/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:57:36,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:57:36,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:57:36,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 06:57:36,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:57:36,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:57:36,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:57:36,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:57:36,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:57:36,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:57:36,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:57:36,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:57:36,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:57:36,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:57:36,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:57:36,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:57:36,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 06:57:36,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:57:36,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:57:36,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:57:36,716 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 06:57:36,730 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:57:36,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:57:36,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:57:36,730 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:57:36,731 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:57:36,731 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:57:36,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:57:36,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:57:36,731 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:57:36,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:57:36,732 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:57:36,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:57:36,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:57:36,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:57:36,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:57:36,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:57:36,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:57:36,732 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:57:36,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:57:36,732 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:57:36,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:57:36,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:57:36,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:57:36,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:57:36,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:57:36,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:57:36,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:57:36,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:57:36,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:57:36,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:57:36,733 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:57:36,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:57:36,733 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:57:36,734 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:57:36,734 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:57:36,734 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:57:36,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:57:36,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:57:36,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:57:36,958 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:57:36,958 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:57:36,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-04-02 06:57:38,092 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:57:38,327 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:57:38,327 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-04-02 06:57:38,342 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/929bfb1e3/9421053a94f2424aaba779e565f0a082/FLAGe54224915 [2023-04-02 06:57:38,355 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/929bfb1e3/9421053a94f2424aaba779e565f0a082 [2023-04-02 06:57:38,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:57:38,358 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:57:38,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:57:38,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:57:38,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:57:38,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:57:38" (1/1) ... [2023-04-02 06:57:38,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1648770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:57:38, skipping insertion in model container [2023-04-02 06:57:38,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:57:38" (1/1) ... [2023-04-02 06:57:38,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:57:38,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:57:38,658 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13826,13839] [2023-04-02 06:57:38,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:57:38,781 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:57:38,865 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13826,13839] [2023-04-02 06:57:38,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:57:38,910 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:57:38,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:57:38 WrapperNode [2023-04-02 06:57:38,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:57:38,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:57:38,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:57:38,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:57:38,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:57:38" (1/1) ... [2023-04-02 06:57:38,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:57:38" (1/1) ... [2023-04-02 06:57:38,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:57:38" (1/1) ... [2023-04-02 06:57:38,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:57:38" (1/1) ... [2023-04-02 06:57:38,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:57:38" (1/1) ... [2023-04-02 06:57:38,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:57:38" (1/1) ... [2023-04-02 06:57:38,976 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:57:38" (1/1) ... [2023-04-02 06:57:38,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:57:38" (1/1) ... [2023-04-02 06:57:38,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:57:38,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:57:38,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:57:38,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:57:38,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:57:38" (1/1) ... [2023-04-02 06:57:39,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:57:39,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:57:39,051 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 06:57:39,084 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 06:57:39,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:57:39,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:57:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:57:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:57:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:57:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:57:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:57:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:57:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:57:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:57:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 06:57:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:57:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:57:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:57:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:57:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:57:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:57:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:57:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:57:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:57:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:57:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:57:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:57:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:57:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:57:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:57:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:57:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:57:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:57:39,292 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:57:39,293 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:57:40,052 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:57:40,066 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:57:40,066 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:57:40,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:57:40 BoogieIcfgContainer [2023-04-02 06:57:40,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:57:40,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:57:40,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:57:40,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:57:40,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:57:38" (1/3) ... [2023-04-02 06:57:40,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d52d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:57:40, skipping insertion in model container [2023-04-02 06:57:40,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:57:38" (2/3) ... [2023-04-02 06:57:40,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d52d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:57:40, skipping insertion in model container [2023-04-02 06:57:40,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:57:40" (3/3) ... [2023-04-02 06:57:40,076 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-04-02 06:57:40,088 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:57:40,088 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:57:40,143 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:57:40,148 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;@49fc67a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:57:40,149 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:57:40,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 349 states have (on average 1.7851002865329513) internal successors, (623), 357 states have internal predecessors, (623), 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 06:57:40,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-04-02 06:57:40,170 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:57:40,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:57:40,171 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:57:40,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:57:40,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1461518113, now seen corresponding path program 1 times [2023-04-02 06:57:40,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:57:40,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963986401] [2023-04-02 06:57:40,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:57:40,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:57:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:40,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:57:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:41,013 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 06:57:41,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:57:41,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963986401] [2023-04-02 06:57:41,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963986401] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:57:41,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:57:41,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:57:41,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482215593] [2023-04-02 06:57:41,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:57:41,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:57:41,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:57:41,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:57:41,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:57:41,059 INFO L87 Difference]: Start difference. First operand has 362 states, 349 states have (on average 1.7851002865329513) internal successors, (623), 357 states have internal predecessors, (623), 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 29.75) internal successors, (119), 3 states have internal predecessors, (119), 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 06:57:42,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:57:42,735 INFO L93 Difference]: Finished difference Result 678 states and 1131 transitions. [2023-04-02 06:57:42,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:57:42,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 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 122 [2023-04-02 06:57:42,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:57:42,750 INFO L225 Difference]: With dead ends: 678 [2023-04-02 06:57:42,750 INFO L226 Difference]: Without dead ends: 492 [2023-04-02 06:57:42,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:57:42,756 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 270 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:57:42,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 1156 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 06:57:42,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-04-02 06:57:42,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 489. [2023-04-02 06:57:42,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 485 states have (on average 1.6247422680412371) internal successors, (788), 485 states have internal predecessors, (788), 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 06:57:42,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 791 transitions. [2023-04-02 06:57:42,912 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 791 transitions. Word has length 122 [2023-04-02 06:57:42,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:57:42,912 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 791 transitions. [2023-04-02 06:57:42,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 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 06:57:42,913 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 791 transitions. [2023-04-02 06:57:42,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-04-02 06:57:42,915 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:57:42,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:57:42,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:57:42,916 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:57:42,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:57:42,916 INFO L85 PathProgramCache]: Analyzing trace with hash -982632352, now seen corresponding path program 1 times [2023-04-02 06:57:42,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:57:42,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833385573] [2023-04-02 06:57:42,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:57:42,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:57:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:43,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:57:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:43,383 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 06:57:43,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:57:43,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833385573] [2023-04-02 06:57:43,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833385573] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:57:43,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:57:43,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:57:43,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107447021] [2023-04-02 06:57:43,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:57:43,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:57:43,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:57:43,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:57:43,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:57:43,386 INFO L87 Difference]: Start difference. First operand 489 states and 791 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 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 06:57:44,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:57:44,672 INFO L93 Difference]: Finished difference Result 1053 states and 1703 transitions. [2023-04-02 06:57:44,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:57:44,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 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 125 [2023-04-02 06:57:44,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:57:44,677 INFO L225 Difference]: With dead ends: 1053 [2023-04-02 06:57:44,677 INFO L226 Difference]: Without dead ends: 761 [2023-04-02 06:57:44,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:57:44,681 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 223 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:57:44,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 1082 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:57:44,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2023-04-02 06:57:44,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 757. [2023-04-02 06:57:44,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 753 states have (on average 1.6188579017264275) internal successors, (1219), 753 states have internal predecessors, (1219), 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 06:57:44,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1222 transitions. [2023-04-02 06:57:44,730 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1222 transitions. Word has length 125 [2023-04-02 06:57:44,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:57:44,732 INFO L495 AbstractCegarLoop]: Abstraction has 757 states and 1222 transitions. [2023-04-02 06:57:44,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 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 06:57:44,732 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1222 transitions. [2023-04-02 06:57:44,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-02 06:57:44,752 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:57:44,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:57:44,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:57:44,753 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:57:44,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:57:44,753 INFO L85 PathProgramCache]: Analyzing trace with hash 810792296, now seen corresponding path program 1 times [2023-04-02 06:57:44,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:57:44,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654379310] [2023-04-02 06:57:44,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:57:44,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:57:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:45,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:57:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:45,182 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 06:57:45,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:57:45,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654379310] [2023-04-02 06:57:45,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654379310] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:57:45,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:57:45,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:57:45,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239285342] [2023-04-02 06:57:45,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:57:45,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:57:45,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:57:45,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:57:45,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:57:45,184 INFO L87 Difference]: Start difference. First operand 757 states and 1222 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 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 06:57:46,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:57:46,473 INFO L93 Difference]: Finished difference Result 1837 states and 2960 transitions. [2023-04-02 06:57:46,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:57:46,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 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 128 [2023-04-02 06:57:46,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:57:46,479 INFO L225 Difference]: With dead ends: 1837 [2023-04-02 06:57:46,479 INFO L226 Difference]: Without dead ends: 1277 [2023-04-02 06:57:46,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:57:46,487 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 216 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:57:46,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1083 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:57:46,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2023-04-02 06:57:46,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1271. [2023-04-02 06:57:46,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 1267 states have (on average 1.6093133385951066) internal successors, (2039), 1267 states have internal predecessors, (2039), 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 06:57:46,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 2042 transitions. [2023-04-02 06:57:46,573 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 2042 transitions. Word has length 128 [2023-04-02 06:57:46,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:57:46,574 INFO L495 AbstractCegarLoop]: Abstraction has 1271 states and 2042 transitions. [2023-04-02 06:57:46,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 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 06:57:46,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 2042 transitions. [2023-04-02 06:57:46,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-04-02 06:57:46,576 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:57:46,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:57:46,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:57:46,576 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:57:46,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:57:46,577 INFO L85 PathProgramCache]: Analyzing trace with hash -2064693553, now seen corresponding path program 1 times [2023-04-02 06:57:46,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:57:46,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671720536] [2023-04-02 06:57:46,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:57:46,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:57:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:47,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:57:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:47,012 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 06:57:47,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:57:47,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671720536] [2023-04-02 06:57:47,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671720536] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:57:47,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:57:47,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:57:47,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915442383] [2023-04-02 06:57:47,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:57:47,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:57:47,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:57:47,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:57:47,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:57:47,016 INFO L87 Difference]: Start difference. First operand 1271 states and 2042 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 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 06:57:48,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:57:48,408 INFO L93 Difference]: Finished difference Result 3339 states and 5348 transitions. [2023-04-02 06:57:48,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:57:48,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 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 131 [2023-04-02 06:57:48,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:57:48,417 INFO L225 Difference]: With dead ends: 3339 [2023-04-02 06:57:48,418 INFO L226 Difference]: Without dead ends: 2265 [2023-04-02 06:57:48,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:57:48,428 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 209 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:57:48,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1084 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:57:48,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2023-04-02 06:57:48,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 2255. [2023-04-02 06:57:48,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 2251 states have (on average 1.5970679697912038) internal successors, (3595), 2251 states have internal predecessors, (3595), 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 06:57:48,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3598 transitions. [2023-04-02 06:57:48,556 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3598 transitions. Word has length 131 [2023-04-02 06:57:48,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:57:48,557 INFO L495 AbstractCegarLoop]: Abstraction has 2255 states and 3598 transitions. [2023-04-02 06:57:48,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 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 06:57:48,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3598 transitions. [2023-04-02 06:57:48,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 06:57:48,559 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:57:48,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:57:48,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:57:48,560 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:57:48,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:57:48,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1196198723, now seen corresponding path program 1 times [2023-04-02 06:57:48,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:57:48,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916839986] [2023-04-02 06:57:48,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:57:48,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:57:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:49,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:57:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:49,013 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 06:57:49,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:57:49,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916839986] [2023-04-02 06:57:49,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916839986] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:57:49,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:57:49,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:57:49,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504541551] [2023-04-02 06:57:49,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:57:49,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:57:49,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:57:49,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:57:49,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:57:49,015 INFO L87 Difference]: Start difference. First operand 2255 states and 3598 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 6 states have internal predecessors, (131), 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 06:57:50,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:57:50,882 INFO L93 Difference]: Finished difference Result 11791 states and 18938 transitions. [2023-04-02 06:57:50,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:57:50,882 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 6 states have internal predecessors, (131), 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 134 [2023-04-02 06:57:50,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:57:50,912 INFO L225 Difference]: With dead ends: 11791 [2023-04-02 06:57:50,912 INFO L226 Difference]: Without dead ends: 9709 [2023-04-02 06:57:50,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:57:50,919 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 2328 mSDsluCounter, 3680 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2328 SdHoareTripleChecker+Valid, 4243 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:57:50,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2328 Valid, 4243 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:57:50,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9709 states. [2023-04-02 06:57:51,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9709 to 4126. [2023-04-02 06:57:51,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4126 states, 4122 states have (on average 1.6038330907326541) internal successors, (6611), 4122 states have internal predecessors, (6611), 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 06:57:51,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 6614 transitions. [2023-04-02 06:57:51,226 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 6614 transitions. Word has length 134 [2023-04-02 06:57:51,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:57:51,226 INFO L495 AbstractCegarLoop]: Abstraction has 4126 states and 6614 transitions. [2023-04-02 06:57:51,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 6 states have internal predecessors, (131), 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 06:57:51,227 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 6614 transitions. [2023-04-02 06:57:51,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-02 06:57:51,229 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:57:51,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:57:51,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:57:51,229 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:57:51,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:57:51,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1506376995, now seen corresponding path program 1 times [2023-04-02 06:57:51,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:57:51,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443802954] [2023-04-02 06:57:51,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:57:51,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:57:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:51,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:57:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:51,638 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 06:57:51,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:57:51,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443802954] [2023-04-02 06:57:51,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443802954] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:57:51,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:57:51,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:57:51,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340176811] [2023-04-02 06:57:51,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:57:51,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 06:57:51,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:57:51,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 06:57:51,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:57:51,641 INFO L87 Difference]: Start difference. First operand 4126 states and 6614 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 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 06:57:53,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:57:53,351 INFO L93 Difference]: Finished difference Result 12097 states and 19439 transitions. [2023-04-02 06:57:53,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 06:57:53,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 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 135 [2023-04-02 06:57:53,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:57:53,381 INFO L225 Difference]: With dead ends: 12097 [2023-04-02 06:57:53,381 INFO L226 Difference]: Without dead ends: 8168 [2023-04-02 06:57:53,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:57:53,391 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 727 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:57:53,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1707 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:57:53,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8168 states. [2023-04-02 06:57:53,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8168 to 6123. [2023-04-02 06:57:53,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6123 states, 6119 states have (on average 1.6027128615786894) internal successors, (9807), 6119 states have internal predecessors, (9807), 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 06:57:53,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6123 states to 6123 states and 9810 transitions. [2023-04-02 06:57:53,750 INFO L78 Accepts]: Start accepts. Automaton has 6123 states and 9810 transitions. Word has length 135 [2023-04-02 06:57:53,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:57:53,750 INFO L495 AbstractCegarLoop]: Abstraction has 6123 states and 9810 transitions. [2023-04-02 06:57:53,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 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 06:57:53,750 INFO L276 IsEmpty]: Start isEmpty. Operand 6123 states and 9810 transitions. [2023-04-02 06:57:53,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-02 06:57:53,753 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:57:53,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:57:53,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:57:53,754 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:57:53,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:57:53,754 INFO L85 PathProgramCache]: Analyzing trace with hash 249295432, now seen corresponding path program 1 times [2023-04-02 06:57:53,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:57:53,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183867778] [2023-04-02 06:57:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:57:53,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:57:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:54,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:57:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:54,134 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 06:57:54,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:57:54,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183867778] [2023-04-02 06:57:54,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183867778] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:57:54,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:57:54,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:57:54,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772754381] [2023-04-02 06:57:54,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:57:54,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:57:54,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:57:54,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:57:54,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:57:54,136 INFO L87 Difference]: Start difference. First operand 6123 states and 9810 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 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 06:57:56,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:57:56,001 INFO L93 Difference]: Finished difference Result 11963 states and 19163 transitions. [2023-04-02 06:57:56,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:57:56,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 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 138 [2023-04-02 06:57:56,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:57:56,034 INFO L225 Difference]: With dead ends: 11963 [2023-04-02 06:57:56,034 INFO L226 Difference]: Without dead ends: 8751 [2023-04-02 06:57:56,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:57:56,058 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 215 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:57:56,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1167 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:57:56,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8751 states. [2023-04-02 06:57:56,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8751 to 8749. [2023-04-02 06:57:56,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8749 states, 8745 states have (on average 1.5951972555746141) internal successors, (13950), 8745 states have internal predecessors, (13950), 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 06:57:56,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8749 states to 8749 states and 13953 transitions. [2023-04-02 06:57:56,724 INFO L78 Accepts]: Start accepts. Automaton has 8749 states and 13953 transitions. Word has length 138 [2023-04-02 06:57:56,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:57:56,725 INFO L495 AbstractCegarLoop]: Abstraction has 8749 states and 13953 transitions. [2023-04-02 06:57:56,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 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 06:57:56,726 INFO L276 IsEmpty]: Start isEmpty. Operand 8749 states and 13953 transitions. [2023-04-02 06:57:56,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-02 06:57:56,729 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:57:56,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:57:56,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:57:56,730 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:57:56,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:57:56,730 INFO L85 PathProgramCache]: Analyzing trace with hash 398072684, now seen corresponding path program 1 times [2023-04-02 06:57:56,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:57:56,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034511799] [2023-04-02 06:57:56,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:57:56,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:57:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:57,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:57:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:57,175 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 06:57:57,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:57:57,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034511799] [2023-04-02 06:57:57,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034511799] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:57:57,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:57:57,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:57:57,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467327807] [2023-04-02 06:57:57,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:57:57,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:57:57,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:57:57,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:57:57,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:57:57,177 INFO L87 Difference]: Start difference. First operand 8749 states and 13953 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 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 06:57:59,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:57:59,180 INFO L93 Difference]: Finished difference Result 16795 states and 26795 transitions. [2023-04-02 06:57:59,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:57:59,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 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 138 [2023-04-02 06:57:59,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:57:59,205 INFO L225 Difference]: With dead ends: 16795 [2023-04-02 06:57:59,205 INFO L226 Difference]: Without dead ends: 12301 [2023-04-02 06:57:59,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:57:59,215 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 208 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:57:59,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 1134 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:57:59,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12301 states. [2023-04-02 06:57:59,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12301 to 12299. [2023-04-02 06:57:59,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12299 states, 12295 states have (on average 1.5877999186661245) internal successors, (19522), 12295 states have internal predecessors, (19522), 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 06:57:59,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12299 states to 12299 states and 19525 transitions. [2023-04-02 06:57:59,985 INFO L78 Accepts]: Start accepts. Automaton has 12299 states and 19525 transitions. Word has length 138 [2023-04-02 06:57:59,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:57:59,985 INFO L495 AbstractCegarLoop]: Abstraction has 12299 states and 19525 transitions. [2023-04-02 06:57:59,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 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 06:57:59,986 INFO L276 IsEmpty]: Start isEmpty. Operand 12299 states and 19525 transitions. [2023-04-02 06:57:59,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-02 06:57:59,988 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:57:59,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:57:59,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:57:59,989 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:57:59,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:57:59,989 INFO L85 PathProgramCache]: Analyzing trace with hash 2019893880, now seen corresponding path program 1 times [2023-04-02 06:57:59,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:57:59,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770251992] [2023-04-02 06:57:59,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:57:59,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:58:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:00,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:58:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:00,319 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 06:58:00,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:58:00,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770251992] [2023-04-02 06:58:00,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770251992] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:58:00,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:58:00,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:58:00,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566131948] [2023-04-02 06:58:00,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:58:00,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:58:00,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:58:00,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:58:00,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:58:00,321 INFO L87 Difference]: Start difference. First operand 12299 states and 19525 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 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 06:58:02,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:58:02,875 INFO L93 Difference]: Finished difference Result 23067 states and 36645 transitions. [2023-04-02 06:58:02,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:58:02,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 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 138 [2023-04-02 06:58:02,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:58:02,911 INFO L225 Difference]: With dead ends: 23067 [2023-04-02 06:58:02,912 INFO L226 Difference]: Without dead ends: 16625 [2023-04-02 06:58:02,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:58:02,926 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 222 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:58:02,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1221 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:58:02,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16625 states. [2023-04-02 06:58:03,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16625 to 16623. [2023-04-02 06:58:03,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16623 states, 16619 states have (on average 1.580540345387809) internal successors, (26267), 16619 states have internal predecessors, (26267), 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 06:58:04,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16623 states to 16623 states and 26270 transitions. [2023-04-02 06:58:04,030 INFO L78 Accepts]: Start accepts. Automaton has 16623 states and 26270 transitions. Word has length 138 [2023-04-02 06:58:04,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:58:04,030 INFO L495 AbstractCegarLoop]: Abstraction has 16623 states and 26270 transitions. [2023-04-02 06:58:04,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 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 06:58:04,031 INFO L276 IsEmpty]: Start isEmpty. Operand 16623 states and 26270 transitions. [2023-04-02 06:58:04,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-02 06:58:04,032 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:58:04,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:58:04,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:58:04,033 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:58:04,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:58:04,033 INFO L85 PathProgramCache]: Analyzing trace with hash -773031261, now seen corresponding path program 1 times [2023-04-02 06:58:04,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:58:04,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581880563] [2023-04-02 06:58:04,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:58:04,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:58:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:04,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:58:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:04,386 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 06:58:04,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:58:04,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581880563] [2023-04-02 06:58:04,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581880563] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:58:04,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:58:04,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:58:04,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622496427] [2023-04-02 06:58:04,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:58:04,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:58:04,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:58:04,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:58:04,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:58:04,387 INFO L87 Difference]: Start difference. First operand 16623 states and 26270 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 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 06:58:07,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:58:07,702 INFO L93 Difference]: Finished difference Result 36028 states and 56848 transitions. [2023-04-02 06:58:07,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:58:07,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 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 138 [2023-04-02 06:58:07,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:58:07,754 INFO L225 Difference]: With dead ends: 36028 [2023-04-02 06:58:07,754 INFO L226 Difference]: Without dead ends: 24488 [2023-04-02 06:58:07,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:58:07,774 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 229 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:58:07,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 1270 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:58:07,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24488 states. [2023-04-02 06:58:09,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24488 to 24486. [2023-04-02 06:58:09,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24486 states, 24482 states have (on average 1.5676415325545299) internal successors, (38379), 24482 states have internal predecessors, (38379), 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 06:58:09,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24486 states to 24486 states and 38382 transitions. [2023-04-02 06:58:09,479 INFO L78 Accepts]: Start accepts. Automaton has 24486 states and 38382 transitions. Word has length 138 [2023-04-02 06:58:09,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:58:09,480 INFO L495 AbstractCegarLoop]: Abstraction has 24486 states and 38382 transitions. [2023-04-02 06:58:09,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 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 06:58:09,480 INFO L276 IsEmpty]: Start isEmpty. Operand 24486 states and 38382 transitions. [2023-04-02 06:58:09,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-02 06:58:09,481 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:58:09,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:58:09,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:58:09,485 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:58:09,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:58:09,486 INFO L85 PathProgramCache]: Analyzing trace with hash -2143857320, now seen corresponding path program 1 times [2023-04-02 06:58:09,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:58:09,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035429317] [2023-04-02 06:58:09,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:58:09,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:58:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:10,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:58:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:10,190 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 06:58:10,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:58:10,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035429317] [2023-04-02 06:58:10,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035429317] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:58:10,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:58:10,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:58:10,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406070874] [2023-04-02 06:58:10,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:58:10,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:58:10,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:58:10,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:58:10,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:58:10,192 INFO L87 Difference]: Start difference. First operand 24486 states and 38382 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 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 06:58:14,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:58:14,290 INFO L93 Difference]: Finished difference Result 40501 states and 63135 transitions. [2023-04-02 06:58:14,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:58:14,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 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 144 [2023-04-02 06:58:14,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:58:14,368 INFO L225 Difference]: With dead ends: 40501 [2023-04-02 06:58:14,368 INFO L226 Difference]: Without dead ends: 40499 [2023-04-02 06:58:14,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:58:14,380 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 477 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 2569 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:58:14,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 2569 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:58:14,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40499 states. [2023-04-02 06:58:16,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40499 to 24806. [2023-04-02 06:58:16,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24806 states, 24802 states have (on average 1.557051850657205) internal successors, (38618), 24802 states have internal predecessors, (38618), 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 06:58:16,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24806 states to 24806 states and 38621 transitions. [2023-04-02 06:58:16,457 INFO L78 Accepts]: Start accepts. Automaton has 24806 states and 38621 transitions. Word has length 144 [2023-04-02 06:58:16,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:58:16,457 INFO L495 AbstractCegarLoop]: Abstraction has 24806 states and 38621 transitions. [2023-04-02 06:58:16,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 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 06:58:16,457 INFO L276 IsEmpty]: Start isEmpty. Operand 24806 states and 38621 transitions. [2023-04-02 06:58:16,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-04-02 06:58:16,461 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:58:16,461 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:58:16,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:58:16,461 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:58:16,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:58:16,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1332325505, now seen corresponding path program 1 times [2023-04-02 06:58:16,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:58:16,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58793962] [2023-04-02 06:58:16,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:58:16,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:58:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:17,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:58:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:17,031 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 06:58:17,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:58:17,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58793962] [2023-04-02 06:58:17,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58793962] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:58:17,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:58:17,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:58:17,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995016430] [2023-04-02 06:58:17,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:58:17,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:58:17,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:58:17,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:58:17,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:58:17,033 INFO L87 Difference]: Start difference. First operand 24806 states and 38621 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 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 06:58:24,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:58:24,390 INFO L93 Difference]: Finished difference Result 86476 states and 134722 transitions. [2023-04-02 06:58:24,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:58:24,391 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 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 180 [2023-04-02 06:58:24,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:58:24,521 INFO L225 Difference]: With dead ends: 86476 [2023-04-02 06:58:24,521 INFO L226 Difference]: Without dead ends: 70214 [2023-04-02 06:58:24,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:58:24,563 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 1573 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 2913 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:58:24,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1573 Valid, 2913 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 06:58:24,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70214 states. [2023-04-02 06:58:28,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70214 to 42330. [2023-04-02 06:58:28,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42330 states, 42326 states have (on average 1.553843972971696) internal successors, (65768), 42326 states have internal predecessors, (65768), 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 06:58:28,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42330 states to 42330 states and 65771 transitions. [2023-04-02 06:58:28,837 INFO L78 Accepts]: Start accepts. Automaton has 42330 states and 65771 transitions. Word has length 180 [2023-04-02 06:58:28,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:58:28,838 INFO L495 AbstractCegarLoop]: Abstraction has 42330 states and 65771 transitions. [2023-04-02 06:58:28,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 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 06:58:28,838 INFO L276 IsEmpty]: Start isEmpty. Operand 42330 states and 65771 transitions. [2023-04-02 06:58:28,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-04-02 06:58:28,841 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:58:28,841 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:58:28,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:58:28,841 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:58:28,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:58:28,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1481102757, now seen corresponding path program 1 times [2023-04-02 06:58:28,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:58:28,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919472831] [2023-04-02 06:58:28,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:58:28,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:58:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:29,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:58:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:29,273 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-02 06:58:29,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:58:29,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919472831] [2023-04-02 06:58:29,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919472831] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:58:29,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:58:29,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:58:29,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253635599] [2023-04-02 06:58:29,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:58:29,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:58:29,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:58:29,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:58:29,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:58:29,275 INFO L87 Difference]: Start difference. First operand 42330 states and 65771 transitions. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 6 states have internal predecessors, (155), 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 06:58:38,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:58:38,102 INFO L93 Difference]: Finished difference Result 95349 states and 148494 transitions. [2023-04-02 06:58:38,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:58:38,102 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 6 states have internal predecessors, (155), 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 180 [2023-04-02 06:58:38,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:58:38,255 INFO L225 Difference]: With dead ends: 95349 [2023-04-02 06:58:38,255 INFO L226 Difference]: Without dead ends: 79087 [2023-04-02 06:58:38,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:58:38,298 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 1537 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 3266 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:58:38,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 3266 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-02 06:58:38,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79087 states. [2023-04-02 06:58:44,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79087 to 64028. [2023-04-02 06:58:44,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64028 states, 64024 states have (on average 1.5526677495939023) internal successors, (99408), 64024 states have internal predecessors, (99408), 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 06:58:44,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64028 states to 64028 states and 99411 transitions. [2023-04-02 06:58:44,848 INFO L78 Accepts]: Start accepts. Automaton has 64028 states and 99411 transitions. Word has length 180 [2023-04-02 06:58:44,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:58:44,849 INFO L495 AbstractCegarLoop]: Abstraction has 64028 states and 99411 transitions. [2023-04-02 06:58:44,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 6 states have internal predecessors, (155), 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 06:58:44,849 INFO L276 IsEmpty]: Start isEmpty. Operand 64028 states and 99411 transitions. [2023-04-02 06:58:44,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-04-02 06:58:44,852 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:58:44,852 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:58:44,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:58:44,853 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:58:44,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:58:44,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1192043343, now seen corresponding path program 1 times [2023-04-02 06:58:44,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:58:44,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404486536] [2023-04-02 06:58:44,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:58:44,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:58:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:45,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:58:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:45,384 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 06:58:45,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:58:45,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404486536] [2023-04-02 06:58:45,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404486536] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:58:45,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:58:45,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:58:45,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835062480] [2023-04-02 06:58:45,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:58:45,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:58:45,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:58:45,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:58:45,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:58:45,386 INFO L87 Difference]: Start difference. First operand 64028 states and 99411 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 6 states have internal predecessors, (169), 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 06:58:56,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:58:56,106 INFO L93 Difference]: Finished difference Result 108433 states and 168849 transitions. [2023-04-02 06:58:56,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:58:56,107 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 6 states have internal predecessors, (169), 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 180 [2023-04-02 06:58:56,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:58:56,307 INFO L225 Difference]: With dead ends: 108433 [2023-04-02 06:58:56,308 INFO L226 Difference]: Without dead ends: 92171 [2023-04-02 06:58:56,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:58:56,353 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 1454 mSDsluCounter, 2404 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 3227 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:58:56,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 3227 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 06:58:56,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92171 states. [2023-04-02 06:59:04,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92171 to 77542. [2023-04-02 06:59:04,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77542 states, 77538 states have (on average 1.552903092677139) internal successors, (120409), 77538 states have internal predecessors, (120409), 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 06:59:04,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77542 states to 77542 states and 120412 transitions. [2023-04-02 06:59:04,580 INFO L78 Accepts]: Start accepts. Automaton has 77542 states and 120412 transitions. Word has length 180 [2023-04-02 06:59:04,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:59:04,580 INFO L495 AbstractCegarLoop]: Abstraction has 77542 states and 120412 transitions. [2023-04-02 06:59:04,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 6 states have internal predecessors, (169), 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 06:59:04,581 INFO L276 IsEmpty]: Start isEmpty. Operand 77542 states and 120412 transitions. [2023-04-02 06:59:04,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-04-02 06:59:04,585 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:59:04,585 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:59:04,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:59:04,585 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:59:04,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:59:04,585 INFO L85 PathProgramCache]: Analyzing trace with hash 309998812, now seen corresponding path program 1 times [2023-04-02 06:59:04,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:59:04,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436000981] [2023-04-02 06:59:04,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:59:04,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:59:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:59:05,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:59:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:59:05,131 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 06:59:05,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:59:05,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436000981] [2023-04-02 06:59:05,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436000981] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:59:05,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:59:05,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:59:05,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658700166] [2023-04-02 06:59:05,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:59:05,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:59:05,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:59:05,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:59:05,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:59:05,132 INFO L87 Difference]: Start difference. First operand 77542 states and 120412 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 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 06:59:20,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:59:20,336 INFO L93 Difference]: Finished difference Result 153619 states and 238954 transitions. [2023-04-02 06:59:20,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:59:20,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 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 180 [2023-04-02 06:59:20,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:59:20,657 INFO L225 Difference]: With dead ends: 153619 [2023-04-02 06:59:20,657 INFO L226 Difference]: Without dead ends: 143573 [2023-04-02 06:59:20,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:59:20,717 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 199 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:59:20,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1081 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:59:20,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143573 states. [2023-04-02 06:59:35,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143573 to 143571. [2023-04-02 06:59:35,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143571 states, 143567 states have (on average 1.5536021509121176) internal successors, (223046), 143567 states have internal predecessors, (223046), 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 06:59:36,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143571 states to 143571 states and 223049 transitions. [2023-04-02 06:59:36,341 INFO L78 Accepts]: Start accepts. Automaton has 143571 states and 223049 transitions. Word has length 180 [2023-04-02 06:59:36,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:59:36,341 INFO L495 AbstractCegarLoop]: Abstraction has 143571 states and 223049 transitions. [2023-04-02 06:59:36,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 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 06:59:36,342 INFO L276 IsEmpty]: Start isEmpty. Operand 143571 states and 223049 transitions. [2023-04-02 06:59:36,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-04-02 06:59:36,346 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:59:36,346 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:59:36,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:59:36,346 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:59:36,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:59:36,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1762995231, now seen corresponding path program 1 times [2023-04-02 06:59:36,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:59:36,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145695690] [2023-04-02 06:59:36,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:59:36,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:59:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:59:36,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:59:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:59:36,949 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:59:36,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:59:36,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145695690] [2023-04-02 06:59:36,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145695690] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:59:36,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:59:36,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:59:36,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623157072] [2023-04-02 06:59:36,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:59:36,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:59:36,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:59:36,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:59:36,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:59:36,950 INFO L87 Difference]: Start difference. First operand 143571 states and 223049 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 3 states have internal predecessors, (178), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:11,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:00:11,275 INFO L93 Difference]: Finished difference Result 424935 states and 659594 transitions. [2023-04-02 07:00:11,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:00:11,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 3 states have internal predecessors, (178), 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 181 [2023-04-02 07:00:11,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:00:12,102 INFO L225 Difference]: With dead ends: 424935 [2023-04-02 07:00:12,102 INFO L226 Difference]: Without dead ends: 281429 [2023-04-02 07:00:12,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:00:12,270 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 438 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 07:00:12,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 1385 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 07:00:12,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281429 states. [2023-04-02 07:00:44,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281429 to 281427. [2023-04-02 07:00:44,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281427 states, 281423 states have (on average 1.5454920173546582) internal successors, (434937), 281423 states have internal predecessors, (434937), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:45,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281427 states to 281427 states and 434940 transitions. [2023-04-02 07:00:45,702 INFO L78 Accepts]: Start accepts. Automaton has 281427 states and 434940 transitions. Word has length 181 [2023-04-02 07:00:45,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:00:45,703 INFO L495 AbstractCegarLoop]: Abstraction has 281427 states and 434940 transitions. [2023-04-02 07:00:45,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 3 states have internal predecessors, (178), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:45,703 INFO L276 IsEmpty]: Start isEmpty. Operand 281427 states and 434940 transitions. [2023-04-02 07:00:45,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-04-02 07:00:45,710 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:00:45,711 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:00:45,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 07:00:45,711 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:00:45,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:00:45,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1343267413, now seen corresponding path program 1 times [2023-04-02 07:00:45,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:00:45,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665740035] [2023-04-02 07:00:45,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:00:45,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:00:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:46,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:00:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:46,041 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:00:46,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:00:46,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665740035] [2023-04-02 07:00:46,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665740035] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:00:46,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:00:46,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:00:46,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339746555] [2023-04-02 07:00:46,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:00:46,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:00:46,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:00:46,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:00:46,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:00:46,042 INFO L87 Difference]: Start difference. First operand 281427 states and 434940 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 3 states have internal predecessors, (178), 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)