/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/Problem12_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:25:00,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:25:00,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:25:00,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:25:00,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 22:25:00,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 22:25:00,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 22:25:00,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 22:25:00,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 22:25:00,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 22:25:00,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 22:25:00,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 22:25:00,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 22:25:00,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 22:25:00,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 22:25:00,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 22:25:00,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 22:25:00,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 22:25:00,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 22:25:00,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 22:25:00,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 22:25:00,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 22:25:00,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 22:25:00,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 22:25:00,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 22:25:00,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 22:25:00,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 22:25:00,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 22:25:00,929 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 22:25:00,949 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:25:00,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:25:00,950 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:25:00,950 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:25:00,951 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:25:00,951 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:25:00,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:25:00,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:25:00,952 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:25:00,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:25:00,953 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:25:00,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:25:00,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:25:00,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:25:00,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:25:00,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:25:00,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:25:00,953 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:25:00,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:25:00,953 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:25:00,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:25:00,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:25:00,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:25:00,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:25:00,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:25:00,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:25:00,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:25:00,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:25:00,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:25:00,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:25:00,954 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:25:00,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:25:00,955 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:25:00,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:25:00,955 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:25:00,955 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:25:01,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:25:01,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:25:01,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:25:01,154 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:25:01,155 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:25:01,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label18.c [2023-04-01 22:25:02,188 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:25:02,525 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:25:02,526 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label18.c [2023-04-01 22:25:02,551 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b50c07fe4/0193b94d667b4041926200d201f5ed9b/FLAG6d7da4956 [2023-04-01 22:25:02,567 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b50c07fe4/0193b94d667b4041926200d201f5ed9b [2023-04-01 22:25:02,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:25:02,571 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:25:02,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:25:02,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:25:02,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:25:02,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:25:02" (1/1) ... [2023-04-01 22:25:02,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@611ec723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:02, skipping insertion in model container [2023-04-01 22:25:02,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:25:02" (1/1) ... [2023-04-01 22:25:02,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:25:02,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:25:02,915 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/Problem12_label18.c[6604,6617] [2023-04-01 22:25:03,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:25:03,468 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:25:03,491 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/Problem12_label18.c[6604,6617] [2023-04-01 22:25:03,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:25:03,762 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:25:03,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:03 WrapperNode [2023-04-01 22:25:03,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:25:03,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:25:03,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:25:03,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:25:03,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:03" (1/1) ... [2023-04-01 22:25:03,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:03" (1/1) ... [2023-04-01 22:25:03,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:03" (1/1) ... [2023-04-01 22:25:03,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:03" (1/1) ... [2023-04-01 22:25:03,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:03" (1/1) ... [2023-04-01 22:25:03,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:03" (1/1) ... [2023-04-01 22:25:03,885 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:03" (1/1) ... [2023-04-01 22:25:03,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:03" (1/1) ... [2023-04-01 22:25:03,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:25:03,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:25:03,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:25:03,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:25:03,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:03" (1/1) ... [2023-04-01 22:25:03,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:25:03,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:25:03,942 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 22:25:03,952 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 22:25:03,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:25:03,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:25:03,982 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:25:03,982 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:25:03,982 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:25:03,983 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:25:03,983 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:25:03,983 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:25:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:25:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:25:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:25:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:25:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:25:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:25:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:25:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:25:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:25:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:25:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:25:03,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:25:03,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:25:03,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:25:03,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:25:03,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:25:03,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:25:04,048 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:25:04,050 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:25:06,928 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:25:06,936 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:25:06,937 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:25:06,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:25:06 BoogieIcfgContainer [2023-04-01 22:25:06,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:25:06,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:25:06,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:25:06,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:25:06,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:25:02" (1/3) ... [2023-04-01 22:25:06,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a632676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:25:06, skipping insertion in model container [2023-04-01 22:25:06,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:25:03" (2/3) ... [2023-04-01 22:25:06,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a632676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:25:06, skipping insertion in model container [2023-04-01 22:25:06,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:25:06" (3/3) ... [2023-04-01 22:25:06,945 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label18.c [2023-04-01 22:25:06,957 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:25:06,957 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:25:07,007 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:25:07,012 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;@4929d2fa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:25:07,012 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:25:07,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 22:25:07,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-01 22:25:07,028 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:07,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:25:07,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:07,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:07,032 INFO L85 PathProgramCache]: Analyzing trace with hash 466383144, now seen corresponding path program 1 times [2023-04-01 22:25:07,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:07,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449057503] [2023-04-01 22:25:07,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:07,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:07,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:07,470 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 22:25:07,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:07,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449057503] [2023-04-01 22:25:07,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449057503] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:25:07,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:25:07,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 22:25:07,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616867615] [2023-04-01 22:25:07,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:25:07,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:25:07,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:07,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:25:07,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:25:07,522 INFO L87 Difference]: Start difference. First operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:25:11,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:11,926 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2023-04-01 22:25:11,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 22:25:11,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-04-01 22:25:11,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:11,949 INFO L225 Difference]: With dead ends: 2471 [2023-04-01 22:25:11,950 INFO L226 Difference]: Without dead ends: 1568 [2023-04-01 22:25:11,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:25:11,963 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 3397 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3319 mSolverCounterSat, 1446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3397 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 4765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1446 IncrementalHoareTripleChecker+Valid, 3319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:11,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3397 Valid, 42 Invalid, 4765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1446 Valid, 3319 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-04-01 22:25:11,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2023-04-01 22:25:12,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2023-04-01 22:25:12,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1553 states, 1529 states have (on average 1.8325703073904513) internal successors, (2802), 1530 states have internal predecessors, (2802), 10 states have call successors, (10), 10 states have call predecessors, (10), 13 states have return successors, (21), 12 states have call predecessors, (21), 9 states have call successors, (21) [2023-04-01 22:25:12,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2833 transitions. [2023-04-01 22:25:12,061 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2833 transitions. Word has length 59 [2023-04-01 22:25:12,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:12,062 INFO L495 AbstractCegarLoop]: Abstraction has 1553 states and 2833 transitions. [2023-04-01 22:25:12,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:25:12,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2833 transitions. [2023-04-01 22:25:12,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-04-01 22:25:12,066 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:12,066 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, 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] [2023-04-01 22:25:12,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:25:12,066 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:12,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:12,067 INFO L85 PathProgramCache]: Analyzing trace with hash 608677707, now seen corresponding path program 1 times [2023-04-01 22:25:12,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:12,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728598626] [2023-04-01 22:25:12,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:12,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:12,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:12,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:12,368 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:25:12,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:12,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728598626] [2023-04-01 22:25:12,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728598626] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:25:12,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:25:12,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:25:12,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087611288] [2023-04-01 22:25:12,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:25:12,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:25:12,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:12,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:25:12,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:25:12,372 INFO L87 Difference]: Start difference. First operand 1553 states and 2833 transitions. Second operand has 8 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:25:18,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:18,846 INFO L93 Difference]: Finished difference Result 6326 states and 11703 transitions. [2023-04-01 22:25:18,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:25:18,847 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 132 [2023-04-01 22:25:18,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:18,866 INFO L225 Difference]: With dead ends: 6326 [2023-04-01 22:25:18,867 INFO L226 Difference]: Without dead ends: 4779 [2023-04-01 22:25:18,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:25:18,877 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 6407 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 7569 mSolverCounterSat, 1357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6407 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 8926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1357 IncrementalHoareTripleChecker+Valid, 7569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:18,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6407 Valid, 187 Invalid, 8926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1357 Valid, 7569 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-04-01 22:25:18,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4779 states. [2023-04-01 22:25:18,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4779 to 4740. [2023-04-01 22:25:19,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4740 states, 4640 states have (on average 1.5732758620689655) internal successors, (7300), 4654 states have internal predecessors, (7300), 26 states have call successors, (26), 26 states have call predecessors, (26), 73 states have return successors, (255), 59 states have call predecessors, (255), 25 states have call successors, (255) [2023-04-01 22:25:19,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4740 states to 4740 states and 7581 transitions. [2023-04-01 22:25:19,017 INFO L78 Accepts]: Start accepts. Automaton has 4740 states and 7581 transitions. Word has length 132 [2023-04-01 22:25:19,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:19,018 INFO L495 AbstractCegarLoop]: Abstraction has 4740 states and 7581 transitions. [2023-04-01 22:25:19,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 18.0) internal successors, (126), 5 states have internal predecessors, (126), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:25:19,018 INFO L276 IsEmpty]: Start isEmpty. Operand 4740 states and 7581 transitions. [2023-04-01 22:25:19,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-01 22:25:19,024 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:19,025 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:25:19,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:25:19,025 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:19,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:19,025 INFO L85 PathProgramCache]: Analyzing trace with hash 2003225967, now seen corresponding path program 1 times [2023-04-01 22:25:19,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:19,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173349616] [2023-04-01 22:25:19,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:19,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:19,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:19,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:19,207 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:25:19,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:19,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173349616] [2023-04-01 22:25:19,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173349616] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:25:19,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868397806] [2023-04-01 22:25:19,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:19,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:19,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:25:19,211 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 22:25:19,243 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 22:25:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:19,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:25:19,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:25:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:25:19,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:25:19,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868397806] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:25:19,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:25:19,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:25:19,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178150689] [2023-04-01 22:25:19,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:25:19,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:25:19,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:19,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:25:19,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:25:19,417 INFO L87 Difference]: Start difference. First operand 4740 states and 7581 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:25:22,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:22,095 INFO L93 Difference]: Finished difference Result 14177 states and 23276 transitions. [2023-04-01 22:25:22,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:25:22,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 134 [2023-04-01 22:25:22,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:22,133 INFO L225 Difference]: With dead ends: 14177 [2023-04-01 22:25:22,133 INFO L226 Difference]: Without dead ends: 9443 [2023-04-01 22:25:22,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 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 22:25:22,143 INFO L413 NwaCegarLoop]: 1162 mSDtfsCounter, 727 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:22,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1194 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-01 22:25:22,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9443 states. [2023-04-01 22:25:22,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9443 to 9443. [2023-04-01 22:25:22,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9443 states, 9257 states have (on average 1.483093874905477) internal successors, (13729), 9284 states have internal predecessors, (13729), 50 states have call successors, (50), 50 states have call predecessors, (50), 135 states have return successors, (851), 108 states have call predecessors, (851), 49 states have call successors, (851) [2023-04-01 22:25:22,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9443 states to 9443 states and 14630 transitions. [2023-04-01 22:25:22,334 INFO L78 Accepts]: Start accepts. Automaton has 9443 states and 14630 transitions. Word has length 134 [2023-04-01 22:25:22,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:22,335 INFO L495 AbstractCegarLoop]: Abstraction has 9443 states and 14630 transitions. [2023-04-01 22:25:22,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:25:22,336 INFO L276 IsEmpty]: Start isEmpty. Operand 9443 states and 14630 transitions. [2023-04-01 22:25:22,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-01 22:25:22,337 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:22,338 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, 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] [2023-04-01 22:25:22,344 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 22:25:22,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:22,543 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:22,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:22,544 INFO L85 PathProgramCache]: Analyzing trace with hash 297851939, now seen corresponding path program 1 times [2023-04-01 22:25:22,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:22,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431333948] [2023-04-01 22:25:22,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:22,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:22,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:22,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:22,801 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:25:22,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:22,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431333948] [2023-04-01 22:25:22,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431333948] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:25:22,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:25:22,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:25:22,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281858297] [2023-04-01 22:25:22,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:25:22,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:25:22,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:22,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:25:22,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:25:22,803 INFO L87 Difference]: Start difference. First operand 9443 states and 14630 transitions. Second operand has 7 states, 6 states have (on average 23.0) internal successors, (138), 4 states have internal predecessors, (138), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:25:27,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:27,642 INFO L93 Difference]: Finished difference Result 28090 states and 46034 transitions. [2023-04-01 22:25:27,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 22:25:27,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 23.0) internal successors, (138), 4 states have internal predecessors, (138), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 144 [2023-04-01 22:25:27,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:27,703 INFO L225 Difference]: With dead ends: 28090 [2023-04-01 22:25:27,703 INFO L226 Difference]: Without dead ends: 18653 [2023-04-01 22:25:27,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:25:27,720 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 4499 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 5009 mSolverCounterSat, 943 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4499 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 5952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 943 IncrementalHoareTripleChecker+Valid, 5009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:27,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4499 Valid, 107 Invalid, 5952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [943 Valid, 5009 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-04-01 22:25:27,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18653 states. [2023-04-01 22:25:28,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18653 to 16910. [2023-04-01 22:25:28,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16910 states, 16438 states have (on average 1.3981019588757757) internal successors, (22982), 16543 states have internal predecessors, (22982), 86 states have call successors, (86), 86 states have call predecessors, (86), 385 states have return successors, (2603), 280 states have call predecessors, (2603), 85 states have call successors, (2603) [2023-04-01 22:25:28,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16910 states to 16910 states and 25671 transitions. [2023-04-01 22:25:28,103 INFO L78 Accepts]: Start accepts. Automaton has 16910 states and 25671 transitions. Word has length 144 [2023-04-01 22:25:28,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:28,105 INFO L495 AbstractCegarLoop]: Abstraction has 16910 states and 25671 transitions. [2023-04-01 22:25:28,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 23.0) internal successors, (138), 4 states have internal predecessors, (138), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:25:28,105 INFO L276 IsEmpty]: Start isEmpty. Operand 16910 states and 25671 transitions. [2023-04-01 22:25:28,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-04-01 22:25:28,108 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:28,108 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, 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] [2023-04-01 22:25:28,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 22:25:28,108 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:28,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:28,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1994390043, now seen corresponding path program 1 times [2023-04-01 22:25:28,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:28,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360552111] [2023-04-01 22:25:28,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:28,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:28,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:28,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:28,443 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:25:28,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:28,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360552111] [2023-04-01 22:25:28,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360552111] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:25:28,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:25:28,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:25:28,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900203612] [2023-04-01 22:25:28,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:25:28,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:25:28,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:28,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:25:28,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:25:28,445 INFO L87 Difference]: Start difference. First operand 16910 states and 25671 transitions. Second operand has 8 states, 7 states have (on average 23.714285714285715) internal successors, (166), 5 states have internal predecessors, (166), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:25:34,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:34,523 INFO L93 Difference]: Finished difference Result 53123 states and 83327 transitions. [2023-04-01 22:25:34,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:25:34,523 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 23.714285714285715) internal successors, (166), 5 states have internal predecessors, (166), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 172 [2023-04-01 22:25:34,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:34,620 INFO L225 Difference]: With dead ends: 53123 [2023-04-01 22:25:34,620 INFO L226 Difference]: Without dead ends: 36219 [2023-04-01 22:25:34,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:25:34,646 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 8542 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 5618 mSolverCounterSat, 1832 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8542 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 7450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1832 IncrementalHoareTripleChecker+Valid, 5618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:34,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8542 Valid, 151 Invalid, 7450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1832 Valid, 5618 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-04-01 22:25:34,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36219 states. [2023-04-01 22:25:35,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36219 to 31503. [2023-04-01 22:25:35,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31503 states, 30587 states have (on average 1.2478503939582175) internal successors, (38168), 30805 states have internal predecessors, (38168), 158 states have call successors, (158), 158 states have call predecessors, (158), 757 states have return successors, (5576), 539 states have call predecessors, (5576), 157 states have call successors, (5576) [2023-04-01 22:25:35,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31503 states to 31503 states and 43902 transitions. [2023-04-01 22:25:35,219 INFO L78 Accepts]: Start accepts. Automaton has 31503 states and 43902 transitions. Word has length 172 [2023-04-01 22:25:35,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:35,219 INFO L495 AbstractCegarLoop]: Abstraction has 31503 states and 43902 transitions. [2023-04-01 22:25:35,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 23.714285714285715) internal successors, (166), 5 states have internal predecessors, (166), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:25:35,220 INFO L276 IsEmpty]: Start isEmpty. Operand 31503 states and 43902 transitions. [2023-04-01 22:25:35,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-04-01 22:25:35,224 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:35,224 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, 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] [2023-04-01 22:25:35,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 22:25:35,224 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:35,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:35,224 INFO L85 PathProgramCache]: Analyzing trace with hash -588277464, now seen corresponding path program 1 times [2023-04-01 22:25:35,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:35,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039093118] [2023-04-01 22:25:35,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:35,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:35,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:35,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:35,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-04-01 22:25:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:35,742 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 104 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 22:25:35,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:35,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039093118] [2023-04-01 22:25:35,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039093118] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:25:35,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842921431] [2023-04-01 22:25:35,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:35,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:35,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:25:35,745 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 22:25:35,800 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 22:25:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:35,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 22:25:35,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:25:36,040 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-04-01 22:25:36,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:25:36,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842921431] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:25:36,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:25:36,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2023-04-01 22:25:36,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783736519] [2023-04-01 22:25:36,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:25:36,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:25:36,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:36,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:25:36,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:25:36,042 INFO L87 Difference]: Start difference. First operand 31503 states and 43902 transitions. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 4 states have internal predecessors, (194), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:25:40,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:40,553 INFO L93 Difference]: Finished difference Result 90427 states and 131022 transitions. [2023-04-01 22:25:40,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:25:40,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 4 states have internal predecessors, (194), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 253 [2023-04-01 22:25:40,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:40,782 INFO L225 Difference]: With dead ends: 90427 [2023-04-01 22:25:40,782 INFO L226 Difference]: Without dead ends: 58930 [2023-04-01 22:25:40,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:25:40,814 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 2232 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 5111 mSolverCounterSat, 1001 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 6112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1001 IncrementalHoareTripleChecker+Valid, 5111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:40,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2232 Valid, 136 Invalid, 6112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1001 Valid, 5111 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-04-01 22:25:40,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58930 states. [2023-04-01 22:25:41,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58930 to 57928. [2023-04-01 22:25:41,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57928 states, 56310 states have (on average 1.1744805540756527) internal successors, (66135), 56728 states have internal predecessors, (66135), 290 states have call successors, (290), 290 states have call predecessors, (290), 1327 states have return successors, (11405), 909 states have call predecessors, (11405), 289 states have call successors, (11405) [2023-04-01 22:25:41,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57928 states to 57928 states and 77830 transitions. [2023-04-01 22:25:41,973 INFO L78 Accepts]: Start accepts. Automaton has 57928 states and 77830 transitions. Word has length 253 [2023-04-01 22:25:41,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:41,973 INFO L495 AbstractCegarLoop]: Abstraction has 57928 states and 77830 transitions. [2023-04-01 22:25:41,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 4 states have internal predecessors, (194), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:25:41,973 INFO L276 IsEmpty]: Start isEmpty. Operand 57928 states and 77830 transitions. [2023-04-01 22:25:42,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-04-01 22:25:42,001 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:42,001 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, 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] [2023-04-01 22:25:42,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 22:25:42,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 22:25:42,202 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:42,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:42,202 INFO L85 PathProgramCache]: Analyzing trace with hash 433375715, now seen corresponding path program 1 times [2023-04-01 22:25:42,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:42,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931108324] [2023-04-01 22:25:42,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:42,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:42,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:42,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:42,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:25:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:43,075 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 102 proven. 8 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-04-01 22:25:43,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:43,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931108324] [2023-04-01 22:25:43,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931108324] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:25:43,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41958868] [2023-04-01 22:25:43,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:43,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:43,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:25:43,077 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 22:25:43,079 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 22:25:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:43,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-01 22:25:43,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:25:43,965 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-04-01 22:25:43,965 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:25:43,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41958868] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:25:43,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:25:43,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-04-01 22:25:43,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000882339] [2023-04-01 22:25:43,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:25:43,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:25:43,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:43,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:25:43,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:25:43,966 INFO L87 Difference]: Start difference. First operand 57928 states and 77830 transitions. Second operand has 5 states, 5 states have (on average 44.2) internal successors, (221), 4 states have internal predecessors, (221), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:25:48,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:48,058 INFO L93 Difference]: Finished difference Result 120912 states and 162409 transitions. [2023-04-01 22:25:48,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 22:25:48,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.2) internal successors, (221), 4 states have internal predecessors, (221), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 280 [2023-04-01 22:25:48,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:48,237 INFO L225 Difference]: With dead ends: 120912 [2023-04-01 22:25:48,237 INFO L226 Difference]: Without dead ends: 62990 [2023-04-01 22:25:48,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:25:48,303 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 2025 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4920 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 5267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 4920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:48,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2025 Valid, 156 Invalid, 5267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 4920 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-01 22:25:48,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62990 states. [2023-04-01 22:25:49,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62990 to 62702. [2023-04-01 22:25:49,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62702 states, 60967 states have (on average 1.1631210326898158) internal successors, (70912), 61420 states have internal predecessors, (70912), 314 states have call successors, (314), 314 states have call predecessors, (314), 1420 states have return successors, (12070), 967 states have call predecessors, (12070), 313 states have call successors, (12070) [2023-04-01 22:25:49,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62702 states to 62702 states and 83296 transitions. [2023-04-01 22:25:49,585 INFO L78 Accepts]: Start accepts. Automaton has 62702 states and 83296 transitions. Word has length 280 [2023-04-01 22:25:49,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:49,586 INFO L495 AbstractCegarLoop]: Abstraction has 62702 states and 83296 transitions. [2023-04-01 22:25:49,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.2) internal successors, (221), 4 states have internal predecessors, (221), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:25:49,586 INFO L276 IsEmpty]: Start isEmpty. Operand 62702 states and 83296 transitions. [2023-04-01 22:25:49,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2023-04-01 22:25:49,592 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:49,592 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:49,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 22:25:49,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:49,799 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:49,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:49,800 INFO L85 PathProgramCache]: Analyzing trace with hash -827609348, now seen corresponding path program 1 times [2023-04-01 22:25:49,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:49,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252116755] [2023-04-01 22:25:49,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:49,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:50,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:50,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:50,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-01 22:25:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:51,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-04-01 22:25:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:51,096 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 164 proven. 206 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 22:25:51,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:51,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252116755] [2023-04-01 22:25:51,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252116755] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:25:51,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091162831] [2023-04-01 22:25:51,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:51,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:51,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:25:51,098 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 22:25:51,101 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 22:25:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:51,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 22:25:51,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:25:51,848 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 322 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-04-01 22:25:51,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:25:53,757 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 233 proven. 73 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-04-01 22:25:53,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091162831] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:25:53,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:25:53,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 5] total 21 [2023-04-01 22:25:53,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947946693] [2023-04-01 22:25:53,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:25:53,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-01 22:25:53,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:53,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-01 22:25:53,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2023-04-01 22:25:53,761 INFO L87 Difference]: Start difference. First operand 62702 states and 83296 transitions. Second operand has 21 states, 21 states have (on average 34.95238095238095) internal successors, (734), 19 states have internal predecessors, (734), 6 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-04-01 22:26:14,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:14,432 INFO L93 Difference]: Finished difference Result 150038 states and 203234 transitions. [2023-04-01 22:26:14,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2023-04-01 22:26:14,432 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 34.95238095238095) internal successors, (734), 19 states have internal predecessors, (734), 6 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 355 [2023-04-01 22:26:14,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:14,676 INFO L225 Difference]: With dead ends: 150038 [2023-04-01 22:26:14,676 INFO L226 Difference]: Without dead ends: 84632 [2023-04-01 22:26:14,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 817 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7708 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=3253, Invalid=17053, Unknown=0, NotChecked=0, Total=20306 [2023-04-01 22:26:14,771 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 16928 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 19963 mSolverCounterSat, 4657 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16941 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 24620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4657 IncrementalHoareTripleChecker+Valid, 19963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:14,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16941 Valid, 1101 Invalid, 24620 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4657 Valid, 19963 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2023-04-01 22:26:14,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84632 states. [2023-04-01 22:26:16,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84632 to 77622. [2023-04-01 22:26:16,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77622 states, 75595 states have (on average 1.1233414908393413) internal successors, (84919), 76121 states have internal predecessors, (84919), 390 states have call successors, (390), 390 states have call predecessors, (390), 1636 states have return successors, (12942), 1110 states have call predecessors, (12942), 389 states have call successors, (12942) [2023-04-01 22:26:16,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77622 states to 77622 states and 98251 transitions. [2023-04-01 22:26:16,261 INFO L78 Accepts]: Start accepts. Automaton has 77622 states and 98251 transitions. Word has length 355 [2023-04-01 22:26:16,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:16,261 INFO L495 AbstractCegarLoop]: Abstraction has 77622 states and 98251 transitions. [2023-04-01 22:26:16,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 34.95238095238095) internal successors, (734), 19 states have internal predecessors, (734), 6 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-04-01 22:26:16,262 INFO L276 IsEmpty]: Start isEmpty. Operand 77622 states and 98251 transitions. [2023-04-01 22:26:16,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2023-04-01 22:26:16,268 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:16,268 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:26:16,276 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 22:26:16,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:16,474 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:16,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:16,475 INFO L85 PathProgramCache]: Analyzing trace with hash -846901789, now seen corresponding path program 1 times [2023-04-01 22:26:16,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:16,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448476930] [2023-04-01 22:26:16,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:16,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:17,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:17,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:17,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:26:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:17,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-04-01 22:26:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:17,739 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 245 proven. 109 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-04-01 22:26:17,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:17,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448476930] [2023-04-01 22:26:17,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448476930] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:17,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744256428] [2023-04-01 22:26:17,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:17,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:17,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:17,740 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 22:26:17,745 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 22:26:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:17,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 22:26:17,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:26:18,186 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 250 proven. 55 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-04-01 22:26:18,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:26:18,399 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-04-01 22:26:18,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744256428] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:18,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 22:26:18,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10, 6] total 15 [2023-04-01 22:26:18,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089654584] [2023-04-01 22:26:18,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:26:18,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:26:18,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:18,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:26:18,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:26:18,401 INFO L87 Difference]: Start difference. First operand 77622 states and 98251 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:26:21,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:21,854 INFO L93 Difference]: Finished difference Result 181576 states and 237781 transitions. [2023-04-01 22:26:21,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:26:21,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 402 [2023-04-01 22:26:21,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:22,309 INFO L225 Difference]: With dead ends: 181576 [2023-04-01 22:26:22,309 INFO L226 Difference]: Without dead ends: 101645 [2023-04-01 22:26:22,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 820 GetRequests, 807 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:26:22,360 INFO L413 NwaCegarLoop]: 1360 mSDtfsCounter, 725 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2362 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 2890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 2362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:22,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 1392 Invalid, 2890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 2362 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-01 22:26:22,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101645 states. [2023-04-01 22:26:23,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101645 to 98570. [2023-04-01 22:26:23,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98570 states, 96230 states have (on average 1.1172919048113894) internal successors, (107517), 96808 states have internal predecessors, (107517), 498 states have call successors, (498), 498 states have call predecessors, (498), 1841 states have return successors, (16906), 1263 states have call predecessors, (16906), 497 states have call successors, (16906) [2023-04-01 22:26:24,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98570 states to 98570 states and 124921 transitions. [2023-04-01 22:26:24,089 INFO L78 Accepts]: Start accepts. Automaton has 98570 states and 124921 transitions. Word has length 402 [2023-04-01 22:26:24,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:24,089 INFO L495 AbstractCegarLoop]: Abstraction has 98570 states and 124921 transitions. [2023-04-01 22:26:24,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:26:24,090 INFO L276 IsEmpty]: Start isEmpty. Operand 98570 states and 124921 transitions. [2023-04-01 22:26:24,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-04-01 22:26:24,099 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:24,099 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 22:26:24,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 22:26:24,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:24,306 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:24,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:24,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1195302733, now seen corresponding path program 1 times [2023-04-01 22:26:24,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:24,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717915662] [2023-04-01 22:26:24,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:24,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:24,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:24,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:24,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:26:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:25,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-04-01 22:26:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:25,118 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 378 proven. 8 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-04-01 22:26:25,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:25,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717915662] [2023-04-01 22:26:25,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717915662] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:25,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952496558] [2023-04-01 22:26:25,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:25,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:25,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:25,119 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:26:25,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 22:26:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:25,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:26:25,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:26:25,395 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 383 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-04-01 22:26:25,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:26:25,687 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 383 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-04-01 22:26:25,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952496558] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:26:25,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:26:25,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2023-04-01 22:26:25,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335959503] [2023-04-01 22:26:25,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:26:25,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 22:26:25,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:25,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 22:26:25,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:26:25,689 INFO L87 Difference]: Start difference. First operand 98570 states and 124921 transitions. Second operand has 15 states, 15 states have (on average 36.46666666666667) internal successors, (547), 13 states have internal predecessors, (547), 6 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 22:26:49,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:49,246 INFO L93 Difference]: Finished difference Result 272876 states and 353422 transitions. [2023-04-01 22:26:49,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-04-01 22:26:49,247 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 36.46666666666667) internal successors, (547), 13 states have internal predecessors, (547), 6 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 442 [2023-04-01 22:26:49,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:49,842 INFO L225 Difference]: With dead ends: 272876 [2023-04-01 22:26:49,843 INFO L226 Difference]: Without dead ends: 165491 [2023-04-01 22:26:49,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 949 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2567 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=962, Invalid=6520, Unknown=0, NotChecked=0, Total=7482 [2023-04-01 22:26:49,995 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 29661 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 33155 mSolverCounterSat, 5841 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29661 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 38996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5841 IncrementalHoareTripleChecker+Valid, 33155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:49,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29661 Valid, 1091 Invalid, 38996 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5841 Valid, 33155 Invalid, 0 Unknown, 0 Unchecked, 20.0s Time] [2023-04-01 22:26:50,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165491 states. [2023-04-01 22:26:52,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165491 to 122140. [2023-04-01 22:26:52,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122140 states, 119333 states have (on average 1.0522738890332095) internal successors, (125571), 120032 states have internal predecessors, (125571), 618 states have call successors, (618), 618 states have call predecessors, (618), 2188 states have return successors, (11587), 1489 states have call predecessors, (11587), 617 states have call successors, (11587) [2023-04-01 22:26:52,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122140 states to 122140 states and 137776 transitions. [2023-04-01 22:26:52,663 INFO L78 Accepts]: Start accepts. Automaton has 122140 states and 137776 transitions. Word has length 442 [2023-04-01 22:26:52,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:52,664 INFO L495 AbstractCegarLoop]: Abstraction has 122140 states and 137776 transitions. [2023-04-01 22:26:52,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 36.46666666666667) internal successors, (547), 13 states have internal predecessors, (547), 6 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 22:26:52,664 INFO L276 IsEmpty]: Start isEmpty. Operand 122140 states and 137776 transitions. [2023-04-01 22:26:52,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2023-04-01 22:26:52,678 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:52,679 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2023-04-01 22:26:52,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 22:26:52,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:52,884 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:52,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:52,885 INFO L85 PathProgramCache]: Analyzing trace with hash 790510536, now seen corresponding path program 1 times [2023-04-01 22:26:52,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:52,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894754406] [2023-04-01 22:26:52,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:52,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:53,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:53,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:53,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:26:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:53,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-04-01 22:26:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:53,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2023-04-01 22:26:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:53,348 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 460 proven. 123 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-04-01 22:26:53,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:53,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894754406] [2023-04-01 22:26:53,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894754406] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:53,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014924858] [2023-04-01 22:26:53,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:53,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:53,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:53,349 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:26:53,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 22:26:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:53,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:26:53,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:26:53,653 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 774 proven. 2 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-04-01 22:26:53,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:26:53,993 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 462 proven. 124 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2023-04-01 22:26:53,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014924858] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:26:53,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:26:53,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:26:53,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825486443] [2023-04-01 22:26:53,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:26:53,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:26:53,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:53,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:26:53,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:26:53,996 INFO L87 Difference]: Start difference. First operand 122140 states and 137776 transitions. Second operand has 11 states, 11 states have (on average 58.81818181818182) internal successors, (647), 9 states have internal predecessors, (647), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 22:27:03,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:27:03,394 INFO L93 Difference]: Finished difference Result 275225 states and 313606 transitions. [2023-04-01 22:27:03,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-01 22:27:03,394 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 58.81818181818182) internal successors, (647), 9 states have internal predecessors, (647), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 581 [2023-04-01 22:27:03,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:27:03,924 INFO L225 Difference]: With dead ends: 275225 [2023-04-01 22:27:03,925 INFO L226 Difference]: Without dead ends: 153858 [2023-04-01 22:27:04,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1202 GetRequests, 1178 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2023-04-01 22:27:04,004 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 4244 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 13769 mSolverCounterSat, 1593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4248 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 15362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1593 IncrementalHoareTripleChecker+Valid, 13769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:27:04,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4248 Valid, 263 Invalid, 15362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1593 Valid, 13769 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-04-01 22:27:04,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153858 states. [2023-04-01 22:27:06,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153858 to 144412. [2023-04-01 22:27:06,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144412 states, 141360 states have (on average 1.0336516694963214) internal successors, (146117), 142069 states have internal predecessors, (146117), 734 states have call successors, (734), 734 states have call predecessors, (734), 2317 states have return successors, (9265), 1608 states have call predecessors, (9265), 733 states have call successors, (9265) [2023-04-01 22:27:06,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144412 states to 144412 states and 156116 transitions. [2023-04-01 22:27:06,564 INFO L78 Accepts]: Start accepts. Automaton has 144412 states and 156116 transitions. Word has length 581 [2023-04-01 22:27:06,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:27:06,566 INFO L495 AbstractCegarLoop]: Abstraction has 144412 states and 156116 transitions. [2023-04-01 22:27:06,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 58.81818181818182) internal successors, (647), 9 states have internal predecessors, (647), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 22:27:06,566 INFO L276 IsEmpty]: Start isEmpty. Operand 144412 states and 156116 transitions. [2023-04-01 22:27:06,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2023-04-01 22:27:06,581 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:27:06,582 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-04-01 22:27:06,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 22:27:06,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:06,787 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:27:06,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:27:06,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1760410005, now seen corresponding path program 1 times [2023-04-01 22:27:06,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:27:06,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595714594] [2023-04-01 22:27:06,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:06,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:27:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:07,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:27:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:07,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:27:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:07,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:27:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:07,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2023-04-01 22:27:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:07,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2023-04-01 22:27:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:07,235 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 213 proven. 4 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2023-04-01 22:27:07,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:27:07,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595714594] [2023-04-01 22:27:07,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595714594] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:27:07,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457601460] [2023-04-01 22:27:07,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:07,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:07,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:27:07,237 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:27:07,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 22:27:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:07,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:27:07,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:27:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2023-04-01 22:27:07,481 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:27:07,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457601460] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:27:07,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:27:07,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 22:27:07,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65257148] [2023-04-01 22:27:07,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:27:07,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:27:07,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:27:07,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:27:07,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:27:07,482 INFO L87 Difference]: Start difference. First operand 144412 states and 156116 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:27:11,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:27:11,644 INFO L93 Difference]: Finished difference Result 331936 states and 361910 transitions. [2023-04-01 22:27:11,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:27:11,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 596 [2023-04-01 22:27:11,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:27:12,115 INFO L225 Difference]: With dead ends: 331936 [2023-04-01 22:27:12,115 INFO L226 Difference]: Without dead ends: 188297 [2023-04-01 22:27:12,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:27:12,329 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 758 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 2197 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 2819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 2197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:27:12,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 460 Invalid, 2819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 2197 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-01 22:27:12,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188297 states. [2023-04-01 22:27:14,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188297 to 185224. [2023-04-01 22:27:14,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185224 states, 181682 states have (on average 1.0338118250569677) internal successors, (187825), 182428 states have internal predecessors, (187825), 946 states have call successors, (946), 946 states have call predecessors, (946), 2595 states have return successors, (12252), 1849 states have call predecessors, (12252), 945 states have call successors, (12252) [2023-04-01 22:27:15,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185224 states to 185224 states and 201023 transitions. [2023-04-01 22:27:15,327 INFO L78 Accepts]: Start accepts. Automaton has 185224 states and 201023 transitions. Word has length 596 [2023-04-01 22:27:15,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:27:15,328 INFO L495 AbstractCegarLoop]: Abstraction has 185224 states and 201023 transitions. [2023-04-01 22:27:15,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:27:15,328 INFO L276 IsEmpty]: Start isEmpty. Operand 185224 states and 201023 transitions. [2023-04-01 22:27:15,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-04-01 22:27:15,344 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:27:15,344 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:27:15,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-04-01 22:27:15,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-01 22:27:15,549 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:27:15,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:27:15,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1536278647, now seen corresponding path program 1 times [2023-04-01 22:27:15,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:27:15,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735777621] [2023-04-01 22:27:15,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:15,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:27:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:15,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:27:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:15,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:27:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:15,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:27:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:16,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2023-04-01 22:27:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:16,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2023-04-01 22:27:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:16,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 213 proven. 4 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2023-04-01 22:27:16,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:27:16,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735777621] [2023-04-01 22:27:16,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735777621] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:27:16,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815380653] [2023-04-01 22:27:16,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:16,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:16,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:27:16,154 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:27:16,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 22:27:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:16,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-01 22:27:16,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:27:16,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 15 proven. 202 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2023-04-01 22:27:16,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:27:17,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2023-04-01 22:27:17,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815380653] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 22:27:17,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 22:27:17,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 6] total 9 [2023-04-01 22:27:17,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321113472] [2023-04-01 22:27:17,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:27:17,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:27:17,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:27:17,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:27:17,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:27:17,080 INFO L87 Difference]: Start difference. First operand 185224 states and 201023 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:27:21,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:27:21,199 INFO L93 Difference]: Finished difference Result 390273 states and 425418 transitions. [2023-04-01 22:27:21,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:27:21,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 618 [2023-04-01 22:27:21,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:27:21,202 INFO L225 Difference]: With dead ends: 390273 [2023-04-01 22:27:21,202 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 22:27:21,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1250 GetRequests, 1241 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:27:21,562 INFO L413 NwaCegarLoop]: 1151 mSDtfsCounter, 834 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 2101 mSolverCounterSat, 482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 2583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 2101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:27:21,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 1182 Invalid, 2583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [482 Valid, 2101 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-01 22:27:21,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 22:27:21,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 22:27:21,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 22:27:21,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 22:27:21,564 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 618 [2023-04-01 22:27:21,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:27:21,564 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 22:27:21,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:27:21,564 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 22:27:21,564 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 22:27:21,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 22:27:21,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-04-01 22:27:21,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 22:27:21,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.