/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-NewStates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth04-incorrect.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 18:38:58,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 18:38:58,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 18:38:58,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-24 18:38:58,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-24 18:38:58,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-24 18:38:58,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-24 18:38:58,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-24 18:38:58,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-24 18:38:58,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-24 18:38:58,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-24 18:38:58,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-24 18:38:58,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 18:38:58,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 18:38:58,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 18:38:59,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 18:38:59,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 18:38:59,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 18:38:59,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 18:38:59,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 18:38:59,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 18:38:59,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 18:38:59,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 18:38:59,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 18:38:59,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-24 18:38:59,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-24 18:38:59,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-24 18:38:59,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-24 18:38:59,020 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-NewStates.epf [2021-06-24 18:38:59,035 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 18:38:59,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 18:38:59,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 18:38:59,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 18:38:59,036 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 18:38:59,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 18:38:59,037 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 18:38:59,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 18:38:59,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 18:38:59,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 18:38:59,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 18:38:59,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 18:38:59,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 18:38:59,037 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 18:38:59,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 18:38:59,038 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 18:38:59,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 18:38:59,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 18:38:59,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 18:38:59,038 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 18:38:59,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 18:38:59,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 18:38:59,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 18:38:59,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 18:38:59,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 18:38:59,039 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 18:38:59,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 18:38:59,039 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 18:38:59,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 18:38:59,039 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-24 18:38:59,039 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 18:38:59,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 18:38:59,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 18:38:59,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 18:38:59,312 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 18:38:59,314 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 18:38:59,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth04-incorrect.bpl [2021-06-24 18:38:59,315 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth04-incorrect.bpl' [2021-06-24 18:38:59,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 18:38:59,336 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 18:38:59,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 18:38:59,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 18:38:59,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 18:38:59,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:38:59,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:38:59,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 18:38:59,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 18:38:59,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 18:38:59,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 18:38:59,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:38:59,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:38:59,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:38:59,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:38:59,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:38:59,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:38:59,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:38:59,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 18:38:59,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 18:38:59,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 18:38:59,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 18:38:59,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 18:38:59,494 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 18:38:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 18:38:59,495 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 18:38:59,496 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 18:38:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 18:38:59,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 18:38:59,496 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 18:38:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 18:38:59,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 18:38:59,497 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-24 18:38:59,648 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 18:38:59,649 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 18:38:59,650 INFO L202 PluginConnector]: Adding new model bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 06:38:59 BoogieIcfgContainer [2021-06-24 18:38:59,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 18:38:59,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 18:38:59,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 18:38:59,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 18:38:59,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/2) ... [2021-06-24 18:38:59,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686b9130 and model type bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 06:38:59, skipping insertion in model container [2021-06-24 18:38:59,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 06:38:59" (2/2) ... [2021-06-24 18:38:59,656 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth04-incorrect.bpl [2021-06-24 18:38:59,660 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 18:38:59,660 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 18:38:59,660 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 18:38:59,661 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 18:38:59,686 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 18:38:59,723 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-24 18:38:59,737 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:38:59,737 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:38:59,737 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:38:59,737 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:38:59,737 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:38:59,737 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:38:59,738 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:38:59,744 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-24 18:39:00,182 INFO L276 IsEmpty]: Start isEmpty. Operand has 2236 states, 1977 states have (on average 2.152250885179565) internal successors, (4255), 2235 states have internal predecessors, (4255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:39:00,211 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-24 18:39:00,212 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/5) [2021-06-24 18:39:00,213 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-24 18:39:00,218 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:39:00,218 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:39:00,218 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:39:00,218 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:39:00,218 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:39:00,219 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:39:00,219 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:39:00,223 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork4======== [2021-06-24 18:39:04,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 82176 states, 76214 states have (on average 3.1737607263757317) internal successors, (241885), 82175 states have internal predecessors, (241885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:39:04,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-24 18:39:04,053 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:39:04,053 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:39:04,054 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:39:04,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:39:04,058 INFO L82 PathProgramCache]: Analyzing trace with hash -797775574, now seen corresponding path program 1 times [2021-06-24 18:39:04,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:39:04,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027747441] [2021-06-24 18:39:04,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:39:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:39:04,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:04,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:39:04,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:04,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:39:04,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 18:39:04,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:39:04,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027747441] [2021-06-24 18:39:04,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027747441] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:39:04,329 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:39:04,329 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 18:39:04,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413662106] [2021-06-24 18:39:04,331 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 18:39:04,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:39:04,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 18:39:04,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:39:04,427 INFO L87 Difference]: Start difference. First operand has 82176 states, 76214 states have (on average 3.1737607263757317) internal successors, (241885), 82175 states have internal predecessors, (241885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:39:05,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:39:05,226 INFO L93 Difference]: Finished difference Result 64375 states and 165351 transitions. [2021-06-24 18:39:05,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 18:39:05,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-06-24 18:39:05,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:39:05,538 INFO L225 Difference]: With dead ends: 64375 [2021-06-24 18:39:05,538 INFO L226 Difference]: Without dead ends: 33765 [2021-06-24 18:39:05,539 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:39:05,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33765 states. [2021-06-24 18:39:06,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33765 to 33374. [2021-06-24 18:39:06,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33374 states, 32687 states have (on average 2.507510631137761) internal successors, (81963), 33373 states have internal predecessors, (81963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:39:07,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33374 states to 33374 states and 81963 transitions. [2021-06-24 18:39:07,102 INFO L78 Accepts]: Start accepts. Automaton has 33374 states and 81963 transitions. Word has length 12 [2021-06-24 18:39:07,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:39:07,111 INFO L482 AbstractCegarLoop]: Abstraction has 33374 states and 81963 transitions. [2021-06-24 18:39:07,111 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:39:07,112 INFO L276 IsEmpty]: Start isEmpty. Operand 33374 states and 81963 transitions. [2021-06-24 18:39:07,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-24 18:39:07,122 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:39:07,122 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:39:07,122 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 18:39:07,123 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:39:07,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:39:07,124 INFO L82 PathProgramCache]: Analyzing trace with hash 511304936, now seen corresponding path program 1 times [2021-06-24 18:39:07,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:39:07,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282980253] [2021-06-24 18:39:07,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:39:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:39:07,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:07,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-24 18:39:07,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:07,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:39:07,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:07,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:39:07,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:07,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:39:07,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:07,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:39:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 18:39:07,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:39:07,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282980253] [2021-06-24 18:39:07,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282980253] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:39:07,204 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:39:07,204 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 18:39:07,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084416794] [2021-06-24 18:39:07,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 18:39:07,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:39:07,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 18:39:07,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 18:39:07,206 INFO L87 Difference]: Start difference. First operand 33374 states and 81963 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:39:07,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:39:07,707 INFO L93 Difference]: Finished difference Result 55310 states and 138003 transitions. [2021-06-24 18:39:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 18:39:07,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-24 18:39:07,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:39:07,893 INFO L225 Difference]: With dead ends: 55310 [2021-06-24 18:39:07,894 INFO L226 Difference]: Without dead ends: 54151 [2021-06-24 18:39:07,895 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 13.9ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 18:39:08,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54151 states. [2021-06-24 18:39:08,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54151 to 51675. [2021-06-24 18:39:09,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51675 states, 50988 states have (on average 2.5388522789676) internal successors, (129451), 51674 states have internal predecessors, (129451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:39:09,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51675 states to 51675 states and 129451 transitions. [2021-06-24 18:39:09,395 INFO L78 Accepts]: Start accepts. Automaton has 51675 states and 129451 transitions. Word has length 16 [2021-06-24 18:39:09,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:39:09,396 INFO L482 AbstractCegarLoop]: Abstraction has 51675 states and 129451 transitions. [2021-06-24 18:39:09,396 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:39:09,396 INFO L276 IsEmpty]: Start isEmpty. Operand 51675 states and 129451 transitions. [2021-06-24 18:39:09,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-24 18:39:09,424 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:39:09,424 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:39:09,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 18:39:09,424 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:39:09,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:39:09,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1141384586, now seen corresponding path program 2 times [2021-06-24 18:39:09,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:39:09,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285481389] [2021-06-24 18:39:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:39:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 18:39:09,443 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 18:39:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 18:39:09,447 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 18:39:09,459 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-24 18:39:09,459 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-06-24 18:39:09,459 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 18:39:09,459 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork4 was UNSAFE (2/5) [2021-06-24 18:39:09,461 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 18:39:09,471 INFO L202 PluginConnector]: Adding new model bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 06:39:09 BasicIcfg [2021-06-24 18:39:09,471 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 18:39:09,472 INFO L168 Benchmark]: Toolchain (without parser) took 10136.43 ms. Allocated memory was 174.1 MB in the beginning and 3.9 GB in the end (delta: 3.8 GB). Free memory was 153.8 MB in the beginning and 3.3 GB in the end (delta: -3.2 GB). Peak memory consumption was 577.1 MB. Max. memory is 8.0 GB. [2021-06-24 18:39:09,473 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 174.1 MB. Free memory is still 154.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 18:39:09,476 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.11 ms. Allocated memory is still 174.1 MB. Free memory was 153.8 MB in the beginning and 151.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-24 18:39:09,477 INFO L168 Benchmark]: Boogie Preprocessor took 14.09 ms. Allocated memory is still 174.1 MB. Free memory was 151.8 MB in the beginning and 151.0 MB in the end (delta: 851.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 18:39:09,478 INFO L168 Benchmark]: RCFGBuilder took 271.97 ms. Allocated memory is still 174.1 MB. Free memory was 151.0 MB in the beginning and 138.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-06-24 18:39:09,478 INFO L168 Benchmark]: TraceAbstraction took 9818.82 ms. Allocated memory was 174.1 MB in the beginning and 3.9 GB in the end (delta: 3.8 GB). Free memory was 138.4 MB in the beginning and 3.3 GB in the end (delta: -3.2 GB). Peak memory consumption was 561.4 MB. Max. memory is 8.0 GB. [2021-06-24 18:39:09,482 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 174.1 MB. Free memory is still 154.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 27.11 ms. Allocated memory is still 174.1 MB. Free memory was 153.8 MB in the beginning and 151.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.09 ms. Allocated memory is still 174.1 MB. Free memory was 151.8 MB in the beginning and 151.0 MB in the end (delta: 851.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 271.97 ms. Allocated memory is still 174.1 MB. Free memory was 151.0 MB in the beginning and 138.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 9818.82 ms. Allocated memory was 174.1 MB in the beginning and 3.9 GB in the end (delta: 3.8 GB). Free memory was 138.4 MB in the beginning and 3.3 GB in the end (delta: -3.2 GB). Peak memory consumption was 561.4 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: 11412, positive: 10156, positive conditional: 10156, positive unconditional: 0, negative: 1256, negative conditional: 1256, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 10559, positive: 10156, positive conditional: 0, positive unconditional: 10156, negative: 403, negative conditional: 0, negative unconditional: 403, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 313, positive: 297, positive conditional: 0, positive unconditional: 297, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 313, positive: 279, positive conditional: 0, positive unconditional: 279, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 34, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 168, positive: 90, positive conditional: 0, positive unconditional: 90, negative: 78, negative conditional: 0, negative unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 10559, positive: 9859, positive conditional: 0, positive unconditional: 9859, negative: 387, negative conditional: 0, negative unconditional: 387, unknown: 313, unknown conditional: 0, unknown unconditional: 313] , Statistics on independence cache: Total cache size (in pairs): 313, Positive cache size: 297, Positive conditional cache size: 0, Positive unconditional cache size: 297, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Independence queries for same thread: 853 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 937380, positive: 841568, positive conditional: 841568, positive unconditional: 0, negative: 95812, negative conditional: 95812, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 883500, positive: 841568, positive conditional: 0, positive unconditional: 841568, negative: 41932, negative conditional: 0, negative unconditional: 41932, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 691, positive: 643, positive conditional: 0, positive unconditional: 643, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 691, positive: 606, positive conditional: 0, positive unconditional: 606, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 85, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 165, positive: 79, positive conditional: 0, positive unconditional: 79, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 883500, positive: 840925, positive conditional: 0, positive unconditional: 840925, negative: 41884, negative conditional: 0, negative unconditional: 41884, unknown: 691, unknown conditional: 0, unknown unconditional: 691] , Statistics on independence cache: Total cache size (in pairs): 691, Positive cache size: 643, Positive conditional cache size: 0, Positive unconditional cache size: 643, Negative cache size: 48, Negative conditional cache size: 0, Negative unconditional cache size: 48, Independence queries for same thread: 53880 - CounterExampleResult [Line: 35]: assertion can be violated assertion can be violated We found a FailurePath: [L13] 0 pendingIo := 1; VAL [pendingIo=1] [L14] 0 stopped := false; VAL [pendingIo=1, stopped=false] [L15] 0 stoppingEvent := false; VAL [pendingIo=1, stopped=false, stoppingEvent=false] [L16] 0 stoppingFlag := false; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L18] FORK 0 fork 0 ServerThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L19] FORK 0 fork 1 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L20] FORK 0 fork 2 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L21] FORK 0 fork 3 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L22] FORK 0 fork 4 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L45] 5 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L67] 1 stoppingFlag := true; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L77] 1 pendingIo := pendingIo - 1; [L78] COND TRUE 1 pendingIo == 0 [L79] 1 stoppingEvent := true; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L46] 5 pendingIo := pendingIo + 1; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L69] 1 assume stoppingEvent; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L70] 1 stopped := true; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] [L35] 5 assert !stopped; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 8 procedures, 58 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 476.8ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 37.1ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 430.2ms, PartialOrderReductionTime: 421.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2236occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: DeviceThreadThread1of1ForFork4 with 1 thread instances CFG has 8 procedures, 58 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9241.3ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 272.6ms, AutomataDifference: 1896.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3594.8ms, PartialOrderReductionTime: 3593.7ms, HoareTripleCheckerStatistics: 75 SDtfs, 66 SDslu, 116 SDs, 0 SdLazy, 64 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 45.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 19.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=82176occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3054.1ms AutomataMinimizationTime, 2 MinimizatonAttempts, 2867 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.9ms SsaConstructionTime, 31.0ms SatisfiabilityAnalysisTime, 145.1ms InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 91 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...