/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.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 02:00:16,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 02:00:16,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 02:00:16,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-31 02:00:16,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 02:00:16,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 02:00:16,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 02:00:16,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 02:00:16,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 02:00:16,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 02:00:16,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 02:00:16,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 02:00:16,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 02:00:16,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 02:00:16,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 02:00:16,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 02:00:16,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 02:00:16,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 02:00:16,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 02:00:16,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 02:00:16,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 02:00:16,323 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 02:00:16,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 02:00:16,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 02:00:16,324 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 02:00:16,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 02:00:16,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 02:00:16,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 02:00:16,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 02:00:16,325 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 02:00:16,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 02:00:16,325 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 02:00:16,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 02:00:16,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 02:00:16,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 02:00:16,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 02:00:16,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 02:00:16,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 02:00:16,326 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 02:00:16,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 02:00:16,326 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 02:00:16,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 02:00:16,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 02:00:16,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 02:00:16,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 02:00:16,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 02:00:16,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 02:00:16,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 02:00:16,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 02:00:16,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 02:00:16,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 02:00:16,327 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 02:00:16,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 02:00:16,327 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 02:00:16,327 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 02:00:16,328 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 02:00:16,328 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 02:00:16,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 02:00:16,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 02:00:16,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 02:00:16,546 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 02:00:16,547 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 02:00:16,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-03-31 02:00:17,814 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 02:00:18,104 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 02:00:18,104 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-03-31 02:00:18,148 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6621876f/894cc26c89504479b49059b8c92a8e02/FLAGb567ef89d [2023-03-31 02:00:18,174 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6621876f/894cc26c89504479b49059b8c92a8e02 [2023-03-31 02:00:18,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 02:00:18,177 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 02:00:18,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 02:00:18,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 02:00:18,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 02:00:18,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 02:00:18" (1/1) ... [2023-03-31 02:00:18,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408a7b62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:18, skipping insertion in model container [2023-03-31 02:00:18,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 02:00:18" (1/1) ... [2023-03-31 02:00:18,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 02:00:18,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 02:00:18,632 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.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15542,15555] [2023-03-31 02:00:18,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 02:00:18,761 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 02:00:18,852 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.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15542,15555] [2023-03-31 02:00:18,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 02:00:18,892 INFO L208 MainTranslator]: Completed translation [2023-03-31 02:00:18,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:18 WrapperNode [2023-03-31 02:00:18,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 02:00:18,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 02:00:18,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 02:00:18,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 02:00:18,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:18" (1/1) ... [2023-03-31 02:00:18,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:18" (1/1) ... [2023-03-31 02:00:18,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:18" (1/1) ... [2023-03-31 02:00:18,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:18" (1/1) ... [2023-03-31 02:00:18,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:18" (1/1) ... [2023-03-31 02:00:18,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:18" (1/1) ... [2023-03-31 02:00:18,939 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:18" (1/1) ... [2023-03-31 02:00:18,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:18" (1/1) ... [2023-03-31 02:00:18,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 02:00:18,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 02:00:18,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 02:00:18,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 02:00:18,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:18" (1/1) ... [2023-03-31 02:00:18,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 02:00:18,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 02:00:18,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 02:00:18,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 02:00:19,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 02:00:19,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 02:00:19,051 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 02:00:19,051 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 02:00:19,051 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 02:00:19,051 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 02:00:19,052 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 02:00:19,052 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 02:00:19,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 02:00:19,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 02:00:19,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 02:00:19,052 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 02:00:19,052 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 02:00:19,052 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 02:00:19,052 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 02:00:19,052 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 02:00:19,052 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 02:00:19,052 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 02:00:19,053 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 02:00:19,053 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 02:00:19,053 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 02:00:19,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 02:00:19,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 02:00:19,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 02:00:19,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 02:00:19,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 02:00:19,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 02:00:19,231 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 02:00:19,233 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 02:00:20,205 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 02:00:20,220 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 02:00:20,220 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 02:00:20,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 02:00:20 BoogieIcfgContainer [2023-03-31 02:00:20,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 02:00:20,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 02:00:20,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 02:00:20,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 02:00:20,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 02:00:18" (1/3) ... [2023-03-31 02:00:20,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65cf370d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 02:00:20, skipping insertion in model container [2023-03-31 02:00:20,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:00:18" (2/3) ... [2023-03-31 02:00:20,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65cf370d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 02:00:20, skipping insertion in model container [2023-03-31 02:00:20,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 02:00:20" (3/3) ... [2023-03-31 02:00:20,232 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-03-31 02:00:20,247 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 02:00:20,247 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 02:00:20,307 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 02:00:20,314 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;@64bd241c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 02:00:20,314 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 02:00:20,322 INFO L276 IsEmpty]: Start isEmpty. Operand has 337 states, 323 states have (on average 1.7770897832817338) internal successors, (574), 332 states have internal predecessors, (574), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 02:00:20,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-03-31 02:00:20,340 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:20,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:20,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:20,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:20,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1667670464, now seen corresponding path program 1 times [2023-03-31 02:00:20,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:20,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196192248] [2023-03-31 02:00:20,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:20,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:21,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:21,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:21,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196192248] [2023-03-31 02:00:21,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196192248] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:21,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:21,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:00:21,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069955645] [2023-03-31 02:00:21,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:21,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:00:21,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:21,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:00:21,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:21,131 INFO L87 Difference]: Start difference. First operand has 337 states, 323 states have (on average 1.7770897832817338) internal successors, (574), 332 states have internal predecessors, (574), 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 37.75) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:22,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:22,380 INFO L93 Difference]: Finished difference Result 685 states and 1150 transitions. [2023-03-31 02:00:22,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:00:22,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 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 154 [2023-03-31 02:00:22,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:22,390 INFO L225 Difference]: With dead ends: 685 [2023-03-31 02:00:22,391 INFO L226 Difference]: Without dead ends: 524 [2023-03-31 02:00:22,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:00:22,395 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 393 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:22,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 963 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 02:00:22,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2023-03-31 02:00:22,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2023-03-31 02:00:22,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 518 states have (on average 1.4594594594594594) internal successors, (756), 518 states have internal predecessors, (756), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:22,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 759 transitions. [2023-03-31 02:00:22,458 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 759 transitions. Word has length 154 [2023-03-31 02:00:22,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:22,459 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 759 transitions. [2023-03-31 02:00:22,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:22,459 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 759 transitions. [2023-03-31 02:00:22,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-03-31 02:00:22,462 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:22,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:22,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 02:00:22,462 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:22,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:22,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1773974584, now seen corresponding path program 1 times [2023-03-31 02:00:22,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:22,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394389528] [2023-03-31 02:00:22,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:22,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:23,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:23,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:23,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394389528] [2023-03-31 02:00:23,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394389528] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:23,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:23,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:00:23,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013464154] [2023-03-31 02:00:23,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:23,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 02:00:23,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:23,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 02:00:23,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:00:23,041 INFO L87 Difference]: Start difference. First operand 522 states and 759 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:24,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:24,280 INFO L93 Difference]: Finished difference Result 1522 states and 2208 transitions. [2023-03-31 02:00:24,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:00:24,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 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 154 [2023-03-31 02:00:24,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:24,285 INFO L225 Difference]: With dead ends: 1522 [2023-03-31 02:00:24,285 INFO L226 Difference]: Without dead ends: 1013 [2023-03-31 02:00:24,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:00:24,287 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 921 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:24,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 1224 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 02:00:24,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2023-03-31 02:00:24,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1011. [2023-03-31 02:00:24,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 1007 states have (on average 1.4428997020854022) internal successors, (1453), 1007 states have internal predecessors, (1453), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:24,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1456 transitions. [2023-03-31 02:00:24,351 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1456 transitions. Word has length 154 [2023-03-31 02:00:24,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:24,351 INFO L495 AbstractCegarLoop]: Abstraction has 1011 states and 1456 transitions. [2023-03-31 02:00:24,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:24,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1456 transitions. [2023-03-31 02:00:24,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-03-31 02:00:24,356 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:24,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:24,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 02:00:24,357 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:24,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:24,357 INFO L85 PathProgramCache]: Analyzing trace with hash -348572320, now seen corresponding path program 1 times [2023-03-31 02:00:24,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:24,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218755229] [2023-03-31 02:00:24,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:24,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:24,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:24,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:24,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218755229] [2023-03-31 02:00:24,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218755229] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:24,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:24,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:00:24,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646003943] [2023-03-31 02:00:24,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:24,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:00:24,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:24,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:00:24,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:24,610 INFO L87 Difference]: Start difference. First operand 1011 states and 1456 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:25,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:25,909 INFO L93 Difference]: Finished difference Result 2987 states and 4298 transitions. [2023-03-31 02:00:25,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:00:25,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 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 155 [2023-03-31 02:00:25,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:25,915 INFO L225 Difference]: With dead ends: 2987 [2023-03-31 02:00:25,916 INFO L226 Difference]: Without dead ends: 2008 [2023-03-31 02:00:25,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:25,923 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 449 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:25,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1364 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 02:00:25,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2023-03-31 02:00:26,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 1013. [2023-03-31 02:00:26,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1009 states have (on average 1.442021803766105) internal successors, (1455), 1009 states have internal predecessors, (1455), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:26,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1458 transitions. [2023-03-31 02:00:26,006 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1458 transitions. Word has length 155 [2023-03-31 02:00:26,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:26,007 INFO L495 AbstractCegarLoop]: Abstraction has 1013 states and 1458 transitions. [2023-03-31 02:00:26,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:26,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1458 transitions. [2023-03-31 02:00:26,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-03-31 02:00:26,009 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:26,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:26,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 02:00:26,009 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:26,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:26,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1695064111, now seen corresponding path program 1 times [2023-03-31 02:00:26,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:26,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790352354] [2023-03-31 02:00:26,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:26,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:26,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:26,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:26,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:26,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790352354] [2023-03-31 02:00:26,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790352354] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:26,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:26,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:00:26,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824660853] [2023-03-31 02:00:26,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:26,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:00:26,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:26,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:00:26,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:26,290 INFO L87 Difference]: Start difference. First operand 1013 states and 1458 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:27,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:27,588 INFO L93 Difference]: Finished difference Result 2764 states and 3979 transitions. [2023-03-31 02:00:27,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:00:27,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 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 156 [2023-03-31 02:00:27,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:27,594 INFO L225 Difference]: With dead ends: 2764 [2023-03-31 02:00:27,594 INFO L226 Difference]: Without dead ends: 1950 [2023-03-31 02:00:27,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:27,596 INFO L413 NwaCegarLoop]: 870 mSDtfsCounter, 384 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:27,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1290 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 02:00:27,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2023-03-31 02:00:27,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1948. [2023-03-31 02:00:27,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1944 states have (on average 1.4238683127572016) internal successors, (2768), 1944 states have internal predecessors, (2768), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:27,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2771 transitions. [2023-03-31 02:00:27,690 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2771 transitions. Word has length 156 [2023-03-31 02:00:27,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:27,690 INFO L495 AbstractCegarLoop]: Abstraction has 1948 states and 2771 transitions. [2023-03-31 02:00:27,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:27,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2771 transitions. [2023-03-31 02:00:27,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-03-31 02:00:27,693 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:27,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:27,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 02:00:27,694 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:27,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:27,694 INFO L85 PathProgramCache]: Analyzing trace with hash -2092035346, now seen corresponding path program 1 times [2023-03-31 02:00:27,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:27,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31476728] [2023-03-31 02:00:27,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:27,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:28,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:28,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:28,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:28,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31476728] [2023-03-31 02:00:28,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31476728] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:28,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:28,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 02:00:28,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105514371] [2023-03-31 02:00:28,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:28,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 02:00:28,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:28,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 02:00:28,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:00:28,172 INFO L87 Difference]: Start difference. First operand 1948 states and 2771 transitions. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:29,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:29,564 INFO L93 Difference]: Finished difference Result 5541 states and 7868 transitions. [2023-03-31 02:00:29,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:00:29,564 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 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 156 [2023-03-31 02:00:29,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:29,574 INFO L225 Difference]: With dead ends: 5541 [2023-03-31 02:00:29,574 INFO L226 Difference]: Without dead ends: 3611 [2023-03-31 02:00:29,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:00:29,579 INFO L413 NwaCegarLoop]: 787 mSDtfsCounter, 1253 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:29,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 1215 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 02:00:29,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2023-03-31 02:00:29,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 3609. [2023-03-31 02:00:29,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 3605 states have (on average 1.4080443828016644) internal successors, (5076), 3605 states have internal predecessors, (5076), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:29,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 5079 transitions. [2023-03-31 02:00:29,760 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 5079 transitions. Word has length 156 [2023-03-31 02:00:29,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:29,761 INFO L495 AbstractCegarLoop]: Abstraction has 3609 states and 5079 transitions. [2023-03-31 02:00:29,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:29,762 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 5079 transitions. [2023-03-31 02:00:29,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-03-31 02:00:29,765 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:29,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:29,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 02:00:29,766 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:29,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:29,766 INFO L85 PathProgramCache]: Analyzing trace with hash -634168247, now seen corresponding path program 1 times [2023-03-31 02:00:29,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:29,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663887383] [2023-03-31 02:00:29,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:29,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:30,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:30,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:30,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:30,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663887383] [2023-03-31 02:00:30,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663887383] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:30,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:30,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:00:30,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711339780] [2023-03-31 02:00:30,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:30,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 02:00:30,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:30,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 02:00:30,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:00:30,172 INFO L87 Difference]: Start difference. First operand 3609 states and 5079 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:31,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:31,614 INFO L93 Difference]: Finished difference Result 10476 states and 14660 transitions. [2023-03-31 02:00:31,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:00:31,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 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 156 [2023-03-31 02:00:31,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:31,635 INFO L225 Difference]: With dead ends: 10476 [2023-03-31 02:00:31,635 INFO L226 Difference]: Without dead ends: 6927 [2023-03-31 02:00:31,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:00:31,642 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 957 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:31,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 1131 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 02:00:31,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6927 states. [2023-03-31 02:00:32,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6927 to 6925. [2023-03-31 02:00:32,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6925 states, 6921 states have (on average 1.3844820112700478) internal successors, (9582), 6921 states have internal predecessors, (9582), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:32,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6925 states to 6925 states and 9585 transitions. [2023-03-31 02:00:32,083 INFO L78 Accepts]: Start accepts. Automaton has 6925 states and 9585 transitions. Word has length 156 [2023-03-31 02:00:32,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:32,083 INFO L495 AbstractCegarLoop]: Abstraction has 6925 states and 9585 transitions. [2023-03-31 02:00:32,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:32,083 INFO L276 IsEmpty]: Start isEmpty. Operand 6925 states and 9585 transitions. [2023-03-31 02:00:32,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-03-31 02:00:32,090 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:32,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:32,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 02:00:32,091 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:32,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:32,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1965419585, now seen corresponding path program 1 times [2023-03-31 02:00:32,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:32,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359907225] [2023-03-31 02:00:32,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:32,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:32,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:32,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:32,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:32,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359907225] [2023-03-31 02:00:32,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359907225] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:32,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:32,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:00:32,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300210475] [2023-03-31 02:00:32,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:32,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:00:32,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:32,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:00:32,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:32,299 INFO L87 Difference]: Start difference. First operand 6925 states and 9585 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:33,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:33,920 INFO L93 Difference]: Finished difference Result 20615 states and 28514 transitions. [2023-03-31 02:00:33,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:00:33,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 157 [2023-03-31 02:00:33,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:33,969 INFO L225 Difference]: With dead ends: 20615 [2023-03-31 02:00:33,969 INFO L226 Difference]: Without dead ends: 13785 [2023-03-31 02:00:33,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:33,986 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 435 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:33,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 1102 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 02:00:33,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13785 states. [2023-03-31 02:00:34,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13785 to 6935. [2023-03-31 02:00:34,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6935 states, 6931 states have (on average 1.3839272832203144) internal successors, (9592), 6931 states have internal predecessors, (9592), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:34,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6935 states to 6935 states and 9595 transitions. [2023-03-31 02:00:34,492 INFO L78 Accepts]: Start accepts. Automaton has 6935 states and 9595 transitions. Word has length 157 [2023-03-31 02:00:34,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:34,493 INFO L495 AbstractCegarLoop]: Abstraction has 6935 states and 9595 transitions. [2023-03-31 02:00:34,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:34,493 INFO L276 IsEmpty]: Start isEmpty. Operand 6935 states and 9595 transitions. [2023-03-31 02:00:34,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-03-31 02:00:34,506 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:34,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:34,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 02:00:34,507 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:34,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:34,507 INFO L85 PathProgramCache]: Analyzing trace with hash -480755382, now seen corresponding path program 1 times [2023-03-31 02:00:34,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:34,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967677282] [2023-03-31 02:00:34,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:34,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:34,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:34,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:34,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:34,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967677282] [2023-03-31 02:00:34,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967677282] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:34,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:34,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:00:34,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065200281] [2023-03-31 02:00:34,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:34,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 02:00:34,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:34,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 02:00:34,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:00:34,952 INFO L87 Difference]: Start difference. First operand 6935 states and 9595 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 4 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) [2023-03-31 02:00:36,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:36,818 INFO L93 Difference]: Finished difference Result 18797 states and 25862 transitions. [2023-03-31 02:00:36,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:00:36,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 4 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 158 [2023-03-31 02:00:36,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:36,869 INFO L225 Difference]: With dead ends: 18797 [2023-03-31 02:00:36,869 INFO L226 Difference]: Without dead ends: 11967 [2023-03-31 02:00:36,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:00:36,892 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 935 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:36,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 1136 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 02:00:36,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11967 states. [2023-03-31 02:00:37,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11967 to 11965. [2023-03-31 02:00:37,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11965 states, 11961 states have (on average 1.3570771674609146) internal successors, (16232), 11961 states have internal predecessors, (16232), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:37,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11965 states to 11965 states and 16235 transitions. [2023-03-31 02:00:37,793 INFO L78 Accepts]: Start accepts. Automaton has 11965 states and 16235 transitions. Word has length 158 [2023-03-31 02:00:37,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:37,793 INFO L495 AbstractCegarLoop]: Abstraction has 11965 states and 16235 transitions. [2023-03-31 02:00:37,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 4 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) [2023-03-31 02:00:37,794 INFO L276 IsEmpty]: Start isEmpty. Operand 11965 states and 16235 transitions. [2023-03-31 02:00:37,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-03-31 02:00:37,806 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:37,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:37,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 02:00:37,806 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:37,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:37,806 INFO L85 PathProgramCache]: Analyzing trace with hash 812158882, now seen corresponding path program 1 times [2023-03-31 02:00:37,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:37,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368650530] [2023-03-31 02:00:37,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:37,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:38,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:38,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:38,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:38,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368650530] [2023-03-31 02:00:38,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368650530] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:38,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:38,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:00:38,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666879482] [2023-03-31 02:00:38,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:38,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:00:38,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:38,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:00:38,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:38,068 INFO L87 Difference]: Start difference. First operand 11965 states and 16235 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:40,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:40,900 INFO L93 Difference]: Finished difference Result 34661 states and 47135 transitions. [2023-03-31 02:00:40,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:00:40,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 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 159 [2023-03-31 02:00:40,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:40,939 INFO L225 Difference]: With dead ends: 34661 [2023-03-31 02:00:40,939 INFO L226 Difference]: Without dead ends: 23643 [2023-03-31 02:00:40,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:40,957 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 421 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:40,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1336 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 02:00:40,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23643 states. [2023-03-31 02:00:41,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23643 to 11985. [2023-03-31 02:00:41,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11985 states, 11981 states have (on average 1.3564810950671897) internal successors, (16252), 11981 states have internal predecessors, (16252), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:42,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11985 states to 11985 states and 16255 transitions. [2023-03-31 02:00:42,008 INFO L78 Accepts]: Start accepts. Automaton has 11985 states and 16255 transitions. Word has length 159 [2023-03-31 02:00:42,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:42,008 INFO L495 AbstractCegarLoop]: Abstraction has 11985 states and 16255 transitions. [2023-03-31 02:00:42,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:42,009 INFO L276 IsEmpty]: Start isEmpty. Operand 11985 states and 16255 transitions. [2023-03-31 02:00:42,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-03-31 02:00:42,022 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:42,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:42,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 02:00:42,023 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:42,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:42,023 INFO L85 PathProgramCache]: Analyzing trace with hash -561087816, now seen corresponding path program 1 times [2023-03-31 02:00:42,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:42,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307099751] [2023-03-31 02:00:42,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:42,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:42,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:42,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:42,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307099751] [2023-03-31 02:00:42,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307099751] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:42,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:42,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 02:00:42,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769720131] [2023-03-31 02:00:42,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:42,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 02:00:42,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:42,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 02:00:42,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:00:42,422 INFO L87 Difference]: Start difference. First operand 11985 states and 16255 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 5 states have internal predecessors, (157), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:44,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:44,580 INFO L93 Difference]: Finished difference Result 24653 states and 33301 transitions. [2023-03-31 02:00:44,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:00:44,581 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 5 states have internal predecessors, (157), 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 160 [2023-03-31 02:00:44,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:44,599 INFO L225 Difference]: With dead ends: 24653 [2023-03-31 02:00:44,599 INFO L226 Difference]: Without dead ends: 12897 [2023-03-31 02:00:44,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:00:44,615 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 1208 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:44,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1208 Valid, 1144 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 02:00:44,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12897 states. [2023-03-31 02:00:45,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12897 to 12517. [2023-03-31 02:00:45,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12517 states, 12513 states have (on average 1.346839287141373) internal successors, (16853), 12513 states have internal predecessors, (16853), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:45,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12517 states to 12517 states and 16856 transitions. [2023-03-31 02:00:45,628 INFO L78 Accepts]: Start accepts. Automaton has 12517 states and 16856 transitions. Word has length 160 [2023-03-31 02:00:45,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:45,630 INFO L495 AbstractCegarLoop]: Abstraction has 12517 states and 16856 transitions. [2023-03-31 02:00:45,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 5 states have internal predecessors, (157), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:45,630 INFO L276 IsEmpty]: Start isEmpty. Operand 12517 states and 16856 transitions. [2023-03-31 02:00:45,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-03-31 02:00:45,643 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:45,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:45,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 02:00:45,643 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:45,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:45,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1631765813, now seen corresponding path program 1 times [2023-03-31 02:00:45,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:45,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327841506] [2023-03-31 02:00:45,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:45,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:45,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:45,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:45,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:45,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327841506] [2023-03-31 02:00:45,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327841506] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:45,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:45,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:00:45,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19492433] [2023-03-31 02:00:45,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:45,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 02:00:45,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:45,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 02:00:45,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:00:45,997 INFO L87 Difference]: Start difference. First operand 12517 states and 16856 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:47,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:47,351 INFO L93 Difference]: Finished difference Result 20360 states and 27440 transitions. [2023-03-31 02:00:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:00:47,353 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 160 [2023-03-31 02:00:47,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:47,364 INFO L225 Difference]: With dead ends: 20360 [2023-03-31 02:00:47,364 INFO L226 Difference]: Without dead ends: 8028 [2023-03-31 02:00:47,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:00:47,381 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 65 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:47,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1418 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 02:00:47,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8028 states. [2023-03-31 02:00:48,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8028 to 8028. [2023-03-31 02:00:48,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8028 states, 8024 states have (on average 1.344840478564307) internal successors, (10791), 8024 states have internal predecessors, (10791), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:48,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8028 states to 8028 states and 10794 transitions. [2023-03-31 02:00:48,357 INFO L78 Accepts]: Start accepts. Automaton has 8028 states and 10794 transitions. Word has length 160 [2023-03-31 02:00:48,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:48,357 INFO L495 AbstractCegarLoop]: Abstraction has 8028 states and 10794 transitions. [2023-03-31 02:00:48,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:48,357 INFO L276 IsEmpty]: Start isEmpty. Operand 8028 states and 10794 transitions. [2023-03-31 02:00:48,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-03-31 02:00:48,366 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:48,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:48,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-03-31 02:00:48,366 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:48,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:48,367 INFO L85 PathProgramCache]: Analyzing trace with hash -652151787, now seen corresponding path program 1 times [2023-03-31 02:00:48,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:48,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899647479] [2023-03-31 02:00:48,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:48,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:48,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:48,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:48,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:48,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899647479] [2023-03-31 02:00:48,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899647479] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:48,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:48,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:00:48,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923440010] [2023-03-31 02:00:48,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:48,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:00:48,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:48,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:00:48,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:48,616 INFO L87 Difference]: Start difference. First operand 8028 states and 10794 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:50,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:50,327 INFO L93 Difference]: Finished difference Result 17442 states and 24101 transitions. [2023-03-31 02:00:50,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:00:50,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 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 163 [2023-03-31 02:00:50,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:50,344 INFO L225 Difference]: With dead ends: 17442 [2023-03-31 02:00:50,344 INFO L226 Difference]: Without dead ends: 10384 [2023-03-31 02:00:50,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:50,355 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 217 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:50,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 921 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-31 02:00:50,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10384 states. [2023-03-31 02:00:51,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10384 to 10237. [2023-03-31 02:00:51,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10237 states, 10233 states have (on average 1.3774064301768787) internal successors, (14095), 10233 states have internal predecessors, (14095), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:51,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10237 states to 10237 states and 14098 transitions. [2023-03-31 02:00:51,317 INFO L78 Accepts]: Start accepts. Automaton has 10237 states and 14098 transitions. Word has length 163 [2023-03-31 02:00:51,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:51,317 INFO L495 AbstractCegarLoop]: Abstraction has 10237 states and 14098 transitions. [2023-03-31 02:00:51,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:51,317 INFO L276 IsEmpty]: Start isEmpty. Operand 10237 states and 14098 transitions. [2023-03-31 02:00:51,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-03-31 02:00:51,324 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:51,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:51,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-03-31 02:00:51,324 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:51,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:51,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1730973737, now seen corresponding path program 1 times [2023-03-31 02:00:51,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:51,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904845520] [2023-03-31 02:00:51,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:51,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:51,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:51,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:51,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:51,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904845520] [2023-03-31 02:00:51,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904845520] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:51,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:51,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:00:51,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177802210] [2023-03-31 02:00:51,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:51,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:00:51,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:51,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:00:51,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:51,614 INFO L87 Difference]: Start difference. First operand 10237 states and 14098 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:54,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:54,516 INFO L93 Difference]: Finished difference Result 28008 states and 38714 transitions. [2023-03-31 02:00:54,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:00:54,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 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 166 [2023-03-31 02:00:54,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:54,540 INFO L225 Difference]: With dead ends: 28008 [2023-03-31 02:00:54,540 INFO L226 Difference]: Without dead ends: 19259 [2023-03-31 02:00:54,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:54,550 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 372 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:54,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1267 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 02:00:54,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19259 states. [2023-03-31 02:00:56,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19259 to 19257. [2023-03-31 02:00:56,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19257 states, 19253 states have (on average 1.3578143665922193) internal successors, (26142), 19253 states have internal predecessors, (26142), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:56,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19257 states to 19257 states and 26145 transitions. [2023-03-31 02:00:56,400 INFO L78 Accepts]: Start accepts. Automaton has 19257 states and 26145 transitions. Word has length 166 [2023-03-31 02:00:56,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:56,401 INFO L495 AbstractCegarLoop]: Abstraction has 19257 states and 26145 transitions. [2023-03-31 02:00:56,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:00:56,401 INFO L276 IsEmpty]: Start isEmpty. Operand 19257 states and 26145 transitions. [2023-03-31 02:00:56,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-03-31 02:00:56,415 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:56,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:00:56,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-03-31 02:00:56,416 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:56,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:56,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1054922310, now seen corresponding path program 1 times [2023-03-31 02:00:56,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:56,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603806809] [2023-03-31 02:00:56,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:56,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:56,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:56,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:00:56,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:56,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603806809] [2023-03-31 02:00:56,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603806809] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:56,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:56,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:00:56,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608787847] [2023-03-31 02:00:56,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:56,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 02:00:56,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:56,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 02:00:56,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:00:56,954 INFO L87 Difference]: Start difference. First operand 19257 states and 26145 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:01,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:01:01,289 INFO L93 Difference]: Finished difference Result 45735 states and 63843 transitions. [2023-03-31 02:01:01,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 02:01:01,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 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 166 [2023-03-31 02:01:01,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:01:01,337 INFO L225 Difference]: With dead ends: 45735 [2023-03-31 02:01:01,337 INFO L226 Difference]: Without dead ends: 35018 [2023-03-31 02:01:01,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:01:01,351 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 782 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 02:01:01,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 843 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 02:01:01,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35018 states. [2023-03-31 02:01:05,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35018 to 35016. [2023-03-31 02:01:05,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35016 states, 35012 states have (on average 1.367731063635325) internal successors, (47887), 35012 states have internal predecessors, (47887), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:05,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35016 states to 35016 states and 47890 transitions. [2023-03-31 02:01:05,114 INFO L78 Accepts]: Start accepts. Automaton has 35016 states and 47890 transitions. Word has length 166 [2023-03-31 02:01:05,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:01:05,114 INFO L495 AbstractCegarLoop]: Abstraction has 35016 states and 47890 transitions. [2023-03-31 02:01:05,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:05,115 INFO L276 IsEmpty]: Start isEmpty. Operand 35016 states and 47890 transitions. [2023-03-31 02:01:05,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-03-31 02:01:05,136 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:01:05,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:01:05,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-03-31 02:01:05,136 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:01:05,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:01:05,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1687804340, now seen corresponding path program 1 times [2023-03-31 02:01:05,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:01:05,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715354039] [2023-03-31 02:01:05,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:01:05,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:01:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:05,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:01:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:05,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:01:05,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:01:05,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715354039] [2023-03-31 02:01:05,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715354039] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:01:05,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:01:05,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:01:05,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909477549] [2023-03-31 02:01:05,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:01:05,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 02:01:05,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:01:05,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 02:01:05,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:01:05,475 INFO L87 Difference]: Start difference. First operand 35016 states and 47890 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:09,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:01:09,112 INFO L93 Difference]: Finished difference Result 55515 states and 76068 transitions. [2023-03-31 02:01:09,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:01:09,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 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 166 [2023-03-31 02:01:09,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:01:09,154 INFO L225 Difference]: With dead ends: 55515 [2023-03-31 02:01:09,154 INFO L226 Difference]: Without dead ends: 28403 [2023-03-31 02:01:09,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:01:09,183 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 53 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 02:01:09,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1401 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 02:01:09,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28403 states. [2023-03-31 02:01:12,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28403 to 28403. [2023-03-31 02:01:12,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28403 states, 28399 states have (on average 1.3665974154019507) internal successors, (38810), 28399 states have internal predecessors, (38810), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:12,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28403 states to 28403 states and 38813 transitions. [2023-03-31 02:01:12,837 INFO L78 Accepts]: Start accepts. Automaton has 28403 states and 38813 transitions. Word has length 166 [2023-03-31 02:01:12,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:01:12,837 INFO L495 AbstractCegarLoop]: Abstraction has 28403 states and 38813 transitions. [2023-03-31 02:01:12,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:12,837 INFO L276 IsEmpty]: Start isEmpty. Operand 28403 states and 38813 transitions. [2023-03-31 02:01:12,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-03-31 02:01:12,854 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:01:12,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:01:12,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-03-31 02:01:12,862 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:01:12,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:01:12,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1082763363, now seen corresponding path program 1 times [2023-03-31 02:01:12,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:01:12,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057963] [2023-03-31 02:01:12,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:01:12,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:01:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:13,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:01:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:13,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:01:13,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:01:13,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057963] [2023-03-31 02:01:13,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057963] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:01:13,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:01:13,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:01:13,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095830623] [2023-03-31 02:01:13,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:01:13,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:01:13,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:01:13,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:01:13,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:01:13,199 INFO L87 Difference]: Start difference. First operand 28403 states and 38813 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:18,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:01:18,899 INFO L93 Difference]: Finished difference Result 65722 states and 90708 transitions. [2023-03-31 02:01:18,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:01:18,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 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 170 [2023-03-31 02:01:18,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:01:18,956 INFO L225 Difference]: With dead ends: 65722 [2023-03-31 02:01:18,956 INFO L226 Difference]: Without dead ends: 43109 [2023-03-31 02:01:18,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:01:18,975 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 286 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 02:01:18,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 934 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 02:01:19,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43109 states.