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 19:32:29,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 19:32:29,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-24 19:32:29,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-24 19:32:29,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-24 19:32:29,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-24 19:32:29,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-24 19:32:29,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-24 19:32:29,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-24 19:32:29,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-24 19:32:29,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-24 19:32:29,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-24 19:32:29,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-24 19:32:29,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-24 19:32:29,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-24 19:32:29,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-24 19:32:29,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-24 19:32:29,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-24 19:32:29,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-24 19:32:29,590 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 19:32:29,626 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 19:32:29,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 19:32:29,627 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 19:32:29,627 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 19:32:29,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 19:32:29,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 19:32:29,630 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 19:32:29,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 19:32:29,630 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 19:32:29,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 19:32:29,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 19:32:29,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 19:32:29,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 19:32:29,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 19:32:29,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 19:32:29,632 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 19:32:29,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 19:32:29,632 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 19:32:29,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 19:32:29,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 19:32:29,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 19:32:29,633 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 19:32:29,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 19:32:29,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 19:32:29,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 19:32:29,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 19:32:29,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 19:32:29,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 19:32:29,651 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-24 19:32:29,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 19:32:29,652 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 19:32:29,652 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-24 19:32:29,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 19:32:29,652 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-24 19:32:29,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-24 19:32:29,653 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 19:32:29,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 19:32:29,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 19:32:29,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 19:32:29,973 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 19:32:29,974 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 19:32:29,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth09-incorrect.bpl [2021-06-24 19:32:29,975 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth09-incorrect.bpl' [2021-06-24 19:32:29,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 19:32:29,999 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 19:32:30,002 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 19:32:30,002 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 19:32:30,002 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 19:32:30,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth09-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:32:29" (1/1) ... [2021-06-24 19:32:30,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth09-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:32:29" (1/1) ... [2021-06-24 19:32:30,043 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 19:32:30,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 19:32:30,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 19:32:30,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 19:32:30,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth09-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:32:29" (1/1) ... [2021-06-24 19:32:30,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth09-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:32:29" (1/1) ... [2021-06-24 19:32:30,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth09-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:32:29" (1/1) ... [2021-06-24 19:32:30,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth09-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:32:29" (1/1) ... [2021-06-24 19:32:30,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth09-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:32:29" (1/1) ... [2021-06-24 19:32:30,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth09-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:32:29" (1/1) ... [2021-06-24 19:32:30,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth09-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:32:29" (1/1) ... [2021-06-24 19:32:30,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 19:32:30,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 19:32:30,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 19:32:30,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 19:32:30,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth09-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:32:29" (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 19:32:30,116 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 19:32:30,116 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 19:32:30,116 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 19:32:30,116 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 19:32:30,116 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 19:32:30,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 19:32:30,117 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 19:32:30,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 19:32:30,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 19:32:30,119 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 19:32:30,361 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 19:32:30,361 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 19:32:30,363 INFO L202 PluginConnector]: Adding new model bluetooth09-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 07:32:30 BoogieIcfgContainer [2021-06-24 19:32:30,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 19:32:30,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 19:32:30,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 19:32:30,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 19:32:30,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth09-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:32:29" (1/2) ... [2021-06-24 19:32:30,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd5d23b and model type bluetooth09-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 07:32:30, skipping insertion in model container [2021-06-24 19:32:30,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth09-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 07:32:30" (2/2) ... [2021-06-24 19:32:30,369 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth09-incorrect.bpl [2021-06-24 19:32:30,374 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 19:32:30,374 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 19:32:30,374 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 19:32:30,375 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 19:32:30,424 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 19:32:30,443 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 19:32:30,555 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 19:32:30,555 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 19:32:30,555 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 19:32:30,555 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 19:32:30,555 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 19:32:30,555 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 19:32:30,555 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 19:32:30,555 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork8======== [2021-06-24 19:32:30,883 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:32:30,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:32:30,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1719704481, now seen corresponding path program 1 times [2021-06-24 19:32:30,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:32:30,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059051244] [2021-06-24 19:32:30,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:32:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:32:30,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-24 19:32:30,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:32:30,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059051244] [2021-06-24 19:32:30,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059051244] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:32:30,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:32:30,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 19:32:30,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878840297] [2021-06-24 19:32:30,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 19:32:30,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:32:31,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 19:32:31,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 19:32:31,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:32:31,007 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:32:31,011 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 19:32:31,011 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:32:36,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:32:36,611 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 19:32:36,611 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:32:36,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:32:36,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1042484052, now seen corresponding path program 1 times [2021-06-24 19:32:36,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:32:36,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332637142] [2021-06-24 19:32:36,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:32:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:32:36,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-24 19:32:36,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:32:36,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332637142] [2021-06-24 19:32:36,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332637142] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:32:36,637 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:32:36,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 19:32:36,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72433743] [2021-06-24 19:32:36,639 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 19:32:36,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:32:36,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 19:32:36,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 19:32:36,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:32:36,640 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:32:36,641 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 19:32:36,641 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:32:36,641 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:32:40,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:32:40,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:32:40,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 19:32:40,528 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:32:40,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:32:40,528 INFO L82 PathProgramCache]: Analyzing trace with hash 492304295, now seen corresponding path program 1 times [2021-06-24 19:32:40,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:32:40,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443426178] [2021-06-24 19:32:40,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:32:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:32:40,672 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-24 19:32:40,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:32:40,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443426178] [2021-06-24 19:32:40,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443426178] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:32:40,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:32:40,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-24 19:32:40,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139585766] [2021-06-24 19:32:40,674 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-24 19:32:40,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:32:40,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-24 19:32:40,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=37, Unknown=0, NotChecked=0, Total=72 [2021-06-24 19:32:40,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:32:40,678 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:32:40,678 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 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 19:32:40,678 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:32:40,678 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:32:40,678 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:32:43,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:32:43,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:32:43,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-24 19:32:43,438 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 19:32:43,438 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:32:43,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:32:43,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1887916062, now seen corresponding path program 1 times [2021-06-24 19:32:43,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:32:43,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815409167] [2021-06-24 19:32:43,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:32:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 19:32:43,486 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 19:32:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 19:32:43,517 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 19:32:43,547 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-24 19:32:43,548 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-06-24 19:32:43,548 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-24 19:32:43,553 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork8 was UNSAFE (1/10) [2021-06-24 19:32:43,555 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 19:32:43,571 INFO L202 PluginConnector]: Adding new model bluetooth09-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 07:32:43 BasicIcfg [2021-06-24 19:32:43,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 19:32:43,572 INFO L168 Benchmark]: Toolchain (without parser) took 13573.12 ms. Allocated memory was 185.6 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 165.6 MB in the beginning and 1.7 GB in the end (delta: -1.5 GB). Peak memory consumption was 326.8 MB. Max. memory is 8.0 GB. [2021-06-24 19:32:43,572 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 185.6 MB. Free memory is still 166.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 19:32:43,573 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.95 ms. Allocated memory is still 185.6 MB. Free memory was 165.5 MB in the beginning and 163.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-24 19:32:43,573 INFO L168 Benchmark]: Boogie Preprocessor took 13.01 ms. Allocated memory is still 185.6 MB. Free memory was 163.7 MB in the beginning and 162.9 MB in the end (delta: 839.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 19:32:43,573 INFO L168 Benchmark]: RCFGBuilder took 304.46 ms. Allocated memory is still 185.6 MB. Free memory was 162.8 MB in the beginning and 149.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-24 19:32:43,574 INFO L168 Benchmark]: TraceAbstraction took 13206.50 ms. Allocated memory was 185.6 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 149.4 MB in the beginning and 1.7 GB in the end (delta: -1.5 GB). Peak memory consumption was 311.0 MB. Max. memory is 8.0 GB. [2021-06-24 19:32:43,576 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 185.6 MB. Free memory is still 166.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 41.95 ms. Allocated memory is still 185.6 MB. Free memory was 165.5 MB in the beginning and 163.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.01 ms. Allocated memory is still 185.6 MB. Free memory was 163.7 MB in the beginning and 162.9 MB in the end (delta: 839.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 304.46 ms. Allocated memory is still 185.6 MB. Free memory was 162.8 MB in the beginning and 149.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 13206.50 ms. Allocated memory was 185.6 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 149.4 MB in the beginning and 1.7 GB in the end (delta: -1.5 GB). Peak memory consumption was 311.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1054518, positive: 990480, positive conditional: 990480, positive unconditional: 0, negative: 64038, negative conditional: 64038, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 995377, positive: 990480, positive conditional: 990480, positive unconditional: 0, negative: 4897, negative conditional: 4897, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 995377, positive: 989331, positive conditional: 0, positive unconditional: 989331, negative: 6046, negative conditional: 0, negative unconditional: 6046, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1507, positive: 1441, positive conditional: 0, positive unconditional: 1441, negative: 66, negative conditional: 0, negative unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1507, positive: 1376, positive conditional: 0, positive unconditional: 1376, negative: 131, negative conditional: 0, negative unconditional: 131, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 131, positive: 65, positive conditional: 0, positive unconditional: 65, negative: 66, negative conditional: 0, negative unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 254, positive: 159, positive conditional: 94, positive unconditional: 65, negative: 95, negative conditional: 29, negative unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 592, positive: 359, positive conditional: 135, positive unconditional: 223, negative: 234, negative conditional: 39, negative unconditional: 195, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 995377, positive: 987890, positive conditional: 0, positive unconditional: 987890, negative: 5980, negative conditional: 0, negative unconditional: 5980, unknown: 1507, unknown conditional: 0, unknown unconditional: 1507] , Statistics on independence cache: Total cache size (in pairs): 1630, Positive cache size: 1535, Positive conditional cache size: 94, Positive unconditional cache size: 1441, Negative cache size: 95, Negative conditional cache size: 29, Negative unconditional cache size: 66, SemanticConditionEliminator.Independence Queries: [ total: 12846, positive: 1149, positive conditional: 1149, positive unconditional: 0, negative: 11697, negative conditional: 1500, negative unconditional: 10197, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 12846, positive: 1149, positive conditional: 1149, positive unconditional: 0, negative: 11697, negative conditional: 1500, negative unconditional: 10197, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 254, positive: 159, positive conditional: 94, positive unconditional: 65, negative: 95, negative conditional: 29, negative unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 592, positive: 359, positive conditional: 135, positive unconditional: 223, negative: 234, negative conditional: 39, negative unconditional: 195, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12846, positive: 1055, positive conditional: 1055, positive unconditional: 0, negative: 11668, negative conditional: 1471, negative unconditional: 10197, unknown: 123, unknown conditional: 123, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1630, Positive cache size: 1535, Positive conditional cache size: 94, Positive unconditional cache size: 1441, Negative cache size: 95, Negative conditional cache size: 29, Negative unconditional cache size: 66, Eliminated conditions: 10197, SemanticConditionEliminator.Independence Queries: [ total: 12846, positive: 1149, positive conditional: 1149, positive unconditional: 0, negative: 11697, negative conditional: 1500, negative unconditional: 10197, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 12846, positive: 1149, positive conditional: 1149, positive unconditional: 0, negative: 11697, negative conditional: 1500, negative unconditional: 10197, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 254, positive: 159, positive conditional: 94, positive unconditional: 65, negative: 95, negative conditional: 29, negative unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 592, positive: 359, positive conditional: 135, positive unconditional: 223, negative: 234, negative conditional: 39, negative unconditional: 195, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12846, positive: 1055, positive conditional: 1055, positive unconditional: 0, negative: 11668, negative conditional: 1471, negative unconditional: 10197, unknown: 123, unknown conditional: 123, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1630, Positive cache size: 1535, Positive conditional cache size: 94, Positive unconditional cache size: 1441, Negative cache size: 95, Negative conditional cache size: 29, Negative unconditional cache size: 66, Eliminated conditions: 10197, SemanticConditionEliminator.Independence Queries: [ total: 12846, positive: 1149, positive conditional: 1149, positive unconditional: 0, negative: 11697, negative conditional: 1500, negative unconditional: 10197, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 12846, positive: 1149, positive conditional: 1149, positive unconditional: 0, negative: 11697, negative conditional: 1500, negative unconditional: 10197, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 254, positive: 159, positive conditional: 94, positive unconditional: 65, negative: 95, negative conditional: 29, negative unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 592, positive: 359, positive conditional: 135, positive unconditional: 223, negative: 234, negative conditional: 39, negative unconditional: 195, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12846, positive: 1055, positive conditional: 1055, positive unconditional: 0, negative: 11668, negative conditional: 1471, negative unconditional: 10197, unknown: 123, unknown conditional: 123, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1630, Positive cache size: 1535, Positive conditional cache size: 94, Positive unconditional cache size: 1441, Negative cache size: 95, Negative conditional cache size: 29, Negative unconditional cache size: 66, Eliminated conditions: 10197 ], Maximal queried relation: 3, Independence queries for same thread: 59141 - CounterExampleResult [Line: 40]: 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] [L50] 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] [L22] FORK 0 fork 4 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L51] 2 pendingIo := pendingIo + 1; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L50] 5 assume !stoppingFlag; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L23] FORK 0 fork 5 DeviceThread(); VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L24] FORK 0 fork 6 DeviceThread(); VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L51] 5 pendingIo := pendingIo + 1; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L25] FORK 0 fork 7 DeviceThread(); VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L40] 2 assert !stopped; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L26] FORK 0 fork 8 DeviceThread(); VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L59] 2 pendingIo := pendingIo - 1; [L60] COND FALSE 2 !(pendingIo == 0) VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L50] 2 assume !stoppingFlag; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L50] 6 assume !stoppingFlag; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L27] FORK 0 fork 9 DeviceThread(); VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L50] 10 assume !stoppingFlag; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L40] 5 assert !stopped; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L51] 6 pendingIo := pendingIo + 1; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L59] 5 pendingIo := pendingIo - 1; [L60] COND FALSE 5 !(pendingIo == 0) VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L51] 2 pendingIo := pendingIo + 1; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L40] 6 assert !stopped; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L50] 5 assume !stoppingFlag; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L51] 10 pendingIo := pendingIo + 1; VAL [pendingIo=4, stopped=false, stoppingEvent=false, stoppingFlag=false] [L59] 6 pendingIo := pendingIo - 1; [L60] COND FALSE 6 !(pendingIo == 0) VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L40] 10 assert !stopped; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L50] 6 assume !stoppingFlag; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L50] 9 assume !stoppingFlag; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L72] 1 stoppingFlag := true; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=true] [L40] 2 assert !stopped; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=true] [L51] 6 pendingIo := pendingIo + 1; VAL [pendingIo=4, stopped=false, stoppingEvent=false, stoppingFlag=true] [L40] 6 assert !stopped; VAL [pendingIo=4, stopped=false, stoppingEvent=false, stoppingFlag=true] [L82] 1 pendingIo := pendingIo - 1; [L83] COND FALSE 1 !(pendingIo == 0) VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=true] [L59] 6 pendingIo := pendingIo - 1; [L60] COND FALSE 6 !(pendingIo == 0) VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=true] [L59] 10 pendingIo := pendingIo - 1; [L60] COND FALSE 10 !(pendingIo == 0) VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L59] 2 pendingIo := pendingIo - 1; [L60] COND TRUE 2 pendingIo == 0 [L61] 2 stoppingEvent := true; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L74] 1 assume stoppingEvent; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L51] 5 pendingIo := pendingIo + 1; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L40] 5 assert !stopped; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L59] 5 pendingIo := pendingIo - 1; [L60] COND TRUE 5 pendingIo == 0 [L61] 5 stoppingEvent := true; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L51] 9 pendingIo := pendingIo + 1; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L75] 1 stopped := true; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] [L40] 9 assert !stopped; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: DeviceThreadThread1of1ForFork8 with 1 thread instances CFG has 13 procedures, 98 locations, 20 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13095.5ms, OverallIterations: 4, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 28.1ms, PartialOrderReductionTime: 12543.6ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.4ms SsaConstructionTime, 75.1ms SatisfiabilityAnalysisTime, 175.1ms InterpolantComputationTime, 191 NumberOfCodeBlocks, 191 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 372 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 17/17 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...