/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-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth05-incorrect.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 18:26:11,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 18:26:11,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 18:26:11,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-24 18:26:11,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-24 18:26:11,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-24 18:26:11,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-24 18:26:11,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-24 18:26:11,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-24 18:26:11,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-24 18:26:11,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-24 18:26:11,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-24 18:26:11,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 18:26:11,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 18:26:11,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 18:26:11,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 18:26:11,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 18:26:11,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 18:26:11,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 18:26:11,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 18:26:11,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 18:26:11,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 18:26:11,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 18:26:11,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 18:26:11,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-24 18:26:11,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-24 18:26:11,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-24 18:26:11,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-24 18:26:11,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-24 18:26:11,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-24 18:26:11,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-24 18:26:11,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-24 18:26:11,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-24 18:26:11,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-24 18:26:11,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-24 18:26:11,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-24 18:26:11,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-24 18:26:11,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-24 18:26:11,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-24 18:26:11,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-24 18:26:11,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-24 18:26:11,714 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-FA-NoLbe-Delay.epf [2021-06-24 18:26:11,742 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 18:26:11,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 18:26:11,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 18:26:11,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 18:26:11,744 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 18:26:11,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 18:26:11,744 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 18:26:11,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 18:26:11,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 18:26:11,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 18:26:11,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 18:26:11,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 18:26:11,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 18:26:11,746 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 18:26:11,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 18:26:11,746 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 18:26:11,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 18:26:11,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 18:26:11,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 18:26:11,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 18:26:11,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 18:26:11,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 18:26:11,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 18:26:11,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 18:26:11,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 18:26:11,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 18:26:11,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 18:26:11,747 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 18:26:11,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 18:26:11,747 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-24 18:26:11,748 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 18:26:11,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 18:26:11,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 18:26:11,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 18:26:11,989 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 18:26:11,990 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 18:26:11,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth05-incorrect.bpl [2021-06-24 18:26:11,990 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth05-incorrect.bpl' [2021-06-24 18:26:12,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 18:26:12,007 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 18:26:12,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 18:26:12,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 18:26:12,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 18:26:12,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,032 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 18:26:12,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 18:26:12,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 18:26:12,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 18:26:12,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 18:26:12,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 18:26:12,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 18:26:12,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 18:26:12,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (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 18:26:12,111 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 18:26:12,112 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 18:26:12,112 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 18:26:12,112 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 18:26:12,112 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 18:26:12,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 18:26:12,112 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 18:26:12,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 18:26:12,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 18:26:12,113 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 18:26:12,239 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 18:26:12,239 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 18:26:12,241 INFO L202 PluginConnector]: Adding new model bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 06:26:12 BoogieIcfgContainer [2021-06-24 18:26:12,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 18:26:12,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 18:26:12,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 18:26:12,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 18:26:12,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/2) ... [2021-06-24 18:26:12,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123049fb and model type bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 06:26:12, skipping insertion in model container [2021-06-24 18:26:12,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 06:26:12" (2/2) ... [2021-06-24 18:26:12,246 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth05-incorrect.bpl [2021-06-24 18:26:12,249 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 18:26:12,250 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 18:26:12,250 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 18:26:12,250 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 18:26:12,293 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 18:26:12,308 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-06-24 18:26:12,325 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:26:12,326 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:26:12,326 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:26:12,326 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:26:12,326 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:26:12,326 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:26:12,326 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:26:12,326 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-24 18:26:14,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 9335 states, 7780 states have (on average 2.2731362467866325) internal successors, (17685), 9334 states have internal predecessors, (17685), 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 18:26:14,200 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-24 18:26:14,201 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/6) [2021-06-24 18:26:14,202 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-24 18:26:14,210 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:26:14,210 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:26:14,210 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:26:14,210 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:26:14,211 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:26:14,211 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:26:14,211 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:26:14,211 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork4======== [2021-06-24 18:27:03,631 INFO L276 IsEmpty]: Start isEmpty. Operand has 85799 states, 85639 states have (on average 5.74007169630659) internal successors, (491574), 85798 states have internal predecessors, (491574), 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 18:27:03,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-24 18:27:03,647 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:27:03,657 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:27:03,657 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:27:03,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:27:03,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1347614714, now seen corresponding path program 1 times [2021-06-24 18:27:03,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:27:03,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397756311] [2021-06-24 18:27:03,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:27:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:27:03,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:27:03,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:27:03,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:27:03,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:27:03,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 18:27:03,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:27:03,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397756311] [2021-06-24 18:27:03,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397756311] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:27:03,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:27:03,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 18:27:03,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114572138] [2021-06-24 18:27:03,782 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 18:27:03,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:27:03,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 18:27:03,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:27:03,949 INFO L87 Difference]: Start difference. First operand has 85799 states, 85639 states have (on average 5.74007169630659) internal successors, (491574), 85798 states have internal predecessors, (491574), 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) Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 18:27:04,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:27:04,961 INFO L93 Difference]: Finished difference Result 79785 states and 418477 transitions. [2021-06-24 18:27:04,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 18:27:04,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) Word has length 12 [2021-06-24 18:27:04,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:27:05,368 INFO L225 Difference]: With dead ends: 79785 [2021-06-24 18:27:05,368 INFO L226 Difference]: Without dead ends: 56607 [2021-06-24 18:27:05,369 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:27:06,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56607 states. [2021-06-24 18:27:08,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56607 to 56547. [2021-06-24 18:27:08,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56547 states, 56515 states have (on average 5.129576218702999) internal successors, (289898), 56546 states have internal predecessors, (289898), 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 18:27:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56547 states to 56547 states and 289898 transitions. [2021-06-24 18:27:08,775 INFO L78 Accepts]: Start accepts. Automaton has 56547 states and 289898 transitions. Word has length 12 [2021-06-24 18:27:08,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:27:08,776 INFO L482 AbstractCegarLoop]: Abstraction has 56547 states and 289898 transitions. [2021-06-24 18:27:08,776 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 18:27:08,776 INFO L276 IsEmpty]: Start isEmpty. Operand 56547 states and 289898 transitions. [2021-06-24 18:27:08,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-24 18:27:08,799 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:27:08,799 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:27:08,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 18:27:08,800 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:27:08,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:27:08,800 INFO L82 PathProgramCache]: Analyzing trace with hash 545860420, now seen corresponding path program 1 times [2021-06-24 18:27:08,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:27:08,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131666194] [2021-06-24 18:27:08,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:27:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:27:08,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:27:08,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:27:08,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:27:08,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:27:08,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:27:08,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:27:08,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 18:27:08,995 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:27:08,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131666194] [2021-06-24 18:27:08,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131666194] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:27:08,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:27:08,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 18:27:08,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643184249] [2021-06-24 18:27:08,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 18:27:08,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:27:08,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 18:27:08,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:27:08,997 INFO L87 Difference]: Start difference. First operand 56547 states and 289898 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 18:27:09,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:27:09,675 INFO L93 Difference]: Finished difference Result 56175 states and 245007 transitions. [2021-06-24 18:27:09,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 18:27:09,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) Word has length 16 [2021-06-24 18:27:09,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:27:10,171 INFO L225 Difference]: With dead ends: 56175 [2021-06-24 18:27:10,171 INFO L226 Difference]: Without dead ends: 35835 [2021-06-24 18:27:10,172 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:27:10,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35835 states. [2021-06-24 18:27:11,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35835 to 34749. [2021-06-24 18:27:11,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34749 states, 34717 states have (on average 4.373390557939914) internal successors, (151831), 34748 states have internal predecessors, (151831), 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 18:27:11,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34749 states to 34749 states and 151831 transitions. [2021-06-24 18:27:11,847 INFO L78 Accepts]: Start accepts. Automaton has 34749 states and 151831 transitions. Word has length 16 [2021-06-24 18:27:11,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:27:11,847 INFO L482 AbstractCegarLoop]: Abstraction has 34749 states and 151831 transitions. [2021-06-24 18:27:11,847 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 18:27:11,847 INFO L276 IsEmpty]: Start isEmpty. Operand 34749 states and 151831 transitions. [2021-06-24 18:27:11,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-24 18:27:11,859 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:27:11,859 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:27:11,859 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 18:27:11,859 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:27:11,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:27:11,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1279278584, now seen corresponding path program 2 times [2021-06-24 18:27:11,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:27:11,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561320108] [2021-06-24 18:27:11,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:27:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 18:27:11,866 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 18:27:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 18:27:11,870 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 18:27:11,880 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-24 18:27:11,881 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-06-24 18:27:11,881 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 18:27:11,881 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork4 was UNSAFE (2/6) [2021-06-24 18:27:11,882 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 18:27:11,890 INFO L202 PluginConnector]: Adding new model bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 06:27:11 BasicIcfg [2021-06-24 18:27:11,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 18:27:11,891 INFO L168 Benchmark]: Toolchain (without parser) took 59883.20 ms. Allocated memory was 191.9 MB in the beginning and 4.0 GB in the end (delta: 3.9 GB). Free memory was 173.5 MB in the beginning and 2.7 GB in the end (delta: -2.6 GB). Peak memory consumption was 1.3 GB. Max. memory is 8.0 GB. [2021-06-24 18:27:11,891 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 191.9 MB. Free memory is still 174.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 18:27:11,891 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.53 ms. Allocated memory is still 191.9 MB. Free memory was 173.4 MB in the beginning and 171.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-24 18:27:11,892 INFO L168 Benchmark]: Boogie Preprocessor took 12.57 ms. Allocated memory is still 191.9 MB. Free memory was 171.7 MB in the beginning and 170.8 MB in the end (delta: 847.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 18:27:11,892 INFO L168 Benchmark]: RCFGBuilder took 194.12 ms. Allocated memory is still 191.9 MB. Free memory was 170.7 MB in the beginning and 158.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-24 18:27:11,893 INFO L168 Benchmark]: TraceAbstraction took 59647.63 ms. Allocated memory was 191.9 MB in the beginning and 4.0 GB in the end (delta: 3.9 GB). Free memory was 157.6 MB in the beginning and 2.7 GB in the end (delta: -2.6 GB). Peak memory consumption was 1.3 GB. Max. memory is 8.0 GB. [2021-06-24 18:27:11,894 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 0.11 ms. Allocated memory is still 191.9 MB. Free memory is still 174.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 24.53 ms. Allocated memory is still 191.9 MB. Free memory was 173.4 MB in the beginning and 171.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 12.57 ms. Allocated memory is still 191.9 MB. Free memory was 171.7 MB in the beginning and 170.8 MB in the end (delta: 847.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 194.12 ms. Allocated memory is still 191.9 MB. Free memory was 170.7 MB in the beginning and 158.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 59647.63 ms. Allocated memory was 191.9 MB in the beginning and 4.0 GB in the end (delta: 3.9 GB). Free memory was 157.6 MB in the beginning and 2.7 GB in the end (delta: -2.6 GB). Peak memory consumption was 1.3 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 52832, positive: 46117, positive conditional: 46117, positive unconditional: 0, negative: 6715, negative conditional: 6715, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 48875, positive: 46117, positive conditional: 0, positive unconditional: 46117, negative: 2758, negative conditional: 0, negative unconditional: 2758, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 453, positive: 424, positive conditional: 0, positive unconditional: 424, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 453, positive: 396, positive conditional: 0, positive unconditional: 396, negative: 57, negative conditional: 0, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 57, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 207, positive: 124, positive conditional: 0, positive unconditional: 124, negative: 82, negative conditional: 0, negative unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 48875, positive: 45693, positive conditional: 0, positive unconditional: 45693, negative: 2729, negative conditional: 0, negative unconditional: 2729, unknown: 453, unknown conditional: 0, unknown unconditional: 453] , Statistics on independence cache: Total cache size (in pairs): 453, Positive cache size: 424, Positive conditional cache size: 0, Positive unconditional cache size: 424, Negative cache size: 29, Negative conditional cache size: 0, Negative unconditional cache size: 29, Independence queries for same thread: 3957 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1553134, positive: 1353095, positive conditional: 1353095, positive unconditional: 0, negative: 200039, negative conditional: 200039, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1427006, positive: 1353095, positive conditional: 0, positive unconditional: 1353095, negative: 73911, negative conditional: 0, negative unconditional: 73911, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 971, positive: 903, positive conditional: 0, positive unconditional: 903, negative: 68, negative conditional: 0, negative unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 971, positive: 851, positive conditional: 0, positive unconditional: 851, negative: 120, negative conditional: 0, negative unconditional: 120, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 120, positive: 52, positive conditional: 0, positive unconditional: 52, negative: 68, negative conditional: 0, negative unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 252, positive: 115, positive conditional: 0, positive unconditional: 115, negative: 137, negative conditional: 0, negative unconditional: 137, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1427006, positive: 1352192, positive conditional: 0, positive unconditional: 1352192, negative: 73843, negative conditional: 0, negative unconditional: 73843, unknown: 971, unknown conditional: 0, unknown unconditional: 971] , Statistics on independence cache: Total cache size (in pairs): 971, Positive cache size: 903, Positive conditional cache size: 0, Positive unconditional cache size: 903, Negative cache size: 68, Negative conditional cache size: 0, Negative unconditional cache size: 68, Independence queries for same thread: 126128 - CounterExampleResult [Line: 36]: assertion can be violated assertion can be violated We found a FailurePath: [L13] 0 pendingIo := 1; VAL [pendingIo=1] [L14] 0 stopped := false; VAL [pendingIo=1, stopped=false] [L15] 0 stoppingEvent := false; VAL [pendingIo=1, stopped=false, stoppingEvent=false] [L16] 0 stoppingFlag := false; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L18] FORK 0 fork 0 ServerThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L19] FORK 0 fork 1 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L20] FORK 0 fork 2 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [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] [L46] 5 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L68] 1 stoppingFlag := true; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L78] 1 pendingIo := pendingIo - 1; [L79] COND TRUE 1 pendingIo == 0 [L80] 1 stoppingEvent := true; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L70] 1 assume stoppingEvent; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L71] 1 stopped := true; VAL [pendingIo=0, stopped=true, stoppingEvent=true, stoppingFlag=true] [L47] 5 pendingIo := pendingIo + 1; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] [L36] 5 assert !stopped; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 9 procedures, 66 locations, 12 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1877.2ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 92.6ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1781.7ms, PartialOrderReductionTime: 1766.9ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9335occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: DeviceThreadThread1of1ForFork4 with 1 thread instances CFG has 9 procedures, 66 locations, 12 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 57670.9ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 469.2ms, AutomataDifference: 2761.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 49001.4ms, PartialOrderReductionTime: 48999.0ms, HoareTripleCheckerStatistics: 111 SDtfs, 55 SDslu, 56 SDs, 0 SdLazy, 17 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 27.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=85799occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 5072.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 1146 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.2ms SsaConstructionTime, 17.4ms SatisfiabilityAnalysisTime, 219.6ms InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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...