/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/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 07:00:51,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 07:00:51,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 07:00:51,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 07:00:51,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 07:00:51,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 07:00:51,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 07:00:51,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 07:00:51,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 07:00:51,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 07:00:51,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 07:00:51,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 07:00:51,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 07:00:51,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 07:00:51,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 07:00:51,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 07:00:51,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 07:00:51,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 07:00:51,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 07:00:51,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 07:00:51,710 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 07:00:51,733 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 07:00:51,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 07:00:51,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 07:00:51,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 07:00:51,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 07:00:51,734 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 07:00:51,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 07:00:51,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 07:00:51,735 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 07:00:51,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 07:00:51,735 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 07:00:51,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 07:00:51,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 07:00:51,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 07:00:51,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 07:00:51,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 07:00:51,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 07:00:51,736 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 07:00:51,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 07:00:51,736 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 07:00:51,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 07:00:51,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 07:00:51,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 07:00:51,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 07:00:51,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 07:00:51,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 07:00:51,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 07:00:51,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 07:00:51,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 07:00:51,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 07:00:51,737 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 07:00:51,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 07:00:51,738 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 07:00:51,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 07:00:51,738 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 07:00:51,738 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 07:00:51,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 07:00:51,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 07:00:51,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 07:00:51,951 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 07:00:51,952 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 07:00:51,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-04-02 07:00:52,955 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 07:00:53,238 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 07:00:53,239 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-04-02 07:00:53,256 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f756ca51f/02674b1fb2a24ff4a6f5f62c09c32d49/FLAG7374da6c1 [2023-04-02 07:00:53,268 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f756ca51f/02674b1fb2a24ff4a6f5f62c09c32d49 [2023-04-02 07:00:53,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 07:00:53,272 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 07:00:53,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 07:00:53,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 07:00:53,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 07:00:53,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 07:00:53" (1/1) ... [2023-04-02 07:00:53,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d84205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:53, skipping insertion in model container [2023-04-02 07:00:53,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 07:00:53" (1/1) ... [2023-04-02 07:00:53,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 07:00:53,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 07:00:53,688 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/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[22900,22913] [2023-04-02 07:00:53,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 07:00:53,849 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 07:00:53,927 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/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[22900,22913] [2023-04-02 07:00:53,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 07:00:53,999 INFO L208 MainTranslator]: Completed translation [2023-04-02 07:00:53,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:53 WrapperNode [2023-04-02 07:00:53,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 07:00:54,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 07:00:54,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 07:00:54,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 07:00:54,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:53" (1/1) ... [2023-04-02 07:00:54,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:53" (1/1) ... [2023-04-02 07:00:54,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:53" (1/1) ... [2023-04-02 07:00:54,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:53" (1/1) ... [2023-04-02 07:00:54,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:53" (1/1) ... [2023-04-02 07:00:54,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:53" (1/1) ... [2023-04-02 07:00:54,119 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:53" (1/1) ... [2023-04-02 07:00:54,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:53" (1/1) ... [2023-04-02 07:00:54,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 07:00:54,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 07:00:54,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 07:00:54,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 07:00:54,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:53" (1/1) ... [2023-04-02 07:00:54,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 07:00:54,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 07:00:54,168 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 07:00:54,175 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 07:00:54,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 07:00:54,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 07:00:54,203 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 07:00:54,203 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 07:00:54,203 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 07:00:54,203 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 07:00:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 07:00:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 07:00:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 07:00:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 07:00:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 07:00:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 07:00:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 07:00:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 07:00:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 07:00:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 07:00:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 07:00:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 07:00:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 07:00:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 07:00:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 07:00:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 07:00:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 07:00:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 07:00:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 07:00:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 07:00:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 07:00:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 07:00:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 07:00:54,387 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 07:00:54,389 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 07:00:55,820 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 07:00:55,831 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 07:00:55,831 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 07:00:55,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 07:00:55 BoogieIcfgContainer [2023-04-02 07:00:55,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 07:00:55,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 07:00:55,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 07:00:55,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 07:00:55,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 07:00:53" (1/3) ... [2023-04-02 07:00:55,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c7ee20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 07:00:55, skipping insertion in model container [2023-04-02 07:00:55,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:53" (2/3) ... [2023-04-02 07:00:55,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c7ee20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 07:00:55, skipping insertion in model container [2023-04-02 07:00:55,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 07:00:55" (3/3) ... [2023-04-02 07:00:55,842 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-04-02 07:00:55,854 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 07:00:55,854 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 07:00:55,911 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 07:00:55,917 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;@4fd7f458, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 07:00:55,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 07:00:55,926 INFO L276 IsEmpty]: Start isEmpty. Operand has 783 states, 769 states have (on average 1.836150845253576) internal successors, (1412), 778 states have internal predecessors, (1412), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 07:00:55,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-04-02 07:00:55,954 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:00:55,955 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, 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, 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, 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, 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 07:00:55,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:00:55,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:00:55,961 INFO L85 PathProgramCache]: Analyzing trace with hash -833373572, now seen corresponding path program 1 times [2023-04-02 07:00:55,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:00:55,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079100887] [2023-04-02 07:00:55,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:00:55,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:00:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:57,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:00:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:57,220 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 07:00:57,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:00:57,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079100887] [2023-04-02 07:00:57,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079100887] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:00:57,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:00:57,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:00:57,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640497136] [2023-04-02 07:00:57,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:00:57,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:00:57,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:00:57,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:00:57,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:00:57,257 INFO L87 Difference]: Start difference. First operand has 783 states, 769 states have (on average 1.836150845253576) internal successors, (1412), 778 states have internal predecessors, (1412), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:01,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:01:01,341 INFO L93 Difference]: Finished difference Result 1229 states and 2146 transitions. [2023-04-02 07:01:01,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:01:01,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 217 [2023-04-02 07:01:01,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:01:01,371 INFO L225 Difference]: With dead ends: 1229 [2023-04-02 07:01:01,371 INFO L226 Difference]: Without dead ends: 975 [2023-04-02 07:01:01,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:01:01,377 INFO L413 NwaCegarLoop]: 1415 mSDtfsCounter, 396 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 2714 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-02 07:01:01,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 2714 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1440 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-02 07:01:01,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2023-04-02 07:01:01,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 973. [2023-04-02 07:01:01,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 969 states have (on average 1.720330237358101) internal successors, (1667), 969 states have internal predecessors, (1667), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:01,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1670 transitions. [2023-04-02 07:01:01,448 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1670 transitions. Word has length 217 [2023-04-02 07:01:01,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:01:01,448 INFO L495 AbstractCegarLoop]: Abstraction has 973 states and 1670 transitions. [2023-04-02 07:01:01,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:01,449 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1670 transitions. [2023-04-02 07:01:01,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-04-02 07:01:01,453 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:01:01,453 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, 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, 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, 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, 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, 1, 1, 1, 1] [2023-04-02 07:01:01,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 07:01:01,453 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:01:01,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:01:01,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1956702207, now seen corresponding path program 1 times [2023-04-02 07:01:01,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:01:01,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916912898] [2023-04-02 07:01:01,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:01:01,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:01:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:02,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:01:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:02,205 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 07:01:02,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:01:02,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916912898] [2023-04-02 07:01:02,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916912898] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:01:02,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:01:02,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:01:02,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993142472] [2023-04-02 07:01:02,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:01:02,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:01:02,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:01:02,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:01:02,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:01:02,210 INFO L87 Difference]: Start difference. First operand 973 states and 1670 transitions. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:05,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:01:05,766 INFO L93 Difference]: Finished difference Result 1791 states and 3022 transitions. [2023-04-02 07:01:05,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:01:05,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 221 [2023-04-02 07:01:05,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:01:05,775 INFO L225 Difference]: With dead ends: 1791 [2023-04-02 07:01:05,777 INFO L226 Difference]: Without dead ends: 1370 [2023-04-02 07:01:05,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:01:05,786 INFO L413 NwaCegarLoop]: 1331 mSDtfsCounter, 332 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-02 07:01:05,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 2607 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-02 07:01:05,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2023-04-02 07:01:05,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1368. [2023-04-02 07:01:05,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1364 states have (on average 1.6994134897360704) internal successors, (2318), 1364 states have internal predecessors, (2318), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:05,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 2321 transitions. [2023-04-02 07:01:05,837 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 2321 transitions. Word has length 221 [2023-04-02 07:01:05,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:01:05,838 INFO L495 AbstractCegarLoop]: Abstraction has 1368 states and 2321 transitions. [2023-04-02 07:01:05,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:05,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 2321 transitions. [2023-04-02 07:01:05,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-04-02 07:01:05,841 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:01:05,841 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:01:05,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 07:01:05,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:01:05,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:01:05,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1752887302, now seen corresponding path program 1 times [2023-04-02 07:01:05,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:01:05,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709209525] [2023-04-02 07:01:05,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:01:05,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:01:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:06,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:01:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:06,585 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 07:01:06,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:01:06,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709209525] [2023-04-02 07:01:06,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709209525] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:01:06,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:01:06,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:01:06,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570320184] [2023-04-02 07:01:06,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:01:06,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:01:06,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:01:06,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:01:06,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:01:06,587 INFO L87 Difference]: Start difference. First operand 1368 states and 2321 transitions. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:09,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:01:09,938 INFO L93 Difference]: Finished difference Result 2952 states and 4931 transitions. [2023-04-02 07:01:09,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:01:09,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 225 [2023-04-02 07:01:09,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:01:09,946 INFO L225 Difference]: With dead ends: 2952 [2023-04-02 07:01:09,946 INFO L226 Difference]: Without dead ends: 2136 [2023-04-02 07:01:09,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:01:09,949 INFO L413 NwaCegarLoop]: 1331 mSDtfsCounter, 324 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-02 07:01:09,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 2608 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-02 07:01:09,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2023-04-02 07:01:09,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2134. [2023-04-02 07:01:10,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2134 states, 2130 states have (on average 1.6779342723004695) internal successors, (3574), 2130 states have internal predecessors, (3574), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:10,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2134 states to 2134 states and 3577 transitions. [2023-04-02 07:01:10,007 INFO L78 Accepts]: Start accepts. Automaton has 2134 states and 3577 transitions. Word has length 225 [2023-04-02 07:01:10,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:01:10,007 INFO L495 AbstractCegarLoop]: Abstraction has 2134 states and 3577 transitions. [2023-04-02 07:01:10,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:10,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2134 states and 3577 transitions. [2023-04-02 07:01:10,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-04-02 07:01:10,010 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:01:10,011 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:01:10,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 07:01:10,011 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:01:10,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:01:10,011 INFO L85 PathProgramCache]: Analyzing trace with hash 601234827, now seen corresponding path program 1 times [2023-04-02 07:01:10,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:01:10,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154839637] [2023-04-02 07:01:10,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:01:10,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:01:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:10,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:01:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:10,700 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 07:01:10,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:01:10,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154839637] [2023-04-02 07:01:10,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154839637] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:01:10,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:01:10,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:01:10,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382365375] [2023-04-02 07:01:10,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:01:10,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:01:10,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:01:10,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:01:10,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:01:10,702 INFO L87 Difference]: Start difference. First operand 2134 states and 3577 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:14,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:01:14,244 INFO L93 Difference]: Finished difference Result 5202 states and 8611 transitions. [2023-04-02 07:01:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:01:14,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 229 [2023-04-02 07:01:14,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:01:14,256 INFO L225 Difference]: With dead ends: 5202 [2023-04-02 07:01:14,256 INFO L226 Difference]: Without dead ends: 3620 [2023-04-02 07:01:14,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:01:14,266 INFO L413 NwaCegarLoop]: 1331 mSDtfsCounter, 316 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-02 07:01:14,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 2609 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-02 07:01:14,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3620 states. [2023-04-02 07:01:14,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 3618. [2023-04-02 07:01:14,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3618 states, 3614 states have (on average 1.6585500830105147) internal successors, (5994), 3614 states have internal predecessors, (5994), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:14,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 5997 transitions. [2023-04-02 07:01:14,402 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 5997 transitions. Word has length 229 [2023-04-02 07:01:14,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:01:14,403 INFO L495 AbstractCegarLoop]: Abstraction has 3618 states and 5997 transitions. [2023-04-02 07:01:14,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:14,403 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 5997 transitions. [2023-04-02 07:01:14,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-04-02 07:01:14,408 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:01:14,408 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:01:14,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 07:01:14,408 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:01:14,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:01:14,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1106969712, now seen corresponding path program 1 times [2023-04-02 07:01:14,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:01:14,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910671399] [2023-04-02 07:01:14,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:01:14,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:01:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:15,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:01:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:15,135 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 07:01:15,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:01:15,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910671399] [2023-04-02 07:01:15,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910671399] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:01:15,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:01:15,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:01:15,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031176914] [2023-04-02 07:01:15,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:01:15,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:01:15,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:01:15,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:01:15,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:01:15,137 INFO L87 Difference]: Start difference. First operand 3618 states and 5997 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:18,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:01:18,463 INFO L93 Difference]: Finished difference Result 9558 states and 15695 transitions. [2023-04-02 07:01:18,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:01:18,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 233 [2023-04-02 07:01:18,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:01:18,494 INFO L225 Difference]: With dead ends: 9558 [2023-04-02 07:01:18,494 INFO L226 Difference]: Without dead ends: 6492 [2023-04-02 07:01:18,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:01:18,502 INFO L413 NwaCegarLoop]: 1331 mSDtfsCounter, 308 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-02 07:01:18,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 2610 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-02 07:01:18,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6492 states. [2023-04-02 07:01:18,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6492 to 6490. [2023-04-02 07:01:18,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6490 states, 6486 states have (on average 1.6419981498612395) internal successors, (10650), 6486 states have internal predecessors, (10650), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:18,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6490 states to 6490 states and 10653 transitions. [2023-04-02 07:01:18,702 INFO L78 Accepts]: Start accepts. Automaton has 6490 states and 10653 transitions. Word has length 233 [2023-04-02 07:01:18,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:01:18,702 INFO L495 AbstractCegarLoop]: Abstraction has 6490 states and 10653 transitions. [2023-04-02 07:01:18,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:18,702 INFO L276 IsEmpty]: Start isEmpty. Operand 6490 states and 10653 transitions. [2023-04-02 07:01:18,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-04-02 07:01:18,706 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:01:18,707 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:01:18,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 07:01:18,707 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:01:18,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:01:18,708 INFO L85 PathProgramCache]: Analyzing trace with hash -2021563115, now seen corresponding path program 1 times [2023-04-02 07:01:18,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:01:18,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082510387] [2023-04-02 07:01:18,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:01:18,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:01:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:19,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:01:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:19,485 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 07:01:19,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:01:19,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082510387] [2023-04-02 07:01:19,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082510387] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:01:19,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:01:19,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 07:01:19,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572728530] [2023-04-02 07:01:19,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:01:19,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 07:01:19,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:01:19,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 07:01:19,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 07:01:19,488 INFO L87 Difference]: Start difference. First operand 6490 states and 10653 transitions. Second operand has 8 states, 8 states have (on average 29.25) internal successors, (234), 7 states have internal predecessors, (234), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:24,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:01:24,206 INFO L93 Difference]: Finished difference Result 39910 states and 65495 transitions. [2023-04-02 07:01:24,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 07:01:24,207 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 29.25) internal successors, (234), 7 states have internal predecessors, (234), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 237 [2023-04-02 07:01:24,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:01:24,297 INFO L225 Difference]: With dead ends: 39910 [2023-04-02 07:01:24,297 INFO L226 Difference]: Without dead ends: 33916 [2023-04-02 07:01:24,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2023-04-02 07:01:24,319 INFO L413 NwaCegarLoop]: 1335 mSDtfsCounter, 3874 mSDsluCounter, 12066 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3874 SdHoareTripleChecker+Valid, 13401 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-02 07:01:24,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3874 Valid, 13401 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1557 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-02 07:01:24,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33916 states. [2023-04-02 07:01:25,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33916 to 12089. [2023-04-02 07:01:25,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12089 states, 12085 states have (on average 1.643111294993794) internal successors, (19857), 12085 states have internal predecessors, (19857), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:25,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12089 states to 12089 states and 19860 transitions. [2023-04-02 07:01:25,219 INFO L78 Accepts]: Start accepts. Automaton has 12089 states and 19860 transitions. Word has length 237 [2023-04-02 07:01:25,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:01:25,220 INFO L495 AbstractCegarLoop]: Abstraction has 12089 states and 19860 transitions. [2023-04-02 07:01:25,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.25) internal successors, (234), 7 states have internal predecessors, (234), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:25,220 INFO L276 IsEmpty]: Start isEmpty. Operand 12089 states and 19860 transitions. [2023-04-02 07:01:25,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-04-02 07:01:25,230 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:01:25,230 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:01:25,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 07:01:25,230 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:01:25,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:01:25,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1685326888, now seen corresponding path program 1 times [2023-04-02 07:01:25,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:01:25,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108444975] [2023-04-02 07:01:25,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:01:25,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:01:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:26,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:01:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:26,030 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 07:01:26,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:01:26,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108444975] [2023-04-02 07:01:26,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108444975] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:01:26,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:01:26,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 07:01:26,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258101535] [2023-04-02 07:01:26,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:01:26,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 07:01:26,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:01:26,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 07:01:26,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:01:26,033 INFO L87 Difference]: Start difference. First operand 12089 states and 19860 transitions. Second operand has 5 states, 5 states have (on average 47.0) internal successors, (235), 4 states have internal predecessors, (235), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:30,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:01:30,615 INFO L93 Difference]: Finished difference Result 35520 states and 58308 transitions. [2023-04-02 07:01:30,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 07:01:30,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.0) internal successors, (235), 4 states have internal predecessors, (235), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 238 [2023-04-02 07:01:30,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:01:30,671 INFO L225 Difference]: With dead ends: 35520 [2023-04-02 07:01:30,671 INFO L226 Difference]: Without dead ends: 23983 [2023-04-02 07:01:30,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-02 07:01:30,696 INFO L413 NwaCegarLoop]: 1339 mSDtfsCounter, 1058 mSDsluCounter, 2681 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 4020 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-02 07:01:30,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 4020 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-02 07:01:30,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23983 states. [2023-04-02 07:01:31,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23983 to 17988. [2023-04-02 07:01:31,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17988 states, 17984 states have (on average 1.6401801601423487) internal successors, (29497), 17984 states have internal predecessors, (29497), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:31,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17988 states to 17988 states and 29500 transitions. [2023-04-02 07:01:31,816 INFO L78 Accepts]: Start accepts. Automaton has 17988 states and 29500 transitions. Word has length 238 [2023-04-02 07:01:31,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:01:31,816 INFO L495 AbstractCegarLoop]: Abstraction has 17988 states and 29500 transitions. [2023-04-02 07:01:31,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.0) internal successors, (235), 4 states have internal predecessors, (235), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:31,816 INFO L276 IsEmpty]: Start isEmpty. Operand 17988 states and 29500 transitions. [2023-04-02 07:01:31,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-04-02 07:01:31,826 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:01:31,826 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, 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, 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, 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, 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, 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 07:01:31,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 07:01:31,826 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:01:31,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:01:31,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1207694305, now seen corresponding path program 1 times [2023-04-02 07:01:31,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:01:31,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214552837] [2023-04-02 07:01:31,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:01:31,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:01:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:32,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:01:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:32,460 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 07:01:32,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:01:32,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214552837] [2023-04-02 07:01:32,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214552837] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:01:32,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:01:32,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:01:32,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267743638] [2023-04-02 07:01:32,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:01:32,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:01:32,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:01:32,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:01:32,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:01:32,462 INFO L87 Difference]: Start difference. First operand 17988 states and 29500 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:38,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:01:38,378 INFO L93 Difference]: Finished difference Result 39683 states and 64940 transitions. [2023-04-02 07:01:38,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:01:38,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 239 [2023-04-02 07:01:38,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:01:38,448 INFO L225 Difference]: With dead ends: 39683 [2023-04-02 07:01:38,452 INFO L226 Difference]: Without dead ends: 27655 [2023-04-02 07:01:38,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:01:38,485 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 341 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 1628 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 2896 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-04-02 07:01:38,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 2896 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1628 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-04-02 07:01:38,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27655 states. [2023-04-02 07:01:40,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27655 to 27653. [2023-04-02 07:01:40,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27653 states, 27649 states have (on average 1.63250027125755) internal successors, (45137), 27649 states have internal predecessors, (45137), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:40,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27653 states to 27653 states and 45140 transitions. [2023-04-02 07:01:40,544 INFO L78 Accepts]: Start accepts. Automaton has 27653 states and 45140 transitions. Word has length 239 [2023-04-02 07:01:40,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:01:40,544 INFO L495 AbstractCegarLoop]: Abstraction has 27653 states and 45140 transitions. [2023-04-02 07:01:40,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:40,545 INFO L276 IsEmpty]: Start isEmpty. Operand 27653 states and 45140 transitions. [2023-04-02 07:01:40,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-04-02 07:01:40,550 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:01:40,550 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, 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, 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, 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, 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, 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 07:01:40,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 07:01:40,550 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:01:40,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:01:40,551 INFO L85 PathProgramCache]: Analyzing trace with hash -448862261, now seen corresponding path program 1 times [2023-04-02 07:01:40,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:01:40,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208046318] [2023-04-02 07:01:40,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:01:40,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:01:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:41,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:01:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:41,234 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 07:01:41,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:01:41,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208046318] [2023-04-02 07:01:41,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208046318] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:01:41,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:01:41,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:01:41,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384288906] [2023-04-02 07:01:41,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:01:41,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:01:41,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:01:41,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:01:41,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:01:41,237 INFO L87 Difference]: Start difference. First operand 27653 states and 45140 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:47,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:01:47,427 INFO L93 Difference]: Finished difference Result 53186 states and 86765 transitions. [2023-04-02 07:01:47,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:01:47,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 239 [2023-04-02 07:01:47,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:01:47,494 INFO L225 Difference]: With dead ends: 53186 [2023-04-02 07:01:47,495 INFO L226 Difference]: Without dead ends: 38936 [2023-04-02 07:01:47,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:01:47,517 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 325 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-02 07:01:47,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 2792 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1522 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-02 07:01:47,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38936 states. [2023-04-02 07:01:50,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38936 to 38934. [2023-04-02 07:01:50,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38934 states, 38930 states have (on average 1.6266375545851528) internal successors, (63325), 38930 states have internal predecessors, (63325), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:50,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38934 states to 38934 states and 63328 transitions. [2023-04-02 07:01:50,377 INFO L78 Accepts]: Start accepts. Automaton has 38934 states and 63328 transitions. Word has length 239 [2023-04-02 07:01:50,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:01:50,378 INFO L495 AbstractCegarLoop]: Abstraction has 38934 states and 63328 transitions. [2023-04-02 07:01:50,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:50,378 INFO L276 IsEmpty]: Start isEmpty. Operand 38934 states and 63328 transitions. [2023-04-02 07:01:50,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-04-02 07:01:50,381 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:01:50,382 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, 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, 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, 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, 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, 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 07:01:50,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 07:01:50,382 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:01:50,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:01:50,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1862898657, now seen corresponding path program 1 times [2023-04-02 07:01:50,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:01:50,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516603217] [2023-04-02 07:01:50,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:01:50,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:01:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:51,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:01:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:51,071 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 07:01:51,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:01:51,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516603217] [2023-04-02 07:01:51,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516603217] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:01:51,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:01:51,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:01:51,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592100262] [2023-04-02 07:01:51,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:01:51,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:01:51,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:01:51,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:01:51,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:01:51,073 INFO L87 Difference]: Start difference. First operand 38934 states and 63328 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:58,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:01:58,234 INFO L93 Difference]: Finished difference Result 74646 states and 121361 transitions. [2023-04-02 07:01:58,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:01:58,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 239 [2023-04-02 07:01:58,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:01:58,351 INFO L225 Difference]: With dead ends: 74646 [2023-04-02 07:01:58,352 INFO L226 Difference]: Without dead ends: 54552 [2023-04-02 07:01:58,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:01:58,386 INFO L413 NwaCegarLoop]: 1472 mSDtfsCounter, 317 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2749 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-02 07:01:58,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 2749 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-02 07:01:58,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54552 states. [2023-04-02 07:02:02,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54552 to 54550. [2023-04-02 07:02:02,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54550 states, 54546 states have (on average 1.6203754629120375) internal successors, (88385), 54546 states have internal predecessors, (88385), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:02,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54550 states to 54550 states and 88388 transitions. [2023-04-02 07:02:02,377 INFO L78 Accepts]: Start accepts. Automaton has 54550 states and 88388 transitions. Word has length 239 [2023-04-02 07:02:02,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:02:02,377 INFO L495 AbstractCegarLoop]: Abstraction has 54550 states and 88388 transitions. [2023-04-02 07:02:02,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:02,378 INFO L276 IsEmpty]: Start isEmpty. Operand 54550 states and 88388 transitions. [2023-04-02 07:02:02,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-04-02 07:02:02,383 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:02:02,383 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, 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, 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, 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, 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, 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 07:02:02,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 07:02:02,384 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:02:02,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:02:02,385 INFO L85 PathProgramCache]: Analyzing trace with hash 531523959, now seen corresponding path program 1 times [2023-04-02 07:02:02,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:02:02,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979574149] [2023-04-02 07:02:02,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:02:02,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:02:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:02:02,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:02:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:02:03,015 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 07:02:03,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:02:03,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979574149] [2023-04-02 07:02:03,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979574149] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:02:03,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:02:03,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:02:03,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307625716] [2023-04-02 07:02:03,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:02:03,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:02:03,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:02:03,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:02:03,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:02:03,017 INFO L87 Difference]: Start difference. First operand 54550 states and 88388 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:12,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:02:12,169 INFO L93 Difference]: Finished difference Result 104234 states and 168829 transitions. [2023-04-02 07:02:12,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:02:12,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 239 [2023-04-02 07:02:12,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:02:12,316 INFO L225 Difference]: With dead ends: 104234 [2023-04-02 07:02:12,317 INFO L226 Difference]: Without dead ends: 76014 [2023-04-02 07:02:12,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:02:12,357 INFO L413 NwaCegarLoop]: 1428 mSDtfsCounter, 309 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 2706 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-02 07:02:12,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 2706 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1434 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-02 07:02:12,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76014 states. [2023-04-02 07:02:18,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76014 to 76012. [2023-04-02 07:02:18,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76012 states, 76008 states have (on average 1.6135012103989055) internal successors, (122639), 76008 states have internal predecessors, (122639), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:18,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76012 states to 76012 states and 122642 transitions. [2023-04-02 07:02:18,531 INFO L78 Accepts]: Start accepts. Automaton has 76012 states and 122642 transitions. Word has length 239 [2023-04-02 07:02:18,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:02:18,531 INFO L495 AbstractCegarLoop]: Abstraction has 76012 states and 122642 transitions. [2023-04-02 07:02:18,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:18,531 INFO L276 IsEmpty]: Start isEmpty. Operand 76012 states and 122642 transitions. [2023-04-02 07:02:18,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-04-02 07:02:18,535 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:02:18,536 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, 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, 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, 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, 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, 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 07:02:18,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 07:02:18,536 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:02:18,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:02:18,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1230936779, now seen corresponding path program 1 times [2023-04-02 07:02:18,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:02:18,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730189553] [2023-04-02 07:02:18,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:02:18,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:02:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:02:19,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:02:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:02:19,150 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 07:02:19,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:02:19,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730189553] [2023-04-02 07:02:19,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730189553] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:02:19,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:02:19,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:02:19,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510811533] [2023-04-02 07:02:19,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:02:19,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:02:19,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:02:19,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:02:19,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:02:19,152 INFO L87 Difference]: Start difference. First operand 76012 states and 122642 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:31,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:02:31,208 INFO L93 Difference]: Finished difference Result 144650 states and 233290 transitions. [2023-04-02 07:02:31,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:02:31,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 239 [2023-04-02 07:02:31,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:02:31,424 INFO L225 Difference]: With dead ends: 144650 [2023-04-02 07:02:31,424 INFO L226 Difference]: Without dead ends: 105072 [2023-04-02 07:02:31,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:02:31,476 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 333 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 1589 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-02 07:02:31,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 2858 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1589 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-02 07:02:31,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105072 states. [2023-04-02 07:02:39,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105072 to 105070. [2023-04-02 07:02:39,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105070 states, 105066 states have (on average 1.605781128052843) internal successors, (168713), 105066 states have internal predecessors, (168713), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:40,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105070 states to 105070 states and 168716 transitions. [2023-04-02 07:02:40,120 INFO L78 Accepts]: Start accepts. Automaton has 105070 states and 168716 transitions. Word has length 239 [2023-04-02 07:02:40,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:02:40,121 INFO L495 AbstractCegarLoop]: Abstraction has 105070 states and 168716 transitions. [2023-04-02 07:02:40,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:40,121 INFO L276 IsEmpty]: Start isEmpty. Operand 105070 states and 168716 transitions. [2023-04-02 07:02:40,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-04-02 07:02:40,123 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:02:40,123 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, 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, 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, 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, 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, 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 07:02:40,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 07:02:40,123 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:02:40,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:02:40,124 INFO L85 PathProgramCache]: Analyzing trace with hash 891771267, now seen corresponding path program 1 times [2023-04-02 07:02:40,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:02:40,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151650982] [2023-04-02 07:02:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:02:40,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:02:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:02:41,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:02:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:02:41,603 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 07:02:41,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:02:41,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151650982] [2023-04-02 07:02:41,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151650982] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:02:41,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:02:41,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 07:02:41,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012935773] [2023-04-02 07:02:41,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:02:41,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 07:02:41,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:02:41,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 07:02:41,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 07:02:41,605 INFO L87 Difference]: Start difference. First operand 105070 states and 168716 transitions. Second operand has 6 states, 6 states have (on average 40.833333333333336) internal successors, (245), 5 states have internal predecessors, (245), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:58,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:02:58,604 INFO L93 Difference]: Finished difference Result 173750 states and 277711 transitions. [2023-04-02 07:02:58,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 07:02:58,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.833333333333336) internal successors, (245), 5 states have internal predecessors, (245), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 248 [2023-04-02 07:02:58,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:02:58,972 INFO L225 Difference]: With dead ends: 173750 [2023-04-02 07:02:58,972 INFO L226 Difference]: Without dead ends: 173748 [2023-04-02 07:02:59,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 07:02:59,022 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 702 mSDsluCounter, 4235 mSDsCounter, 0 mSdLazyCounter, 1599 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 5804 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-02 07:02:59,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 5804 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1599 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-02 07:02:59,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173748 states. [2023-04-02 07:03:09,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173748 to 106038. [2023-04-02 07:03:09,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106038 states, 106034 states have (on average 1.597959145179848) internal successors, (169438), 106034 states have internal predecessors, (169438), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:03:09,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106038 states to 106038 states and 169441 transitions. [2023-04-02 07:03:09,816 INFO L78 Accepts]: Start accepts. Automaton has 106038 states and 169441 transitions. Word has length 248 [2023-04-02 07:03:09,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:03:09,817 INFO L495 AbstractCegarLoop]: Abstraction has 106038 states and 169441 transitions. [2023-04-02 07:03:09,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.833333333333336) internal successors, (245), 5 states have internal predecessors, (245), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:03:09,817 INFO L276 IsEmpty]: Start isEmpty. Operand 106038 states and 169441 transitions. [2023-04-02 07:03:09,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-04-02 07:03:09,825 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:03:09,826 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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 07:03:09,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 07:03:09,826 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:03:09,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:03:09,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1398576104, now seen corresponding path program 1 times [2023-04-02 07:03:09,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:03:09,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869827245] [2023-04-02 07:03:09,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:03:09,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:03:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:03:10,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:03:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:03:10,636 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 07:03:10,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:03:10,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869827245] [2023-04-02 07:03:10,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869827245] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:03:10,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:03:10,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 07:03:10,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182231308] [2023-04-02 07:03:10,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:03:10,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 07:03:10,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:03:10,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 07:03:10,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 07:03:10,637 INFO L87 Difference]: Start difference. First operand 106038 states and 169441 transitions. Second operand has 8 states, 8 states have (on average 36.25) internal successors, (290), 7 states have internal predecessors, (290), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:03:54,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:03:54,460 INFO L93 Difference]: Finished difference Result 416102 states and 665195 transitions. [2023-04-02 07:03:54,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 07:03:54,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 36.25) internal successors, (290), 7 states have internal predecessors, (290), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 294 [2023-04-02 07:03:54,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:03:55,575 INFO L225 Difference]: With dead ends: 416102 [2023-04-02 07:03:55,575 INFO L226 Difference]: Without dead ends: 373548 [2023-04-02 07:03:55,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 07:03:55,717 INFO L413 NwaCegarLoop]: 1690 mSDtfsCounter, 2872 mSDsluCounter, 7723 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2872 SdHoareTripleChecker+Valid, 9413 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-04-02 07:03:55,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2872 Valid, 9413 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1840 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-04-02 07:03:56,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373548 states. [2023-04-02 07:04:18,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373548 to 179454. [2023-04-02 07:04:18,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179454 states, 179450 states have (on average 1.5946280300919475) internal successors, (286156), 179450 states have internal predecessors, (286156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:04:19,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179454 states to 179454 states and 286159 transitions. [2023-04-02 07:04:19,414 INFO L78 Accepts]: Start accepts. Automaton has 179454 states and 286159 transitions. Word has length 294 [2023-04-02 07:04:19,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:04:19,415 INFO L495 AbstractCegarLoop]: Abstraction has 179454 states and 286159 transitions. [2023-04-02 07:04:19,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.25) internal successors, (290), 7 states have internal predecessors, (290), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:04:19,415 INFO L276 IsEmpty]: Start isEmpty. Operand 179454 states and 286159 transitions. [2023-04-02 07:04:19,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-04-02 07:04:19,424 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:04:19,424 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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 07:04:19,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 07:04:19,424 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:04:19,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:04:19,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2137559148, now seen corresponding path program 1 times [2023-04-02 07:04:19,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:04:19,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443939736] [2023-04-02 07:04:19,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:04:19,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:04:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:04:20,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:04:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:04:20,411 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 07:04:20,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:04:20,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443939736] [2023-04-02 07:04:20,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443939736] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:04:20,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:04:20,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 07:04:20,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728311847] [2023-04-02 07:04:20,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:04:20,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 07:04:20,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:04:20,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 07:04:20,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 07:04:20,413 INFO L87 Difference]: Start difference. First operand 179454 states and 286159 transitions. Second operand has 8 states, 8 states have (on average 34.25) internal successors, (274), 7 states have internal predecessors, (274), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)