/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/eca-rers2012/Problem18_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:40:06,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:40:06,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:40:06,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 23:40:07,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 23:40:07,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 23:40:07,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 23:40:07,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 23:40:07,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 23:40:07,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 23:40:07,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 23:40:07,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 23:40:07,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 23:40:07,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 23:40:07,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 23:40:07,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 23:40:07,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 23:40:07,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 23:40:07,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 23:40:07,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 23:40:07,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 23:40:07,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 23:40:07,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 23:40:07,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 23:40:07,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 23:40:07,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 23:40:07,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 23:40:07,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 23:40:07,030 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 23:40:07,047 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:40:07,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:40:07,048 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:40:07,048 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:40:07,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:40:07,049 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:40:07,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:40:07,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:40:07,049 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:40:07,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:40:07,050 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:40:07,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:40:07,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:40:07,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:40:07,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:40:07,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:40:07,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:40:07,051 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:40:07,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:40:07,051 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:40:07,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:40:07,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:40:07,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:40:07,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:40:07,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:40:07,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:40:07,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:40:07,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:40:07,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:40:07,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:40:07,052 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:40:07,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:40:07,052 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:40:07,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:40:07,052 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:40:07,053 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:40:07,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:40:07,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:40:07,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:40:07,249 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:40:07,249 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:40:07,250 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem18_label14.c [2023-04-01 23:40:08,181 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:40:08,579 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:40:08,579 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label14.c [2023-04-01 23:40:08,603 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5790545d/680b130e37434b709aa879f66eaebc6e/FLAG8704aac97 [2023-04-01 23:40:08,785 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5790545d/680b130e37434b709aa879f66eaebc6e [2023-04-01 23:40:08,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:40:08,788 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:40:08,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:40:08,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:40:08,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:40:08,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:40:08" (1/1) ... [2023-04-01 23:40:08,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b131a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:08, skipping insertion in model container [2023-04-01 23:40:08,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:40:08" (1/1) ... [2023-04-01 23:40:08,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:40:08,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:40:09,034 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label14.c[5298,5311] [2023-04-01 23:40:09,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:40:09,438 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:40:09,482 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/eca-rers2012/Problem18_label14.c[5298,5311] [2023-04-01 23:40:09,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:40:09,684 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:40:09,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:09 WrapperNode [2023-04-01 23:40:09,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:40:09,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:40:09,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:40:09,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:40:09,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:09" (1/1) ... [2023-04-01 23:40:09,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:09" (1/1) ... [2023-04-01 23:40:09,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:09" (1/1) ... [2023-04-01 23:40:09,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:09" (1/1) ... [2023-04-01 23:40:09,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:09" (1/1) ... [2023-04-01 23:40:09,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:09" (1/1) ... [2023-04-01 23:40:09,832 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:09" (1/1) ... [2023-04-01 23:40:09,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:09" (1/1) ... [2023-04-01 23:40:09,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:40:09,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:40:09,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:40:09,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:40:09,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:09" (1/1) ... [2023-04-01 23:40:09,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:40:09,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:09,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 23:40:09,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 23:40:09,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:40:09,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:40:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:40:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:40:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:40:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 23:40:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:40:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:40:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:40:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 23:40:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:40:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:40:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:40:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:40:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:40:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:40:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:40:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:40:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:40:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:40:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:40:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:40:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:40:10,025 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:40:10,026 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:40:12,185 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:40:12,193 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:40:12,194 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:40:12,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:40:12 BoogieIcfgContainer [2023-04-01 23:40:12,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:40:12,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:40:12,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:40:12,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:40:12,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:40:08" (1/3) ... [2023-04-01 23:40:12,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1535919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:40:12, skipping insertion in model container [2023-04-01 23:40:12,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:40:09" (2/3) ... [2023-04-01 23:40:12,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1535919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:40:12, skipping insertion in model container [2023-04-01 23:40:12,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:40:12" (3/3) ... [2023-04-01 23:40:12,202 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label14.c [2023-04-01 23:40:12,214 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:40:12,214 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:40:12,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:40:12,262 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;@ae3c15, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:40:12,262 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:40:12,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 23:40:12,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-01 23:40:12,274 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:12,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:12,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:12,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:12,279 INFO L85 PathProgramCache]: Analyzing trace with hash -696113117, now seen corresponding path program 1 times [2023-04-01 23:40:12,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:12,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756871810] [2023-04-01 23:40:12,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:12,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:12,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:40:12,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:12,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756871810] [2023-04-01 23:40:12,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756871810] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:40:12,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:40:12,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 23:40:12,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259810285] [2023-04-01 23:40:12,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:12,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:40:12,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:12,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:40:12,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:40:12,776 INFO L87 Difference]: Start difference. First operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:40:16,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:16,474 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2023-04-01 23:40:16,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 23:40:16,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2023-04-01 23:40:16,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:16,489 INFO L225 Difference]: With dead ends: 2270 [2023-04-01 23:40:16,489 INFO L226 Difference]: Without dead ends: 1432 [2023-04-01 23:40:16,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:40:16,497 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2285 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 4241 mSolverCounterSat, 562 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2285 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 4803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 4241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:16,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2285 Valid, 51 Invalid, 4803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [562 Valid, 4241 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-04-01 23:40:16,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2023-04-01 23:40:16,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2023-04-01 23:40:16,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1404 states have (on average 1.8639601139601139) internal successors, (2617), 1406 states have internal predecessors, (2617), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) [2023-04-01 23:40:16,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2643 transitions. [2023-04-01 23:40:16,584 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2643 transitions. Word has length 56 [2023-04-01 23:40:16,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:16,585 INFO L495 AbstractCegarLoop]: Abstraction has 1425 states and 2643 transitions. [2023-04-01 23:40:16,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:40:16,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2643 transitions. [2023-04-01 23:40:16,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-04-01 23:40:16,588 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:16,588 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:16,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:40:16,588 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:16,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:16,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1312221475, now seen corresponding path program 1 times [2023-04-01 23:40:16,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:16,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247904162] [2023-04-01 23:40:16,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:16,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:16,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:16,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:40:16,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:16,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247904162] [2023-04-01 23:40:16,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247904162] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:40:16,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:40:16,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 23:40:16,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825406453] [2023-04-01 23:40:16,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:16,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 23:40:16,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:16,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 23:40:16,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:40:16,796 INFO L87 Difference]: Start difference. First operand 1425 states and 2643 transitions. Second operand has 8 states, 7 states have (on average 17.0) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:40:21,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:21,896 INFO L93 Difference]: Finished difference Result 5772 states and 10805 transitions. [2023-04-01 23:40:21,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 23:40:21,896 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.0) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 125 [2023-04-01 23:40:21,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:21,912 INFO L225 Difference]: With dead ends: 5772 [2023-04-01 23:40:21,912 INFO L226 Difference]: Without dead ends: 4353 [2023-04-01 23:40:21,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:40:21,916 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 5945 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 5140 mSolverCounterSat, 1773 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5945 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 6913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1773 IncrementalHoareTripleChecker+Valid, 5140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:21,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5945 Valid, 114 Invalid, 6913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1773 Valid, 5140 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-04-01 23:40:21,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4353 states. [2023-04-01 23:40:21,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4353 to 4331. [2023-04-01 23:40:21,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4331 states, 4249 states have (on average 1.5245940221228524) internal successors, (6478), 4264 states have internal predecessors, (6478), 20 states have call successors, (20), 20 states have call predecessors, (20), 61 states have return successors, (184), 46 states have call predecessors, (184), 19 states have call successors, (184) [2023-04-01 23:40:22,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4331 states to 4331 states and 6682 transitions. [2023-04-01 23:40:22,001 INFO L78 Accepts]: Start accepts. Automaton has 4331 states and 6682 transitions. Word has length 125 [2023-04-01 23:40:22,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:22,002 INFO L495 AbstractCegarLoop]: Abstraction has 4331 states and 6682 transitions. [2023-04-01 23:40:22,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.0) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:40:22,002 INFO L276 IsEmpty]: Start isEmpty. Operand 4331 states and 6682 transitions. [2023-04-01 23:40:22,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-01 23:40:22,009 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:22,009 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:22,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:40:22,009 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:22,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:22,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1754000890, now seen corresponding path program 1 times [2023-04-01 23:40:22,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:22,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592987257] [2023-04-01 23:40:22,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:22,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:22,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:22,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:22,434 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:40:22,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:22,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592987257] [2023-04-01 23:40:22,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592987257] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:40:22,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:40:22,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 23:40:22,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537948368] [2023-04-01 23:40:22,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:22,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 23:40:22,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:22,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 23:40:22,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-01 23:40:22,439 INFO L87 Difference]: Start difference. First operand 4331 states and 6682 transitions. Second operand has 9 states, 7 states have (on average 17.428571428571427) internal successors, (122), 5 states have internal predecessors, (122), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:40:27,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:27,704 INFO L93 Difference]: Finished difference Result 14429 states and 22142 transitions. [2023-04-01 23:40:27,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 23:40:27,704 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 17.428571428571427) internal successors, (122), 5 states have internal predecessors, (122), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 128 [2023-04-01 23:40:27,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:27,734 INFO L225 Difference]: With dead ends: 14429 [2023-04-01 23:40:27,735 INFO L226 Difference]: Without dead ends: 10104 [2023-04-01 23:40:27,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:40:27,742 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 5559 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 7765 mSolverCounterSat, 1226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5559 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 8991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1226 IncrementalHoareTripleChecker+Valid, 7765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:27,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5559 Valid, 123 Invalid, 8991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1226 Valid, 7765 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-04-01 23:40:27,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10104 states. [2023-04-01 23:40:27,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10104 to 8671. [2023-04-01 23:40:27,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8671 states, 8503 states have (on average 1.3208279430789134) internal successors, (11231), 8540 states have internal predecessors, (11231), 38 states have call successors, (38), 38 states have call predecessors, (38), 129 states have return successors, (561), 92 states have call predecessors, (561), 37 states have call successors, (561) [2023-04-01 23:40:27,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8671 states to 8671 states and 11830 transitions. [2023-04-01 23:40:27,926 INFO L78 Accepts]: Start accepts. Automaton has 8671 states and 11830 transitions. Word has length 128 [2023-04-01 23:40:27,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:27,926 INFO L495 AbstractCegarLoop]: Abstraction has 8671 states and 11830 transitions. [2023-04-01 23:40:27,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 17.428571428571427) internal successors, (122), 5 states have internal predecessors, (122), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:40:27,926 INFO L276 IsEmpty]: Start isEmpty. Operand 8671 states and 11830 transitions. [2023-04-01 23:40:27,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-04-01 23:40:27,927 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:27,927 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:27,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 23:40:27,928 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:27,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:27,928 INFO L85 PathProgramCache]: Analyzing trace with hash -15890331, now seen corresponding path program 1 times [2023-04-01 23:40:27,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:27,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526673829] [2023-04-01 23:40:27,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:27,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:28,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:28,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:28,355 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 3 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:40:28,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:28,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526673829] [2023-04-01 23:40:28,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526673829] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:28,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573447114] [2023-04-01 23:40:28,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:28,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:28,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:28,362 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:28,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 23:40:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:28,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-01 23:40:28,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:29,121 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:40:29,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:40:29,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573447114] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:40:29,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:40:29,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2023-04-01 23:40:29,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130478220] [2023-04-01 23:40:29,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:29,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:40:29,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:29,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:40:29,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:40:29,124 INFO L87 Difference]: Start difference. First operand 8671 states and 11830 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:40:32,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:32,881 INFO L93 Difference]: Finished difference Result 21126 states and 29368 transitions. [2023-04-01 23:40:32,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:40:32,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 153 [2023-04-01 23:40:32,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:32,923 INFO L225 Difference]: With dead ends: 21126 [2023-04-01 23:40:32,923 INFO L226 Difference]: Without dead ends: 12461 [2023-04-01 23:40:32,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:40:32,940 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 1922 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 4928 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 5515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 4928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:32,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1922 Valid, 134 Invalid, 5515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 4928 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-01 23:40:32,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12461 states. [2023-04-01 23:40:33,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12461 to 12390. [2023-04-01 23:40:33,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12390 states, 12110 states have (on average 1.2505367464905037) internal successors, (15144), 12184 states have internal predecessors, (15144), 53 states have call successors, (53), 53 states have call predecessors, (53), 226 states have return successors, (1059), 152 states have call predecessors, (1059), 52 states have call successors, (1059) [2023-04-01 23:40:33,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12390 states to 12390 states and 16256 transitions. [2023-04-01 23:40:33,234 INFO L78 Accepts]: Start accepts. Automaton has 12390 states and 16256 transitions. Word has length 153 [2023-04-01 23:40:33,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:33,235 INFO L495 AbstractCegarLoop]: Abstraction has 12390 states and 16256 transitions. [2023-04-01 23:40:33,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:40:33,236 INFO L276 IsEmpty]: Start isEmpty. Operand 12390 states and 16256 transitions. [2023-04-01 23:40:33,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-04-01 23:40:33,240 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:33,240 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:33,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 23:40:33,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:33,444 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:33,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:33,445 INFO L85 PathProgramCache]: Analyzing trace with hash 888996482, now seen corresponding path program 1 times [2023-04-01 23:40:33,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:33,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487898249] [2023-04-01 23:40:33,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:33,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:33,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:33,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:33,797 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 23:40:33,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:33,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487898249] [2023-04-01 23:40:33,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487898249] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:33,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363642452] [2023-04-01 23:40:33,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:33,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:33,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:33,799 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:33,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 23:40:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:33,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:40:33,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:34,109 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 23:40:34,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:40:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 23:40:34,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363642452] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:34,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 23:40:34,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-04-01 23:40:34,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299808788] [2023-04-01 23:40:34,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:34,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 23:40:34,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:34,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 23:40:34,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-04-01 23:40:34,630 INFO L87 Difference]: Start difference. First operand 12390 states and 16256 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:40:37,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:37,406 INFO L93 Difference]: Finished difference Result 32693 states and 44358 transitions. [2023-04-01 23:40:37,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 23:40:37,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 242 [2023-04-01 23:40:37,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:37,455 INFO L225 Difference]: With dead ends: 32693 [2023-04-01 23:40:37,455 INFO L226 Difference]: Without dead ends: 20309 [2023-04-01 23:40:37,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 482 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-04-01 23:40:37,474 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 2051 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 1744 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2051 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 3877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1744 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:37,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2051 Valid, 46 Invalid, 3877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1744 Valid, 2133 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-01 23:40:37,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20309 states. [2023-04-01 23:40:37,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20309 to 18861. [2023-04-01 23:40:37,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18861 states, 18466 states have (on average 1.267302068666739) internal successors, (23402), 18570 states have internal predecessors, (23402), 80 states have call successors, (80), 80 states have call predecessors, (80), 314 states have return successors, (1859), 210 states have call predecessors, (1859), 79 states have call successors, (1859) [2023-04-01 23:40:37,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18861 states to 18861 states and 25341 transitions. [2023-04-01 23:40:37,785 INFO L78 Accepts]: Start accepts. Automaton has 18861 states and 25341 transitions. Word has length 242 [2023-04-01 23:40:37,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:37,786 INFO L495 AbstractCegarLoop]: Abstraction has 18861 states and 25341 transitions. [2023-04-01 23:40:37,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:40:37,786 INFO L276 IsEmpty]: Start isEmpty. Operand 18861 states and 25341 transitions. [2023-04-01 23:40:37,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-04-01 23:40:37,791 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:37,791 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:37,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 23:40:37,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:37,996 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:37,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:37,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1436309205, now seen corresponding path program 1 times [2023-04-01 23:40:37,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:37,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152379938] [2023-04-01 23:40:37,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:37,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:38,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:38,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:38,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2023-04-01 23:40:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:38,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2023-04-01 23:40:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:38,748 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 155 proven. 234 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 23:40:38,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:38,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152379938] [2023-04-01 23:40:38,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152379938] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:38,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858151546] [2023-04-01 23:40:38,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:38,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:38,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:38,750 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:38,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 23:40:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:38,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:40:38,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-04-01 23:40:39,197 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:40:39,807 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 154 proven. 165 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-04-01 23:40:39,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858151546] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:40:39,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:40:39,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2023-04-01 23:40:39,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818096211] [2023-04-01 23:40:39,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:40:39,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 23:40:39,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:39,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 23:40:39,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:40:39,810 INFO L87 Difference]: Start difference. First operand 18861 states and 25341 transitions. Second operand has 14 states, 14 states have (on average 58.785714285714285) internal successors, (823), 12 states have internal predecessors, (823), 5 states have call successors, (11), 8 states have call predecessors, (11), 9 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 23:40:50,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:50,926 INFO L93 Difference]: Finished difference Result 59010 states and 81163 transitions. [2023-04-01 23:40:50,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-04-01 23:40:50,927 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 58.785714285714285) internal successors, (823), 12 states have internal predecessors, (823), 5 states have call successors, (11), 8 states have call predecessors, (11), 9 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 415 [2023-04-01 23:40:50,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:51,070 INFO L225 Difference]: With dead ends: 59010 [2023-04-01 23:40:51,070 INFO L226 Difference]: Without dead ends: 39862 [2023-04-01 23:40:51,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 939 GetRequests, 875 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=664, Invalid=3368, Unknown=0, NotChecked=0, Total=4032 [2023-04-01 23:40:51,101 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 8232 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 19356 mSolverCounterSat, 2416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8236 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 21772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2416 IncrementalHoareTripleChecker+Valid, 19356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:51,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8236 Valid, 509 Invalid, 21772 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2416 Valid, 19356 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2023-04-01 23:40:51,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39862 states. [2023-04-01 23:40:51,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39862 to 35371. [2023-04-01 23:40:51,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35371 states, 34690 states have (on average 1.1312481983280485) internal successors, (39243), 34874 states have internal predecessors, (39243), 149 states have call successors, (149), 149 states have call predecessors, (149), 531 states have return successors, (3833), 347 states have call predecessors, (3833), 148 states have call successors, (3833) [2023-04-01 23:40:51,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35371 states to 35371 states and 43225 transitions. [2023-04-01 23:40:51,772 INFO L78 Accepts]: Start accepts. Automaton has 35371 states and 43225 transitions. Word has length 415 [2023-04-01 23:40:51,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:51,772 INFO L495 AbstractCegarLoop]: Abstraction has 35371 states and 43225 transitions. [2023-04-01 23:40:51,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 58.785714285714285) internal successors, (823), 12 states have internal predecessors, (823), 5 states have call successors, (11), 8 states have call predecessors, (11), 9 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 23:40:51,773 INFO L276 IsEmpty]: Start isEmpty. Operand 35371 states and 43225 transitions. [2023-04-01 23:40:51,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2023-04-01 23:40:51,780 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:51,780 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:51,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 23:40:51,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:51,989 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:51,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:51,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1946101122, now seen corresponding path program 1 times [2023-04-01 23:40:51,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:51,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48008567] [2023-04-01 23:40:51,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:52,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:52,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:52,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:52,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:52,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-04-01 23:40:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:53,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2023-04-01 23:40:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:53,155 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 266 proven. 58 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 23:40:53,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:53,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48008567] [2023-04-01 23:40:53,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48008567] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:53,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10164979] [2023-04-01 23:40:53,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:53,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:53,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:53,157 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:53,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 23:40:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:53,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:40:53,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 321 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-04-01 23:40:53,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:40:55,171 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 321 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-04-01 23:40:55,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10164979] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:40:55,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:40:55,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-04-01 23:40:55,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202291236] [2023-04-01 23:40:55,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:40:55,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 23:40:55,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:55,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 23:40:55,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:40:55,174 INFO L87 Difference]: Start difference. First operand 35371 states and 43225 transitions. Second operand has 14 states, 14 states have (on average 50.357142857142854) internal successors, (705), 12 states have internal predecessors, (705), 7 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 23:41:10,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:41:10,337 INFO L93 Difference]: Finished difference Result 131604 states and 173420 transitions. [2023-04-01 23:41:10,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-04-01 23:41:10,338 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 50.357142857142854) internal successors, (705), 12 states have internal predecessors, (705), 7 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) Word has length 536 [2023-04-01 23:41:10,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:41:10,591 INFO L225 Difference]: With dead ends: 131604 [2023-04-01 23:41:10,591 INFO L226 Difference]: Without dead ends: 96239 [2023-04-01 23:41:10,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1198 GetRequests, 1130 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1498 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=736, Invalid=3956, Unknown=0, NotChecked=0, Total=4692 [2023-04-01 23:41:10,638 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 13940 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 21543 mSolverCounterSat, 4437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13945 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 25980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4437 IncrementalHoareTripleChecker+Valid, 21543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:41:10,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13945 Valid, 548 Invalid, 25980 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4437 Valid, 21543 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2023-04-01 23:41:10,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96239 states. [2023-04-01 23:41:12,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96239 to 89787. [2023-04-01 23:41:12,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89787 states, 88222 states have (on average 1.119051937158532) internal successors, (98725), 88626 states have internal predecessors, (98725), 377 states have call successors, (377), 377 states have call predecessors, (377), 1187 states have return successors, (12918), 783 states have call predecessors, (12918), 376 states have call successors, (12918) [2023-04-01 23:41:12,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89787 states to 89787 states and 112020 transitions. [2023-04-01 23:41:12,502 INFO L78 Accepts]: Start accepts. Automaton has 89787 states and 112020 transitions. Word has length 536 [2023-04-01 23:41:12,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:41:12,503 INFO L495 AbstractCegarLoop]: Abstraction has 89787 states and 112020 transitions. [2023-04-01 23:41:12,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 50.357142857142854) internal successors, (705), 12 states have internal predecessors, (705), 7 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 23:41:12,503 INFO L276 IsEmpty]: Start isEmpty. Operand 89787 states and 112020 transitions. [2023-04-01 23:41:12,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2023-04-01 23:41:12,513 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:41:12,513 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:41:12,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 23:41:12,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:12,720 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:41:12,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:41:12,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1001974903, now seen corresponding path program 1 times [2023-04-01 23:41:12,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:41:12,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651806394] [2023-04-01 23:41:12,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:12,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:41:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:13,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:41:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:13,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:41:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:14,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:14,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-04-01 23:41:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:14,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2023-04-01 23:41:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:14,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2023-04-01 23:41:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:14,323 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 451 proven. 118 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-04-01 23:41:14,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:41:14,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651806394] [2023-04-01 23:41:14,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651806394] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:41:14,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984508503] [2023-04-01 23:41:14,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:14,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:14,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:41:14,325 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:41:14,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 23:41:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:14,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:41:14,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:41:14,776 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 614 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-04-01 23:41:14,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:41:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 392 proven. 102 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-04-01 23:41:16,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984508503] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:41:16,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:41:16,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 16 [2023-04-01 23:41:16,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552760067] [2023-04-01 23:41:16,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:41:16,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 23:41:16,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:41:16,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 23:41:16,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:41:16,972 INFO L87 Difference]: Start difference. First operand 89787 states and 112020 transitions. Second operand has 16 states, 16 states have (on average 50.3125) internal successors, (805), 14 states have internal predecessors, (805), 8 states have call successors, (15), 7 states have call predecessors, (15), 9 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2023-04-01 23:41:34,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:41:34,634 INFO L93 Difference]: Finished difference Result 229995 states and 293412 transitions. [2023-04-01 23:41:34,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-04-01 23:41:34,635 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 50.3125) internal successors, (805), 14 states have internal predecessors, (805), 8 states have call successors, (15), 7 states have call predecessors, (15), 9 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) Word has length 652 [2023-04-01 23:41:34,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:41:35,220 INFO L225 Difference]: With dead ends: 229995 [2023-04-01 23:41:35,221 INFO L226 Difference]: Without dead ends: 140214 [2023-04-01 23:41:35,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1459 GetRequests, 1375 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2465 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1059, Invalid=6081, Unknown=0, NotChecked=0, Total=7140 [2023-04-01 23:41:35,305 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 25100 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 20899 mSolverCounterSat, 6188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25101 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 27087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6188 IncrementalHoareTripleChecker+Valid, 20899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:41:35,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25101 Valid, 547 Invalid, 27087 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6188 Valid, 20899 Invalid, 0 Unknown, 0 Unchecked, 14.5s Time] [2023-04-01 23:41:35,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140214 states. [2023-04-01 23:41:37,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140214 to 138586. [2023-04-01 23:41:37,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138586 states, 136185 states have (on average 1.1004956493005837) internal successors, (149871), 136810 states have internal predecessors, (149871), 581 states have call successors, (581), 581 states have call predecessors, (581), 1819 states have return successors, (17225), 1194 states have call predecessors, (17225), 580 states have call successors, (17225) [2023-04-01 23:41:37,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138586 states to 138586 states and 167677 transitions. [2023-04-01 23:41:37,969 INFO L78 Accepts]: Start accepts. Automaton has 138586 states and 167677 transitions. Word has length 652 [2023-04-01 23:41:37,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:41:37,970 INFO L495 AbstractCegarLoop]: Abstraction has 138586 states and 167677 transitions. [2023-04-01 23:41:37,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 50.3125) internal successors, (805), 14 states have internal predecessors, (805), 8 states have call successors, (15), 7 states have call predecessors, (15), 9 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2023-04-01 23:41:37,970 INFO L276 IsEmpty]: Start isEmpty. Operand 138586 states and 167677 transitions. [2023-04-01 23:41:37,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2023-04-01 23:41:37,995 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:41:37,996 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:41:38,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 23:41:38,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:38,201 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:41:38,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:41:38,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1395294417, now seen corresponding path program 1 times [2023-04-01 23:41:38,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:41:38,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581553826] [2023-04-01 23:41:38,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:38,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:41:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:38,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:41:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:38,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:41:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:38,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:38,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-04-01 23:41:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:38,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2023-04-01 23:41:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:38,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2023-04-01 23:41:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:38,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2023-04-01 23:41:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:38,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 618 proven. 69 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2023-04-01 23:41:38,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:41:38,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581553826] [2023-04-01 23:41:38,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581553826] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:41:38,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906143756] [2023-04-01 23:41:38,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:38,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:38,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:41:38,789 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:41:38,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 23:41:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:38,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:41:38,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:41:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 839 proven. 2 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2023-04-01 23:41:39,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:41:39,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 621 proven. 70 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-04-01 23:41:39,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906143756] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:41:39,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:41:39,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:41:39,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006184975] [2023-04-01 23:41:39,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:41:39,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:41:39,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:41:39,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:41:39,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:41:39,367 INFO L87 Difference]: Start difference. First operand 138586 states and 167677 transitions. Second operand has 12 states, 12 states have (on average 61.666666666666664) internal successors, (740), 10 states have internal predecessors, (740), 5 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 23:41:48,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:41:48,264 INFO L93 Difference]: Finished difference Result 344720 states and 426575 transitions. [2023-04-01 23:41:48,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 23:41:48,265 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 61.666666666666664) internal successors, (740), 10 states have internal predecessors, (740), 5 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 817 [2023-04-01 23:41:48,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:41:48,956 INFO L225 Difference]: With dead ends: 344720 [2023-04-01 23:41:48,957 INFO L226 Difference]: Without dead ends: 183836 [2023-04-01 23:41:49,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1680 GetRequests, 1655 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:41:49,139 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 3032 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 13488 mSolverCounterSat, 1628 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3038 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 15116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1628 IncrementalHoareTripleChecker+Valid, 13488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:41:49,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3038 Valid, 256 Invalid, 15116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1628 Valid, 13488 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-04-01 23:41:49,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183836 states. [2023-04-01 23:41:51,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183836 to 171671. [2023-04-01 23:41:51,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171671 states, 169209 states have (on average 1.0548670578988115) internal successors, (178493), 169764 states have internal predecessors, (178493), 725 states have call successors, (725), 725 states have call predecessors, (725), 1736 states have return successors, (16012), 1181 states have call predecessors, (16012), 724 states have call successors, (16012) [2023-04-01 23:41:52,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171671 states to 171671 states and 195230 transitions. [2023-04-01 23:41:52,224 INFO L78 Accepts]: Start accepts. Automaton has 171671 states and 195230 transitions. Word has length 817 [2023-04-01 23:41:52,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:41:52,225 INFO L495 AbstractCegarLoop]: Abstraction has 171671 states and 195230 transitions. [2023-04-01 23:41:52,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 61.666666666666664) internal successors, (740), 10 states have internal predecessors, (740), 5 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 23:41:52,225 INFO L276 IsEmpty]: Start isEmpty. Operand 171671 states and 195230 transitions. [2023-04-01 23:41:52,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2023-04-01 23:41:52,239 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:41:52,240 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:41:52,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 23:41:52,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:52,446 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:41:52,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:41:52,447 INFO L85 PathProgramCache]: Analyzing trace with hash 465684793, now seen corresponding path program 1 times [2023-04-01 23:41:52,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:41:52,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544847764] [2023-04-01 23:41:52,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:52,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:41:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:53,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:41:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:53,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:41:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:53,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:53,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-04-01 23:41:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:53,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2023-04-01 23:41:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:53,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2023-04-01 23:41:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:53,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2023-04-01 23:41:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:53,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2023-04-01 23:41:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:53,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1537 backedges. 527 proven. 162 refuted. 0 times theorem prover too weak. 848 trivial. 0 not checked. [2023-04-01 23:41:53,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:41:53,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544847764] [2023-04-01 23:41:53,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544847764] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:41:53,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473836689] [2023-04-01 23:41:53,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:53,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:53,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:41:53,819 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:41:53,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 23:41:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:54,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 1223 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:41:54,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:41:54,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1537 backedges. 654 proven. 2 refuted. 0 times theorem prover too weak. 881 trivial. 0 not checked. [2023-04-01 23:41:54,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:41:54,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1537 backedges. 654 proven. 2 refuted. 0 times theorem prover too weak. 881 trivial. 0 not checked. [2023-04-01 23:41:54,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473836689] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:41:54,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:41:54,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2023-04-01 23:41:54,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516654349] [2023-04-01 23:41:54,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:41:54,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 23:41:54,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:41:54,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 23:41:54,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:41:54,271 INFO L87 Difference]: Start difference. First operand 171671 states and 195230 transitions. Second operand has 13 states, 13 states have (on average 44.69230769230769) internal successors, (581), 11 states have internal predecessors, (581), 6 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-04-01 23:42:06,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:42:06,956 INFO L93 Difference]: Finished difference Result 369382 states and 431865 transitions. [2023-04-01 23:42:06,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-04-01 23:42:06,956 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 44.69230769230769) internal successors, (581), 11 states have internal predecessors, (581), 6 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 834 [2023-04-01 23:42:06,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:42:07,615 INFO L225 Difference]: With dead ends: 369382 [2023-04-01 23:42:07,615 INFO L226 Difference]: Without dead ends: 197717 [2023-04-01 23:42:07,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1783 GetRequests, 1724 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=564, Invalid=2858, Unknown=0, NotChecked=0, Total=3422 [2023-04-01 23:42:07,740 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 9227 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 21819 mSolverCounterSat, 1513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9233 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 23332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1513 IncrementalHoareTripleChecker+Valid, 21819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:42:07,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9233 Valid, 587 Invalid, 23332 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1513 Valid, 21819 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-04-01 23:42:07,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197717 states. [2023-04-01 23:42:10,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197717 to 183957. [2023-04-01 23:42:10,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183957 states, 181244 states have (on average 1.0467822383085785) internal successors, (189723), 181894 states have internal predecessors, (189723), 776 states have call successors, (776), 776 states have call predecessors, (776), 1936 states have return successors, (15116), 1286 states have call predecessors, (15116), 775 states have call successors, (15116) [2023-04-01 23:42:11,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183957 states to 183957 states and 205615 transitions. [2023-04-01 23:42:11,067 INFO L78 Accepts]: Start accepts. Automaton has 183957 states and 205615 transitions. Word has length 834 [2023-04-01 23:42:11,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:42:11,068 INFO L495 AbstractCegarLoop]: Abstraction has 183957 states and 205615 transitions. [2023-04-01 23:42:11,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 44.69230769230769) internal successors, (581), 11 states have internal predecessors, (581), 6 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-04-01 23:42:11,068 INFO L276 IsEmpty]: Start isEmpty. Operand 183957 states and 205615 transitions. [2023-04-01 23:42:11,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2023-04-01 23:42:11,106 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:42:11,107 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:42:11,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 23:42:11,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:42:11,321 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:42:11,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:42:11,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1684637413, now seen corresponding path program 1 times [2023-04-01 23:42:11,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:42:11,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723261709] [2023-04-01 23:42:11,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:42:11,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:42:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:11,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:42:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:11,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:42:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:11,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:11,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-04-01 23:42:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:11,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2023-04-01 23:42:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:11,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2023-04-01 23:42:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:11,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 801 [2023-04-01 23:42:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1398 backedges. 528 proven. 2 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2023-04-01 23:42:11,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:42:11,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723261709] [2023-04-01 23:42:11,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723261709] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:42:11,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317141248] [2023-04-01 23:42:11,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:42:11,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:42:11,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:42:11,904 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:42:11,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 23:42:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:12,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:42:12,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:42:12,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1398 backedges. 532 proven. 2 refuted. 0 times theorem prover too weak. 864 trivial. 0 not checked. [2023-04-01 23:42:12,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:42:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1398 backedges. 532 proven. 2 refuted. 0 times theorem prover too weak. 864 trivial. 0 not checked. [2023-04-01 23:42:12,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317141248] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:42:12,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:42:12,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:42:12,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54326459] [2023-04-01 23:42:12,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:42:12,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:42:12,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:42:12,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:42:12,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:42:12,463 INFO L87 Difference]: Start difference. First operand 183957 states and 205615 transitions. Second operand has 11 states, 11 states have (on average 51.36363636363637) internal successors, (565), 9 states have internal predecessors, (565), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 23:42:18,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:42:18,762 INFO L93 Difference]: Finished difference Result 359461 states and 401487 transitions. [2023-04-01 23:42:18,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 23:42:18,763 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 51.36363636363637) internal successors, (565), 9 states have internal predecessors, (565), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 919 [2023-04-01 23:42:18,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:42:19,370 INFO L225 Difference]: With dead ends: 359461 [2023-04-01 23:42:19,371 INFO L226 Difference]: Without dead ends: 175510 [2023-04-01 23:42:19,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1875 GetRequests, 1854 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 23:42:19,492 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 3190 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 10192 mSolverCounterSat, 705 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3195 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 10897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 705 IncrementalHoareTripleChecker+Valid, 10192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:42:19,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3195 Valid, 159 Invalid, 10897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [705 Valid, 10192 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-04-01 23:42:19,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175510 states. [2023-04-01 23:42:21,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175510 to 148577. [2023-04-01 23:42:21,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148577 states, 146276 states have (on average 1.0292392463562035) internal successors, (150553), 146870 states have internal predecessors, (150553), 626 states have call successors, (626), 626 states have call predecessors, (626), 1674 states have return successors, (7506), 1080 states have call predecessors, (7506), 625 states have call successors, (7506) [2023-04-01 23:42:22,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148577 states to 148577 states and 158685 transitions. [2023-04-01 23:42:22,202 INFO L78 Accepts]: Start accepts. Automaton has 148577 states and 158685 transitions. Word has length 919 [2023-04-01 23:42:22,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:42:22,203 INFO L495 AbstractCegarLoop]: Abstraction has 148577 states and 158685 transitions. [2023-04-01 23:42:22,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 51.36363636363637) internal successors, (565), 9 states have internal predecessors, (565), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 23:42:22,203 INFO L276 IsEmpty]: Start isEmpty. Operand 148577 states and 158685 transitions. [2023-04-01 23:42:22,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 937 [2023-04-01 23:42:22,219 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:42:22,219 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:42:22,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-04-01 23:42:22,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-01 23:42:22,425 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:42:22,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:42:22,425 INFO L85 PathProgramCache]: Analyzing trace with hash 340119688, now seen corresponding path program 1 times [2023-04-01 23:42:22,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:42:22,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094951240] [2023-04-01 23:42:22,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:42:22,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:42:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:23,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:42:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:23,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:42:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:23,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:23,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-04-01 23:42:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:23,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2023-04-01 23:42:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:23,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2023-04-01 23:42:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:24,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 801 [2023-04-01 23:42:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:24,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1466 backedges. 736 proven. 108 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2023-04-01 23:42:24,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:42:24,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094951240] [2023-04-01 23:42:24,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094951240] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:42:24,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008588268] [2023-04-01 23:42:24,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:42:24,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:42:24,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:42:24,182 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:42:24,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 23:42:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:24,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 1278 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:42:24,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:42:24,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1466 backedges. 618 proven. 0 refuted. 0 times theorem prover too weak. 848 trivial. 0 not checked. [2023-04-01 23:42:24,749 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:42:24,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008588268] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:42:24,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:42:24,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-04-01 23:42:24,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266340865] [2023-04-01 23:42:24,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:42:24,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:42:24,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:42:24,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:42:24,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:42:24,751 INFO L87 Difference]: Start difference. First operand 148577 states and 158685 transitions. Second operand has 5 states, 5 states have (on average 105.8) internal successors, (529), 4 states have internal predecessors, (529), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 23:42:28,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:42:28,259 INFO L93 Difference]: Finished difference Result 320341 states and 342782 transitions. [2023-04-01 23:42:28,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:42:28,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 105.8) internal successors, (529), 4 states have internal predecessors, (529), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 936 [2023-04-01 23:42:28,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:42:28,669 INFO L225 Difference]: With dead ends: 320341 [2023-04-01 23:42:28,669 INFO L226 Difference]: Without dead ends: 171770 [2023-04-01 23:42:28,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 962 GetRequests, 948 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:42:28,954 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 1547 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 3211 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 3904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 3211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:42:28,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 115 Invalid, 3904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 3211 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-01 23:42:29,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171770 states. [2023-04-01 23:42:31,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171770 to 160495. [2023-04-01 23:42:31,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160495 states, 158097 states have (on average 1.0259524216145783) internal successors, (162200), 158692 states have internal predecessors, (162200), 677 states have call successors, (677), 677 states have call predecessors, (677), 1720 states have return successors, (7470), 1125 states have call predecessors, (7470), 676 states have call successors, (7470) [2023-04-01 23:42:31,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160495 states to 160495 states and 170347 transitions. [2023-04-01 23:42:31,397 INFO L78 Accepts]: Start accepts. Automaton has 160495 states and 170347 transitions. Word has length 936 [2023-04-01 23:42:31,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:42:31,398 INFO L495 AbstractCegarLoop]: Abstraction has 160495 states and 170347 transitions. [2023-04-01 23:42:31,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.8) internal successors, (529), 4 states have internal predecessors, (529), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 23:42:31,398 INFO L276 IsEmpty]: Start isEmpty. Operand 160495 states and 170347 transitions. [2023-04-01 23:42:31,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1464 [2023-04-01 23:42:31,420 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:42:31,420 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:42:31,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 23:42:31,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:42:31,621 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:42:31,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:42:31,622 INFO L85 PathProgramCache]: Analyzing trace with hash 703850690, now seen corresponding path program 1 times [2023-04-01 23:42:31,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:42:31,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971834486] [2023-04-01 23:42:31,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:42:31,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:42:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:34,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:42:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:34,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:42:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:34,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:34,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:42:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:34,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:42:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:34,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:34,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:42:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:34,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:42:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:34,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1107 [2023-04-01 23:42:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:34,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1328 [2023-04-01 23:42:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:34,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2395 backedges. 1016 proven. 124 refuted. 0 times theorem prover too weak. 1255 trivial. 0 not checked. [2023-04-01 23:42:34,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:42:34,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971834486] [2023-04-01 23:42:34,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971834486] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:42:34,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57282211] [2023-04-01 23:42:34,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:42:34,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:42:34,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:42:34,662 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:42:34,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 23:42:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:34,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 1884 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:42:34,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:42:35,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2395 backedges. 1619 proven. 2 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2023-04-01 23:42:35,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:42:36,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2395 backedges. 688 proven. 207 refuted. 0 times theorem prover too weak. 1500 trivial. 0 not checked. [2023-04-01 23:42:36,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57282211] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:42:36,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:42:36,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 16 [2023-04-01 23:42:36,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403244883] [2023-04-01 23:42:36,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:42:36,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 23:42:36,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:42:36,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 23:42:36,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:42:36,825 INFO L87 Difference]: Start difference. First operand 160495 states and 170347 transitions. Second operand has 16 states, 16 states have (on average 77.375) internal successors, (1238), 14 states have internal predecessors, (1238), 8 states have call successors, (19), 7 states have call predecessors, (19), 10 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2023-04-01 23:42:57,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:42:57,234 INFO L93 Difference]: Finished difference Result 332260 states and 353179 transitions. [2023-04-01 23:42:57,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2023-04-01 23:42:57,235 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 77.375) internal successors, (1238), 14 states have internal predecessors, (1238), 8 states have call successors, (19), 7 states have call predecessors, (19), 10 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) Word has length 1463 [2023-04-01 23:42:57,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:42:57,837 INFO L225 Difference]: With dead ends: 332260 [2023-04-01 23:42:57,837 INFO L226 Difference]: Without dead ends: 171761 [2023-04-01 23:42:57,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3142 GetRequests, 3034 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4347 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1415, Invalid=10357, Unknown=0, NotChecked=0, Total=11772 [2023-04-01 23:42:57,932 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 16944 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 28769 mSolverCounterSat, 2125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16944 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 30894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2125 IncrementalHoareTripleChecker+Valid, 28769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:42:57,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16944 Valid, 983 Invalid, 30894 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2125 Valid, 28769 Invalid, 0 Unknown, 0 Unchecked, 15.9s Time] [2023-04-01 23:42:58,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171761 states. [2023-04-01 23:42:59,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171761 to 156934. [2023-04-01 23:42:59,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156934 states, 154588 states have (on average 1.0242450901751754) internal successors, (158336), 155168 states have internal predecessors, (158336), 662 states have call successors, (662), 662 states have call predecessors, (662), 1683 states have return successors, (6912), 1103 states have call predecessors, (6912), 661 states have call successors, (6912) [2023-04-01 23:43:00,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156934 states to 156934 states and 165910 transitions. [2023-04-01 23:43:00,330 INFO L78 Accepts]: Start accepts. Automaton has 156934 states and 165910 transitions. Word has length 1463 [2023-04-01 23:43:00,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:43:00,331 INFO L495 AbstractCegarLoop]: Abstraction has 156934 states and 165910 transitions. [2023-04-01 23:43:00,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 77.375) internal successors, (1238), 14 states have internal predecessors, (1238), 8 states have call successors, (19), 7 states have call predecessors, (19), 10 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2023-04-01 23:43:00,331 INFO L276 IsEmpty]: Start isEmpty. Operand 156934 states and 165910 transitions. [2023-04-01 23:43:00,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1496 [2023-04-01 23:43:00,352 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:43:00,352 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:43:00,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 23:43:00,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 23:43:00,559 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:43:00,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:43:00,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1417310010, now seen corresponding path program 1 times [2023-04-01 23:43:00,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:43:00,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066476389] [2023-04-01 23:43:00,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:00,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:43:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:03,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:43:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:03,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:43:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:03,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:43:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:03,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:43:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:03,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:43:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:03,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:43:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:03,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:43:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:03,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:43:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:04,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:43:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:04,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1345 [2023-04-01 23:43:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2056 backedges. 1226 proven. 240 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-04-01 23:43:04,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:43:04,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066476389] [2023-04-01 23:43:04,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066476389] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:43:04,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56081457] [2023-04-01 23:43:04,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:04,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:43:04,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:43:04,829 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:43:04,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 23:43:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:05,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 1901 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-01 23:43:05,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:43:05,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2056 backedges. 1267 proven. 202 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2023-04-01 23:43:05,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:43:07,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2056 backedges. 1367 proven. 102 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2023-04-01 23:43:07,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56081457] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:43:07,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:43:07,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 24 [2023-04-01 23:43:07,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499008609] [2023-04-01 23:43:07,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:43:07,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-01 23:43:07,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:43:07,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-01 23:43:07,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2023-04-01 23:43:07,080 INFO L87 Difference]: Start difference. First operand 156934 states and 165910 transitions. Second operand has 24 states, 24 states have (on average 79.91666666666667) internal successors, (1918), 22 states have internal predecessors, (1918), 13 states have call successors, (22), 10 states have call predecessors, (22), 11 states have return successors, (20), 13 states have call predecessors, (20), 11 states have call successors, (20) [2023-04-01 23:43:35,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:43:35,795 INFO L93 Difference]: Finished difference Result 357925 states and 379908 transitions. [2023-04-01 23:43:35,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2023-04-01 23:43:35,796 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 79.91666666666667) internal successors, (1918), 22 states have internal predecessors, (1918), 13 states have call successors, (22), 10 states have call predecessors, (22), 11 states have return successors, (20), 13 states have call predecessors, (20), 11 states have call successors, (20) Word has length 1495 [2023-04-01 23:43:35,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:43:36,283 INFO L225 Difference]: With dead ends: 357925 [2023-04-01 23:43:36,284 INFO L226 Difference]: Without dead ends: 199252 [2023-04-01 23:43:36,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3253 GetRequests, 3091 SyntacticMatches, 1 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10496 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5301, Invalid=21105, Unknown=0, NotChecked=0, Total=26406 [2023-04-01 23:43:36,641 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 25154 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 34830 mSolverCounterSat, 5565 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25154 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 40395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5565 IncrementalHoareTripleChecker+Valid, 34830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:43:36,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25154 Valid, 760 Invalid, 40395 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5565 Valid, 34830 Invalid, 0 Unknown, 0 Unchecked, 21.3s Time] [2023-04-01 23:43:36,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199252 states. [2023-04-01 23:43:39,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199252 to 190756. [2023-04-01 23:43:39,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190756 states, 188066 states have (on average 1.0230397839056502) internal successors, (192399), 188688 states have internal predecessors, (192399), 806 states have call successors, (806), 806 states have call predecessors, (806), 1883 states have return successors, (8249), 1261 states have call predecessors, (8249), 805 states have call successors, (8249) [2023-04-01 23:43:39,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190756 states to 190756 states and 201454 transitions. [2023-04-01 23:43:39,695 INFO L78 Accepts]: Start accepts. Automaton has 190756 states and 201454 transitions. Word has length 1495 [2023-04-01 23:43:39,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:43:39,695 INFO L495 AbstractCegarLoop]: Abstraction has 190756 states and 201454 transitions. [2023-04-01 23:43:39,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 79.91666666666667) internal successors, (1918), 22 states have internal predecessors, (1918), 13 states have call successors, (22), 10 states have call predecessors, (22), 11 states have return successors, (20), 13 states have call predecessors, (20), 11 states have call successors, (20) [2023-04-01 23:43:39,696 INFO L276 IsEmpty]: Start isEmpty. Operand 190756 states and 201454 transitions. [2023-04-01 23:43:39,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1704 [2023-04-01 23:43:39,725 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:43:39,726 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:43:39,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-01 23:43:39,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-01 23:43:39,933 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:43:39,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:43:39,933 INFO L85 PathProgramCache]: Analyzing trace with hash -680618208, now seen corresponding path program 1 times [2023-04-01 23:43:39,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:43:39,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898226561] [2023-04-01 23:43:39,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:39,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:43:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:40,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:43:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:40,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:43:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:40,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:43:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:40,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:43:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:40,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:43:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:40,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:43:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:40,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:43:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:40,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:43:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:40,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2023-04-01 23:43:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:40,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:43:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:41,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1461 [2023-04-01 23:43:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:41,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2982 backedges. 303 proven. 6 refuted. 0 times theorem prover too weak. 2673 trivial. 0 not checked. [2023-04-01 23:43:41,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:43:41,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898226561] [2023-04-01 23:43:41,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898226561] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:43:41,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568862526] [2023-04-01 23:43:41,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:43:41,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:43:41,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:43:41,054 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:43:41,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-01 23:43:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:43:41,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 2152 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:43:41,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:43:41,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2982 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 2673 trivial. 0 not checked. [2023-04-01 23:43:41,505 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:43:41,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568862526] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:43:41,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:43:41,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:43:41,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512110427] [2023-04-01 23:43:41,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:43:41,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:43:41,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:43:41,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:43:41,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:43:41,508 INFO L87 Difference]: Start difference. First operand 190756 states and 201454 transitions. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-01 23:43:44,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:43:44,415 INFO L93 Difference]: Finished difference Result 375827 states and 396934 transitions. [2023-04-01 23:43:44,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:43:44,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 1703 [2023-04-01 23:43:44,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:43:44,419 INFO L225 Difference]: With dead ends: 375827 [2023-04-01 23:43:44,419 INFO L226 Difference]: Without dead ends: 0