/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe-Random42.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 20:18:19,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 20:18:19,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 20:18:19,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-24 20:18:19,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-24 20:18:19,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-24 20:18:19,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-24 20:18:19,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-24 20:18:19,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-24 20:18:19,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-24 20:18:19,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-24 20:18:19,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-24 20:18:19,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 20:18:19,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 20:18:19,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 20:18:19,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 20:18:19,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 20:18:19,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 20:18:19,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 20:18:19,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 20:18:19,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 20:18:19,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 20:18:19,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 20:18:19,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 20:18:19,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-24 20:18:19,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-24 20:18:19,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-24 20:18:19,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-24 20:18:19,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-24 20:18:19,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-24 20:18:19,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-24 20:18:19,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-24 20:18:19,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-24 20:18:19,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-24 20:18:19,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-24 20:18:19,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-24 20:18:19,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-24 20:18:19,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-24 20:18:19,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-24 20:18:19,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-24 20:18:19,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-24 20:18:19,121 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe-Random42.epf [2021-06-24 20:18:19,163 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 20:18:19,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 20:18:19,163 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 20:18:19,163 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 20:18:19,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 20:18:19,166 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 20:18:19,166 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 20:18:19,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 20:18:19,166 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 20:18:19,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 20:18:19,167 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 20:18:19,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 20:18:19,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 20:18:19,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 20:18:19,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 20:18:19,167 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 20:18:19,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 20:18:19,168 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 20:18:19,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 20:18:19,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 20:18:19,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 20:18:19,168 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 20:18:19,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 20:18:19,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 20:18:19,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 20:18:19,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 20:18:19,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 20:18:19,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 20:18:19,169 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-24 20:18:19,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 20:18:19,169 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 20:18:19,169 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-24 20:18:19,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 20:18:19,170 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-24 20:18:19,170 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-24 20:18:19,170 INFO L138 SettingsManager]: * Random seed used by POR DFS order=42 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 20:18:19,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 20:18:19,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 20:18:19,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 20:18:19,429 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 20:18:19,430 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 20:18:19,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth02-incorrect.bpl [2021-06-24 20:18:19,431 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth02-incorrect.bpl' [2021-06-24 20:18:19,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 20:18:19,457 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 20:18:19,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 20:18:19,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 20:18:19,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 20:18:19,467 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 08:18:19" (1/1) ... [2021-06-24 20:18:19,473 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 08:18:19" (1/1) ... [2021-06-24 20:18:19,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 20:18:19,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 20:18:19,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 20:18:19,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 20:18:19,495 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 08:18:19" (1/1) ... [2021-06-24 20:18:19,496 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 08:18:19" (1/1) ... [2021-06-24 20:18:19,496 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 08:18:19" (1/1) ... [2021-06-24 20:18:19,496 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 08:18:19" (1/1) ... [2021-06-24 20:18:19,498 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 08:18:19" (1/1) ... [2021-06-24 20:18:19,502 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 08:18:19" (1/1) ... [2021-06-24 20:18:19,502 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 08:18:19" (1/1) ... [2021-06-24 20:18:19,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 20:18:19,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 20:18:19,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 20:18:19,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 20:18:19,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:18:19" (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 20:18:19,555 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 20:18:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 20:18:19,556 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 20:18:19,556 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 20:18:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 20:18:19,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 20:18:19,556 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 20:18:19,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 20:18:19,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 20:18:19,558 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 20:18:19,715 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 20:18:19,715 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 20:18:19,717 INFO L202 PluginConnector]: Adding new model bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:18:19 BoogieIcfgContainer [2021-06-24 20:18:19,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 20:18:19,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 20:18:19,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 20:18:19,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 20:18:19,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:18:19" (1/2) ... [2021-06-24 20:18:19,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fccc270 and model type bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:18:19, skipping insertion in model container [2021-06-24 20:18:19,721 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 08:18:19" (2/2) ... [2021-06-24 20:18:19,722 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth02-incorrect.bpl [2021-06-24 20:18:19,726 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 20:18:19,726 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 20:18:19,726 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 20:18:19,726 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 20:18:19,772 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 20:18:19,788 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 20:18:19,822 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 20:18:19,822 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 20:18:19,822 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 20:18:19,823 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 20:18:19,823 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 20:18:19,823 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 20:18:19,823 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 20:18:19,823 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-24 20:18:19,930 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/3) [2021-06-24 20:18:19,931 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 20:18:19,938 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 20:18:19,938 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 20:18:19,938 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 20:18:19,938 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 20:18:19,938 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 20:18:19,938 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 20:18:19,939 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 20:18:19,939 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork2======== [2021-06-24 20:18:19,966 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:18:19,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:18:19,970 INFO L82 PathProgramCache]: Analyzing trace with hash 2077017723, now seen corresponding path program 1 times [2021-06-24 20:18:19,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:18:19,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824929347] [2021-06-24 20:18:19,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:18:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:18:20,134 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 20:18:20,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:18:20,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824929347] [2021-06-24 20:18:20,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824929347] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:18:20,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:18:20,135 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 20:18:20,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798329022] [2021-06-24 20:18:20,138 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:18:20,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:18:20,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:18:20,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:18:20,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:18:20,151 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:18:20,152 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) 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 20:18:20,152 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:18:20,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:18:20,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 20:18:20,212 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:18:20,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:18:20,223 INFO L82 PathProgramCache]: Analyzing trace with hash 780098874, now seen corresponding path program 1 times [2021-06-24 20:18:20,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:18:20,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626712827] [2021-06-24 20:18:20,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:18:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:18:20,253 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 20:18:20,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:18:20,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626712827] [2021-06-24 20:18:20,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626712827] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:18:20,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:18:20,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 20:18:20,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481523595] [2021-06-24 20:18:20,255 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:18:20,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:18:20,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:18:20,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:18:20,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:18:20,256 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:18:20,256 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 20:18:20,256 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:18:20,256 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:18:20,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:18:20,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:18:20,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 20:18:20,488 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:18:20,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:18:20,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1680178855, now seen corresponding path program 1 times [2021-06-24 20:18:20,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:18:20,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801970383] [2021-06-24 20:18:20,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:18:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 20:18:20,558 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 20:18:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 20:18:20,576 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 20:18:20,609 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-24 20:18:20,610 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-06-24 20:18:20,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 20:18:20,627 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork2 was UNSAFE (2/3) [2021-06-24 20:18:20,629 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 20:18:20,679 INFO L202 PluginConnector]: Adding new model bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:18:20 BasicIcfg [2021-06-24 20:18:20,679 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 20:18:20,680 INFO L168 Benchmark]: Toolchain (without parser) took 1223.40 ms. Allocated memory is still 195.0 MB. Free memory was 174.8 MB in the beginning and 151.1 MB in the end (delta: 23.7 MB). Peak memory consumption was 24.8 MB. Max. memory is 8.0 GB. [2021-06-24 20:18:20,681 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 195.0 MB. Free memory is still 175.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 20:18:20,681 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.65 ms. Allocated memory is still 195.0 MB. Free memory was 174.7 MB in the beginning and 173.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-24 20:18:20,682 INFO L168 Benchmark]: Boogie Preprocessor took 13.35 ms. Allocated memory is still 195.0 MB. Free memory was 172.9 MB in the beginning and 172.0 MB in the end (delta: 836.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 20:18:20,683 INFO L168 Benchmark]: RCFGBuilder took 212.58 ms. Allocated memory is still 195.0 MB. Free memory was 171.9 MB in the beginning and 159.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-06-24 20:18:20,683 INFO L168 Benchmark]: TraceAbstraction took 960.83 ms. Allocated memory is still 195.0 MB. Free memory was 159.2 MB in the beginning and 151.1 MB in the end (delta: 8.2 MB). Peak memory consumption was 9.1 MB. Max. memory is 8.0 GB. [2021-06-24 20:18:20,684 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 195.0 MB. Free memory is still 175.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 31.65 ms. Allocated memory is still 195.0 MB. Free memory was 174.7 MB in the beginning and 173.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.35 ms. Allocated memory is still 195.0 MB. Free memory was 172.9 MB in the beginning and 172.0 MB in the end (delta: 836.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 212.58 ms. Allocated memory is still 195.0 MB. Free memory was 171.9 MB in the beginning and 159.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 960.83 ms. Allocated memory is still 195.0 MB. Free memory was 159.2 MB in the beginning and 151.1 MB in the end (delta: 8.2 MB). Peak memory consumption was 9.1 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: 73, positive: 47, positive conditional: 47, positive unconditional: 0, negative: 26, negative conditional: 26, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 55, positive: 47, positive conditional: 47, positive unconditional: 0, negative: 8, negative conditional: 8, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 55, positive: 47, positive conditional: 0, positive unconditional: 47, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 46, positive: 40, positive conditional: 0, positive unconditional: 40, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 46, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 9, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 9, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 55, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 55, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 46, unknown conditional: 0, unknown unconditional: 46] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 ], Maximal queried relation: 0, Independence queries for same thread: 18 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1072, positive: 920, positive conditional: 920, positive unconditional: 0, negative: 152, negative conditional: 152, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 968, positive: 920, positive conditional: 920, positive unconditional: 0, negative: 48, negative conditional: 48, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 968, positive: 920, positive conditional: 0, positive unconditional: 920, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 136, positive: 127, positive conditional: 0, positive unconditional: 127, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 136, positive: 115, positive conditional: 0, positive unconditional: 115, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 21, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 23, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 11, negative conditional: 2, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 109, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 61, negative conditional: 3, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 968, positive: 793, positive conditional: 0, positive unconditional: 793, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 136, unknown conditional: 0, unknown unconditional: 136] , Statistics on independence cache: Total cache size (in pairs): 138, Positive cache size: 127, Positive conditional cache size: 0, Positive unconditional cache size: 127, Negative cache size: 11, Negative conditional cache size: 2, Negative unconditional cache size: 9, SemanticConditionEliminator.Independence Queries: [ total: 90, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 90, negative conditional: 9, negative unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 90, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 90, negative conditional: 9, negative unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 23, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 11, negative conditional: 2, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 109, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 61, negative conditional: 3, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 90, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 88, negative conditional: 7, negative unconditional: 81, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 138, Positive cache size: 127, Positive conditional cache size: 0, Positive unconditional cache size: 127, Negative cache size: 11, Negative conditional cache size: 2, Negative unconditional cache size: 9, Eliminated conditions: 81, SemanticConditionEliminator.Independence Queries: [ total: 90, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 90, negative conditional: 9, negative unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 90, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 90, negative conditional: 9, negative unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 23, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 11, negative conditional: 2, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 109, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 61, negative conditional: 3, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 90, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 88, negative conditional: 7, negative unconditional: 81, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 138, Positive cache size: 127, Positive conditional cache size: 0, Positive unconditional cache size: 127, Negative cache size: 11, Negative conditional cache size: 2, Negative unconditional cache size: 9, Eliminated conditions: 81 ], Maximal queried relation: 2, Independence queries for same thread: 104 - 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] [L44] 3 pendingIo := pendingIo + 1; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L43] 2 assume !stoppingFlag; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L33] 3 assert !stopped; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L52] 3 pendingIo := pendingIo - 1; [L53] COND FALSE 3 !(pendingIo == 0) VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L43] 3 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L44] 3 pendingIo := pendingIo + 1; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L33] 3 assert !stopped; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L44] 2 pendingIo := pendingIo + 1; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L33] 2 assert !stopped; VAL [pendingIo=3, stopped=false, stoppingEvent=false, stoppingFlag=false] [L52] 2 pendingIo := pendingIo - 1; [L53] COND FALSE 2 !(pendingIo == 0) VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L52] 3 pendingIo := pendingIo - 1; [L53] COND FALSE 3 !(pendingIo == 0) VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L43] 3 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L44] 3 pendingIo := pendingIo + 1; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L33] 3 assert !stopped; VAL [pendingIo=2, stopped=false, stoppingEvent=false, stoppingFlag=false] [L52] 3 pendingIo := pendingIo - 1; [L53] COND FALSE 3 !(pendingIo == 0) 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: 128.9ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.2ms, PartialOrderReductionTime: 89.7ms, 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: 693.9ms, OverallIterations: 3, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.1ms, PartialOrderReductionTime: 317.6ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.3ms SsaConstructionTime, 59.3ms SatisfiabilityAnalysisTime, 81.9ms InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 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...