/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe-Random521.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth02-incorrect.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 19:22:32,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 19:22:32,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 19:22:32,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-24 19:22:32,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-24 19:22:32,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-24 19:22:32,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-24 19:22:32,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-24 19:22:32,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-24 19:22:32,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-24 19:22:32,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-24 19:22:32,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-24 19:22:32,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 19:22:32,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 19:22:32,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 19:22:32,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 19:22:32,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 19:22:32,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 19:22:32,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 19:22:32,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 19:22:32,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 19:22:32,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 19:22:32,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 19:22:32,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 19:22:32,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-24 19:22:32,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-24 19:22:32,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-24 19:22:32,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-24 19:22:32,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-24 19:22:32,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-24 19:22:32,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-24 19:22:32,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-24 19:22:32,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-24 19:22:32,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-24 19:22:32,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-24 19:22:32,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-24 19:22:32,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-24 19:22:32,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-24 19:22:32,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-24 19:22:32,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-24 19:22:32,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-24 19:22:32,156 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe-Random521.epf [2021-06-24 19:22:32,171 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 19:22:32,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 19:22:32,171 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 19:22:32,172 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 19:22:32,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 19:22:32,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 19:22:32,173 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 19:22:32,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 19:22:32,173 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 19:22:32,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 19:22:32,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 19:22:32,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 19:22:32,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 19:22:32,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 19:22:32,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 19:22:32,174 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 19:22:32,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 19:22:32,174 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 19:22:32,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 19:22:32,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 19:22:32,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 19:22:32,175 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 19:22:32,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 19:22:32,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 19:22:32,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 19:22:32,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 19:22:32,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 19:22:32,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 19:22:32,176 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-24 19:22:32,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 19:22:32,176 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 19:22:32,176 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-24 19:22:32,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 19:22:32,176 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-24 19:22:32,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-24 19:22:32,177 INFO L138 SettingsManager]: * Random seed used by POR DFS order=521 WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 19:22:32,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 19:22:32,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 19:22:32,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 19:22:32,439 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 19:22:32,442 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 19:22:32,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth02-incorrect.bpl [2021-06-24 19:22:32,443 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth02-incorrect.bpl' [2021-06-24 19:22:32,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 19:22:32,470 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 19:22:32,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 19:22:32,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 19:22:32,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 19:22:32,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:32" (1/1) ... [2021-06-24 19:22:32,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:32" (1/1) ... [2021-06-24 19:22:32,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 19:22:32,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 19:22:32,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 19:22:32,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 19:22:32,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:32" (1/1) ... [2021-06-24 19:22:32,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:32" (1/1) ... [2021-06-24 19:22:32,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:32" (1/1) ... [2021-06-24 19:22:32,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:32" (1/1) ... [2021-06-24 19:22:32,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:32" (1/1) ... [2021-06-24 19:22:32,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:32" (1/1) ... [2021-06-24 19:22:32,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:32" (1/1) ... [2021-06-24 19:22:32,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 19:22:32,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 19:22:32,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 19:22:32,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 19:22:32,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 19:22:32,586 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 19:22:32,586 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 19:22:32,586 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 19:22:32,586 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 19:22:32,587 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 19:22:32,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 19:22:32,588 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 19:22:32,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 19:22:32,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 19:22:32,589 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-24 19:22:32,783 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 19:22:32,784 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 19:22:32,785 INFO L202 PluginConnector]: Adding new model bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 07:22:32 BoogieIcfgContainer [2021-06-24 19:22:32,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 19:22:32,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 19:22:32,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 19:22:32,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 19:22:32,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:22:32" (1/2) ... [2021-06-24 19:22:32,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78804760 and model type bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 07:22:32, skipping insertion in model container [2021-06-24 19:22:32,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 07:22:32" (2/2) ... [2021-06-24 19:22:32,790 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth02-incorrect.bpl [2021-06-24 19:22:32,794 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 19:22:32,794 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 19:22:32,794 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 19:22:32,795 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 19:22:32,832 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 19:22:32,851 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-24 19:22:32,884 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 19:22:32,884 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 19:22:32,884 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 19:22:32,884 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 19:22:32,884 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 19:22:32,885 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 19:22:32,885 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 19:22:32,885 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-24 19:22:32,979 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/3) [2021-06-24 19:22:32,981 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-24 19:22:32,998 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 19:22:32,998 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 19:22:32,998 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 19:22:32,998 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 19:22:32,998 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 19:22:32,998 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 19:22:32,998 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 19:22:32,998 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork2======== [2021-06-24 19:22:33,028 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:22:33,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:22:33,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1548202065, now seen corresponding path program 1 times [2021-06-24 19:22:33,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:22:33,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899939248] [2021-06-24 19:22:33,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:22:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:22:33,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 19:22:33,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:22:33,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899939248] [2021-06-24 19:22:33,115 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899939248] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:22:33,115 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:22:33,115 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 19:22:33,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020200344] [2021-06-24 19:22:33,118 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 19:22:33,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:22:33,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 19:22:33,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 19:22:33,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:22:33,128 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:22:33,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 19:22:33,128 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:22:33,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:33,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 19:22:33,157 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:22:33,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:22:33,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1586532031, now seen corresponding path program 1 times [2021-06-24 19:22:33,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:22:33,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864962779] [2021-06-24 19:22:33,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:22:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:22:33,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 19:22:33,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:22:33,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864962779] [2021-06-24 19:22:33,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864962779] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:22:33,169 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:22:33,169 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 19:22:33,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004845155] [2021-06-24 19:22:33,170 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 19:22:33,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:22:33,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 19:22:33,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 19:22:33,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:22:33,171 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:22:33,171 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 19:22:33,171 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:33,172 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:22:33,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:33,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:33,198 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 19:22:33,198 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:22:33,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:22:33,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1903826049, now seen corresponding path program 1 times [2021-06-24 19:22:33,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:22:33,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040037585] [2021-06-24 19:22:33,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:22:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:22:33,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 19:22:33,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:22:33,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040037585] [2021-06-24 19:22:33,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040037585] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:22:33,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:22:33,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 19:22:33,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232079910] [2021-06-24 19:22:33,248 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 19:22:33,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:22:33,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 19:22:33,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 19:22:33,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:22:33,249 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:22:33,249 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 19:22:33,249 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:33,249 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:33,249 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:22:33,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:33,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:22:33,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 19:22:33,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 19:22:33,327 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:22:33,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:22:33,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1616938719, now seen corresponding path program 2 times [2021-06-24 19:22:33,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:22:33,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006650359] [2021-06-24 19:22:33,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:22:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 19:22:33,333 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 19:22:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 19:22:33,337 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 19:22:33,346 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-24 19:22:33,347 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-06-24 19:22:33,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-24 19:22:33,348 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork2 was UNSAFE (2/3) [2021-06-24 19:22:33,350 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 19:22:33,358 INFO L202 PluginConnector]: Adding new model bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 07:22:33 BasicIcfg [2021-06-24 19:22:33,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 19:22:33,359 INFO L168 Benchmark]: Toolchain (without parser) took 889.00 ms. Allocated memory is still 196.1 MB. Free memory was 175.3 MB in the beginning and 147.5 MB in the end (delta: 27.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 8.0 GB. [2021-06-24 19:22:33,359 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 196.1 MB. Free memory is still 176.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 19:22:33,360 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.21 ms. Allocated memory is still 196.1 MB. Free memory was 175.1 MB in the beginning and 173.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-24 19:22:33,360 INFO L168 Benchmark]: Boogie Preprocessor took 13.66 ms. Allocated memory is still 196.1 MB. Free memory was 173.3 MB in the beginning and 172.5 MB in the end (delta: 869.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 19:22:33,361 INFO L168 Benchmark]: RCFGBuilder took 269.30 ms. Allocated memory is still 196.1 MB. Free memory was 172.5 MB in the beginning and 160.1 MB in the end (delta: 12.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-06-24 19:22:33,361 INFO L168 Benchmark]: TraceAbstraction took 572.15 ms. Allocated memory is still 196.1 MB. Free memory was 159.6 MB in the beginning and 147.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. [2021-06-24 19:22:33,362 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 0.14 ms. Allocated memory is still 196.1 MB. Free memory is still 176.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 29.21 ms. Allocated memory is still 196.1 MB. Free memory was 175.1 MB in the beginning and 173.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.66 ms. Allocated memory is still 196.1 MB. Free memory was 173.3 MB in the beginning and 172.5 MB in the end (delta: 869.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 269.30 ms. Allocated memory is still 196.1 MB. Free memory was 172.5 MB in the beginning and 160.1 MB in the end (delta: 12.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 572.15 ms. Allocated memory is still 196.1 MB. Free memory was 159.6 MB in the beginning and 147.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 45, positive: 31, positive conditional: 31, positive unconditional: 0, negative: 14, negative conditional: 14, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 35, positive: 31, positive conditional: 31, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 35, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 35, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 35, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 56, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 35, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 35, unknown conditional: 0, unknown unconditional: 35] , Statistics on independence cache: Total cache size (in pairs): 35, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 ], Maximal queried relation: 0, Independence queries for same thread: 10 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 445, positive: 393, positive conditional: 393, positive unconditional: 0, negative: 52, negative conditional: 52, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 411, positive: 393, positive conditional: 393, positive unconditional: 0, negative: 18, negative conditional: 18, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 411, positive: 393, positive conditional: 0, positive unconditional: 393, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 60, positive: 55, positive conditional: 0, positive unconditional: 55, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 60, positive: 53, positive conditional: 0, positive unconditional: 53, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 10, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 8, negative conditional: 3, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 45, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 39, negative conditional: 5, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 411, positive: 338, positive conditional: 0, positive unconditional: 338, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 60, unknown conditional: 0, unknown unconditional: 60] , Statistics on independence cache: Total cache size (in pairs): 63, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, Negative cache size: 8, Negative conditional cache size: 3, Negative unconditional cache size: 5, SemanticConditionEliminator.Independence Queries: [ total: 38, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 38, negative conditional: 5, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 38, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 38, negative conditional: 5, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 10, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 8, negative conditional: 3, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 45, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 39, negative conditional: 5, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 38, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 35, negative conditional: 2, negative unconditional: 33, unknown: 3, unknown conditional: 3, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 63, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, Negative cache size: 8, Negative conditional cache size: 3, Negative unconditional cache size: 5, Eliminated conditions: 33, SemanticConditionEliminator.Independence Queries: [ total: 38, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 38, negative conditional: 5, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 38, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 38, negative conditional: 5, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 10, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 8, negative conditional: 3, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 45, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 39, negative conditional: 5, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 38, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 35, negative conditional: 2, negative unconditional: 33, unknown: 3, unknown conditional: 3, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 63, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, Negative cache size: 8, Negative conditional cache size: 3, Negative unconditional cache size: 5, Eliminated conditions: 33, SemanticConditionEliminator.Independence Queries: [ total: 38, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 38, negative conditional: 5, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 38, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 38, negative conditional: 5, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 10, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 8, negative conditional: 3, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 45, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 39, negative conditional: 5, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 38, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 35, negative conditional: 2, negative unconditional: 33, unknown: 3, unknown conditional: 3, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 63, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, Negative cache size: 8, Negative conditional cache size: 3, Negative unconditional cache size: 5, Eliminated conditions: 33 ], Maximal queried relation: 3, Independence queries for same thread: 34 - CounterExampleResult [Line: 33]: 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] [L43] 3 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L65] 1 stoppingFlag := true; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L75] 1 pendingIo := pendingIo - 1; [L76] COND TRUE 1 pendingIo == 0 [L77] 1 stoppingEvent := true; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L44] 3 pendingIo := pendingIo + 1; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L67] 1 assume stoppingEvent; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L68] 1 stopped := true; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] [L33] 3 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 6 procedures, 42 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 116.1ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.4ms, PartialOrderReductionTime: 82.7ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: DeviceThreadThread1of1ForFork2 with 1 thread instances CFG has 6 procedures, 42 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 354.3ms, OverallIterations: 4, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.1ms, PartialOrderReductionTime: 160.1ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.9ms SsaConstructionTime, 20.1ms SatisfiabilityAnalysisTime, 76.6ms InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 99 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...