/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-NewStates.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 18:38:58,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 18:38:58,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 18:38:58,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-24 18:38:58,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-24 18:38:58,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-24 18:38:58,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-24 18:38:58,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-24 18:38:58,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-24 18:38:58,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-24 18:38:58,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-24 18:38:58,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-24 18:38:58,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 18:38:58,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 18:38:58,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 18:38:58,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 18:38:58,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 18:38:58,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 18:38:58,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 18:38:58,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 18:38:58,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 18:38:58,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 18:38:58,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 18:38:58,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 18:38:58,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-24 18:38:59,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-24 18:38:59,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-24 18:38:59,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-24 18:38:59,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-24 18:38:59,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-24 18:38:59,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-24 18:38:59,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-24 18:38:59,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-24 18:38:59,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-24 18:38:59,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-24 18:38:59,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-24 18:38:59,006 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-NewStates.epf [2021-06-24 18:38:59,021 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 18:38:59,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 18:38:59,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 18:38:59,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 18:38:59,022 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 18:38:59,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 18:38:59,023 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 18:38:59,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 18:38:59,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 18:38:59,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 18:38:59,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 18:38:59,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 18:38:59,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 18:38:59,023 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 18:38:59,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 18:38:59,024 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 18:38:59,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 18:38:59,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 18:38:59,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 18:38:59,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 18:38:59,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 18:38:59,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 18:38:59,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 18:38:59,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 18:38:59,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 18:38:59,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 18:38:59,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 18:38:59,034 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 18:38:59,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 18:38:59,034 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-24 18:38:59,034 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 18:38:59,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 18:38:59,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 18:38:59,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 18:38:59,327 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 18:38:59,328 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 18:38:59,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth05-incorrect.bpl [2021-06-24 18:38:59,329 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth05-incorrect.bpl' [2021-06-24 18:38:59,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 18:38:59,355 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 18:38:59,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 18:38:59,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 18:38:59,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 18:38:59,365 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 06:38:59" (1/1) ... [2021-06-24 18:38:59,370 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 06:38:59" (1/1) ... [2021-06-24 18:38:59,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 18:38:59,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 18:38:59,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 18:38:59,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 18:38:59,389 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 06:38:59" (1/1) ... [2021-06-24 18:38:59,389 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 06:38:59" (1/1) ... [2021-06-24 18:38:59,390 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 06:38:59" (1/1) ... [2021-06-24 18:38:59,390 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 06:38:59" (1/1) ... [2021-06-24 18:38:59,392 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 06:38:59" (1/1) ... [2021-06-24 18:38:59,394 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 06:38:59" (1/1) ... [2021-06-24 18:38:59,395 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 06:38:59" (1/1) ... [2021-06-24 18:38:59,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 18:38:59,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 18:38:59,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 18:38:59,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 18:38:59,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (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 18:38:59,453 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 18:38:59,454 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 18:38:59,454 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 18:38:59,454 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 18:38:59,454 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 18:38:59,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 18:38:59,455 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 18:38:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 18:38:59,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 18:38:59,455 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 18:38:59,653 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 18:38:59,654 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 18:38:59,655 INFO L202 PluginConnector]: Adding new model bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 06:38:59 BoogieIcfgContainer [2021-06-24 18:38:59,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 18:38:59,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 18:38:59,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 18:38:59,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 18:38:59,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/2) ... [2021-06-24 18:38:59,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194e1af5 and model type bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 06:38:59, skipping insertion in model container [2021-06-24 18:38:59,659 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 06:38:59" (2/2) ... [2021-06-24 18:38:59,660 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth05-incorrect.bpl [2021-06-24 18:38:59,663 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 18:38:59,664 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 18:38:59,664 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 18:38:59,680 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 18:38:59,722 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 18:38:59,737 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-06-24 18:38:59,749 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:38:59,750 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:38:59,750 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:38:59,750 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:38:59,750 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:38:59,750 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:38:59,750 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:38:59,750 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-24 18:39:01,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 16187 states, 14632 states have (on average 2.6865090213231273) internal successors, (39309), 16186 states have internal predecessors, (39309), 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 18:39:01,668 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-24 18:39:01,669 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/6) [2021-06-24 18:39:01,671 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-24 18:39:01,680 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:39:01,680 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:39:01,680 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:39:01,680 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:39:01,681 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:39:01,681 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:39:01,681 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:39:01,681 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork4======== [2021-06-24 18:40:07,387 INFO L276 IsEmpty]: Start isEmpty. Operand has 635815 states, 602585 states have (on average 3.6957906353460506) internal successors, (2227028), 635814 states have internal predecessors, (2227028), 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 18:40:07,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-24 18:40:07,411 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:40:07,412 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:40:07,412 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:40:07,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:40:07,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1347614714, now seen corresponding path program 1 times [2021-06-24 18:40:07,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:40:07,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44779629] [2021-06-24 18:40:07,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:40:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:40:07,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:40:07,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:40:07,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:40:07,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:40:07,649 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 18:40:07,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:40:07,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44779629] [2021-06-24 18:40:07,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44779629] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:40:07,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:40:07,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 18:40:07,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874801042] [2021-06-24 18:40:07,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 18:40:07,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:40:07,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 18:40:07,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:40:08,256 INFO L87 Difference]: Start difference. First operand has 635815 states, 602585 states have (on average 3.6957906353460506) internal successors, (2227028), 635814 states have internal predecessors, (2227028), 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 18:40:13,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:40:13,402 INFO L93 Difference]: Finished difference Result 468082 states and 1418249 transitions. [2021-06-24 18:40:13,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 18:40:13,403 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 18:40:13,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:40:14,896 INFO L225 Difference]: With dead ends: 468082 [2021-06-24 18:40:14,896 INFO L226 Difference]: Without dead ends: 232010 [2021-06-24 18:40:14,897 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:40:16,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232010 states. [2021-06-24 18:40:22,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232010 to 229079. [2021-06-24 18:40:22,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229079 states, 225167 states have (on average 2.8914849866987615) internal successors, (651067), 229078 states have internal predecessors, (651067), 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 18:40:24,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229079 states to 229079 states and 651067 transitions. [2021-06-24 18:40:24,032 INFO L78 Accepts]: Start accepts. Automaton has 229079 states and 651067 transitions. Word has length 12 [2021-06-24 18:40:24,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:40:24,032 INFO L482 AbstractCegarLoop]: Abstraction has 229079 states and 651067 transitions. [2021-06-24 18:40:24,032 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 18:40:24,033 INFO L276 IsEmpty]: Start isEmpty. Operand 229079 states and 651067 transitions. [2021-06-24 18:40:24,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-24 18:40:24,046 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:40:24,046 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:40:24,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 18:40:24,046 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:40:24,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:40:24,047 INFO L82 PathProgramCache]: Analyzing trace with hash 545860420, now seen corresponding path program 1 times [2021-06-24 18:40:24,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:40:24,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760341637] [2021-06-24 18:40:24,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:40:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:40:24,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:40:24,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:40:24,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:40:24,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:40:24,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:40:24,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:40:24,061 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 18:40:24,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:40:24,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760341637] [2021-06-24 18:40:24,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760341637] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:40:24,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:40:24,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 18:40:24,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249762291] [2021-06-24 18:40:24,062 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 18:40:24,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:40:24,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 18:40:24,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:40:24,063 INFO L87 Difference]: Start difference. First operand 229079 states and 651067 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 18:40:24,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:40:24,820 INFO L93 Difference]: Finished difference Result 89571 states and 226352 transitions. [2021-06-24 18:40:24,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 18:40:24,821 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 18:40:24,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:40:25,046 INFO L225 Difference]: With dead ends: 89571 [2021-06-24 18:40:25,047 INFO L226 Difference]: Without dead ends: 67328 [2021-06-24 18:40:25,047 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:40:25,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67328 states. [2021-06-24 18:40:26,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67328 to 64286. [2021-06-24 18:40:26,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64286 states, 61262 states have (on average 2.828686624661291) internal successors, (173291), 64285 states have internal predecessors, (173291), 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 18:40:26,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64286 states to 64286 states and 173291 transitions. [2021-06-24 18:40:26,567 INFO L78 Accepts]: Start accepts. Automaton has 64286 states and 173291 transitions. Word has length 16 [2021-06-24 18:40:26,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:40:26,567 INFO L482 AbstractCegarLoop]: Abstraction has 64286 states and 173291 transitions. [2021-06-24 18:40:26,567 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 18:40:26,568 INFO L276 IsEmpty]: Start isEmpty. Operand 64286 states and 173291 transitions. [2021-06-24 18:40:26,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-24 18:40:26,572 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:40:26,572 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:40:26,572 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 18:40:26,572 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:40:26,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:40:26,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1280172314, now seen corresponding path program 2 times [2021-06-24 18:40:26,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:40:26,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022538096] [2021-06-24 18:40:26,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:40:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 18:40:26,579 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 18:40:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 18:40:26,583 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 18:40:26,592 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-24 18:40:26,592 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-06-24 18:40:26,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 18:40:26,593 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork4 was UNSAFE (2/6) [2021-06-24 18:40:26,597 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 18:40:26,608 INFO L202 PluginConnector]: Adding new model bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 06:40:26 BasicIcfg [2021-06-24 18:40:26,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 18:40:26,609 INFO L168 Benchmark]: Toolchain (without parser) took 87253.52 ms. Allocated memory was 201.3 MB in the beginning and 6.9 GB in the end (delta: 6.7 GB). Free memory was 181.5 MB in the beginning and 3.7 GB in the end (delta: -3.5 GB). Peak memory consumption was 3.1 GB. Max. memory is 8.0 GB. [2021-06-24 18:40:26,609 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.39 ms. Allocated memory is still 201.3 MB. Free memory was 182.7 MB in the beginning and 182.6 MB in the end (delta: 83.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 18:40:26,609 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.50 ms. Allocated memory is still 201.3 MB. Free memory was 181.5 MB in the beginning and 179.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-24 18:40:26,610 INFO L168 Benchmark]: Boogie Preprocessor took 13.25 ms. Allocated memory is still 201.3 MB. Free memory was 179.7 MB in the beginning and 178.8 MB in the end (delta: 932.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 18:40:26,610 INFO L168 Benchmark]: RCFGBuilder took 258.00 ms. Allocated memory is still 201.3 MB. Free memory was 178.8 MB in the beginning and 166.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-24 18:40:26,611 INFO L168 Benchmark]: TraceAbstraction took 86951.59 ms. Allocated memory was 201.3 MB in the beginning and 6.9 GB in the end (delta: 6.7 GB). Free memory was 165.7 MB in the beginning and 3.7 GB in the end (delta: -3.5 GB). Peak memory consumption was 3.1 GB. Max. memory is 8.0 GB. [2021-06-24 18:40:26,612 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 0.39 ms. Allocated memory is still 201.3 MB. Free memory was 182.7 MB in the beginning and 182.6 MB in the end (delta: 83.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 26.50 ms. Allocated memory is still 201.3 MB. Free memory was 181.5 MB in the beginning and 179.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.25 ms. Allocated memory is still 201.3 MB. Free memory was 179.7 MB in the beginning and 178.8 MB in the end (delta: 932.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 258.00 ms. Allocated memory is still 201.3 MB. Free memory was 178.8 MB in the beginning and 166.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 86951.59 ms. Allocated memory was 201.3 MB in the beginning and 6.9 GB in the end (delta: 6.7 GB). Free memory was 165.7 MB in the beginning and 3.7 GB in the end (delta: -3.5 GB). Peak memory consumption was 3.1 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: 140267, positive: 126760, positive conditional: 126760, positive unconditional: 0, negative: 13507, negative conditional: 13507, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 131257, positive: 126760, positive conditional: 0, positive unconditional: 126760, negative: 4497, negative conditional: 0, negative unconditional: 4497, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 557, positive: 528, positive conditional: 0, positive unconditional: 528, 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: 557, positive: 500, positive conditional: 0, positive unconditional: 500, 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: 192, positive: 114, positive conditional: 0, positive unconditional: 114, negative: 78, negative conditional: 0, negative unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 131257, positive: 126232, positive conditional: 0, positive unconditional: 126232, negative: 4468, negative conditional: 0, negative unconditional: 4468, unknown: 557, unknown conditional: 0, unknown unconditional: 557] , Statistics on independence cache: Total cache size (in pairs): 557, Positive cache size: 528, Positive conditional cache size: 0, Positive unconditional cache size: 528, Negative cache size: 29, Negative conditional cache size: 0, Negative unconditional cache size: 29, Independence queries for same thread: 9010 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 10671298, positive: 9627252, positive conditional: 9627252, positive unconditional: 0, negative: 1044046, negative conditional: 1044046, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 10092283, positive: 9627252, positive conditional: 0, positive unconditional: 9627252, negative: 465031, negative conditional: 0, negative unconditional: 465031, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1042, positive: 972, positive conditional: 0, positive unconditional: 972, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1042, positive: 919, positive conditional: 0, positive unconditional: 919, negative: 123, negative conditional: 0, negative unconditional: 123, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 123, positive: 53, positive conditional: 0, positive unconditional: 53, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 265, positive: 139, positive conditional: 0, positive unconditional: 139, negative: 127, negative conditional: 0, negative unconditional: 127, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 10092283, positive: 9626280, positive conditional: 0, positive unconditional: 9626280, negative: 464961, negative conditional: 0, negative unconditional: 464961, unknown: 1042, unknown conditional: 0, unknown unconditional: 1042] , Statistics on independence cache: Total cache size (in pairs): 1042, Positive cache size: 972, Positive conditional cache size: 0, Positive unconditional cache size: 972, Negative cache size: 70, Negative conditional cache size: 0, Negative unconditional cache size: 70, Independence queries for same thread: 579015 - 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] [L47] 5 pendingIo := pendingIo + 1; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L70] 1 assume stoppingEvent; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L71] 1 stopped := true; 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: 1921.2ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 125.9ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1792.3ms, PartialOrderReductionTime: 1783.5ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16187occurred 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: 84912.5ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 2069.4ms, AutomataDifference: 8227.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 63678.0ms, PartialOrderReductionTime: 63675.7ms, HoareTripleCheckerStatistics: 110 SDtfs, 54 SDslu, 55 SDs, 0 SdLazy, 17 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=635815occurred 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: 10645.8ms AutomataMinimizationTime, 2 MinimizatonAttempts, 5973 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.2ms SsaConstructionTime, 69.1ms SatisfiabilityAnalysisTime, 68.4ms 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...