/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth04-incorrect.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 18:26:11,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 18:26:11,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 18:26:11,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-24 18:26:11,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-24 18:26:11,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-24 18:26:11,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-24 18:26:11,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-24 18:26:11,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-24 18:26:11,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-24 18:26:11,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-24 18:26:11,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-24 18:26:11,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 18:26:11,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 18:26:11,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 18:26:11,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 18:26:11,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 18:26:11,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 18:26:11,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 18:26:11,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 18:26:11,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 18:26:11,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 18:26:11,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 18:26:11,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 18:26:11,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-24 18:26:11,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-24 18:26:11,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-24 18:26:11,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-24 18:26:11,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-24 18:26:11,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-24 18:26:11,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-24 18:26:11,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-24 18:26:11,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-24 18:26:11,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-24 18:26:11,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-24 18:26:11,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-24 18:26:11,503 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2021-06-24 18:26:11,528 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 18:26:11,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 18:26:11,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 18:26:11,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 18:26:11,531 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 18:26:11,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 18:26:11,531 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 18:26:11,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 18:26:11,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 18:26:11,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 18:26:11,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 18:26:11,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 18:26:11,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 18:26:11,532 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 18:26:11,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 18:26:11,532 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 18:26:11,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 18:26:11,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 18:26:11,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 18:26:11,533 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 18:26:11,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 18:26:11,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 18:26:11,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 18:26:11,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 18:26:11,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 18:26:11,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 18:26:11,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 18:26:11,534 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 18:26:11,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 18:26:11,534 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-24 18:26:11,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 18:26:11,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 18:26:11,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 18:26:11,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 18:26:11,839 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 18:26:11,840 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 18:26:11,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth04-incorrect.bpl [2021-06-24 18:26:11,840 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth04-incorrect.bpl' [2021-06-24 18:26:11,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 18:26:11,859 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 18:26:11,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 18:26:11,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 18:26:11,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 18:26:11,868 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 06:26:11" (1/1) ... [2021-06-24 18:26:11,873 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 06:26:11" (1/1) ... [2021-06-24 18:26:11,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 18:26:11,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 18:26:11,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 18:26:11,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 18:26:11,891 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 06:26:11" (1/1) ... [2021-06-24 18:26:11,891 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 06:26:11" (1/1) ... [2021-06-24 18:26:11,892 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 06:26:11" (1/1) ... [2021-06-24 18:26:11,892 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 06:26:11" (1/1) ... [2021-06-24 18:26:11,893 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 06:26:11" (1/1) ... [2021-06-24 18:26:11,895 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 06:26:11" (1/1) ... [2021-06-24 18:26:11,895 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 06:26:11" (1/1) ... [2021-06-24 18:26:11,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 18:26:11,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 18:26:11,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 18:26:11,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 18:26:11,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 18:26:11,975 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 18:26:11,976 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 18:26:11,976 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 18:26:11,977 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 18:26:11,977 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 18:26:11,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 18:26:11,977 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 18:26:11,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 18:26:11,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 18:26:11,978 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-24 18:26:12,150 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 18:26:12,150 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 18:26:12,152 INFO L202 PluginConnector]: Adding new model bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 06:26:12 BoogieIcfgContainer [2021-06-24 18:26:12,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 18:26:12,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 18:26:12,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 18:26:12,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 18:26:12,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:11" (1/2) ... [2021-06-24 18:26:12,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404a03dd and model type bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 06:26:12, skipping insertion in model container [2021-06-24 18:26:12,156 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 06:26:12" (2/2) ... [2021-06-24 18:26:12,157 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth04-incorrect.bpl [2021-06-24 18:26:12,177 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 18:26:12,177 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 18:26:12,177 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 18:26:12,178 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 18:26:12,204 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 18:26:12,219 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-24 18:26:12,247 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:26:12,247 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:26:12,247 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:26:12,247 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:26:12,247 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:26:12,247 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:26:12,247 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:26:12,247 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-24 18:26:12,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 1559 states, 1300 states have (on average 1.9723076923076923) internal successors, (2564), 1558 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:26:12,657 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-24 18:26:12,658 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/5) [2021-06-24 18:26:12,659 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-24 18:26:12,660 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:26:12,660 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:26:12,660 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:26:12,660 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:26:12,660 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:26:12,660 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:26:12,660 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:26:12,661 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork4======== [2021-06-24 18:26:15,317 INFO L276 IsEmpty]: Start isEmpty. Operand has 14519 states, 14479 states have (on average 5.0234822846881695) internal successors, (72735), 14518 states have internal predecessors, (72735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:26:15,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-24 18:26:15,320 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:26:15,321 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:26:15,321 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:26:15,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:26:15,325 INFO L82 PathProgramCache]: Analyzing trace with hash -797775574, now seen corresponding path program 1 times [2021-06-24 18:26:15,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:26:15,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900131627] [2021-06-24 18:26:15,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:26:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:26:15,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:15,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:26:15,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:15,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:26:15,411 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 18:26:15,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:26:15,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900131627] [2021-06-24 18:26:15,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900131627] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:26:15,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:26:15,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 18:26:15,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662852668] [2021-06-24 18:26:15,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 18:26:15,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:26:15,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 18:26:15,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:26:15,465 INFO L87 Difference]: Start difference. First operand has 14519 states, 14479 states have (on average 5.0234822846881695) internal successors, (72735), 14518 states have internal predecessors, (72735), 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 18:26:15,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:26:15,757 INFO L93 Difference]: Finished difference Result 14283 states and 65834 transitions. [2021-06-24 18:26:15,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 18:26:15,758 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 18:26:15,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:26:15,861 INFO L225 Difference]: With dead ends: 14283 [2021-06-24 18:26:15,862 INFO L226 Difference]: Without dead ends: 10268 [2021-06-24 18:26:15,863 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:26:16,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10268 states. [2021-06-24 18:26:16,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10268 to 10240. [2021-06-24 18:26:16,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10240 states, 10232 states have (on average 4.538408913213448) internal successors, (46437), 10239 states have internal predecessors, (46437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:26:16,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10240 states to 10240 states and 46437 transitions. [2021-06-24 18:26:16,629 INFO L78 Accepts]: Start accepts. Automaton has 10240 states and 46437 transitions. Word has length 12 [2021-06-24 18:26:16,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:26:16,631 INFO L482 AbstractCegarLoop]: Abstraction has 10240 states and 46437 transitions. [2021-06-24 18:26:16,631 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 18:26:16,632 INFO L276 IsEmpty]: Start isEmpty. Operand 10240 states and 46437 transitions. [2021-06-24 18:26:16,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-24 18:26:16,643 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:26:16,643 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:26:16,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 18:26:16,644 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:26:16,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:26:16,645 INFO L82 PathProgramCache]: Analyzing trace with hash 511304936, now seen corresponding path program 1 times [2021-06-24 18:26:16,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:26:16,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646935542] [2021-06-24 18:26:16,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:26:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:26:16,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:16,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-24 18:26:16,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:16,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:26:16,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:16,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:26:16,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:16,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:26:16,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:16,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:26:16,725 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 18:26:16,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:26:16,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646935542] [2021-06-24 18:26:16,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646935542] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:26:16,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:26:16,726 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 18:26:16,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527579761] [2021-06-24 18:26:16,727 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 18:26:16,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:26:16,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 18:26:16,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 18:26:16,729 INFO L87 Difference]: Start difference. First operand 10240 states and 46437 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 18:26:17,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:26:17,009 INFO L93 Difference]: Finished difference Result 16088 states and 75296 transitions. [2021-06-24 18:26:17,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 18:26:17,011 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 18:26:17,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:26:17,210 INFO L225 Difference]: With dead ends: 16088 [2021-06-24 18:26:17,211 INFO L226 Difference]: Without dead ends: 16088 [2021-06-24 18:26:17,212 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 18.2ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 18:26:17,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16088 states. [2021-06-24 18:26:17,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16088 to 15901. [2021-06-24 18:26:17,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15901 states, 15893 states have (on average 4.695966777826716) internal successors, (74633), 15900 states have internal predecessors, (74633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:26:17,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15901 states to 15901 states and 74633 transitions. [2021-06-24 18:26:17,868 INFO L78 Accepts]: Start accepts. Automaton has 15901 states and 74633 transitions. Word has length 16 [2021-06-24 18:26:17,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:26:17,869 INFO L482 AbstractCegarLoop]: Abstraction has 15901 states and 74633 transitions. [2021-06-24 18:26:17,869 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 18:26:17,869 INFO L276 IsEmpty]: Start isEmpty. Operand 15901 states and 74633 transitions. [2021-06-24 18:26:17,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-24 18:26:17,882 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:26:17,882 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:26:17,882 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 18:26:17,882 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:26:17,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:26:17,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1141384586, now seen corresponding path program 2 times [2021-06-24 18:26:17,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:26:17,883 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571200867] [2021-06-24 18:26:17,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:26:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 18:26:17,890 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 18:26:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 18:26:17,902 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 18:26:17,920 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-24 18:26:17,921 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-06-24 18:26:17,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 18:26:17,921 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork4 was UNSAFE (2/5) [2021-06-24 18:26:17,922 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 18:26:17,937 INFO L202 PluginConnector]: Adding new model bluetooth04-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 06:26:17 BasicIcfg [2021-06-24 18:26:17,937 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 18:26:17,938 INFO L168 Benchmark]: Toolchain (without parser) took 6078.93 ms. Allocated memory was 180.4 MB in the beginning and 1.0 GB in the end (delta: 839.9 MB). Free memory was 158.8 MB in the beginning and 642.0 MB in the end (delta: -483.2 MB). Peak memory consumption was 357.2 MB. Max. memory is 8.0 GB. [2021-06-24 18:26:17,939 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 180.4 MB. Free memory is still 159.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 18:26:17,942 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.88 ms. Allocated memory is still 180.4 MB. Free memory was 158.7 MB in the beginning and 157.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-06-24 18:26:17,943 INFO L168 Benchmark]: Boogie Preprocessor took 10.73 ms. Allocated memory is still 180.4 MB. Free memory was 157.0 MB in the beginning and 156.1 MB in the end (delta: 945.4 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 18:26:17,943 INFO L168 Benchmark]: RCFGBuilder took 255.37 ms. Allocated memory is still 180.4 MB. Free memory was 156.0 MB in the beginning and 143.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-06-24 18:26:17,944 INFO L168 Benchmark]: TraceAbstraction took 5784.07 ms. Allocated memory was 180.4 MB in the beginning and 1.0 GB in the end (delta: 839.9 MB). Free memory was 143.2 MB in the beginning and 642.0 MB in the end (delta: -498.8 MB). Peak memory consumption was 340.4 MB. Max. memory is 8.0 GB. [2021-06-24 18:26:17,948 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 0.13 ms. Allocated memory is still 180.4 MB. Free memory is still 159.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 24.88 ms. Allocated memory is still 180.4 MB. Free memory was 158.7 MB in the beginning and 157.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 10.73 ms. Allocated memory is still 180.4 MB. Free memory was 157.0 MB in the beginning and 156.1 MB in the end (delta: 945.4 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 255.37 ms. Allocated memory is still 180.4 MB. Free memory was 156.0 MB in the beginning and 143.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5784.07 ms. Allocated memory was 180.4 MB in the beginning and 1.0 GB in the end (delta: 839.9 MB). Free memory was 143.2 MB in the beginning and 642.0 MB in the end (delta: -498.8 MB). Peak memory consumption was 340.4 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: 5924, positive: 5113, positive conditional: 5113, positive unconditional: 0, negative: 811, negative conditional: 811, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 5423, positive: 5113, positive conditional: 0, positive unconditional: 5113, negative: 310, negative conditional: 0, negative unconditional: 310, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 254, positive: 238, positive conditional: 0, positive unconditional: 238, 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: 254, positive: 220, positive conditional: 0, positive unconditional: 220, 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: 114, positive: 57, positive conditional: 0, positive unconditional: 57, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5423, positive: 4875, positive conditional: 0, positive unconditional: 4875, negative: 294, negative conditional: 0, negative unconditional: 294, unknown: 254, unknown conditional: 0, unknown unconditional: 254] , Statistics on independence cache: Total cache size (in pairs): 254, Positive cache size: 238, Positive conditional cache size: 0, Positive unconditional cache size: 238, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Independence queries for same thread: 501 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 182150, positive: 157189, positive conditional: 157189, positive unconditional: 0, negative: 24961, negative conditional: 24961, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 165573, positive: 157189, positive conditional: 0, positive unconditional: 157189, negative: 8384, negative conditional: 0, negative unconditional: 8384, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 629, positive: 583, positive conditional: 0, positive unconditional: 583, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 629, positive: 547, positive conditional: 0, positive unconditional: 547, negative: 82, negative conditional: 0, negative unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 82, positive: 36, positive conditional: 0, positive unconditional: 36, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 182, positive: 74, positive conditional: 0, positive unconditional: 74, negative: 108, negative conditional: 0, negative unconditional: 108, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 165573, positive: 156606, positive conditional: 0, positive unconditional: 156606, negative: 8338, negative conditional: 0, negative unconditional: 8338, unknown: 629, unknown conditional: 0, unknown unconditional: 629] , Statistics on independence cache: Total cache size (in pairs): 629, Positive cache size: 583, Positive conditional cache size: 0, Positive unconditional cache size: 583, Negative cache size: 46, Negative conditional cache size: 0, Negative unconditional cache size: 46, Independence queries for same thread: 16577 - 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: 412.3ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 33.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 375.9ms, PartialOrderReductionTime: 367.5ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1559occurred 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: 5261.0ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 90.5ms, AutomataDifference: 931.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2593.1ms, PartialOrderReductionTime: 2592.1ms, HoareTripleCheckerStatistics: 76 SDtfs, 80 SDslu, 96 SDs, 0 SdLazy, 46 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 60.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 24.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15901occurred in iteration=2, 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: 1337.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 215 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.9ms SsaConstructionTime, 22.7ms SatisfiabilityAnalysisTime, 93.0ms 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...