/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/Problem04_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 22:48:09,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 22:48:09,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 22:48:09,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-30 22:48:09,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-30 22:48:09,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-30 22:48:09,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-30 22:48:10,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-30 22:48:10,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-30 22:48:10,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-30 22:48:10,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-30 22:48:10,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-30 22:48:10,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-30 22:48:10,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-30 22:48:10,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-30 22:48:10,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-30 22:48:10,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-30 22:48:10,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-30 22:48:10,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-30 22:48:10,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-30 22:48:10,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-30 22:48:10,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-30 22:48:10,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-30 22:48:10,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-30 22:48:10,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-30 22:48:10,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-30 22:48:10,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-30 22:48:10,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-30 22:48:10,020 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-30 22:48:10,033 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 22:48:10,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 22:48:10,033 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 22:48:10,033 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 22:48:10,034 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 22:48:10,034 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 22:48:10,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 22:48:10,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 22:48:10,034 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 22:48:10,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 22:48:10,035 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 22:48:10,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 22:48:10,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 22:48:10,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 22:48:10,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 22:48:10,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 22:48:10,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 22:48:10,035 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 22:48:10,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 22:48:10,036 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 22:48:10,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 22:48:10,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 22:48:10,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 22:48:10,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 22:48:10,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 22:48:10,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 22:48:10,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 22:48:10,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 22:48:10,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 22:48:10,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 22:48:10,037 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 22:48:10,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 22:48:10,037 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 22:48:10,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 22:48:10,037 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 22:48:10,037 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 22:48:10,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 22:48:10,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 22:48:10,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 22:48:10,246 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 22:48:10,246 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 22:48:10,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem04_label07.c [2023-03-30 22:48:11,146 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 22:48:11,547 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 22:48:11,548 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label07.c [2023-03-30 22:48:11,565 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4f637576/c09dbc3866324e3ba2e224ae7e46a83c/FLAG9ac80ff3f [2023-03-30 22:48:11,576 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4f637576/c09dbc3866324e3ba2e224ae7e46a83c [2023-03-30 22:48:11,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 22:48:11,578 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 22:48:11,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 22:48:11,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 22:48:11,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 22:48:11,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 10:48:11" (1/1) ... [2023-03-30 22:48:11,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24bc5d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:48:11, skipping insertion in model container [2023-03-30 22:48:11,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 10:48:11" (1/1) ... [2023-03-30 22:48:11,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 22:48:11,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 22:48:12,387 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/Problem04_label07.c[180871,180884] [2023-03-30 22:48:12,406 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 22:48:12,414 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 22:48:12,863 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/Problem04_label07.c[180871,180884] [2023-03-30 22:48:12,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 22:48:12,886 INFO L208 MainTranslator]: Completed translation [2023-03-30 22:48:12,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:48:12 WrapperNode [2023-03-30 22:48:12,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 22:48:12,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 22:48:12,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 22:48:12,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 22:48:12,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:48:12" (1/1) ... [2023-03-30 22:48:12,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:48:12" (1/1) ... [2023-03-30 22:48:12,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:48:12" (1/1) ... [2023-03-30 22:48:12,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:48:12" (1/1) ... [2023-03-30 22:48:13,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:48:12" (1/1) ... [2023-03-30 22:48:13,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:48:12" (1/1) ... [2023-03-30 22:48:13,035 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:48:12" (1/1) ... [2023-03-30 22:48:13,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:48:12" (1/1) ... [2023-03-30 22:48:13,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 22:48:13,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 22:48:13,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 22:48:13,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 22:48:13,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:48:12" (1/1) ... [2023-03-30 22:48:13,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 22:48:13,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:48:13,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-30 22:48:13,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-30 22:48:13,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 22:48:13,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 22:48:13,147 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 22:48:13,147 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 22:48:13,148 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-03-30 22:48:13,148 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-03-30 22:48:13,148 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-03-30 22:48:13,148 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 22:48:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 22:48:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-03-30 22:48:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-03-30 22:48:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-03-30 22:48:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 22:48:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 22:48:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 22:48:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 22:48:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 22:48:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 22:48:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 22:48:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 22:48:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 22:48:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 22:48:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 22:48:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 22:48:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 22:48:13,248 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 22:48:13,249 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 22:48:15,959 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 22:48:15,973 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 22:48:15,973 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 22:48:15,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 10:48:15 BoogieIcfgContainer [2023-03-30 22:48:15,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 22:48:15,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 22:48:15,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 22:48:15,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 22:48:15,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 10:48:11" (1/3) ... [2023-03-30 22:48:15,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d645152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 10:48:15, skipping insertion in model container [2023-03-30 22:48:15,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 10:48:12" (2/3) ... [2023-03-30 22:48:15,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d645152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 10:48:15, skipping insertion in model container [2023-03-30 22:48:15,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 10:48:15" (3/3) ... [2023-03-30 22:48:15,983 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label07.c [2023-03-30 22:48:15,994 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 22:48:15,994 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 22:48:16,038 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 22:48:16,042 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;@723e3200, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 22:48:16,042 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 22:48:16,048 INFO L276 IsEmpty]: Start isEmpty. Operand has 906 states, 892 states have (on average 1.913677130044843) internal successors, (1707), 893 states have internal predecessors, (1707), 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) [2023-03-30 22:48:16,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2023-03-30 22:48:16,072 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:48:16,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:48:16,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:48:16,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:48:16,077 INFO L85 PathProgramCache]: Analyzing trace with hash 806707099, now seen corresponding path program 1 times [2023-03-30 22:48:16,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:48:16,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123922248] [2023-03-30 22:48:16,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:48:16,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:48:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:18,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:48:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:18,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 22:48:18,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:48:18,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123922248] [2023-03-30 22:48:18,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123922248] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:48:18,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 22:48:18,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-30 22:48:18,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739855266] [2023-03-30 22:48:18,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:48:18,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 22:48:18,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:48:18,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 22:48:18,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 22:48:18,940 INFO L87 Difference]: Start difference. First operand has 906 states, 892 states have (on average 1.913677130044843) internal successors, (1707), 893 states have internal predecessors, (1707), 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 198.5) internal successors, (794), 3 states have internal predecessors, (794), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 22:48:23,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:48:23,783 INFO L93 Difference]: Finished difference Result 2672 states and 5138 transitions. [2023-03-30 22:48:23,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-30 22:48:23,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 198.5) internal successors, (794), 3 states have internal predecessors, (794), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 801 [2023-03-30 22:48:23,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:48:23,800 INFO L225 Difference]: With dead ends: 2672 [2023-03-30 22:48:23,800 INFO L226 Difference]: Without dead ends: 1702 [2023-03-30 22:48:23,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-03-30 22:48:23,808 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 2724 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 4262 mSolverCounterSat, 1384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2724 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 5646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1384 IncrementalHoareTripleChecker+Valid, 4262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-03-30 22:48:23,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2724 Valid, 52 Invalid, 5646 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1384 Valid, 4262 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-03-30 22:48:23,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2023-03-30 22:48:23,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1687. [2023-03-30 22:48:23,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1663 states have (on average 1.8592904389657245) internal successors, (3092), 1664 states have internal predecessors, (3092), 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) [2023-03-30 22:48:23,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 3123 transitions. [2023-03-30 22:48:23,877 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 3123 transitions. Word has length 801 [2023-03-30 22:48:23,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:48:23,879 INFO L495 AbstractCegarLoop]: Abstraction has 1687 states and 3123 transitions. [2023-03-30 22:48:23,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 198.5) internal successors, (794), 3 states have internal predecessors, (794), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 22:48:23,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 3123 transitions. [2023-03-30 22:48:23,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2023-03-30 22:48:23,891 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:48:23,891 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:48:23,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 22:48:23,892 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:48:23,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:48:23,892 INFO L85 PathProgramCache]: Analyzing trace with hash 937485627, now seen corresponding path program 1 times [2023-03-30 22:48:23,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:48:23,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953836253] [2023-03-30 22:48:23,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:48:23,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:48:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:24,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:48:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:24,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 22:48:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:24,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 22:48:24,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:48:24,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953836253] [2023-03-30 22:48:24,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953836253] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:48:24,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 22:48:24,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-30 22:48:24,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730774851] [2023-03-30 22:48:24,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:48:24,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 22:48:24,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:48:24,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 22:48:24,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 22:48:24,986 INFO L87 Difference]: Start difference. First operand 1687 states and 3123 transitions. Second operand has 8 states, 7 states have (on average 114.42857142857143) internal successors, (801), 5 states have internal predecessors, (801), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 22:48:29,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:48:29,925 INFO L93 Difference]: Finished difference Result 5149 states and 9583 transitions. [2023-03-30 22:48:29,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-30 22:48:29,926 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 114.42857142857143) internal successors, (801), 5 states have internal predecessors, (801), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 810 [2023-03-30 22:48:29,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:48:29,956 INFO L225 Difference]: With dead ends: 5149 [2023-03-30 22:48:29,957 INFO L226 Difference]: Without dead ends: 3468 [2023-03-30 22:48:29,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-03-30 22:48:29,966 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 5734 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 5461 mSolverCounterSat, 2430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5734 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 7891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2430 IncrementalHoareTripleChecker+Valid, 5461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-03-30 22:48:29,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5734 Valid, 105 Invalid, 7891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2430 Valid, 5461 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-03-30 22:48:29,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3468 states. [2023-03-30 22:48:30,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3468 to 3417. [2023-03-30 22:48:30,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3417 states, 3354 states have (on average 1.7501490757304712) internal successors, (5870), 3362 states have internal predecessors, (5870), 18 states have call successors, (18), 18 states have call predecessors, (18), 44 states have return successors, (107), 36 states have call predecessors, (107), 17 states have call successors, (107) [2023-03-30 22:48:30,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 5995 transitions. [2023-03-30 22:48:30,185 INFO L78 Accepts]: Start accepts. Automaton has 3417 states and 5995 transitions. Word has length 810 [2023-03-30 22:48:30,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:48:30,186 INFO L495 AbstractCegarLoop]: Abstraction has 3417 states and 5995 transitions. [2023-03-30 22:48:30,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 114.42857142857143) internal successors, (801), 5 states have internal predecessors, (801), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 22:48:30,187 INFO L276 IsEmpty]: Start isEmpty. Operand 3417 states and 5995 transitions. [2023-03-30 22:48:30,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2023-03-30 22:48:30,223 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:48:30,224 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:48:30,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 22:48:30,224 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:48:30,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:48:30,225 INFO L85 PathProgramCache]: Analyzing trace with hash -620078137, now seen corresponding path program 1 times [2023-03-30 22:48:30,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:48:30,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317740025] [2023-03-30 22:48:30,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:48:30,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:48:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:31,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:48:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:31,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 22:48:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:31,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-03-30 22:48:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:31,374 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-30 22:48:31,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:48:31,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317740025] [2023-03-30 22:48:31,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317740025] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:48:31,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476483997] [2023-03-30 22:48:31,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:48:31,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:48:31,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:48:31,377 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) [2023-03-30 22:48:31,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 22:48:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:31,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 1232 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 22:48:31,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:48:31,795 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 22:48:31,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:48:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 22:48:31,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476483997] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:48:31,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:48:31,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-03-30 22:48:31,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886032102] [2023-03-30 22:48:31,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:48:31,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-30 22:48:31,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:48:31,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-30 22:48:31,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-03-30 22:48:31,916 INFO L87 Difference]: Start difference. First operand 3417 states and 5995 transitions. Second operand has 11 states, 11 states have (on average 75.81818181818181) internal successors, (834), 9 states have internal predecessors, (834), 4 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-03-30 22:48:40,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:48:40,329 INFO L93 Difference]: Finished difference Result 17586 states and 32435 transitions. [2023-03-30 22:48:40,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-03-30 22:48:40,330 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 75.81818181818181) internal successors, (834), 9 states have internal predecessors, (834), 4 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 829 [2023-03-30 22:48:40,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:48:40,383 INFO L225 Difference]: With dead ends: 17586 [2023-03-30 22:48:40,383 INFO L226 Difference]: Without dead ends: 14175 [2023-03-30 22:48:40,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1705 GetRequests, 1667 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=288, Invalid=1118, Unknown=0, NotChecked=0, Total=1406 [2023-03-30 22:48:40,394 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 10502 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 7945 mSolverCounterSat, 5452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10502 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 13397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5452 IncrementalHoareTripleChecker+Valid, 7945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-03-30 22:48:40,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10502 Valid, 291 Invalid, 13397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5452 Valid, 7945 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-03-30 22:48:40,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14175 states. [2023-03-30 22:48:40,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14175 to 13995. [2023-03-30 22:48:40,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13995 states, 13621 states have (on average 1.3521033697966376) internal successors, (18417), 13704 states have internal predecessors, (18417), 66 states have call successors, (66), 66 states have call predecessors, (66), 307 states have return successors, (1607), 224 states have call predecessors, (1607), 65 states have call successors, (1607) [2023-03-30 22:48:40,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13995 states to 13995 states and 20090 transitions. [2023-03-30 22:48:40,758 INFO L78 Accepts]: Start accepts. Automaton has 13995 states and 20090 transitions. Word has length 829 [2023-03-30 22:48:40,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:48:40,758 INFO L495 AbstractCegarLoop]: Abstraction has 13995 states and 20090 transitions. [2023-03-30 22:48:40,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 75.81818181818181) internal successors, (834), 9 states have internal predecessors, (834), 4 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-03-30 22:48:40,760 INFO L276 IsEmpty]: Start isEmpty. Operand 13995 states and 20090 transitions. [2023-03-30 22:48:40,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2023-03-30 22:48:40,791 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:48:40,792 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:48:40,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-30 22:48:40,999 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 [2023-03-30 22:48:40,999 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:48:40,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:48:40,999 INFO L85 PathProgramCache]: Analyzing trace with hash 480267001, now seen corresponding path program 1 times [2023-03-30 22:48:41,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:48:41,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019730644] [2023-03-30 22:48:41,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:48:41,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:48:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:41,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:48:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:41,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 22:48:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:41,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-03-30 22:48:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:41,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-03-30 22:48:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:42,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-03-30 22:48:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:42,010 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 137 proven. 72 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-03-30 22:48:42,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:48:42,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019730644] [2023-03-30 22:48:42,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019730644] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:48:42,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610037526] [2023-03-30 22:48:42,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:48:42,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:48:42,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:48:42,014 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) [2023-03-30 22:48:42,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 22:48:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:42,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-30 22:48:42,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:48:42,391 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-03-30 22:48:42,391 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 22:48:42,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610037526] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:48:42,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 22:48:42,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-03-30 22:48:42,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601011067] [2023-03-30 22:48:42,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:48:42,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 22:48:42,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:48:42,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 22:48:42,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-03-30 22:48:42,399 INFO L87 Difference]: Start difference. First operand 13995 states and 20090 transitions. Second operand has 5 states, 5 states have (on average 169.2) internal successors, (846), 4 states have internal predecessors, (846), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 22:48:45,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:48:45,644 INFO L93 Difference]: Finished difference Result 40853 states and 60925 transitions. [2023-03-30 22:48:45,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 22:48:45,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 169.2) internal successors, (846), 4 states have internal predecessors, (846), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 950 [2023-03-30 22:48:45,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:48:45,712 INFO L225 Difference]: With dead ends: 40853 [2023-03-30 22:48:45,712 INFO L226 Difference]: Without dead ends: 26864 [2023-03-30 22:48:45,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 955 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-03-30 22:48:45,746 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 3119 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 3818 mSolverCounterSat, 2141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3119 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 5959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2141 IncrementalHoareTripleChecker+Valid, 3818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-03-30 22:48:45,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3119 Valid, 104 Invalid, 5959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2141 Valid, 3818 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-03-30 22:48:45,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26864 states. [2023-03-30 22:48:46,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26864 to 26787. [2023-03-30 22:48:46,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26787 states, 26185 states have (on average 1.2725606263127744) internal successors, (33322), 26310 states have internal predecessors, (33322), 126 states have call successors, (126), 126 states have call predecessors, (126), 475 states have return successors, (3374), 350 states have call predecessors, (3374), 125 states have call successors, (3374) [2023-03-30 22:48:46,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26787 states to 26787 states and 36822 transitions. [2023-03-30 22:48:46,510 INFO L78 Accepts]: Start accepts. Automaton has 26787 states and 36822 transitions. Word has length 950 [2023-03-30 22:48:46,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:48:46,510 INFO L495 AbstractCegarLoop]: Abstraction has 26787 states and 36822 transitions. [2023-03-30 22:48:46,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.2) internal successors, (846), 4 states have internal predecessors, (846), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 22:48:46,511 INFO L276 IsEmpty]: Start isEmpty. Operand 26787 states and 36822 transitions. [2023-03-30 22:48:46,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1040 [2023-03-30 22:48:46,547 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:48:46,548 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:48:46,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-03-30 22:48:46,754 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,SelfDestructingSolverStorable3 [2023-03-30 22:48:46,755 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:48:46,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:48:46,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1267292757, now seen corresponding path program 1 times [2023-03-30 22:48:46,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:48:46,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658558449] [2023-03-30 22:48:46,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:48:46,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:48:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:49,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:48:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:49,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 22:48:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:49,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-03-30 22:48:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:49,680 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 248 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-30 22:48:49,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:48:49,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658558449] [2023-03-30 22:48:49,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658558449] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:48:49,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440307523] [2023-03-30 22:48:49,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:48:49,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:48:49,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:48:49,697 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) [2023-03-30 22:48:49,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 22:48:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:50,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 10 conjunts are in the unsatisfiable core [2023-03-30 22:48:50,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:48:50,850 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-03-30 22:48:50,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 22:48:50,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440307523] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 22:48:50,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 22:48:50,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-03-30 22:48:50,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903475030] [2023-03-30 22:48:50,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 22:48:50,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 22:48:50,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:48:50,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 22:48:50,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-03-30 22:48:50,853 INFO L87 Difference]: Start difference. First operand 26787 states and 36822 transitions. Second operand has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 22:48:52,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:48:52,900 INFO L93 Difference]: Finished difference Result 66144 states and 90373 transitions. [2023-03-30 22:48:52,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 22:48:52,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 1039 [2023-03-30 22:48:52,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:48:52,978 INFO L225 Difference]: With dead ends: 66144 [2023-03-30 22:48:52,978 INFO L226 Difference]: Without dead ends: 39363 [2023-03-30 22:48:53,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1050 GetRequests, 1043 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-03-30 22:48:53,010 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 121 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 2878 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 3184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 2878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-03-30 22:48:53,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 368 Invalid, 3184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 2878 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-03-30 22:48:53,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39363 states. [2023-03-30 22:48:53,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39363 to 34346. [2023-03-30 22:48:53,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34346 states, 33651 states have (on average 1.232920269828534) internal successors, (41489), 33786 states have internal predecessors, (41489), 162 states have call successors, (162), 162 states have call predecessors, (162), 532 states have return successors, (4289), 397 states have call predecessors, (4289), 161 states have call successors, (4289) [2023-03-30 22:48:53,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34346 states to 34346 states and 45940 transitions. [2023-03-30 22:48:53,534 INFO L78 Accepts]: Start accepts. Automaton has 34346 states and 45940 transitions. Word has length 1039 [2023-03-30 22:48:53,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:48:53,536 INFO L495 AbstractCegarLoop]: Abstraction has 34346 states and 45940 transitions. [2023-03-30 22:48:53,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 22:48:53,536 INFO L276 IsEmpty]: Start isEmpty. Operand 34346 states and 45940 transitions. [2023-03-30 22:48:53,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1087 [2023-03-30 22:48:53,576 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:48:53,577 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:48:53,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-30 22:48:53,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:48:53,783 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:48:53,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:48:53,784 INFO L85 PathProgramCache]: Analyzing trace with hash -147653899, now seen corresponding path program 1 times [2023-03-30 22:48:53,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:48:53,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018012249] [2023-03-30 22:48:53,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:48:53,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:48:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:54,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:48:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:54,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 22:48:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:54,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-03-30 22:48:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:54,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-03-30 22:48:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:54,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-03-30 22:48:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:54,882 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 294 proven. 101 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-03-30 22:48:54,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:48:54,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018012249] [2023-03-30 22:48:54,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018012249] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:48:54,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666947432] [2023-03-30 22:48:54,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:48:54,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:48:54,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:48:54,883 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) [2023-03-30 22:48:54,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-30 22:48:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:48:55,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 22:48:55,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:48:55,493 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 401 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-03-30 22:48:55,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:48:55,940 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 401 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-03-30 22:48:55,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666947432] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:48:55,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:48:55,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-03-30 22:48:55,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148919007] [2023-03-30 22:48:55,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:48:55,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-30 22:48:55,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:48:55,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-30 22:48:55,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-03-30 22:48:55,944 INFO L87 Difference]: Start difference. First operand 34346 states and 45940 transitions. Second operand has 11 states, 11 states have (on average 122.81818181818181) internal successors, (1351), 9 states have internal predecessors, (1351), 4 states have call successors, (13), 7 states have call predecessors, (13), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-30 22:49:07,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 22:49:07,094 INFO L93 Difference]: Finished difference Result 115973 states and 165726 transitions. [2023-03-30 22:49:07,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-03-30 22:49:07,094 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 122.81818181818181) internal successors, (1351), 9 states have internal predecessors, (1351), 4 states have call successors, (13), 7 states have call predecessors, (13), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 1086 [2023-03-30 22:49:07,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 22:49:07,286 INFO L225 Difference]: With dead ends: 115973 [2023-03-30 22:49:07,287 INFO L226 Difference]: Without dead ends: 81633 [2023-03-30 22:49:07,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2241 GetRequests, 2203 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=293, Invalid=1113, Unknown=0, NotChecked=0, Total=1406 [2023-03-30 22:49:07,325 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 6965 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 13763 mSolverCounterSat, 3809 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6975 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 17572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3809 IncrementalHoareTripleChecker+Valid, 13763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-03-30 22:49:07,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6975 Valid, 407 Invalid, 17572 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3809 Valid, 13763 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2023-03-30 22:49:07,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81633 states. [2023-03-30 22:49:08,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81633 to 74494. [2023-03-30 22:49:08,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74494 states, 73056 states have (on average 1.1740719448094612) internal successors, (85773), 73342 states have internal predecessors, (85773), 350 states have call successors, (350), 350 states have call predecessors, (350), 1087 states have return successors, (10192), 801 states have call predecessors, (10192), 349 states have call successors, (10192) [2023-03-30 22:49:08,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74494 states to 74494 states and 96315 transitions. [2023-03-30 22:49:08,669 INFO L78 Accepts]: Start accepts. Automaton has 74494 states and 96315 transitions. Word has length 1086 [2023-03-30 22:49:08,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 22:49:08,670 INFO L495 AbstractCegarLoop]: Abstraction has 74494 states and 96315 transitions. [2023-03-30 22:49:08,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 122.81818181818181) internal successors, (1351), 9 states have internal predecessors, (1351), 4 states have call successors, (13), 7 states have call predecessors, (13), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-30 22:49:08,670 INFO L276 IsEmpty]: Start isEmpty. Operand 74494 states and 96315 transitions. [2023-03-30 22:49:08,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1163 [2023-03-30 22:49:08,730 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 22:49:08,730 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 22:49:08,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-30 22:49:08,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:49:08,938 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 22:49:08,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 22:49:08,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1513448743, now seen corresponding path program 1 times [2023-03-30 22:49:08,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 22:49:08,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107058337] [2023-03-30 22:49:08,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:49:08,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 22:49:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:49:11,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 22:49:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:49:11,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 22:49:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:49:11,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-03-30 22:49:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:49:11,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-03-30 22:49:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:49:11,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-03-30 22:49:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:49:11,265 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 370 proven. 145 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-03-30 22:49:11,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 22:49:11,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107058337] [2023-03-30 22:49:11,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107058337] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 22:49:11,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048972560] [2023-03-30 22:49:11,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 22:49:11,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 22:49:11,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 22:49:11,266 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) [2023-03-30 22:49:11,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-30 22:49:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 22:49:11,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 1681 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 22:49:11,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 22:49:11,714 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 285 proven. 2 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2023-03-30 22:49:11,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 22:49:11,938 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 374 proven. 144 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-03-30 22:49:11,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048972560] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 22:49:11,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 22:49:11,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2023-03-30 22:49:11,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880777312] [2023-03-30 22:49:11,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 22:49:11,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-30 22:49:11,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 22:49:11,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-30 22:49:11,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-03-30 22:49:11,942 INFO L87 Difference]: Start difference. First operand 74494 states and 96315 transitions. Second operand has 13 states, 13 states have (on average 90.38461538461539) internal successors, (1175), 11 states have internal predecessors, (1175), 5 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9)