/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/Problem05_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 21:01:20,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 21:01:20,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 21:01:20,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 21:01:20,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 21:01:20,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 21:01:20,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 21:01:20,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 21:01:20,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 21:01:20,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 21:01:20,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 21:01:20,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 21:01:20,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 21:01:20,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 21:01:20,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 21:01:20,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 21:01:20,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 21:01:20,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 21:01:20,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 21:01:20,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 21:01:20,137 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 21:01:20,167 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 21:01:20,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 21:01:20,167 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 21:01:20,167 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 21:01:20,168 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 21:01:20,168 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 21:01:20,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 21:01:20,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 21:01:20,169 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 21:01:20,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 21:01:20,169 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 21:01:20,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 21:01:20,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 21:01:20,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 21:01:20,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 21:01:20,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 21:01:20,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 21:01:20,170 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 21:01:20,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 21:01:20,170 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 21:01:20,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 21:01:20,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 21:01:20,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 21:01:20,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 21:01:20,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 21:01:20,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 21:01:20,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 21:01:20,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 21:01:20,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 21:01:20,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 21:01:20,171 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 21:01:20,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 21:01:20,171 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 21:01:20,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 21:01:20,172 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 21:01:20,172 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 21:01:20,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 21:01:20,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 21:01:20,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 21:01:20,438 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 21:01:20,438 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 21:01:20,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem05_label47.c [2023-04-01 21:01:21,590 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 21:01:22,208 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 21:01:22,208 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label47.c [2023-04-01 21:01:22,264 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37c5a0f0b/53de9fcec8c94ec5a8a60320e5e3a64e/FLAG3fb68080f [2023-04-01 21:01:22,278 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37c5a0f0b/53de9fcec8c94ec5a8a60320e5e3a64e [2023-04-01 21:01:22,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 21:01:22,281 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 21:01:22,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 21:01:22,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 21:01:22,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 21:01:22,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 09:01:22" (1/1) ... [2023-04-01 21:01:22,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176450a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:22, skipping insertion in model container [2023-04-01 21:01:22,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 09:01:22" (1/1) ... [2023-04-01 21:01:22,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 21:01:22,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 21:01:24,011 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/Problem05_label47.c[377269,377282] [2023-04-01 21:01:24,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 21:01:24,040 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 21:01:24,840 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/Problem05_label47.c[377269,377282] [2023-04-01 21:01:24,847 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 21:01:24,894 INFO L208 MainTranslator]: Completed translation [2023-04-01 21:01:24,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:24 WrapperNode [2023-04-01 21:01:24,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 21:01:24,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 21:01:24,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 21:01:24,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 21:01:24,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:24" (1/1) ... [2023-04-01 21:01:24,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:24" (1/1) ... [2023-04-01 21:01:24,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:24" (1/1) ... [2023-04-01 21:01:24,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:24" (1/1) ... [2023-04-01 21:01:25,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:24" (1/1) ... [2023-04-01 21:01:25,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:24" (1/1) ... [2023-04-01 21:01:25,280 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:24" (1/1) ... [2023-04-01 21:01:25,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:24" (1/1) ... [2023-04-01 21:01:25,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 21:01:25,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 21:01:25,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 21:01:25,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 21:01:25,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:24" (1/1) ... [2023-04-01 21:01:25,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 21:01:25,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:01:25,443 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 21:01:25,467 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 21:01:25,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 21:01:25,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 21:01:25,483 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 21:01:25,484 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 21:01:25,484 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 21:01:25,484 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 21:01:25,484 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 21:01:25,484 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-01 21:01:25,484 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-04-01 21:01:25,484 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2023-04-01 21:01:25,484 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2023-04-01 21:01:25,484 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 21:01:25,484 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 21:01:25,484 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 21:01:25,484 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 21:01:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 21:01:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-01 21:01:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-04-01 21:01:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2023-04-01 21:01:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2023-04-01 21:01:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 21:01:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 21:01:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 21:01:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 21:01:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 21:01:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 21:01:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 21:01:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 21:01:25,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 21:01:25,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 21:01:25,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 21:01:25,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 21:01:25,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 21:01:25,578 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 21:01:25,580 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 21:01:31,958 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 21:01:31,975 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 21:01:31,975 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 21:01:31,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 09:01:31 BoogieIcfgContainer [2023-04-01 21:01:31,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 21:01:31,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 21:01:31,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 21:01:31,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 21:01:31,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 09:01:22" (1/3) ... [2023-04-01 21:01:31,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781f6e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 09:01:31, skipping insertion in model container [2023-04-01 21:01:31,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:24" (2/3) ... [2023-04-01 21:01:31,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781f6e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 09:01:31, skipping insertion in model container [2023-04-01 21:01:31,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 09:01:31" (3/3) ... [2023-04-01 21:01:31,985 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label47.c [2023-04-01 21:01:32,001 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 21:01:32,001 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 21:01:32,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 21:01:32,071 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;@1c08ebf8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 21:01:32,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 21:01:32,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 2222 states, 2200 states have (on average 1.864090909090909) internal successors, (4101), 2201 states have internal predecessors, (4101), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-01 21:01:32,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1676 [2023-04-01 21:01:32,185 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:01:32,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:32,187 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:01:32,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:01:32,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1487495618, now seen corresponding path program 1 times [2023-04-01 21:01:32,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:01:32,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289917372] [2023-04-01 21:01:32,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:01:32,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:01:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:01:41,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:01:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:01:41,137 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 21:01:41,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:01:41,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289917372] [2023-04-01 21:01:41,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289917372] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:01:41,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 21:01:41,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 21:01:41,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670994752] [2023-04-01 21:01:41,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:01:41,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 21:01:41,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:01:41,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 21:01:41,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 21:01:41,201 INFO L87 Difference]: Start difference. First operand has 2222 states, 2200 states have (on average 1.864090909090909) internal successors, (4101), 2201 states have internal predecessors, (4101), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 5 states, 4 states have (on average 416.0) internal successors, (1664), 3 states have internal predecessors, (1664), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 21:01:56,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:01:56,035 INFO L93 Difference]: Finished difference Result 8116 states and 15409 transitions. [2023-04-01 21:01:56,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 21:01:56,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 416.0) internal successors, (1664), 3 states have internal predecessors, (1664), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 1675 [2023-04-01 21:01:56,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:01:56,096 INFO L225 Difference]: With dead ends: 8116 [2023-04-01 21:01:56,096 INFO L226 Difference]: Without dead ends: 5826 [2023-04-01 21:01:56,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 21:01:56,114 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 9435 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 9984 mSolverCounterSat, 7419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9435 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 17403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7419 IncrementalHoareTripleChecker+Valid, 9984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2023-04-01 21:01:56,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9435 Valid, 464 Invalid, 17403 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7419 Valid, 9984 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2023-04-01 21:01:56,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5826 states. [2023-04-01 21:01:56,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5826 to 5780. [2023-04-01 21:01:56,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5780 states, 5710 states have (on average 1.7427320490367775) internal successors, (9951), 5713 states have internal predecessors, (9951), 26 states have call successors, (26), 26 states have call predecessors, (26), 43 states have return successors, (91), 40 states have call predecessors, (91), 25 states have call successors, (91) [2023-04-01 21:01:56,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5780 states to 5780 states and 10068 transitions. [2023-04-01 21:01:56,347 INFO L78 Accepts]: Start accepts. Automaton has 5780 states and 10068 transitions. Word has length 1675 [2023-04-01 21:01:56,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:01:56,350 INFO L495 AbstractCegarLoop]: Abstraction has 5780 states and 10068 transitions. [2023-04-01 21:01:56,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 416.0) internal successors, (1664), 3 states have internal predecessors, (1664), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 21:01:56,351 INFO L276 IsEmpty]: Start isEmpty. Operand 5780 states and 10068 transitions. [2023-04-01 21:01:56,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1726 [2023-04-01 21:01:56,449 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:01:56,450 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:56,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 21:01:56,451 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:01:56,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:01:56,452 INFO L85 PathProgramCache]: Analyzing trace with hash -661627865, now seen corresponding path program 1 times [2023-04-01 21:01:56,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:01:56,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871582870] [2023-04-01 21:01:56,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:01:56,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:01:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:01:59,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:01:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:01:59,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:01:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:01:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:01:59,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:01:59,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871582870] [2023-04-01 21:01:59,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871582870] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:01:59,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 21:01:59,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 21:01:59,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773454605] [2023-04-01 21:01:59,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:01:59,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 21:01:59,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:01:59,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 21:01:59,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 21:01:59,239 INFO L87 Difference]: Start difference. First operand 5780 states and 10068 transitions. Second operand has 8 states, 7 states have (on average 244.57142857142858) internal successors, (1712), 5 states have internal predecessors, (1712), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 21:02:12,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:02:12,753 INFO L93 Difference]: Finished difference Result 15383 states and 26391 transitions. [2023-04-01 21:02:12,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 21:02:12,755 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 244.57142857142858) internal successors, (1712), 5 states have internal predecessors, (1712), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 1725 [2023-04-01 21:02:12,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:02:12,796 INFO L225 Difference]: With dead ends: 15383 [2023-04-01 21:02:12,796 INFO L226 Difference]: Without dead ends: 9609 [2023-04-01 21:02:12,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 21:02:12,815 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 10448 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 17407 mSolverCounterSat, 3257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10448 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 20664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3257 IncrementalHoareTripleChecker+Valid, 17407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2023-04-01 21:02:12,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10448 Valid, 1263 Invalid, 20664 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3257 Valid, 17407 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2023-04-01 21:02:12,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9609 states. [2023-04-01 21:02:13,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9609 to 9485. [2023-04-01 21:02:13,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9485 states, 9312 states have (on average 1.4669243986254294) internal successors, (13660), 9324 states have internal predecessors, (13660), 42 states have call successors, (42), 42 states have call predecessors, (42), 130 states have return successors, (326), 118 states have call predecessors, (326), 41 states have call successors, (326) [2023-04-01 21:02:13,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9485 states to 9485 states and 14028 transitions. [2023-04-01 21:02:13,060 INFO L78 Accepts]: Start accepts. Automaton has 9485 states and 14028 transitions. Word has length 1725 [2023-04-01 21:02:13,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:02:13,060 INFO L495 AbstractCegarLoop]: Abstraction has 9485 states and 14028 transitions. [2023-04-01 21:02:13,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 244.57142857142858) internal successors, (1712), 5 states have internal predecessors, (1712), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 21:02:13,061 INFO L276 IsEmpty]: Start isEmpty. Operand 9485 states and 14028 transitions. [2023-04-01 21:02:13,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1731 [2023-04-01 21:02:13,101 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:02:13,102 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, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:13,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 21:02:13,103 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:02:13,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:02:13,103 INFO L85 PathProgramCache]: Analyzing trace with hash -50165062, now seen corresponding path program 1 times [2023-04-01 21:02:13,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:02:13,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627566786] [2023-04-01 21:02:13,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:02:13,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:02:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:14,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:02:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:14,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:02:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:15,019 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:02:15,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:02:15,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627566786] [2023-04-01 21:02:15,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627566786] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:02:15,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 21:02:15,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 21:02:15,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138629856] [2023-04-01 21:02:15,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:02:15,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 21:02:15,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:02:15,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 21:02:15,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 21:02:15,026 INFO L87 Difference]: Start difference. First operand 9485 states and 14028 transitions. Second operand has 8 states, 7 states have (on average 245.28571428571428) internal successors, (1717), 5 states have internal predecessors, (1717), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 21:02:29,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:02:29,125 INFO L93 Difference]: Finished difference Result 38102 states and 59640 transitions. [2023-04-01 21:02:29,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 21:02:29,141 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 245.28571428571428) internal successors, (1717), 5 states have internal predecessors, (1717), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 1730 [2023-04-01 21:02:29,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:02:29,254 INFO L225 Difference]: With dead ends: 38102 [2023-04-01 21:02:29,255 INFO L226 Difference]: Without dead ends: 28623 [2023-04-01 21:02:29,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 21:02:29,293 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 18321 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 16930 mSolverCounterSat, 4393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18321 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 21323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4393 IncrementalHoareTripleChecker+Valid, 16930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2023-04-01 21:02:29,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18321 Valid, 1394 Invalid, 21323 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4393 Valid, 16930 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2023-04-01 21:02:29,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28623 states. [2023-04-01 21:02:29,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28623 to 28443. [2023-04-01 21:02:29,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28443 states, 27532 states have (on average 1.3228606712189452) internal successors, (36421), 27632 states have internal predecessors, (36421), 122 states have call successors, (122), 122 states have call predecessors, (122), 788 states have return successors, (4027), 688 states have call predecessors, (4027), 121 states have call successors, (4027) [2023-04-01 21:02:30,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28443 states to 28443 states and 40570 transitions. [2023-04-01 21:02:30,007 INFO L78 Accepts]: Start accepts. Automaton has 28443 states and 40570 transitions. Word has length 1730 [2023-04-01 21:02:30,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:02:30,008 INFO L495 AbstractCegarLoop]: Abstraction has 28443 states and 40570 transitions. [2023-04-01 21:02:30,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 245.28571428571428) internal successors, (1717), 5 states have internal predecessors, (1717), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 21:02:30,009 INFO L276 IsEmpty]: Start isEmpty. Operand 28443 states and 40570 transitions. [2023-04-01 21:02:30,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1735 [2023-04-01 21:02:30,112 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:02:30,114 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:30,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 21:02:30,114 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:02:30,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:02:30,115 INFO L85 PathProgramCache]: Analyzing trace with hash -842534960, now seen corresponding path program 1 times [2023-04-01 21:02:30,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:02:30,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527614845] [2023-04-01 21:02:30,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:02:30,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:02:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:32,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:02:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:32,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:02:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:32,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-04-01 21:02:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 53 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 21:02:32,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:02:32,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527614845] [2023-04-01 21:02:32,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527614845] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:02:32,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173449596] [2023-04-01 21:02:32,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:02:32,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:02:32,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:02:32,122 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 21:02:32,126 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 21:02:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:32,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 2214 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 21:02:32,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:02:32,846 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-04-01 21:02:32,846 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:02:32,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173449596] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:02:32,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:02:32,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 21:02:32,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403415419] [2023-04-01 21:02:32,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:02:32,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 21:02:32,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:02:32,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 21:02:32,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 21:02:32,854 INFO L87 Difference]: Start difference. First operand 28443 states and 40570 transitions. Second operand has 5 states, 5 states have (on average 334.6) internal successors, (1673), 4 states have internal predecessors, (1673), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 21:02:41,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:02:41,649 INFO L93 Difference]: Finished difference Result 86410 states and 136761 transitions. [2023-04-01 21:02:41,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 21:02:41,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 334.6) internal successors, (1673), 4 states have internal predecessors, (1673), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 1734 [2023-04-01 21:02:41,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:02:41,896 INFO L225 Difference]: With dead ends: 86410 [2023-04-01 21:02:41,896 INFO L226 Difference]: Without dead ends: 57973 [2023-04-01 21:02:41,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1746 GetRequests, 1734 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-04-01 21:02:41,971 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 5965 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 11036 mSolverCounterSat, 3576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5965 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 14612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3576 IncrementalHoareTripleChecker+Valid, 11036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-04-01 21:02:41,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5965 Valid, 1880 Invalid, 14612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3576 Valid, 11036 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-04-01 21:02:42,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57973 states. [2023-04-01 21:02:43,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57973 to 57299. [2023-04-01 21:02:43,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57299 states, 55115 states have (on average 1.2652998276331306) internal successors, (69737), 55420 states have internal predecessors, (69737), 242 states have call successors, (242), 242 states have call predecessors, (242), 1941 states have return successors, (15633), 1636 states have call predecessors, (15633), 241 states have call successors, (15633) [2023-04-01 21:02:43,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57299 states to 57299 states and 85612 transitions. [2023-04-01 21:02:43,555 INFO L78 Accepts]: Start accepts. Automaton has 57299 states and 85612 transitions. Word has length 1734 [2023-04-01 21:02:43,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:02:43,557 INFO L495 AbstractCegarLoop]: Abstraction has 57299 states and 85612 transitions. [2023-04-01 21:02:43,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 334.6) internal successors, (1673), 4 states have internal predecessors, (1673), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 21:02:43,562 INFO L276 IsEmpty]: Start isEmpty. Operand 57299 states and 85612 transitions. [2023-04-01 21:02:43,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1776 [2023-04-01 21:02:43,750 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:02:43,751 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:43,763 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 21:02:43,959 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 21:02:43,960 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:02:43,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:02:43,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1635247911, now seen corresponding path program 1 times [2023-04-01 21:02:43,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:02:43,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636219300] [2023-04-01 21:02:43,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:02:43,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:02:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:46,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:02:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:46,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:02:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:46,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-01 21:02:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:46,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-01 21:02:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:46,123 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 91 proven. 40 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-01 21:02:46,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:02:46,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636219300] [2023-04-01 21:02:46,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636219300] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:02:46,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314577924] [2023-04-01 21:02:46,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:02:46,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:02:46,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:02:46,126 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 21:02:46,128 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 21:02:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:46,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 2310 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 21:02:46,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:02:46,734 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-04-01 21:02:46,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 21:02:46,872 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 102 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-04-01 21:02:46,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314577924] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 21:02:46,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 21:02:46,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 21:02:46,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500042817] [2023-04-01 21:02:46,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 21:02:46,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 21:02:46,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:02:46,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 21:02:46,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-04-01 21:02:46,880 INFO L87 Difference]: Start difference. First operand 57299 states and 85612 transitions. Second operand has 12 states, 12 states have (on average 147.83333333333334) internal successors, (1774), 10 states have internal predecessors, (1774), 5 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 21:03:15,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:03:15,677 INFO L93 Difference]: Finished difference Result 244190 states and 447846 transitions. [2023-04-01 21:03:15,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-04-01 21:03:15,681 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 147.83333333333334) internal successors, (1774), 10 states have internal predecessors, (1774), 5 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 1775 [2023-04-01 21:03:15,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:03:17,228 INFO L225 Difference]: With dead ends: 244190 [2023-04-01 21:03:17,228 INFO L226 Difference]: Without dead ends: 186897 [2023-04-01 21:03:17,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3636 GetRequests, 3586 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=2083, Unknown=0, NotChecked=0, Total=2550 [2023-04-01 21:03:17,341 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 32671 mSDsluCounter, 1776 mSDsCounter, 0 mSdLazyCounter, 24487 mSolverCounterSat, 20735 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32671 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 45222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20735 IncrementalHoareTripleChecker+Valid, 24487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time [2023-04-01 21:03:17,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32671 Valid, 2187 Invalid, 45222 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20735 Valid, 24487 Invalid, 0 Unknown, 0 Unchecked, 25.6s Time] [2023-04-01 21:03:17,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186897 states. [2023-04-01 21:03:22,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186897 to 186188. [2023-04-01 21:03:22,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186188 states, 181272 states have (on average 1.2325179840240081) internal successors, (223421), 181960 states have internal predecessors, (223421), 818 states have call successors, (818), 818 states have call predecessors, (818), 4097 states have return successors, (76272), 3409 states have call predecessors, (76272), 817 states have call successors, (76272) [2023-04-01 21:03:24,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186188 states to 186188 states and 300511 transitions. [2023-04-01 21:03:24,377 INFO L78 Accepts]: Start accepts. Automaton has 186188 states and 300511 transitions. Word has length 1775 [2023-04-01 21:03:24,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:03:24,378 INFO L495 AbstractCegarLoop]: Abstraction has 186188 states and 300511 transitions. [2023-04-01 21:03:24,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 147.83333333333334) internal successors, (1774), 10 states have internal predecessors, (1774), 5 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 21:03:24,378 INFO L276 IsEmpty]: Start isEmpty. Operand 186188 states and 300511 transitions. [2023-04-01 21:03:25,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1863 [2023-04-01 21:03:25,276 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:03:25,278 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:25,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 21:03:25,485 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 21:03:25,485 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:03:25,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:03:25,487 INFO L85 PathProgramCache]: Analyzing trace with hash 17728426, now seen corresponding path program 1 times [2023-04-01 21:03:25,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:03:25,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821449147] [2023-04-01 21:03:25,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:03:25,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:03:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:27,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:03:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:27,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:03:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:27,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-01 21:03:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:27,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-01 21:03:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:27,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-01 21:03:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:27,531 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 187 proven. 8 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-04-01 21:03:27,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:03:27,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821449147] [2023-04-01 21:03:27,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821449147] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:03:27,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930015711] [2023-04-01 21:03:27,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:03:27,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:03:27,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:03:27,537 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 21:03:27,541 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 21:03:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:28,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 2440 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 21:03:28,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:03:28,247 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-04-01 21:03:28,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:03:28,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930015711] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:03:28,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:03:28,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2023-04-01 21:03:28,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687794545] [2023-04-01 21:03:28,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:03:28,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 21:03:28,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:03:28,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 21:03:28,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 21:03:28,252 INFO L87 Difference]: Start difference. First operand 186188 states and 300511 transitions. Second operand has 3 states, 3 states have (on average 568.3333333333334) internal successors, (1705), 3 states have internal predecessors, (1705), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 21:03:36,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:03:36,438 INFO L93 Difference]: Finished difference Result 466689 states and 754297 transitions. [2023-04-01 21:03:36,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 21:03:36,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 568.3333333333334) internal successors, (1705), 3 states have internal predecessors, (1705), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 1862 [2023-04-01 21:03:36,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:03:38,106 INFO L225 Difference]: With dead ends: 466689 [2023-04-01 21:03:38,106 INFO L226 Difference]: Without dead ends: 280507 [2023-04-01 21:03:38,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1877 GetRequests, 1873 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 21:03:38,366 INFO L413 NwaCegarLoop]: 3965 mSDtfsCounter, 1834 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 5871 mSolverCounterSat, 1087 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 4366 SdHoareTripleChecker+Invalid, 6958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1087 IncrementalHoareTripleChecker+Valid, 5871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-04-01 21:03:38,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1834 Valid, 4366 Invalid, 6958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1087 Valid, 5871 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-04-01 21:03:38,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280507 states. [2023-04-01 21:03:44,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280507 to 280498. [2023-04-01 21:03:44,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280498 states, 274390 states have (on average 1.1790553591603192) internal successors, (323521), 275170 states have internal predecessors, (323521), 1250 states have call successors, (1250), 1250 states have call predecessors, (1250), 4857 states have return successors, (98152), 4077 states have call predecessors, (98152), 1249 states have call successors, (98152) [2023-04-01 21:03:45,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280498 states to 280498 states and 422923 transitions. [2023-04-01 21:03:45,737 INFO L78 Accepts]: Start accepts. Automaton has 280498 states and 422923 transitions. Word has length 1862 [2023-04-01 21:03:45,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:03:45,737 INFO L495 AbstractCegarLoop]: Abstraction has 280498 states and 422923 transitions. [2023-04-01 21:03:45,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 568.3333333333334) internal successors, (1705), 3 states have internal predecessors, (1705), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 21:03:45,738 INFO L276 IsEmpty]: Start isEmpty. Operand 280498 states and 422923 transitions. [2023-04-01 21:03:46,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1902 [2023-04-01 21:03:46,543 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:03:46,544 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:46,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 21:03:46,749 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 21:03:46,749 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:03:46,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:03:46,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1147392571, now seen corresponding path program 1 times [2023-04-01 21:03:46,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:03:46,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676293331] [2023-04-01 21:03:46,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:03:46,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:03:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:48,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:03:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:48,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:03:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:48,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-01 21:03:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:48,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-01 21:03:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:48,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-01 21:03:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:48,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-01 21:03:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:48,601 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 229 proven. 74 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-04-01 21:03:48,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:03:48,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676293331] [2023-04-01 21:03:48,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676293331] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:03:48,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931534580] [2023-04-01 21:03:48,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:03:48,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:03:48,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:03:48,604 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 21:03:48,609 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 21:03:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:49,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 2541 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 21:03:49,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:03:49,289 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-04-01 21:03:49,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 21:03:49,493 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 230 proven. 77 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-04-01 21:03:49,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931534580] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 21:03:49,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 21:03:49,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 21:03:49,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027919121] [2023-04-01 21:03:49,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 21:03:49,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 21:03:49,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:03:49,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 21:03:49,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-04-01 21:03:49,500 INFO L87 Difference]: Start difference. First operand 280498 states and 422923 transitions. Second operand has 12 states, 12 states have (on average 158.66666666666666) internal successors, (1904), 10 states have internal predecessors, (1904), 5 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 21:04:20,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:04:20,688 INFO L93 Difference]: Finished difference Result 664069 states and 1101401 transitions. [2023-04-01 21:04:20,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-04-01 21:04:20,689 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 158.66666666666666) internal successors, (1904), 10 states have internal predecessors, (1904), 5 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 1901 [2023-04-01 21:04:20,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:04:23,627 INFO L225 Difference]: With dead ends: 664069 [2023-04-01 21:04:23,628 INFO L226 Difference]: Without dead ends: 383577 [2023-04-01 21:04:24,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3939 GetRequests, 3866 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1830 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=873, Invalid=4529, Unknown=0, NotChecked=0, Total=5402 [2023-04-01 21:04:24,314 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 16733 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 36283 mSolverCounterSat, 7261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16744 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 43544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7261 IncrementalHoareTripleChecker+Valid, 36283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2023-04-01 21:04:24,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16744 Valid, 2668 Invalid, 43544 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7261 Valid, 36283 Invalid, 0 Unknown, 0 Unchecked, 24.5s Time] [2023-04-01 21:04:24,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383577 states. [2023-04-01 21:04:31,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383577 to 367455. [2023-04-01 21:04:32,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367455 states, 359764 states have (on average 1.078712711666537) internal successors, (388082), 360742 states have internal predecessors, (388082), 1642 states have call successors, (1642), 1642 states have call predecessors, (1642), 6048 states have return successors, (68289), 5070 states have call predecessors, (68289), 1641 states have call successors, (68289) [2023-04-01 21:04:33,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367455 states to 367455 states and 458013 transitions. [2023-04-01 21:04:33,315 INFO L78 Accepts]: Start accepts. Automaton has 367455 states and 458013 transitions. Word has length 1901 [2023-04-01 21:04:33,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:04:33,315 INFO L495 AbstractCegarLoop]: Abstraction has 367455 states and 458013 transitions. [2023-04-01 21:04:33,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 158.66666666666666) internal successors, (1904), 10 states have internal predecessors, (1904), 5 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 21:04:33,315 INFO L276 IsEmpty]: Start isEmpty. Operand 367455 states and 458013 transitions. [2023-04-01 21:04:34,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1909 [2023-04-01 21:04:34,093 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:04:34,094 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:34,101 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 21:04:34,295 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 21:04:34,295 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:04:34,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:04:34,296 INFO L85 PathProgramCache]: Analyzing trace with hash 27193706, now seen corresponding path program 1 times [2023-04-01 21:04:34,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:04:34,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492586474] [2023-04-01 21:04:34,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:04:34,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:04:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:36,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:04:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:36,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:04:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:36,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-01 21:04:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:36,197 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 227 proven. 105 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 21:04:36,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:04:36,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492586474] [2023-04-01 21:04:36,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492586474] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:04:36,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374789096] [2023-04-01 21:04:36,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:04:36,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:04:36,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:04:36,201 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 21:04:36,214 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 21:04:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:04:36,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 2378 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 21:04:36,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:04:36,913 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 335 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:04:36,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 21:04:37,450 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 335 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:04:37,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374789096] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 21:04:37,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 21:04:37,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 21:04:37,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164178073] [2023-04-01 21:04:37,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 21:04:37,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 21:04:37,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:04:37,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 21:04:37,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 21:04:37,458 INFO L87 Difference]: Start difference. First operand 367455 states and 458013 transitions. Second operand has 11 states, 11 states have (on average 194.1818181818182) internal successors, (2136), 9 states have internal predecessors, (2136), 4 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6)