/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_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:12:30,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:12:30,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:12:30,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 06:12:30,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:12:30,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:12:30,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:12:30,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:12:30,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:12:30,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:12:30,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:12:30,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:12:30,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:12:30,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:12:30,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:12:30,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:12:30,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 06:12:30,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:12:30,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:12:30,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:12:30,377 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 06:12:30,400 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:12:30,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:12:30,401 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:12:30,401 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:12:30,402 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:12:30,402 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:12:30,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:12:30,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:12:30,403 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:12:30,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:12:30,403 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:12:30,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:12:30,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:12:30,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:12:30,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:12:30,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:12:30,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:12:30,404 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:12:30,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:12:30,404 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:12:30,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:12:30,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:12:30,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:12:30,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:12:30,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:12:30,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:12:30,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:12:30,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:12:30,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:12:30,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:12:30,406 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:12:30,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:12:30,406 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:12:30,406 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:12:30,406 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:12:30,406 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:12:30,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:12:30,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:12:30,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:12:30,639 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:12:30,640 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:12:30,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-04-02 06:12:31,855 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:12:32,012 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:12:32,012 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-04-02 06:12:32,019 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/468a2ec0c/47b8f08d4b284ff1a72d21f615e81290/FLAG7ee1f23e1 [2023-04-02 06:12:32,030 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/468a2ec0c/47b8f08d4b284ff1a72d21f615e81290 [2023-04-02 06:12:32,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:12:32,033 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:12:32,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:12:32,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:12:32,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:12:32,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:12:32" (1/1) ... [2023-04-02 06:12:32,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66542ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:12:32, skipping insertion in model container [2023-04-02 06:12:32,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:12:32" (1/1) ... [2023-04-02 06:12:32,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:12:32,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:12:32,191 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_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5375,5388] [2023-04-02 06:12:32,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:12:32,219 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:12:32,242 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_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5375,5388] [2023-04-02 06:12:32,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:12:32,266 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:12:32,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:12:32 WrapperNode [2023-04-02 06:12:32,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:12:32,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:12:32,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:12:32,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:12:32,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:12:32" (1/1) ... [2023-04-02 06:12:32,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:12:32" (1/1) ... [2023-04-02 06:12:32,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:12:32" (1/1) ... [2023-04-02 06:12:32,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:12:32" (1/1) ... [2023-04-02 06:12:32,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:12:32" (1/1) ... [2023-04-02 06:12:32,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:12:32" (1/1) ... [2023-04-02 06:12:32,297 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:12:32" (1/1) ... [2023-04-02 06:12:32,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:12:32" (1/1) ... [2023-04-02 06:12:32,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:12:32,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:12:32,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:12:32,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:12:32,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:12:32" (1/1) ... [2023-04-02 06:12:32,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:12:32,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:12:32,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 06:12:32,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 06:12:32,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:12:32,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:12:32,376 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:12:32,376 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:12:32,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:12:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:12:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:12:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:12:32,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:12:32,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:12:32,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:12:32,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 06:12:32,377 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:12:32,377 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:12:32,377 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:12:32,377 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:12:32,377 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:12:32,377 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:12:32,377 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:12:32,377 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:12:32,378 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:12:32,378 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:12:32,378 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:12:32,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:12:32,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:12:32,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:12:32,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:12:32,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:12:32,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:12:32,466 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:12:32,467 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:12:32,863 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:12:32,869 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:12:32,870 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:12:32,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:12:32 BoogieIcfgContainer [2023-04-02 06:12:32,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:12:32,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:12:32,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:12:32,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:12:32,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:12:32" (1/3) ... [2023-04-02 06:12:32,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f75009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:12:32, skipping insertion in model container [2023-04-02 06:12:32,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:12:32" (2/3) ... [2023-04-02 06:12:32,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f75009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:12:32, skipping insertion in model container [2023-04-02 06:12:32,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:12:32" (3/3) ... [2023-04-02 06:12:32,877 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-04-02 06:12:32,890 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:12:32,890 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:12:32,935 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:12:32,940 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;@3d044ca1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:12:32,940 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:12:32,943 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 111 states have (on average 1.6756756756756757) internal successors, (186), 112 states have internal predecessors, (186), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 06:12:32,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-02 06:12:32,951 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:32,951 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] [2023-04-02 06:12:32,952 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:12:32,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:32,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1219446879, now seen corresponding path program 1 times [2023-04-02 06:12:32,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:32,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932790192] [2023-04-02 06:12:32,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:32,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:33,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:33,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:12:33,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:33,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932790192] [2023-04-02 06:12:33,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932790192] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:33,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:33,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:12:33,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739606275] [2023-04-02 06:12:33,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:33,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:12:33,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:33,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:12:33,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:12:33,521 INFO L87 Difference]: Start difference. First operand has 117 states, 111 states have (on average 1.6756756756756757) internal successors, (186), 112 states have internal predecessors, (186), 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 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:34,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:34,075 INFO L93 Difference]: Finished difference Result 273 states and 432 transitions. [2023-04-02 06:12:34,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:12:34,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 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 53 [2023-04-02 06:12:34,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:34,084 INFO L225 Difference]: With dead ends: 273 [2023-04-02 06:12:34,084 INFO L226 Difference]: Without dead ends: 179 [2023-04-02 06:12:34,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:12:34,090 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 134 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:34,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 394 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:12:34,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-04-02 06:12:34,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2023-04-02 06:12:34,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 173 states have (on average 1.5028901734104045) internal successors, (260), 173 states have internal predecessors, (260), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:34,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 263 transitions. [2023-04-02 06:12:34,133 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 263 transitions. Word has length 53 [2023-04-02 06:12:34,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:34,133 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 263 transitions. [2023-04-02 06:12:34,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:34,134 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 263 transitions. [2023-04-02 06:12:34,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-02 06:12:34,135 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:34,135 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] [2023-04-02 06:12:34,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:12:34,135 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:12:34,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:34,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1360956210, now seen corresponding path program 1 times [2023-04-02 06:12:34,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:34,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697898837] [2023-04-02 06:12:34,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:34,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:34,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:34,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:12:34,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:34,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697898837] [2023-04-02 06:12:34,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697898837] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:34,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:34,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:12:34,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404251617] [2023-04-02 06:12:34,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:34,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:12:34,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:34,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:12:34,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:12:34,352 INFO L87 Difference]: Start difference. First operand 177 states and 263 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:34,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:34,754 INFO L93 Difference]: Finished difference Result 437 states and 675 transitions. [2023-04-02 06:12:34,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:12:34,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 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 54 [2023-04-02 06:12:34,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:34,757 INFO L225 Difference]: With dead ends: 437 [2023-04-02 06:12:34,757 INFO L226 Difference]: Without dead ends: 291 [2023-04-02 06:12:34,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:12:34,759 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 111 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:34,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 333 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:12:34,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-04-02 06:12:34,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 289. [2023-04-02 06:12:34,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 285 states have (on average 1.5333333333333334) internal successors, (437), 285 states have internal predecessors, (437), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:34,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 440 transitions. [2023-04-02 06:12:34,785 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 440 transitions. Word has length 54 [2023-04-02 06:12:34,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:34,785 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 440 transitions. [2023-04-02 06:12:34,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:34,785 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 440 transitions. [2023-04-02 06:12:34,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-04-02 06:12:34,786 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:34,786 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] [2023-04-02 06:12:34,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:12:34,787 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:12:34,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:34,787 INFO L85 PathProgramCache]: Analyzing trace with hash -2073457344, now seen corresponding path program 1 times [2023-04-02 06:12:34,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:34,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952719428] [2023-04-02 06:12:34,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:34,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:34,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:34,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:12:34,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:34,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952719428] [2023-04-02 06:12:34,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952719428] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:34,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:34,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:12:34,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171399850] [2023-04-02 06:12:34,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:34,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:12:34,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:34,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:12:34,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:12:34,943 INFO L87 Difference]: Start difference. First operand 289 states and 440 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:35,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:35,293 INFO L93 Difference]: Finished difference Result 741 states and 1154 transitions. [2023-04-02 06:12:35,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:12:35,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 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 55 [2023-04-02 06:12:35,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:35,296 INFO L225 Difference]: With dead ends: 741 [2023-04-02 06:12:35,296 INFO L226 Difference]: Without dead ends: 483 [2023-04-02 06:12:35,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:12:35,298 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 106 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:35,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 318 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:12:35,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2023-04-02 06:12:35,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 481. [2023-04-02 06:12:35,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 477 states have (on average 1.5450733752620545) internal successors, (737), 477 states have internal predecessors, (737), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:35,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 740 transitions. [2023-04-02 06:12:35,343 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 740 transitions. Word has length 55 [2023-04-02 06:12:35,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:35,344 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 740 transitions. [2023-04-02 06:12:35,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:35,344 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 740 transitions. [2023-04-02 06:12:35,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-02 06:12:35,345 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:35,345 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] [2023-04-02 06:12:35,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:12:35,346 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:12:35,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:35,346 INFO L85 PathProgramCache]: Analyzing trace with hash 799182967, now seen corresponding path program 1 times [2023-04-02 06:12:35,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:35,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625226121] [2023-04-02 06:12:35,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:35,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:35,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:35,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:12:35,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:35,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625226121] [2023-04-02 06:12:35,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625226121] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:35,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:35,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:12:35,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812572984] [2023-04-02 06:12:35,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:35,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:12:35,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:35,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:12:35,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:12:35,582 INFO L87 Difference]: Start difference. First operand 481 states and 740 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:36,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:36,122 INFO L93 Difference]: Finished difference Result 2731 states and 4285 transitions. [2023-04-02 06:12:36,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:12:36,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 56 [2023-04-02 06:12:36,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:36,135 INFO L225 Difference]: With dead ends: 2731 [2023-04-02 06:12:36,135 INFO L226 Difference]: Without dead ends: 2281 [2023-04-02 06:12:36,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:12:36,145 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 929 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:36,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 1338 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:12:36,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2281 states. [2023-04-02 06:12:36,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2281 to 929. [2023-04-02 06:12:36,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 925 states have (on average 1.5448648648648649) internal successors, (1429), 925 states have internal predecessors, (1429), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:36,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1432 transitions. [2023-04-02 06:12:36,261 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1432 transitions. Word has length 56 [2023-04-02 06:12:36,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:36,262 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1432 transitions. [2023-04-02 06:12:36,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:36,262 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1432 transitions. [2023-04-02 06:12:36,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-02 06:12:36,263 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:36,263 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] [2023-04-02 06:12:36,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:12:36,263 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:12:36,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:36,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1013664547, now seen corresponding path program 1 times [2023-04-02 06:12:36,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:36,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49541904] [2023-04-02 06:12:36,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:36,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:36,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:12:36,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:36,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49541904] [2023-04-02 06:12:36,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49541904] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:36,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:36,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:12:36,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937664216] [2023-04-02 06:12:36,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:36,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:12:36,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:36,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:12:36,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:12:36,471 INFO L87 Difference]: Start difference. First operand 929 states and 1432 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:37,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:37,344 INFO L93 Difference]: Finished difference Result 4033 states and 6236 transitions. [2023-04-02 06:12:37,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:12:37,344 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 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 57 [2023-04-02 06:12:37,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:37,355 INFO L225 Difference]: With dead ends: 4033 [2023-04-02 06:12:37,356 INFO L226 Difference]: Without dead ends: 3135 [2023-04-02 06:12:37,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:12:37,360 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 464 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:37,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 828 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:12:37,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2023-04-02 06:12:37,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 3129. [2023-04-02 06:12:37,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3129 states, 3125 states have (on average 1.54016) internal successors, (4813), 3125 states have internal predecessors, (4813), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:37,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3129 states to 3129 states and 4816 transitions. [2023-04-02 06:12:37,685 INFO L78 Accepts]: Start accepts. Automaton has 3129 states and 4816 transitions. Word has length 57 [2023-04-02 06:12:37,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:37,686 INFO L495 AbstractCegarLoop]: Abstraction has 3129 states and 4816 transitions. [2023-04-02 06:12:37,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:37,686 INFO L276 IsEmpty]: Start isEmpty. Operand 3129 states and 4816 transitions. [2023-04-02 06:12:37,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-02 06:12:37,689 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:37,689 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] [2023-04-02 06:12:37,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:12:37,690 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:12:37,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:37,690 INFO L85 PathProgramCache]: Analyzing trace with hash 517789944, now seen corresponding path program 1 times [2023-04-02 06:12:37,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:37,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330718602] [2023-04-02 06:12:37,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:37,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:37,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:12:37,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:37,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330718602] [2023-04-02 06:12:37,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330718602] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:37,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:37,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:12:37,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779993882] [2023-04-02 06:12:37,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:37,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:12:37,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:37,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:12:37,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:12:37,871 INFO L87 Difference]: Start difference. First operand 3129 states and 4816 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:38,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:38,963 INFO L93 Difference]: Finished difference Result 8253 states and 12658 transitions. [2023-04-02 06:12:38,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:12:38,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 58 [2023-04-02 06:12:38,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:38,980 INFO L225 Difference]: With dead ends: 8253 [2023-04-02 06:12:38,980 INFO L226 Difference]: Without dead ends: 5155 [2023-04-02 06:12:38,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:12:38,985 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 118 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:38,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 373 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:12:38,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5155 states. [2023-04-02 06:12:39,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5155 to 5153. [2023-04-02 06:12:39,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5149 states have (on average 1.5158283161778987) internal successors, (7805), 5149 states have internal predecessors, (7805), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:39,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 7808 transitions. [2023-04-02 06:12:39,503 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 7808 transitions. Word has length 58 [2023-04-02 06:12:39,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:39,503 INFO L495 AbstractCegarLoop]: Abstraction has 5153 states and 7808 transitions. [2023-04-02 06:12:39,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:39,504 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 7808 transitions. [2023-04-02 06:12:39,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-02 06:12:39,504 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:39,504 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] [2023-04-02 06:12:39,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:12:39,505 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:12:39,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:39,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1438401172, now seen corresponding path program 1 times [2023-04-02 06:12:39,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:39,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863483414] [2023-04-02 06:12:39,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:39,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:39,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:39,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:12:39,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:39,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863483414] [2023-04-02 06:12:39,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863483414] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:39,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:39,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:12:39,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950508402] [2023-04-02 06:12:39,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:39,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:12:39,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:39,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:12:39,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:12:39,676 INFO L87 Difference]: Start difference. First operand 5153 states and 7808 transitions. Second operand has 6 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:41,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:41,000 INFO L93 Difference]: Finished difference Result 14261 states and 21650 transitions. [2023-04-02 06:12:41,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:12:41,001 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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) Word has length 59 [2023-04-02 06:12:41,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:41,032 INFO L225 Difference]: With dead ends: 14261 [2023-04-02 06:12:41,032 INFO L226 Difference]: Without dead ends: 9139 [2023-04-02 06:12:41,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:12:41,044 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 685 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:41,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 183 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:12:41,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9139 states. [2023-04-02 06:12:41,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9139 to 9137. [2023-04-02 06:12:41,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9137 states, 9133 states have (on average 1.5062958502135115) internal successors, (13757), 9133 states have internal predecessors, (13757), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:42,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9137 states to 9137 states and 13760 transitions. [2023-04-02 06:12:42,013 INFO L78 Accepts]: Start accepts. Automaton has 9137 states and 13760 transitions. Word has length 59 [2023-04-02 06:12:42,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:42,013 INFO L495 AbstractCegarLoop]: Abstraction has 9137 states and 13760 transitions. [2023-04-02 06:12:42,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:42,013 INFO L276 IsEmpty]: Start isEmpty. Operand 9137 states and 13760 transitions. [2023-04-02 06:12:42,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-02 06:12:42,014 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:42,014 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] [2023-04-02 06:12:42,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:12:42,014 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:12:42,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:42,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1086594417, now seen corresponding path program 1 times [2023-04-02 06:12:42,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:42,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829628355] [2023-04-02 06:12:42,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:42,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:42,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:42,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:12:42,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:42,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829628355] [2023-04-02 06:12:42,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829628355] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:42,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:42,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:12:42,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215254363] [2023-04-02 06:12:42,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:42,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:12:42,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:42,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:12:42,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:12:42,248 INFO L87 Difference]: Start difference. First operand 9137 states and 13760 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:44,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:44,415 INFO L93 Difference]: Finished difference Result 18691 states and 27937 transitions. [2023-04-02 06:12:44,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:12:44,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 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 59 [2023-04-02 06:12:44,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:44,461 INFO L225 Difference]: With dead ends: 18691 [2023-04-02 06:12:44,461 INFO L226 Difference]: Without dead ends: 18689 [2023-04-02 06:12:44,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:12:44,469 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 248 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:44,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 780 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:12:44,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18689 states. [2023-04-02 06:12:45,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18689 to 9585. [2023-04-02 06:12:45,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9585 states, 9581 states have (on average 1.482621855756184) internal successors, (14205), 9581 states have internal predecessors, (14205), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:45,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9585 states to 9585 states and 14208 transitions. [2023-04-02 06:12:45,772 INFO L78 Accepts]: Start accepts. Automaton has 9585 states and 14208 transitions. Word has length 59 [2023-04-02 06:12:45,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:45,772 INFO L495 AbstractCegarLoop]: Abstraction has 9585 states and 14208 transitions. [2023-04-02 06:12:45,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:45,773 INFO L276 IsEmpty]: Start isEmpty. Operand 9585 states and 14208 transitions. [2023-04-02 06:12:45,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-02 06:12:45,773 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:45,773 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] [2023-04-02 06:12:45,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:12:45,774 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:12:45,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:45,774 INFO L85 PathProgramCache]: Analyzing trace with hash 684931188, now seen corresponding path program 1 times [2023-04-02 06:12:45,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:45,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676868412] [2023-04-02 06:12:45,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:45,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:45,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:45,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:12:45,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:45,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676868412] [2023-04-02 06:12:45,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676868412] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:45,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:45,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:12:45,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195974883] [2023-04-02 06:12:45,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:45,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:12:45,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:45,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:12:45,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:12:45,921 INFO L87 Difference]: Start difference. First operand 9585 states and 14208 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:47,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:47,939 INFO L93 Difference]: Finished difference Result 21615 states and 31976 transitions. [2023-04-02 06:12:47,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:12:47,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 60 [2023-04-02 06:12:47,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:47,966 INFO L225 Difference]: With dead ends: 21615 [2023-04-02 06:12:47,966 INFO L226 Difference]: Without dead ends: 12061 [2023-04-02 06:12:47,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:12:47,987 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 93 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:47,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 283 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:12:47,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12061 states. [2023-04-02 06:12:49,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12061 to 12003. [2023-04-02 06:12:49,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12003 states, 11999 states have (on average 1.4690390865905492) internal successors, (17627), 11999 states have internal predecessors, (17627), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:49,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12003 states to 12003 states and 17630 transitions. [2023-04-02 06:12:49,587 INFO L78 Accepts]: Start accepts. Automaton has 12003 states and 17630 transitions. Word has length 60 [2023-04-02 06:12:49,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:49,587 INFO L495 AbstractCegarLoop]: Abstraction has 12003 states and 17630 transitions. [2023-04-02 06:12:49,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:49,588 INFO L276 IsEmpty]: Start isEmpty. Operand 12003 states and 17630 transitions. [2023-04-02 06:12:49,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-02 06:12:49,626 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:49,626 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:12:49,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:12:49,626 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:12:49,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:49,627 INFO L85 PathProgramCache]: Analyzing trace with hash -56548071, now seen corresponding path program 1 times [2023-04-02 06:12:49,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:49,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450366347] [2023-04-02 06:12:49,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:49,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:49,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:49,788 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:12:49,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:49,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450366347] [2023-04-02 06:12:49,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450366347] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:49,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:49,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:12:49,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030831397] [2023-04-02 06:12:49,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:49,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:12:49,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:49,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:12:49,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:12:49,790 INFO L87 Difference]: Start difference. First operand 12003 states and 17630 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:52,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:52,895 INFO L93 Difference]: Finished difference Result 31496 states and 46322 transitions. [2023-04-02 06:12:52,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:12:52,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 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 83 [2023-04-02 06:12:52,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:52,990 INFO L225 Difference]: With dead ends: 31496 [2023-04-02 06:12:52,990 INFO L226 Difference]: Without dead ends: 21006 [2023-04-02 06:12:53,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:12:53,026 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 93 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:53,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 386 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:12:53,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21006 states. [2023-04-02 06:12:56,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21006 to 21004. [2023-04-02 06:12:56,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21004 states, 21000 states have (on average 1.4566190476190477) internal successors, (30589), 21000 states have internal predecessors, (30589), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:56,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21004 states to 21004 states and 30592 transitions. [2023-04-02 06:12:56,103 INFO L78 Accepts]: Start accepts. Automaton has 21004 states and 30592 transitions. Word has length 83 [2023-04-02 06:12:56,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:56,103 INFO L495 AbstractCegarLoop]: Abstraction has 21004 states and 30592 transitions. [2023-04-02 06:12:56,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:56,104 INFO L276 IsEmpty]: Start isEmpty. Operand 21004 states and 30592 transitions. [2023-04-02 06:12:56,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-02 06:12:56,113 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:56,113 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:12:56,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:12:56,113 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:12:56,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:56,114 INFO L85 PathProgramCache]: Analyzing trace with hash 560712867, now seen corresponding path program 1 times [2023-04-02 06:12:56,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:56,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260099113] [2023-04-02 06:12:56,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:56,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:56,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:12:56,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:56,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260099113] [2023-04-02 06:12:56,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260099113] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 06:12:56,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818466356] [2023-04-02 06:12:56,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:56,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 06:12:56,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:12:56,561 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 06:12:56,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 06:12:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:56,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-02 06:12:56,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 06:12:56,984 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 06:12:56,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 06:12:57,099 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 06:12:57,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818466356] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 06:12:57,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 06:12:57,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4, 4] total 15 [2023-04-02 06:12:57,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588725973] [2023-04-02 06:12:57,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 06:12:57,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 06:12:57,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:57,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 06:12:57,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:12:57,102 INFO L87 Difference]: Start difference. First operand 21004 states and 30592 transitions. Second operand has 15 states, 15 states have (on average 15.133333333333333) internal successors, (227), 14 states have internal predecessors, (227), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 06:13:28,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:13:28,797 INFO L93 Difference]: Finished difference Result 189924 states and 272528 transitions. [2023-04-02 06:13:28,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-04-02 06:13:28,797 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 15.133333333333333) internal successors, (227), 14 states have internal predecessors, (227), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 83 [2023-04-02 06:13:28,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:13:29,264 INFO L225 Difference]: With dead ends: 189924 [2023-04-02 06:13:29,264 INFO L226 Difference]: Without dead ends: 170898 [2023-04-02 06:13:29,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7184 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3020, Invalid=13750, Unknown=0, NotChecked=0, Total=16770 [2023-04-02 06:13:29,342 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 9199 mSDsluCounter, 3044 mSDsCounter, 0 mSdLazyCounter, 4214 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9199 SdHoareTripleChecker+Valid, 3636 SdHoareTripleChecker+Invalid, 4282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 4214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:13:29,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9199 Valid, 3636 Invalid, 4282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 4214 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-02 06:13:29,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170898 states. [2023-04-02 06:13:45,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170898 to 95400. [2023-04-02 06:13:45,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95400 states, 95396 states have (on average 1.4263176653109144) internal successors, (136065), 95396 states have internal predecessors, (136065), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:13:46,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95400 states to 95400 states and 136068 transitions. [2023-04-02 06:13:46,083 INFO L78 Accepts]: Start accepts. Automaton has 95400 states and 136068 transitions. Word has length 83 [2023-04-02 06:13:46,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:13:46,083 INFO L495 AbstractCegarLoop]: Abstraction has 95400 states and 136068 transitions. [2023-04-02 06:13:46,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.133333333333333) internal successors, (227), 14 states have internal predecessors, (227), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 06:13:46,084 INFO L276 IsEmpty]: Start isEmpty. Operand 95400 states and 136068 transitions. [2023-04-02 06:13:46,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-02 06:13:46,093 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:13:46,093 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:13:46,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 06:13:46,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-02 06:13:46,300 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:13:46,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:13:46,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1555245675, now seen corresponding path program 1 times [2023-04-02 06:13:46,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:13:46,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640307116] [2023-04-02 06:13:46,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:13:46,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:13:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:13:46,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:13:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:13:46,706 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-02 06:13:46,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:13:46,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640307116] [2023-04-02 06:13:46,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640307116] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:13:46,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:13:46,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:13:46,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203853380] [2023-04-02 06:13:46,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:13:46,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:13:46,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:13:46,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:13:46,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:13:46,708 INFO L87 Difference]: Start difference. First operand 95400 states and 136068 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:14:11,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:14:11,543 INFO L93 Difference]: Finished difference Result 204652 states and 293673 transitions. [2023-04-02 06:14:11,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:14:11,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 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 83 [2023-04-02 06:14:11,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:14:12,103 INFO L225 Difference]: With dead ends: 204652 [2023-04-02 06:14:12,103 INFO L226 Difference]: Without dead ends: 161398 [2023-04-02 06:14:12,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:14:12,178 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 735 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:14:12,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 1032 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:14:12,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161398 states. [2023-04-02 06:14:33,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161398 to 130568. [2023-04-02 06:14:33,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130568 states, 130564 states have (on average 1.4223905517600564) internal successors, (185713), 130564 states have internal predecessors, (185713), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:14:34,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130568 states to 130568 states and 185716 transitions. [2023-04-02 06:14:34,119 INFO L78 Accepts]: Start accepts. Automaton has 130568 states and 185716 transitions. Word has length 83 [2023-04-02 06:14:34,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:14:34,119 INFO L495 AbstractCegarLoop]: Abstraction has 130568 states and 185716 transitions. [2023-04-02 06:14:34,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:14:34,120 INFO L276 IsEmpty]: Start isEmpty. Operand 130568 states and 185716 transitions. [2023-04-02 06:14:34,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-02 06:14:34,129 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:14:34,129 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:14:34,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:14:34,129 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:14:34,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:14:34,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1261270772, now seen corresponding path program 1 times [2023-04-02 06:14:34,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:14:34,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948850754] [2023-04-02 06:14:34,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:14:34,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:14:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:14:34,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:14:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:14:34,258 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:14:34,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:14:34,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948850754] [2023-04-02 06:14:34,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948850754] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:14:34,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:14:34,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:14:34,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716979231] [2023-04-02 06:14:34,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:14:34,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:14:34,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:14:34,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:14:34,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:14:34,260 INFO L87 Difference]: Start difference. First operand 130568 states and 185716 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:15:05,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:15:05,487 INFO L93 Difference]: Finished difference Result 276732 states and 393431 transitions. [2023-04-02 06:15:05,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:15:05,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 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 83 [2023-04-02 06:15:05,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:15:05,834 INFO L225 Difference]: With dead ends: 276732 [2023-04-02 06:15:05,834 INFO L226 Difference]: Without dead ends: 189442 [2023-04-02 06:15:05,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:15:05,950 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 96 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:15:05,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 340 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:15:06,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189442 states. [2023-04-02 06:15:34,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189442 to 176056. [2023-04-02 06:15:34,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176056 states, 176052 states have (on average 1.4075500420330358) internal successors, (247802), 176052 states have internal predecessors, (247802), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:15:35,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176056 states to 176056 states and 247805 transitions. [2023-04-02 06:15:35,189 INFO L78 Accepts]: Start accepts. Automaton has 176056 states and 247805 transitions. Word has length 83 [2023-04-02 06:15:35,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:15:35,190 INFO L495 AbstractCegarLoop]: Abstraction has 176056 states and 247805 transitions. [2023-04-02 06:15:35,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:15:35,190 INFO L276 IsEmpty]: Start isEmpty. Operand 176056 states and 247805 transitions. [2023-04-02 06:15:35,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-02 06:15:35,204 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:15:35,204 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:15:35,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:15:35,209 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:15:35,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:15:35,209 INFO L85 PathProgramCache]: Analyzing trace with hash 774434941, now seen corresponding path program 1 times [2023-04-02 06:15:35,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:15:35,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047139603] [2023-04-02 06:15:35,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:15:35,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:15:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:15:35,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:15:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:15:35,333 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:15:35,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:15:35,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047139603] [2023-04-02 06:15:35,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047139603] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:15:35,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:15:35,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:15:35,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794170702] [2023-04-02 06:15:35,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:15:35,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:15:35,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:15:35,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:15:35,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:15:35,334 INFO L87 Difference]: Start difference. First operand 176056 states and 247805 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:10,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:16:10,583 INFO L93 Difference]: Finished difference Result 290635 states and 406881 transitions. [2023-04-02 06:16:10,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:16:10,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 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 83 [2023-04-02 06:16:10,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:16:11,204 INFO L225 Difference]: With dead ends: 290635 [2023-04-02 06:16:11,204 INFO L226 Difference]: Without dead ends: 181371 [2023-04-02 06:16:11,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:16:11,323 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 97 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:16:11,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 359 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:16:11,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181371 states. [2023-04-02 06:16:40,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181371 to 172643. [2023-04-02 06:16:40,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172643 states, 172639 states have (on average 1.3826655622425987) internal successors, (238702), 172639 states have internal predecessors, (238702), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:40,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172643 states to 172643 states and 238705 transitions. [2023-04-02 06:16:40,798 INFO L78 Accepts]: Start accepts. Automaton has 172643 states and 238705 transitions. Word has length 83 [2023-04-02 06:16:40,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:16:40,798 INFO L495 AbstractCegarLoop]: Abstraction has 172643 states and 238705 transitions. [2023-04-02 06:16:40,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:40,799 INFO L276 IsEmpty]: Start isEmpty. Operand 172643 states and 238705 transitions. [2023-04-02 06:16:40,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-02 06:16:40,810 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:16:40,810 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:16:40,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:16:40,810 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:16:40,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:16:40,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1740505533, now seen corresponding path program 1 times [2023-04-02 06:16:40,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:16:40,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268016458] [2023-04-02 06:16:40,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:16:40,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:16:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:40,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:16:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 06:16:40,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:16:40,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268016458] [2023-04-02 06:16:40,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268016458] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:16:40,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:16:40,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:16:40,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159119301] [2023-04-02 06:16:40,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:16:40,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:16:40,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:16:40,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:16:40,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:16:40,955 INFO L87 Difference]: Start difference. First operand 172643 states and 238705 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 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)