/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/ldv-regression/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 00:52:26,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 00:52:26,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 00:52:26,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 00:52:26,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 00:52:26,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 00:52:26,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 00:52:26,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 00:52:26,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 00:52:26,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 00:52:26,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 00:52:26,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 00:52:26,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 00:52:26,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 00:52:26,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 00:52:26,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 00:52:26,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 00:52:26,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 00:52:26,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 00:52:26,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 00:52:26,502 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 00:52:26,528 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 00:52:26,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 00:52:26,529 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 00:52:26,529 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 00:52:26,530 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 00:52:26,530 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 00:52:26,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 00:52:26,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 00:52:26,531 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 00:52:26,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 00:52:26,532 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 00:52:26,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 00:52:26,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 00:52:26,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 00:52:26,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 00:52:26,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 00:52:26,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 00:52:26,533 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 00:52:26,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 00:52:26,533 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 00:52:26,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 00:52:26,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 00:52:26,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 00:52:26,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 00:52:26,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 00:52:26,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 00:52:26,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 00:52:26,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 00:52:26,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 00:52:26,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 00:52:26,536 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 00:52:26,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 00:52:26,536 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 00:52:26,536 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 00:52:26,536 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 00:52:26,536 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 00:52:26,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 00:52:26,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 00:52:26,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 00:52:26,823 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 00:52:26,823 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 00:52:26,824 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/stateful_check.c [2023-04-02 00:52:27,945 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 00:52:28,127 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 00:52:28,133 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/stateful_check.c [2023-04-02 00:52:28,139 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6ea5c7d6/8be9e08e9fe446d1a73152180fe05c51/FLAGa77077ecb [2023-04-02 00:52:28,154 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6ea5c7d6/8be9e08e9fe446d1a73152180fe05c51 [2023-04-02 00:52:28,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 00:52:28,158 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 00:52:28,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 00:52:28,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 00:52:28,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 00:52:28,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 12:52:28" (1/1) ... [2023-04-02 00:52:28,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64a4b99d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:28, skipping insertion in model container [2023-04-02 00:52:28,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 12:52:28" (1/1) ... [2023-04-02 00:52:28,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 00:52:28,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 00:52:28,325 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/stateful_check.c[298,311] [2023-04-02 00:52:28,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 00:52:28,371 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 00:52:28,383 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/stateful_check.c[298,311] [2023-04-02 00:52:28,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 00:52:28,417 INFO L208 MainTranslator]: Completed translation [2023-04-02 00:52:28,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:28 WrapperNode [2023-04-02 00:52:28,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 00:52:28,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 00:52:28,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 00:52:28,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 00:52:28,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:28" (1/1) ... [2023-04-02 00:52:28,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:28" (1/1) ... [2023-04-02 00:52:28,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:28" (1/1) ... [2023-04-02 00:52:28,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:28" (1/1) ... [2023-04-02 00:52:28,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:28" (1/1) ... [2023-04-02 00:52:28,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:28" (1/1) ... [2023-04-02 00:52:28,454 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:28" (1/1) ... [2023-04-02 00:52:28,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:28" (1/1) ... [2023-04-02 00:52:28,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 00:52:28,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 00:52:28,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 00:52:28,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 00:52:28,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:28" (1/1) ... [2023-04-02 00:52:28,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 00:52:28,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:52:28,486 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 00:52:28,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 00:52:28,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 00:52:28,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 00:52:28,525 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 00:52:28,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2023-04-02 00:52:28,525 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-04-02 00:52:28,525 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-04-02 00:52:28,525 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2023-04-02 00:52:28,525 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2023-04-02 00:52:28,526 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2023-04-02 00:52:28,526 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2023-04-02 00:52:28,526 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2023-04-02 00:52:28,526 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2023-04-02 00:52:28,526 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 00:52:28,526 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 00:52:28,526 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 00:52:28,526 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 00:52:28,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 00:52:28,526 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2023-04-02 00:52:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 00:52:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-04-02 00:52:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-04-02 00:52:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2023-04-02 00:52:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2023-04-02 00:52:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2023-04-02 00:52:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2023-04-02 00:52:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2023-04-02 00:52:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2023-04-02 00:52:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 00:52:28,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 00:52:28,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 00:52:28,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 00:52:28,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 00:52:28,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 00:52:28,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 00:52:28,592 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 00:52:28,594 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 00:52:28,842 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 00:52:28,849 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 00:52:28,849 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 00:52:28,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 12:52:28 BoogieIcfgContainer [2023-04-02 00:52:28,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 00:52:28,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 00:52:28,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 00:52:28,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 00:52:28,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 12:52:28" (1/3) ... [2023-04-02 00:52:28,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@964fcca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 12:52:28, skipping insertion in model container [2023-04-02 00:52:28,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:52:28" (2/3) ... [2023-04-02 00:52:28,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@964fcca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 12:52:28, skipping insertion in model container [2023-04-02 00:52:28,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 12:52:28" (3/3) ... [2023-04-02 00:52:28,858 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2023-04-02 00:52:28,893 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 00:52:28,894 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 00:52:28,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 00:52:28,969 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@ad01721, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 00:52:28,969 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 00:52:28,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 51 states have internal predecessors, (63), 15 states have call successors, (15), 11 states have call predecessors, (15), 11 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-04-02 00:52:28,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-04-02 00:52:28,981 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:52:28,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:52:28,983 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:52:28,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:52:28,989 INFO L85 PathProgramCache]: Analyzing trace with hash 238000761, now seen corresponding path program 1 times [2023-04-02 00:52:28,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:52:28,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154269237] [2023-04-02 00:52:28,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:52:28,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:52:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:29,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:52:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:29,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 00:52:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:29,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:52:29,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:52:29,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154269237] [2023-04-02 00:52:29,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154269237] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:52:29,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:52:29,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 00:52:29,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308168619] [2023-04-02 00:52:29,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:52:29,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 00:52:29,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:52:29,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 00:52:29,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-02 00:52:29,261 INFO L87 Difference]: Start difference. First operand has 74 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 51 states have internal predecessors, (63), 15 states have call successors, (15), 11 states have call predecessors, (15), 11 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 00:52:29,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:52:29,528 INFO L93 Difference]: Finished difference Result 140 states and 185 transitions. [2023-04-02 00:52:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 00:52:29,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-04-02 00:52:29,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:52:29,539 INFO L225 Difference]: With dead ends: 140 [2023-04-02 00:52:29,539 INFO L226 Difference]: Without dead ends: 70 [2023-04-02 00:52:29,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-02 00:52:29,551 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 25 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 00:52:29,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 98 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 00:52:29,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-04-02 00:52:29,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2023-04-02 00:52:29,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 44 states have internal predecessors, (55), 15 states have call successors, (15), 11 states have call predecessors, (15), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 00:52:29,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2023-04-02 00:52:29,595 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 16 [2023-04-02 00:52:29,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:52:29,596 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2023-04-02 00:52:29,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 00:52:29,596 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2023-04-02 00:52:29,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-02 00:52:29,597 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:52:29,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:52:29,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 00:52:29,597 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:52:29,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:52:29,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1085780167, now seen corresponding path program 1 times [2023-04-02 00:52:29,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:52:29,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545933517] [2023-04-02 00:52:29,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:52:29,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:52:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:29,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:52:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:29,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 00:52:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:29,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:52:29,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:52:29,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545933517] [2023-04-02 00:52:29,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545933517] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:52:29,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:52:29,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 00:52:29,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031409747] [2023-04-02 00:52:29,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:52:29,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 00:52:29,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:52:29,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 00:52:29,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-02 00:52:29,763 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 00:52:29,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:52:29,920 INFO L93 Difference]: Finished difference Result 112 states and 143 transitions. [2023-04-02 00:52:29,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 00:52:29,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-04-02 00:52:29,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:52:29,922 INFO L225 Difference]: With dead ends: 112 [2023-04-02 00:52:29,923 INFO L226 Difference]: Without dead ends: 106 [2023-04-02 00:52:29,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-02 00:52:29,924 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 108 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 00:52:29,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 118 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 00:52:29,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-04-02 00:52:29,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2023-04-02 00:52:29,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 68 states have (on average 1.3676470588235294) internal successors, (93), 71 states have internal predecessors, (93), 21 states have call successors, (21), 16 states have call predecessors, (21), 12 states have return successors, (18), 14 states have call predecessors, (18), 16 states have call successors, (18) [2023-04-02 00:52:29,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 132 transitions. [2023-04-02 00:52:29,943 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 132 transitions. Word has length 17 [2023-04-02 00:52:29,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:52:29,943 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 132 transitions. [2023-04-02 00:52:29,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 00:52:29,943 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 132 transitions. [2023-04-02 00:52:29,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-04-02 00:52:29,944 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:52:29,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:52:29,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 00:52:29,945 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:52:29,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:52:29,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1882113651, now seen corresponding path program 1 times [2023-04-02 00:52:29,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:52:29,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740893661] [2023-04-02 00:52:29,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:52:29,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:52:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:30,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:52:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:30,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 00:52:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:30,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 00:52:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:30,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:52:30,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:52:30,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740893661] [2023-04-02 00:52:30,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740893661] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:52:30,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:52:30,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 00:52:30,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280382902] [2023-04-02 00:52:30,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:52:30,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 00:52:30,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:52:30,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 00:52:30,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 00:52:30,095 INFO L87 Difference]: Start difference. First operand 102 states and 132 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 00:52:30,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:52:30,329 INFO L93 Difference]: Finished difference Result 253 states and 356 transitions. [2023-04-02 00:52:30,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 00:52:30,330 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2023-04-02 00:52:30,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:52:30,332 INFO L225 Difference]: With dead ends: 253 [2023-04-02 00:52:30,332 INFO L226 Difference]: Without dead ends: 162 [2023-04-02 00:52:30,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-04-02 00:52:30,334 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 108 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 00:52:30,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 129 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 00:52:30,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-04-02 00:52:30,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 126. [2023-04-02 00:52:30,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 92 states have (on average 1.391304347826087) internal successors, (128), 95 states have internal predecessors, (128), 21 states have call successors, (21), 16 states have call predecessors, (21), 12 states have return successors, (18), 14 states have call predecessors, (18), 16 states have call successors, (18) [2023-04-02 00:52:30,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 167 transitions. [2023-04-02 00:52:30,353 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 167 transitions. Word has length 29 [2023-04-02 00:52:30,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:52:30,353 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 167 transitions. [2023-04-02 00:52:30,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 00:52:30,353 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 167 transitions. [2023-04-02 00:52:30,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-04-02 00:52:30,355 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:52:30,355 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:52:30,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 00:52:30,355 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:52:30,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:52:30,356 INFO L85 PathProgramCache]: Analyzing trace with hash -598760220, now seen corresponding path program 1 times [2023-04-02 00:52:30,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:52:30,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485542055] [2023-04-02 00:52:30,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:52:30,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:52:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:30,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:52:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:30,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 00:52:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:30,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 00:52:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:30,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 00:52:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:52:30,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:52:30,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485542055] [2023-04-02 00:52:30,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485542055] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:52:30,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287953622] [2023-04-02 00:52:30,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:52:30,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:52:30,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:52:30,489 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 00:52:30,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 00:52:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:30,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 00:52:30,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:52:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:52:30,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 00:52:30,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:52:30,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287953622] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 00:52:30,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 00:52:30,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 9 [2023-04-02 00:52:30,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791791695] [2023-04-02 00:52:30,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 00:52:30,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 00:52:30,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:52:30,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 00:52:30,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-04-02 00:52:30,700 INFO L87 Difference]: Start difference. First operand 126 states and 167 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 00:52:30,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:52:30,916 INFO L93 Difference]: Finished difference Result 388 states and 574 transitions. [2023-04-02 00:52:30,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 00:52:30,916 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 40 [2023-04-02 00:52:30,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:52:30,918 INFO L225 Difference]: With dead ends: 388 [2023-04-02 00:52:30,918 INFO L226 Difference]: Without dead ends: 273 [2023-04-02 00:52:30,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-04-02 00:52:30,920 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 259 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 00:52:30,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 189 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 00:52:30,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-04-02 00:52:30,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 198. [2023-04-02 00:52:30,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 164 states have (on average 1.4939024390243902) internal successors, (245), 167 states have internal predecessors, (245), 21 states have call successors, (21), 16 states have call predecessors, (21), 12 states have return successors, (18), 14 states have call predecessors, (18), 16 states have call successors, (18) [2023-04-02 00:52:30,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 284 transitions. [2023-04-02 00:52:30,942 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 284 transitions. Word has length 40 [2023-04-02 00:52:30,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:52:30,942 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 284 transitions. [2023-04-02 00:52:30,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 00:52:30,942 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 284 transitions. [2023-04-02 00:52:30,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-02 00:52:30,944 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:52:30,944 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:52:30,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 00:52:31,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:52:31,151 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:52:31,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:52:31,151 INFO L85 PathProgramCache]: Analyzing trace with hash -860184679, now seen corresponding path program 1 times [2023-04-02 00:52:31,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:52:31,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315736088] [2023-04-02 00:52:31,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:52:31,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:52:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:31,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:52:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:31,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 00:52:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:31,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 00:52:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:31,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-02 00:52:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:31,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 00:52:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:31,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 00:52:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:31,387 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-04-02 00:52:31,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:52:31,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315736088] [2023-04-02 00:52:31,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315736088] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:52:31,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:52:31,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 00:52:31,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017136285] [2023-04-02 00:52:31,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:52:31,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 00:52:31,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:52:31,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 00:52:31,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 00:52:31,392 INFO L87 Difference]: Start difference. First operand 198 states and 284 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (10), 6 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 00:52:31,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:52:31,674 INFO L93 Difference]: Finished difference Result 723 states and 1091 transitions. [2023-04-02 00:52:31,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 00:52:31,675 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (10), 6 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 63 [2023-04-02 00:52:31,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:52:31,678 INFO L225 Difference]: With dead ends: 723 [2023-04-02 00:52:31,679 INFO L226 Difference]: Without dead ends: 536 [2023-04-02 00:52:31,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-04-02 00:52:31,680 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 160 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 00:52:31,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 153 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 00:52:31,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2023-04-02 00:52:31,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 339. [2023-04-02 00:52:31,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 288 states have (on average 1.5138888888888888) internal successors, (436), 292 states have internal predecessors, (436), 29 states have call successors, (29), 26 states have call predecessors, (29), 21 states have return successors, (30), 20 states have call predecessors, (30), 24 states have call successors, (30) [2023-04-02 00:52:31,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 495 transitions. [2023-04-02 00:52:31,715 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 495 transitions. Word has length 63 [2023-04-02 00:52:31,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:52:31,716 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 495 transitions. [2023-04-02 00:52:31,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (10), 6 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 00:52:31,716 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 495 transitions. [2023-04-02 00:52:31,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-02 00:52:31,718 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:52:31,718 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:52:31,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 00:52:31,719 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:52:31,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:52:31,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1662153114, now seen corresponding path program 1 times [2023-04-02 00:52:31,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:52:31,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102344051] [2023-04-02 00:52:31,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:52:31,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:52:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:31,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:52:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:31,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 00:52:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:31,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 00:52:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:31,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-02 00:52:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:31,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 00:52:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:31,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 00:52:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:52:31,829 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 00:52:31,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:52:31,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102344051] [2023-04-02 00:52:31,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102344051] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:52:31,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:52:31,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 00:52:31,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060887570] [2023-04-02 00:52:31,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:52:31,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 00:52:31,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:52:31,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 00:52:31,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 00:52:31,831 INFO L87 Difference]: Start difference. First operand 339 states and 495 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 00:52:32,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:52:32,038 INFO L93 Difference]: Finished difference Result 799 states and 1184 transitions. [2023-04-02 00:52:32,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 00:52:32,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 63 [2023-04-02 00:52:32,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:52:32,042 INFO L225 Difference]: With dead ends: 799 [2023-04-02 00:52:32,042 INFO L226 Difference]: Without dead ends: 471 [2023-04-02 00:52:32,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 00:52:32,043 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 92 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 00:52:32,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 234 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 00:52:32,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2023-04-02 00:52:32,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 339. [2023-04-02 00:52:32,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 288 states have (on average 1.5069444444444444) internal successors, (434), 292 states have internal predecessors, (434), 29 states have call successors, (29), 26 states have call predecessors, (29), 21 states have return successors, (26), 20 states have call predecessors, (26), 24 states have call successors, (26) [2023-04-02 00:52:32,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 489 transitions. [2023-04-02 00:52:32,070 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 489 transitions. Word has length 63 [2023-04-02 00:52:32,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:52:32,070 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 489 transitions. [2023-04-02 00:52:32,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 00:52:32,071 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 489 transitions. [2023-04-02 00:52:32,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-02 00:52:32,072 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:52:32,072 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:52:32,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 00:52:32,073 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:52:32,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:52:32,073 INFO L85 PathProgramCache]: Analyzing trace with hash -478805817, now seen corresponding path program 1 times [2023-04-02 00:52:32,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:52:32,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093997958] [2023-04-02 00:52:32,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:52:32,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:52:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 00:52:32,085 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-02 00:52:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 00:52:32,121 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-04-02 00:52:32,121 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-02 00:52:32,122 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 00:52:32,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 00:52:32,126 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:52:32,129 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 00:52:32,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 12:52:32 BoogieIcfgContainer [2023-04-02 00:52:32,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 00:52:32,163 INFO L158 Benchmark]: Toolchain (without parser) took 4005.51ms. Allocated memory is still 243.3MB. Free memory was 193.0MB in the beginning and 142.6MB in the end (delta: 50.4MB). Peak memory consumption was 51.4MB. Max. memory is 8.0GB. [2023-04-02 00:52:32,163 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 195.0MB. Free memory was 141.2MB in the beginning and 141.1MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 00:52:32,164 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.58ms. Allocated memory is still 243.3MB. Free memory was 192.6MB in the beginning and 182.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 00:52:32,164 INFO L158 Benchmark]: Boogie Preprocessor took 37.78ms. Allocated memory is still 243.3MB. Free memory was 182.0MB in the beginning and 180.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 00:52:32,164 INFO L158 Benchmark]: RCFGBuilder took 394.07ms. Allocated memory is still 243.3MB. Free memory was 180.4MB in the beginning and 166.3MB in the end (delta: 14.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-04-02 00:52:32,164 INFO L158 Benchmark]: TraceAbstraction took 3309.50ms. Allocated memory is still 243.3MB. Free memory was 165.7MB in the beginning and 142.6MB in the end (delta: 23.2MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-04-02 00:52:32,165 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 195.0MB. Free memory was 141.2MB in the beginning and 141.1MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 257.58ms. Allocated memory is still 243.3MB. Free memory was 192.6MB in the beginning and 182.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.78ms. Allocated memory is still 243.3MB. Free memory was 182.0MB in the beginning and 180.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 394.07ms. Allocated memory is still 243.3MB. Free memory was 180.4MB in the beginning and 166.3MB in the end (delta: 14.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3309.50ms. Allocated memory is still 243.3MB. Free memory was 165.7MB in the beginning and 142.6MB in the end (delta: 23.2MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 6]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L11] int ldv_mutex = 1; [L13] int open_called = 0; VAL [\old(ldv_mutex)=52, \old(open_called)=50, ldv_mutex=1, open_called=0] [L76] int ldv_s_misc_fops_file_operations = 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L77] CALL my_init() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L71] open_called = 0 [L72] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L77] RET my_init() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, my_init()=0, open_called=0] [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L83] COND TRUE ldv_s_misc_fops_file_operations==0 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L84] CALL misc_open() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L59] COND TRUE __VERIFIER_nondet_int() [L61] return 1; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=1, ldv_mutex=1, open_called=0] [L84] RET misc_open() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, misc_open()=1, open_called=0] [L85] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L90] case 1: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L91] COND TRUE ldv_s_misc_fops_file_operations==1 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L92] CALL misc_read() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L54] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L92] RET misc_read() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, misc_read()=0, open_called=0] [L93] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L90] case 1: [L98] case 2: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L99] COND TRUE ldv_s_misc_fops_file_operations==2 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L100] CALL misc_llseek() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L50] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L100] RET misc_llseek() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, misc_llseek()=0, open_called=0] [L101] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L90] case 1: [L98] case 2: [L106] case 3: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=3, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L107] COND TRUE ldv_s_misc_fops_file_operations==3 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=3, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L108] CALL misc_release() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L36] COND FALSE !(\read(open_called)) VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L43] CALL mutex_lock() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L18] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L19] ldv_mutex = 2 VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=2, open_called=0] [L43] RET mutex_lock() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=2, open_called=0] [L44] CALL mutex_lock() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L18] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L18] CALL __blast_assert() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L6] reach_error() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 779 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 752 mSDsluCounter, 921 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 648 mSDsCounter, 310 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 959 IncrementalHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 310 mSolverCounterUnsat, 273 mSDtfsCounter, 959 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 166 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=339occurred in iteration=5, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 449 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 331 NumberOfCodeBlocks, 331 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 300 ConstructedInterpolants, 0 QuantifiedInterpolants, 670 SizeOfPredicates, 0 NumberOfNonLiveVariables, 146 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 51/60 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! [2023-04-02 00:52:32,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...