/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.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 02:03:08,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 02:03:08,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 02:03:08,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-31 02:03:08,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 02:03:08,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 02:03:08,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 02:03:08,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 02:03:08,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 02:03:08,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 02:03:08,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 02:03:08,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 02:03:08,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 02:03:08,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 02:03:08,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 02:03:08,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 02:03:08,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 02:03:08,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 02:03:08,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 02:03:08,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 02:03:08,591 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 [2023-03-31 02:03:08,615 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 02:03:08,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 02:03:08,615 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 02:03:08,616 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 02:03:08,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 02:03:08,617 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 02:03:08,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 02:03:08,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 02:03:08,617 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 02:03:08,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 02:03:08,618 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 02:03:08,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 02:03:08,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 02:03:08,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 02:03:08,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 02:03:08,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 02:03:08,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 02:03:08,619 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 02:03:08,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 02:03:08,619 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 02:03:08,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 02:03:08,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 02:03:08,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 02:03:08,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 02:03:08,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 02:03:08,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 02:03:08,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 02:03:08,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 02:03:08,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 02:03:08,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 02:03:08,620 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 02:03:08,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 02:03:08,621 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 02:03:08,621 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 02:03:08,621 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 02:03:08,621 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 02:03:08,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 02:03:08,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 02:03:08,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 02:03:08,836 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 02:03:08,836 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 02:03:08,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-03-31 02:03:10,010 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 02:03:10,253 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 02:03:10,253 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-03-31 02:03:10,267 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b7d3d157/a02378b560ba498a84602fd2c5f36f1b/FLAGd0ba9f0ef [2023-03-31 02:03:10,286 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b7d3d157/a02378b560ba498a84602fd2c5f36f1b [2023-03-31 02:03:10,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 02:03:10,291 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 02:03:10,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 02:03:10,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 02:03:10,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 02:03:10,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 02:03:10" (1/1) ... [2023-03-31 02:03:10,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f374b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:10, skipping insertion in model container [2023-03-31 02:03:10,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 02:03:10" (1/1) ... [2023-03-31 02:03:10,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 02:03:10,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 02:03:10,724 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.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[22673,22686] [2023-03-31 02:03:10,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 02:03:10,890 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 02:03:11,034 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.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[22673,22686] [2023-03-31 02:03:11,091 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 02:03:11,113 INFO L208 MainTranslator]: Completed translation [2023-03-31 02:03:11,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:11 WrapperNode [2023-03-31 02:03:11,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 02:03:11,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 02:03:11,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 02:03:11,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 02:03:11,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:11" (1/1) ... [2023-03-31 02:03:11,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:11" (1/1) ... [2023-03-31 02:03:11,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:11" (1/1) ... [2023-03-31 02:03:11,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:11" (1/1) ... [2023-03-31 02:03:11,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:11" (1/1) ... [2023-03-31 02:03:11,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:11" (1/1) ... [2023-03-31 02:03:11,199 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:11" (1/1) ... [2023-03-31 02:03:11,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:11" (1/1) ... [2023-03-31 02:03:11,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 02:03:11,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 02:03:11,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 02:03:11,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 02:03:11,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:11" (1/1) ... [2023-03-31 02:03:11,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 02:03:11,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 02:03:11,277 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) [2023-03-31 02:03:11,295 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 [2023-03-31 02:03:11,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 02:03:11,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 02:03:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 02:03:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 02:03:11,312 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 02:03:11,312 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 02:03:11,312 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 02:03:11,312 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 02:03:11,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 02:03:11,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 02:03:11,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 02:03:11,312 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 02:03:11,312 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 02:03:11,312 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 02:03:11,312 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 02:03:11,312 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 02:03:11,312 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 02:03:11,312 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 02:03:11,312 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 02:03:11,313 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-03-31 02:03:11,313 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 02:03:11,313 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 02:03:11,313 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 02:03:11,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 02:03:11,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 02:03:11,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 02:03:11,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 02:03:11,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 02:03:11,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 02:03:11,546 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 02:03:11,550 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 02:03:12,816 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 02:03:12,825 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 02:03:12,825 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 02:03:12,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 02:03:12 BoogieIcfgContainer [2023-03-31 02:03:12,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 02:03:12,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 02:03:12,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 02:03:12,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 02:03:12,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 02:03:10" (1/3) ... [2023-03-31 02:03:12,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@872c7bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 02:03:12, skipping insertion in model container [2023-03-31 02:03:12,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:03:11" (2/3) ... [2023-03-31 02:03:12,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@872c7bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 02:03:12, skipping insertion in model container [2023-03-31 02:03:12,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 02:03:12" (3/3) ... [2023-03-31 02:03:12,832 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-03-31 02:03:12,843 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 02:03:12,843 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 02:03:12,883 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 02:03:12,887 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;@4dc7fc76, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 02:03:12,887 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 02:03:12,892 INFO L276 IsEmpty]: Start isEmpty. Operand has 763 states, 749 states have (on average 1.8317757009345794) internal successors, (1372), 758 states have internal predecessors, (1372), 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) [2023-03-31 02:03:12,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-03-31 02:03:12,911 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:03:12,911 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] [2023-03-31 02:03:12,912 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:03:12,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:03:12,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1811357682, now seen corresponding path program 1 times [2023-03-31 02:03:12,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:03:12,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160847074] [2023-03-31 02:03:12,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:03:12,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:03:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:14,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:03:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:14,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:03:14,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:03:14,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160847074] [2023-03-31 02:03:14,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160847074] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:03:14,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:03:14,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:03:14,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921438514] [2023-03-31 02:03:14,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:03:14,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:03:14,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:03:14,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:03:14,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:03:14,200 INFO L87 Difference]: Start difference. First operand has 763 states, 749 states have (on average 1.8317757009345794) internal successors, (1372), 758 states have internal predecessors, (1372), 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 48.5) internal successors, (194), 3 states have internal predecessors, (194), 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) [2023-03-31 02:03:18,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:03:18,062 INFO L93 Difference]: Finished difference Result 1209 states and 2106 transitions. [2023-03-31 02:03:18,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:03:18,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 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 197 [2023-03-31 02:03:18,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:03:18,079 INFO L225 Difference]: With dead ends: 1209 [2023-03-31 02:03:18,079 INFO L226 Difference]: Without dead ends: 955 [2023-03-31 02:03:18,083 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 [2023-03-31 02:03:18,085 INFO L413 NwaCegarLoop]: 1375 mSDtfsCounter, 376 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-03-31 02:03:18,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 2674 Invalid, 1406 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-03-31 02:03:18,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2023-03-31 02:03:18,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 953. [2023-03-31 02:03:18,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 949 states have (on average 1.7355110642781875) internal successors, (1647), 949 states have internal predecessors, (1647), 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) [2023-03-31 02:03:18,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1650 transitions. [2023-03-31 02:03:18,180 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1650 transitions. Word has length 197 [2023-03-31 02:03:18,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:03:18,181 INFO L495 AbstractCegarLoop]: Abstraction has 953 states and 1650 transitions. [2023-03-31 02:03:18,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 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) [2023-03-31 02:03:18,181 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1650 transitions. [2023-03-31 02:03:18,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-03-31 02:03:18,186 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:03:18,186 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] [2023-03-31 02:03:18,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 02:03:18,187 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:03:18,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:03:18,187 INFO L85 PathProgramCache]: Analyzing trace with hash 2145842579, now seen corresponding path program 1 times [2023-03-31 02:03:18,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:03:18,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676662301] [2023-03-31 02:03:18,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:03:18,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:03:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:19,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:03:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:19,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:03:19,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:03:19,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676662301] [2023-03-31 02:03:19,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676662301] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:03:19,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:03:19,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:03:19,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750788097] [2023-03-31 02:03:19,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:03:19,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:03:19,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:03:19,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:03:19,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:03:19,080 INFO L87 Difference]: Start difference. First operand 953 states and 1650 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 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) [2023-03-31 02:03:22,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:03:22,593 INFO L93 Difference]: Finished difference Result 1771 states and 3002 transitions. [2023-03-31 02:03:22,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:03:22,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 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 201 [2023-03-31 02:03:22,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:03:22,601 INFO L225 Difference]: With dead ends: 1771 [2023-03-31 02:03:22,601 INFO L226 Difference]: Without dead ends: 1350 [2023-03-31 02:03:22,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:03:22,604 INFO L413 NwaCegarLoop]: 1311 mSDtfsCounter, 332 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-03-31 02:03:22,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 2587 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-03-31 02:03:22,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2023-03-31 02:03:22,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1348. [2023-03-31 02:03:22,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1344 states have (on average 1.7098214285714286) internal successors, (2298), 1344 states have internal predecessors, (2298), 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) [2023-03-31 02:03:22,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 2301 transitions. [2023-03-31 02:03:22,701 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 2301 transitions. Word has length 201 [2023-03-31 02:03:22,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:03:22,702 INFO L495 AbstractCegarLoop]: Abstraction has 1348 states and 2301 transitions. [2023-03-31 02:03:22,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 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) [2023-03-31 02:03:22,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 2301 transitions. [2023-03-31 02:03:22,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-03-31 02:03:22,708 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:03:22,708 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] [2023-03-31 02:03:22,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 02:03:22,709 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:03:22,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:03:22,709 INFO L85 PathProgramCache]: Analyzing trace with hash -205945448, now seen corresponding path program 1 times [2023-03-31 02:03:22,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:03:22,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692070415] [2023-03-31 02:03:22,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:03:22,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:03:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:23,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:03:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:23,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:03:23,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:03:23,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692070415] [2023-03-31 02:03:23,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692070415] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:03:23,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:03:23,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:03:23,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617123408] [2023-03-31 02:03:23,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:03:23,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:03:23,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:03:23,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:03:23,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:03:23,457 INFO L87 Difference]: Start difference. First operand 1348 states and 2301 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 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) [2023-03-31 02:03:26,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:03:26,879 INFO L93 Difference]: Finished difference Result 2932 states and 4911 transitions. [2023-03-31 02:03:26,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:03:26,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 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 205 [2023-03-31 02:03:26,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:03:26,889 INFO L225 Difference]: With dead ends: 2932 [2023-03-31 02:03:26,890 INFO L226 Difference]: Without dead ends: 2116 [2023-03-31 02:03:26,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:03:26,902 INFO L413 NwaCegarLoop]: 1311 mSDtfsCounter, 324 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2588 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-03-31 02:03:26,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 2588 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-03-31 02:03:26,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2023-03-31 02:03:26,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 2114. [2023-03-31 02:03:26,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2114 states, 2110 states have (on average 1.6843601895734597) internal successors, (3554), 2110 states have internal predecessors, (3554), 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) [2023-03-31 02:03:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3557 transitions. [2023-03-31 02:03:26,967 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3557 transitions. Word has length 205 [2023-03-31 02:03:26,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:03:26,967 INFO L495 AbstractCegarLoop]: Abstraction has 2114 states and 3557 transitions. [2023-03-31 02:03:26,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 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) [2023-03-31 02:03:26,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3557 transitions. [2023-03-31 02:03:26,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-03-31 02:03:26,971 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:03:26,971 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] [2023-03-31 02:03:26,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 02:03:26,971 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:03:26,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:03:26,972 INFO L85 PathProgramCache]: Analyzing trace with hash 464481053, now seen corresponding path program 1 times [2023-03-31 02:03:26,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:03:26,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609881222] [2023-03-31 02:03:26,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:03:26,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:03:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:27,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:03:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:03:27,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:03:27,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609881222] [2023-03-31 02:03:27,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609881222] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:03:27,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:03:27,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:03:27,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204588830] [2023-03-31 02:03:27,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:03:27,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:03:27,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:03:27,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:03:27,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:03:27,846 INFO L87 Difference]: Start difference. First operand 2114 states and 3557 transitions. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 3 states have internal predecessors, (206), 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) [2023-03-31 02:03:31,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:03:31,172 INFO L93 Difference]: Finished difference Result 5182 states and 8591 transitions. [2023-03-31 02:03:31,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:03:31,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 3 states have internal predecessors, (206), 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 209 [2023-03-31 02:03:31,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:03:31,185 INFO L225 Difference]: With dead ends: 5182 [2023-03-31 02:03:31,185 INFO L226 Difference]: Without dead ends: 3600 [2023-03-31 02:03:31,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:03:31,198 INFO L413 NwaCegarLoop]: 1311 mSDtfsCounter, 316 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2589 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-03-31 02:03:31,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 2589 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-03-31 02:03:31,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3600 states. [2023-03-31 02:03:31,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3600 to 3598. [2023-03-31 02:03:31,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 3594 states have (on average 1.6622148024485253) internal successors, (5974), 3594 states have internal predecessors, (5974), 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) [2023-03-31 02:03:31,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 5977 transitions. [2023-03-31 02:03:31,333 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 5977 transitions. Word has length 209 [2023-03-31 02:03:31,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:03:31,334 INFO L495 AbstractCegarLoop]: Abstraction has 3598 states and 5977 transitions. [2023-03-31 02:03:31,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 3 states have internal predecessors, (206), 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) [2023-03-31 02:03:31,334 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 5977 transitions. [2023-03-31 02:03:31,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-03-31 02:03:31,338 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:03:31,338 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] [2023-03-31 02:03:31,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 02:03:31,338 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:03:31,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:03:31,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1717371170, now seen corresponding path program 1 times [2023-03-31 02:03:31,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:03:31,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155998997] [2023-03-31 02:03:31,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:03:31,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:03:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:32,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:03:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:32,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:03:32,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:03:32,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155998997] [2023-03-31 02:03:32,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155998997] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:03:32,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:03:32,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:03:32,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704950083] [2023-03-31 02:03:32,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:03:32,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:03:32,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:03:32,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:03:32,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:03:32,119 INFO L87 Difference]: Start difference. First operand 3598 states and 5977 transitions. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 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) [2023-03-31 02:03:35,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:03:35,451 INFO L93 Difference]: Finished difference Result 9538 states and 15675 transitions. [2023-03-31 02:03:35,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:03:35,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 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 213 [2023-03-31 02:03:35,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:03:35,472 INFO L225 Difference]: With dead ends: 9538 [2023-03-31 02:03:35,472 INFO L226 Difference]: Without dead ends: 6472 [2023-03-31 02:03:35,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:03:35,480 INFO L413 NwaCegarLoop]: 1311 mSDtfsCounter, 308 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-03-31 02:03:35,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 2590 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-03-31 02:03:35,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6472 states. [2023-03-31 02:03:35,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6472 to 6470. [2023-03-31 02:03:35,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6470 states, 6466 states have (on average 1.6439839158676153) internal successors, (10630), 6466 states have internal predecessors, (10630), 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) [2023-03-31 02:03:35,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6470 states to 6470 states and 10633 transitions. [2023-03-31 02:03:35,702 INFO L78 Accepts]: Start accepts. Automaton has 6470 states and 10633 transitions. Word has length 213 [2023-03-31 02:03:35,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:03:35,703 INFO L495 AbstractCegarLoop]: Abstraction has 6470 states and 10633 transitions. [2023-03-31 02:03:35,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 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) [2023-03-31 02:03:35,703 INFO L276 IsEmpty]: Start isEmpty. Operand 6470 states and 10633 transitions. [2023-03-31 02:03:35,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-03-31 02:03:35,712 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:03:35,712 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] [2023-03-31 02:03:35,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 02:03:35,713 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:03:35,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:03:35,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1841552729, now seen corresponding path program 1 times [2023-03-31 02:03:35,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:03:35,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817290101] [2023-03-31 02:03:35,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:03:35,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:03:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:36,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:03:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:36,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:03:36,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:03:36,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817290101] [2023-03-31 02:03:36,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817290101] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:03:36,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:03:36,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 02:03:36,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296019431] [2023-03-31 02:03:36,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:03:36,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 02:03:36,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:03:36,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 02:03:36,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-03-31 02:03:36,697 INFO L87 Difference]: Start difference. First operand 6470 states and 10633 transitions. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 7 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) [2023-03-31 02:03:41,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:03:41,437 INFO L93 Difference]: Finished difference Result 39890 states and 65475 transitions. [2023-03-31 02:03:41,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 02:03:41,438 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 7 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 [2023-03-31 02:03:41,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:03:41,528 INFO L225 Difference]: With dead ends: 39890 [2023-03-31 02:03:41,528 INFO L226 Difference]: Without dead ends: 33896 [2023-03-31 02:03:41,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2023-03-31 02:03:41,550 INFO L413 NwaCegarLoop]: 1319 mSDtfsCounter, 3581 mSDsluCounter, 13371 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3581 SdHoareTripleChecker+Valid, 14690 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-03-31 02:03:41,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3581 Valid, 14690 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-03-31 02:03:41,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33896 states. [2023-03-31 02:03:42,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33896 to 12069. [2023-03-31 02:03:42,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12069 states, 12065 states have (on average 1.6441773725652715) internal successors, (19837), 12065 states have internal predecessors, (19837), 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) [2023-03-31 02:03:42,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12069 states to 12069 states and 19840 transitions. [2023-03-31 02:03:42,584 INFO L78 Accepts]: Start accepts. Automaton has 12069 states and 19840 transitions. Word has length 217 [2023-03-31 02:03:42,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:03:42,585 INFO L495 AbstractCegarLoop]: Abstraction has 12069 states and 19840 transitions. [2023-03-31 02:03:42,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 7 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) [2023-03-31 02:03:42,585 INFO L276 IsEmpty]: Start isEmpty. Operand 12069 states and 19840 transitions. [2023-03-31 02:03:42,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-03-31 02:03:42,592 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:03:42,592 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] [2023-03-31 02:03:42,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 02:03:42,592 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:03:42,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:03:42,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1324285798, now seen corresponding path program 1 times [2023-03-31 02:03:42,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:03:42,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291445060] [2023-03-31 02:03:42,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:03:42,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:03:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:43,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:03:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:43,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:03:43,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:03:43,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291445060] [2023-03-31 02:03:43,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291445060] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:03:43,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:03:43,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:03:43,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837644211] [2023-03-31 02:03:43,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:03:43,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 02:03:43,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:03:43,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 02:03:43,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:03:43,271 INFO L87 Difference]: Start difference. First operand 12069 states and 19840 transitions. Second operand has 5 states, 5 states have (on average 43.0) internal successors, (215), 4 states have internal predecessors, (215), 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) [2023-03-31 02:03:47,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:03:47,947 INFO L93 Difference]: Finished difference Result 35500 states and 58288 transitions. [2023-03-31 02:03:47,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 02:03:47,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 4 states have internal predecessors, (215), 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 218 [2023-03-31 02:03:47,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:03:47,991 INFO L225 Difference]: With dead ends: 35500 [2023-03-31 02:03:47,991 INFO L226 Difference]: Without dead ends: 23963 [2023-03-31 02:03:48,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-03-31 02:03:48,010 INFO L413 NwaCegarLoop]: 1319 mSDtfsCounter, 1058 mSDsluCounter, 2641 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 3960 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-03-31 02:03:48,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 3960 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-03-31 02:03:48,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23963 states. [2023-03-31 02:03:49,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23963 to 17968. [2023-03-31 02:03:49,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17968 states, 17964 states have (on average 1.640892896904921) internal successors, (29477), 17964 states have internal predecessors, (29477), 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) [2023-03-31 02:03:49,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17968 states to 17968 states and 29480 transitions. [2023-03-31 02:03:49,095 INFO L78 Accepts]: Start accepts. Automaton has 17968 states and 29480 transitions. Word has length 218 [2023-03-31 02:03:49,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:03:49,096 INFO L495 AbstractCegarLoop]: Abstraction has 17968 states and 29480 transitions. [2023-03-31 02:03:49,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 4 states have internal predecessors, (215), 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) [2023-03-31 02:03:49,096 INFO L276 IsEmpty]: Start isEmpty. Operand 17968 states and 29480 transitions. [2023-03-31 02:03:49,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-03-31 02:03:49,104 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:03:49,104 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] [2023-03-31 02:03:49,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 02:03:49,104 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:03:49,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:03:49,105 INFO L85 PathProgramCache]: Analyzing trace with hash -16407119, now seen corresponding path program 1 times [2023-03-31 02:03:49,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:03:49,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361405545] [2023-03-31 02:03:49,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:03:49,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:03:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:49,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:03:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:49,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:03:49,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:03:49,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361405545] [2023-03-31 02:03:49,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361405545] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:03:49,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:03:49,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:03:49,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496411743] [2023-03-31 02:03:49,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:03:49,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:03:49,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:03:49,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:03:49,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:03:49,884 INFO L87 Difference]: Start difference. First operand 17968 states and 29480 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2023-03-31 02:03:55,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:03:55,800 INFO L93 Difference]: Finished difference Result 39663 states and 64920 transitions. [2023-03-31 02:03:55,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:03:55,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 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 219 [2023-03-31 02:03:55,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:03:55,852 INFO L225 Difference]: With dead ends: 39663 [2023-03-31 02:03:55,852 INFO L226 Difference]: Without dead ends: 27635 [2023-03-31 02:03:55,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:03:55,874 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 341 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 1608 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 2856 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-03-31 02:03:55,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 2856 Invalid, 1612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1608 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-03-31 02:03:55,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27635 states. [2023-03-31 02:03:57,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27635 to 27633. [2023-03-31 02:03:57,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27633 states, 27629 states have (on average 1.632958123710594) internal successors, (45117), 27629 states have internal predecessors, (45117), 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) [2023-03-31 02:03:57,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27633 states to 27633 states and 45120 transitions. [2023-03-31 02:03:57,811 INFO L78 Accepts]: Start accepts. Automaton has 27633 states and 45120 transitions. Word has length 219 [2023-03-31 02:03:57,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:03:57,812 INFO L495 AbstractCegarLoop]: Abstraction has 27633 states and 45120 transitions. [2023-03-31 02:03:57,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2023-03-31 02:03:57,812 INFO L276 IsEmpty]: Start isEmpty. Operand 27633 states and 45120 transitions. [2023-03-31 02:03:57,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-03-31 02:03:57,816 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:03:57,816 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] [2023-03-31 02:03:57,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 02:03:57,816 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:03:57,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:03:57,817 INFO L85 PathProgramCache]: Analyzing trace with hash -39649593, now seen corresponding path program 1 times [2023-03-31 02:03:57,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:03:57,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351928111] [2023-03-31 02:03:57,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:03:57,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:03:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:58,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:03:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:58,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:03:58,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:03:58,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351928111] [2023-03-31 02:03:58,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351928111] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:03:58,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:03:58,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:03:58,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062486314] [2023-03-31 02:03:58,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:03:58,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:03:58,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:03:58,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:03:58,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:03:58,573 INFO L87 Difference]: Start difference. First operand 27633 states and 45120 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2023-03-31 02:04:04,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:04:04,786 INFO L93 Difference]: Finished difference Result 53121 states and 86671 transitions. [2023-03-31 02:04:04,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:04:04,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 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 219 [2023-03-31 02:04:04,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:04:04,845 INFO L225 Difference]: With dead ends: 53121 [2023-03-31 02:04:04,846 INFO L226 Difference]: Without dead ends: 38871 [2023-03-31 02:04:04,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:04:04,870 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 333 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 1573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-03-31 02:04:04,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 2818 Invalid, 1573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1569 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-03-31 02:04:04,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38871 states. [2023-03-31 02:04:07,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38871 to 38869. [2023-03-31 02:04:07,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38869 states, 38865 states have (on average 1.6269908658175736) internal successors, (63233), 38865 states have internal predecessors, (63233), 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) [2023-03-31 02:04:07,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38869 states to 38869 states and 63236 transitions. [2023-03-31 02:04:07,854 INFO L78 Accepts]: Start accepts. Automaton has 38869 states and 63236 transitions. Word has length 219 [2023-03-31 02:04:07,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:04:07,854 INFO L495 AbstractCegarLoop]: Abstraction has 38869 states and 63236 transitions. [2023-03-31 02:04:07,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2023-03-31 02:04:07,854 INFO L276 IsEmpty]: Start isEmpty. Operand 38869 states and 63236 transitions. [2023-03-31 02:04:07,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-03-31 02:04:07,858 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:04:07,858 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] [2023-03-31 02:04:07,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 02:04:07,858 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:04:07,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:04:07,859 INFO L85 PathProgramCache]: Analyzing trace with hash 742424925, now seen corresponding path program 1 times [2023-03-31 02:04:07,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:04:07,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146308077] [2023-03-31 02:04:07,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:04:07,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:04:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:04:08,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:04:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:04:08,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:04:08,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:04:08,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146308077] [2023-03-31 02:04:08,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146308077] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:04:08,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:04:08,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:04:08,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908550793] [2023-03-31 02:04:08,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:04:08,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:04:08,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:04:08,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:04:08,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:04:08,694 INFO L87 Difference]: Start difference. First operand 38869 states and 63236 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 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)