/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/bluetooth01-incorrect.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 18:38:59,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 18:38:59,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 18:38:59,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-24 18:38:59,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-24 18:38:59,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-24 18:38:59,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-24 18:38:59,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-24 18:38:59,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-24 18:38:59,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-24 18:38:59,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-24 18:38:59,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-24 18:38:59,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 18:38:59,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 18:38:59,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 18:38:59,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 18:38:59,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 18:38:59,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 18:38:59,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 18:38:59,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 18:38:59,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 18:38:59,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 18:38:59,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 18:38:59,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 18:38:59,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-24 18:38:59,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-24 18:38:59,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-24 18:38:59,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-24 18:38:59,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-24 18:38:59,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-24 18:38:59,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-24 18:38:59,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-24 18:38:59,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-24 18:38:59,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-24 18:38:59,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-24 18:38:59,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-24 18:38:59,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-24 18:38:59,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-24 18:38:59,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-24 18:38:59,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-24 18:38:59,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-24 18:38:59,434 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 18:38:59,469 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 18:38:59,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 18:38:59,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 18:38:59,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 18:38:59,472 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 18:38:59,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 18:38:59,473 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 18:38:59,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 18:38:59,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 18:38:59,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 18:38:59,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 18:38:59,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 18:38:59,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 18:38:59,475 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 18:38:59,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 18:38:59,475 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 18:38:59,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 18:38:59,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 18:38:59,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 18:38:59,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 18:38:59,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 18:38:59,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 18:38:59,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 18:38:59,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 18:38:59,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 18:38:59,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 18:38:59,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 18:38:59,477 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 18:38:59,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 18:38:59,478 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-24 18:38:59,478 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 18:38:59,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 18:38:59,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 18:38:59,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 18:38:59,860 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 18:38:59,865 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 18:38:59,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth01-incorrect.bpl [2021-06-24 18:38:59,866 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth01-incorrect.bpl' [2021-06-24 18:38:59,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 18:38:59,891 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 18:38:59,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 18:38:59,892 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 18:38:59,892 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 18:38:59,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth01-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:38:59,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth01-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:38:59,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 18:38:59,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 18:38:59,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 18:38:59,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 18:38:59,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth01-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:38:59,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth01-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:38:59,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth01-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:38:59,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth01-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:38:59,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth01-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:38:59,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth01-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:38:59,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth01-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:38:59,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 18:38:59,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 18:38:59,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 18:38:59,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 18:38:59,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth01-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 18:39:00,036 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 18:39:00,038 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 18:39:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 18:39:00,039 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 18:39:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 18:39:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 18:39:00,040 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 18:39:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 18:39:00,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 18:39:00,041 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 18:39:00,207 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 18:39:00,207 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 18:39:00,209 INFO L202 PluginConnector]: Adding new model bluetooth01-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 06:39:00 BoogieIcfgContainer [2021-06-24 18:39:00,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 18:39:00,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 18:39:00,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 18:39:00,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 18:39:00,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth01-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/2) ... [2021-06-24 18:39:00,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cfd8716 and model type bluetooth01-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 06:39:00, skipping insertion in model container [2021-06-24 18:39:00,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth01-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 06:39:00" (2/2) ... [2021-06-24 18:39:00,215 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth01-incorrect.bpl [2021-06-24 18:39:00,220 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 18:39:00,220 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 18:39:00,235 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 18:39:00,236 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 18:39:00,278 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 18:39:00,313 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-24 18:39:00,349 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:39:00,349 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:39:00,350 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:39:00,350 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:39:00,350 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:39:00,350 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:39:00,350 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:39:00,350 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-24 18:39:00,420 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 10 states have (on average 1.0) internal successors, (10), 10 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:39:00,426 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-24 18:39:00,427 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2) [2021-06-24 18:39:00,428 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-24 18:39:00,445 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:39:00,445 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:39:00,445 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:39:00,445 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:39:00,446 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:39:00,446 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:39:00,446 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:39:00,446 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork1======== [2021-06-24 18:39:00,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 105 states have (on average 1.7523809523809524) internal successors, (184), 131 states have internal predecessors, (184), 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 18:39:00,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-06-24 18:39:00,582 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:39:00,583 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:39:00,583 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:39:00,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:39:00,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1873389066, now seen corresponding path program 1 times [2021-06-24 18:39:00,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:39:00,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418886514] [2021-06-24 18:39:00,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:39:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:39:00,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:00,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:39:00,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:00,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:39:00,735 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 18:39:00,736 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:39:00,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418886514] [2021-06-24 18:39:00,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418886514] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:39:00,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:39:00,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 18:39:00,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795753646] [2021-06-24 18:39:00,739 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 18:39:00,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:39:00,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 18:39:00,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:39:00,754 INFO L87 Difference]: Start difference. First operand has 132 states, 105 states have (on average 1.7523809523809524) internal successors, (184), 131 states have internal predecessors, (184), 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 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 18:39:00,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:39:00,783 INFO L93 Difference]: Finished difference Result 130 states and 171 transitions. [2021-06-24 18:39:00,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 18:39:00,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-06-24 18:39:00,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:39:00,791 INFO L225 Difference]: With dead ends: 130 [2021-06-24 18:39:00,791 INFO L226 Difference]: Without dead ends: 70 [2021-06-24 18:39:00,792 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:39:00,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-06-24 18:39:00,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2021-06-24 18:39:00,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 65 states have (on average 1.2923076923076924) internal successors, (84), 67 states have internal predecessors, (84), 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 18:39:00,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2021-06-24 18:39:00,834 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 9 [2021-06-24 18:39:00,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:39:00,835 INFO L482 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2021-06-24 18:39:00,835 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 18:39:00,836 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2021-06-24 18:39:00,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-06-24 18:39:00,837 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:39:00,837 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:39:00,837 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 18:39:00,837 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:39:00,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:39:00,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1492925320, now seen corresponding path program 1 times [2021-06-24 18:39:00,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:39:00,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021607506] [2021-06-24 18:39:00,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:39:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:39:00,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:00,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:39:00,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:00,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:39:00,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:00,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:39:00,869 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 18:39:00,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:39:00,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021607506] [2021-06-24 18:39:00,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021607506] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:39:00,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:39:00,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 18:39:00,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382263285] [2021-06-24 18:39:00,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 18:39:00,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:39:00,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 18:39:00,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:39:00,873 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 18:39:00,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:39:00,884 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2021-06-24 18:39:00,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 18:39:00,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2021-06-24 18:39:00,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:39:00,886 INFO L225 Difference]: With dead ends: 44 [2021-06-24 18:39:00,886 INFO L226 Difference]: Without dead ends: 30 [2021-06-24 18:39:00,887 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:39:00,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-06-24 18:39:00,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2021-06-24 18:39:00,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 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 18:39:00,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-06-24 18:39:00,894 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 13 [2021-06-24 18:39:00,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:39:00,894 INFO L482 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-06-24 18:39:00,894 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 18:39:00,894 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-06-24 18:39:00,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-06-24 18:39:00,895 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:39:00,895 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:39:00,895 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 18:39:00,895 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:39:00,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:39:00,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1767318196, now seen corresponding path program 2 times [2021-06-24 18:39:00,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:39:00,896 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041107059] [2021-06-24 18:39:00,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:39:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:39:00,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:00,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-24 18:39:00,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:00,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:39:00,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:00,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:39:00,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:00,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:39:00,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:00,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:39:00,949 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 18:39:00,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:39:00,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041107059] [2021-06-24 18:39:00,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041107059] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:39:00,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:39:00,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 18:39:00,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460535192] [2021-06-24 18:39:00,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 18:39:00,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:39:00,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 18:39:00,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 18:39:00,951 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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 18:39:00,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:39:00,973 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-06-24 18:39:00,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 18:39:00,974 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2021-06-24 18:39:00,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:39:00,974 INFO L225 Difference]: With dead ends: 30 [2021-06-24 18:39:00,974 INFO L226 Difference]: Without dead ends: 25 [2021-06-24 18:39:00,975 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 18.7ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 18:39:00,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-06-24 18:39:00,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-06-24 18:39:00,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 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 18:39:00,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-06-24 18:39:00,977 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 13 [2021-06-24 18:39:00,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:39:00,978 INFO L482 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-06-24 18:39:00,978 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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 18:39:00,978 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-06-24 18:39:00,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-06-24 18:39:00,978 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:39:00,978 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:39:00,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 18:39:00,979 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:39:00,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:39:00,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1882609366, now seen corresponding path program 3 times [2021-06-24 18:39:00,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:39:00,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256647640] [2021-06-24 18:39:00,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:39:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 18:39:00,986 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 18:39:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 18:39:00,990 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 18:39:01,001 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-24 18:39:01,001 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-06-24 18:39:01,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-24 18:39:01,002 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork1 was UNSAFE (2/2) [2021-06-24 18:39:01,003 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 18:39:01,012 INFO L202 PluginConnector]: Adding new model bluetooth01-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 06:39:01 BasicIcfg [2021-06-24 18:39:01,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 18:39:01,013 INFO L168 Benchmark]: Toolchain (without parser) took 1121.64 ms. Allocated memory is still 199.2 MB. Free memory was 179.3 MB in the beginning and 154.2 MB in the end (delta: 25.1 MB). Peak memory consumption was 27.2 MB. Max. memory is 8.0 GB. [2021-06-24 18:39:01,013 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 199.2 MB. Free memory is still 180.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 18:39:01,014 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.76 ms. Allocated memory is still 199.2 MB. Free memory was 179.2 MB in the beginning and 177.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-06-24 18:39:01,015 INFO L168 Benchmark]: Boogie Preprocessor took 18.76 ms. Allocated memory is still 199.2 MB. Free memory was 177.5 MB in the beginning and 176.5 MB in the end (delta: 952.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 18:39:01,015 INFO L168 Benchmark]: RCFGBuilder took 255.89 ms. Allocated memory is still 199.2 MB. Free memory was 176.4 MB in the beginning and 164.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-06-24 18:39:01,016 INFO L168 Benchmark]: TraceAbstraction took 801.63 ms. Allocated memory is still 199.2 MB. Free memory was 163.7 MB in the beginning and 154.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.4 MB. Max. memory is 8.0 GB. [2021-06-24 18:39:01,019 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 0.19 ms. Allocated memory is still 199.2 MB. Free memory is still 180.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 39.76 ms. Allocated memory is still 199.2 MB. Free memory was 179.2 MB in the beginning and 177.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 18.76 ms. Allocated memory is still 199.2 MB. Free memory was 177.5 MB in the beginning and 176.5 MB in the end (delta: 952.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 255.89 ms. Allocated memory is still 199.2 MB. Free memory was 176.4 MB in the beginning and 164.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 801.63 ms. Allocated memory is still 199.2 MB. Free memory was 163.7 MB in the beginning and 154.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.4 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: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 0 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 216, positive: 194, positive conditional: 194, positive unconditional: 0, negative: 22, negative conditional: 22, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 204, positive: 194, positive conditional: 0, positive unconditional: 194, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 67, positive: 61, positive conditional: 0, positive unconditional: 61, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 67, positive: 56, positive conditional: 0, positive unconditional: 56, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 11, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 80, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 204, positive: 133, positive conditional: 0, positive unconditional: 133, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 67, unknown conditional: 0, unknown unconditional: 67] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Independence queries for same thread: 12 - CounterExampleResult [Line: 32]: 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] [L42] 2 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L64] 1 stoppingFlag := true; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L74] 1 pendingIo := pendingIo - 1; [L75] COND TRUE 1 pendingIo == 0 [L76] 1 stoppingEvent := true; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L43] 2 pendingIo := pendingIo + 1; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L66] 1 assume stoppingEvent; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L67] 1 stopped := true; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] [L32] 2 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 5 procedures, 34 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 79.6ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 8.2ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 67.7ms, PartialOrderReductionTime: 50.1ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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: DeviceThreadThread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 34 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 556.6ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 4.2ms, AutomataDifference: 91.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 134.1ms, PartialOrderReductionTime: 132.9ms, HoareTripleCheckerStatistics: 53 SDtfs, 28 SDslu, 35 SDs, 0 SdLazy, 20 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 27.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 42.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 41.7ms AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.3ms SsaConstructionTime, 26.5ms SatisfiabilityAnalysisTime, 113.3ms InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 79 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...