/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_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 20:43:56,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 20:43:56,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 20:43:56,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 20:43:56,287 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 20:43:56,319 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 20:43:56,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 20:43:56,319 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 20:43:56,319 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 20:43:56,321 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 20:43:56,321 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 20:43:56,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 20:43:56,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 20:43:56,322 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 20:43:56,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 20:43:56,323 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 20:43:56,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 20:43:56,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 20:43:56,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 20:43:56,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 20:43:56,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 20:43:56,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 20:43:56,323 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 20:43:56,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 20:43:56,324 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 20:43:56,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 20:43:56,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 20:43:56,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 20:43:56,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 20:43:56,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:43:56,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 20:43:56,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 20:43:56,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 20:43:56,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 20:43:56,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 20:43:56,325 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 20:43:56,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 20:43:56,325 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 20:43:56,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 20:43:56,326 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 20:43:56,326 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 20:43:56,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 20:43:56,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 20:43:56,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 20:43:56,593 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 20:43:56,593 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 20:43:56,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem04_label39.c [2023-04-01 20:43:57,688 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 20:43:58,151 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 20:43:58,152 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label39.c [2023-04-01 20:43:58,178 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a95c01972/833349c004d0441287c27691f95435a7/FLAGc26edac35 [2023-04-01 20:43:58,194 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a95c01972/833349c004d0441287c27691f95435a7 [2023-04-01 20:43:58,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 20:43:58,197 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 20:43:58,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 20:43:58,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 20:43:58,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 20:43:58,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:43:58" (1/1) ... [2023-04-01 20:43:58,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43828ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:58, skipping insertion in model container [2023-04-01 20:43:58,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:43:58" (1/1) ... [2023-04-01 20:43:58,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 20:43:58,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 20:43:59,373 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_label39.c[176778,176791] [2023-04-01 20:43:59,401 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:43:59,412 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 20:43:59,854 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_label39.c[176778,176791] [2023-04-01 20:43:59,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:43:59,891 INFO L208 MainTranslator]: Completed translation [2023-04-01 20:43:59,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:59 WrapperNode [2023-04-01 20:43:59,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 20:43:59,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 20:43:59,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 20:43:59,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 20:43:59,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:59" (1/1) ... [2023-04-01 20:43:59,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:59" (1/1) ... [2023-04-01 20:43:59,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:59" (1/1) ... [2023-04-01 20:43:59,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:59" (1/1) ... [2023-04-01 20:44:00,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:59" (1/1) ... [2023-04-01 20:44:00,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:59" (1/1) ... [2023-04-01 20:44:00,124 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:59" (1/1) ... [2023-04-01 20:44:00,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:59" (1/1) ... [2023-04-01 20:44:00,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 20:44:00,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 20:44:00,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 20:44:00,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 20:44:00,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:59" (1/1) ... [2023-04-01 20:44:00,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:44:00,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:44:00,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 20:44:00,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 20:44:00,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 20:44:00,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 20:44:00,240 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 20:44:00,240 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 20:44:00,240 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 20:44:00,240 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 20:44:00,240 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 20:44:00,240 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 20:44:00,240 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 20:44:00,240 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 20:44:00,240 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 20:44:00,241 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 20:44:00,241 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 20:44:00,241 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 20:44:00,241 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 20:44:00,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 20:44:00,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 20:44:00,241 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 20:44:00,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 20:44:00,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 20:44:00,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 20:44:00,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 20:44:00,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 20:44:00,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 20:44:00,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 20:44:00,338 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 20:44:00,340 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 20:44:03,892 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 20:44:03,909 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 20:44:03,910 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 20:44:03,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:44:03 BoogieIcfgContainer [2023-04-01 20:44:03,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 20:44:03,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 20:44:03,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 20:44:03,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 20:44:03,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 08:43:58" (1/3) ... [2023-04-01 20:44:03,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a161ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:44:03, skipping insertion in model container [2023-04-01 20:44:03,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:43:59" (2/3) ... [2023-04-01 20:44:03,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a161ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:44:03, skipping insertion in model container [2023-04-01 20:44:03,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:44:03" (3/3) ... [2023-04-01 20:44:03,925 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label39.c [2023-04-01 20:44:03,943 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 20:44:03,943 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 20:44:04,016 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 20:44:04,025 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;@30960a92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 20:44:04,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 20:44:04,035 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) [2023-04-01 20:44:04,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2023-04-01 20:44:04,077 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:44:04,078 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] [2023-04-01 20:44:04,079 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:44:04,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:44:04,087 INFO L85 PathProgramCache]: Analyzing trace with hash 736588995, now seen corresponding path program 1 times [2023-04-01 20:44:04,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:44:04,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264706028] [2023-04-01 20:44:04,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:44:04,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:44:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:07,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:44:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:07,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:44:07,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:44:07,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264706028] [2023-04-01 20:44:07,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264706028] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:44:07,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:44:07,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 20:44:07,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665768363] [2023-04-01 20:44:07,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:44:08,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:44:08,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:44:08,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:44:08,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 20:44:08,064 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 191.0) internal successors, (764), 3 states have internal predecessors, (764), 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) [2023-04-01 20:44:15,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:44:15,915 INFO L93 Difference]: Finished difference Result 3521 states and 6826 transitions. [2023-04-01 20:44:15,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 20:44:15,918 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 191.0) internal successors, (764), 3 states have internal predecessors, (764), 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 771 [2023-04-01 20:44:15,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:44:15,955 INFO L225 Difference]: With dead ends: 3521 [2023-04-01 20:44:15,955 INFO L226 Difference]: Without dead ends: 2547 [2023-04-01 20:44:15,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:44:15,968 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 2892 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 5828 mSolverCounterSat, 1509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2892 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 7337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1509 IncrementalHoareTripleChecker+Valid, 5828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-04-01 20:44:15,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2892 Valid, 65 Invalid, 7337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1509 Valid, 5828 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-04-01 20:44:15,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2023-04-01 20:44:16,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2534. [2023-04-01 20:44:16,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2534 states, 2497 states have (on average 1.632358830596716) internal successors, (4076), 2500 states have internal predecessors, (4076), 14 states have call successors, (14), 14 states have call predecessors, (14), 22 states have return successors, (49), 19 states have call predecessors, (49), 13 states have call successors, (49) [2023-04-01 20:44:16,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 4139 transitions. [2023-04-01 20:44:16,126 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 4139 transitions. Word has length 771 [2023-04-01 20:44:16,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:44:16,129 INFO L495 AbstractCegarLoop]: Abstraction has 2534 states and 4139 transitions. [2023-04-01 20:44:16,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 191.0) internal successors, (764), 3 states have internal predecessors, (764), 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) [2023-04-01 20:44:16,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 4139 transitions. [2023-04-01 20:44:16,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-04-01 20:44:16,151 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:44:16,152 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 20:44:16,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 20:44:16,152 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:44:16,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:44:16,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1408389935, now seen corresponding path program 1 times [2023-04-01 20:44:16,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:44:16,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423399100] [2023-04-01 20:44:16,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:44:16,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:44:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:17,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:44:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:17,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:44:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:17,295 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:44:17,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:44:17,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423399100] [2023-04-01 20:44:17,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423399100] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:44:17,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:44:17,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 20:44:17,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285678972] [2023-04-01 20:44:17,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:44:17,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 20:44:17,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:44:17,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 20:44:17,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:44:17,303 INFO L87 Difference]: Start difference. First operand 2534 states and 4139 transitions. Second operand has 7 states, 6 states have (on average 129.5) internal successors, (777), 4 states have internal predecessors, (777), 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) [2023-04-01 20:44:23,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:44:23,311 INFO L93 Difference]: Finished difference Result 7725 states and 12758 transitions. [2023-04-01 20:44:23,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 20:44:23,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 129.5) internal successors, (777), 4 states have internal predecessors, (777), 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 786 [2023-04-01 20:44:23,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:44:23,343 INFO L225 Difference]: With dead ends: 7725 [2023-04-01 20:44:23,344 INFO L226 Difference]: Without dead ends: 5197 [2023-04-01 20:44:23,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:44:23,359 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 3097 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 6046 mSolverCounterSat, 1649 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3097 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 7695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1649 IncrementalHoareTripleChecker+Valid, 6046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-04-01 20:44:23,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3097 Valid, 124 Invalid, 7695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1649 Valid, 6046 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-04-01 20:44:23,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5197 states. [2023-04-01 20:44:23,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5197 to 5152. [2023-04-01 20:44:23,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5152 states, 5048 states have (on average 1.5303090332805072) internal successors, (7725), 5064 states have internal predecessors, (7725), 26 states have call successors, (26), 26 states have call predecessors, (26), 77 states have return successors, (253), 61 states have call predecessors, (253), 25 states have call successors, (253) [2023-04-01 20:44:23,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5152 states to 5152 states and 8004 transitions. [2023-04-01 20:44:23,513 INFO L78 Accepts]: Start accepts. Automaton has 5152 states and 8004 transitions. Word has length 786 [2023-04-01 20:44:23,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:44:23,514 INFO L495 AbstractCegarLoop]: Abstraction has 5152 states and 8004 transitions. [2023-04-01 20:44:23,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 129.5) internal successors, (777), 4 states have internal predecessors, (777), 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) [2023-04-01 20:44:23,515 INFO L276 IsEmpty]: Start isEmpty. Operand 5152 states and 8004 transitions. [2023-04-01 20:44:23,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2023-04-01 20:44:23,540 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:44:23,541 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-04-01 20:44:23,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 20:44:23,541 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:44:23,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:44:23,542 INFO L85 PathProgramCache]: Analyzing trace with hash -610780109, now seen corresponding path program 1 times [2023-04-01 20:44:23,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:44:23,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584621220] [2023-04-01 20:44:23,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:44:23,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:44:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:24,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:44:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:25,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:44:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:25,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-01 20:44:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:25,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-01 20:44:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:25,072 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 73 proven. 14 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-04-01 20:44:25,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:44:25,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584621220] [2023-04-01 20:44:25,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584621220] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:44:25,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465907788] [2023-04-01 20:44:25,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:44:25,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:44:25,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:44:25,077 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:44:25,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 20:44:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:25,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:44:25,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:44:25,620 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-04-01 20:44:25,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:44:25,754 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 77 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-01 20:44:25,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465907788] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:44:25,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:44:25,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 20:44:25,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357798615] [2023-04-01 20:44:25,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:44:25,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 20:44:25,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:44:25,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 20:44:25,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:44:25,759 INFO L87 Difference]: Start difference. First operand 5152 states and 8004 transitions. Second operand has 11 states, 11 states have (on average 75.9090909090909) internal successors, (835), 9 states have internal predecessors, (835), 4 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 20:44:35,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:44:35,813 INFO L93 Difference]: Finished difference Result 26348 states and 44066 transitions. [2023-04-01 20:44:35,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-04-01 20:44:35,814 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 75.9090909090909) internal successors, (835), 9 states have internal predecessors, (835), 4 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 840 [2023-04-01 20:44:35,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:44:35,930 INFO L225 Difference]: With dead ends: 26348 [2023-04-01 20:44:35,930 INFO L226 Difference]: Without dead ends: 21202 [2023-04-01 20:44:35,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1747 GetRequests, 1709 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=291, Invalid=1115, Unknown=0, NotChecked=0, Total=1406 [2023-04-01 20:44:35,954 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 9017 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 8570 mSolverCounterSat, 6301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9017 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 14871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6301 IncrementalHoareTripleChecker+Valid, 8570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-04-01 20:44:35,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9017 Valid, 288 Invalid, 14871 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6301 Valid, 8570 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-04-01 20:44:35,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21202 states. [2023-04-01 20:44:36,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21202 to 21042. [2023-04-01 20:44:36,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21042 states, 20461 states have (on average 1.321880650994575) internal successors, (27047), 20598 states have internal predecessors, (27047), 98 states have call successors, (98), 98 states have call predecessors, (98), 482 states have return successors, (2870), 345 states have call predecessors, (2870), 97 states have call successors, (2870) [2023-04-01 20:44:36,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21042 states to 21042 states and 30015 transitions. [2023-04-01 20:44:36,660 INFO L78 Accepts]: Start accepts. Automaton has 21042 states and 30015 transitions. Word has length 840 [2023-04-01 20:44:36,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:44:36,661 INFO L495 AbstractCegarLoop]: Abstraction has 21042 states and 30015 transitions. [2023-04-01 20:44:36,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 75.9090909090909) internal successors, (835), 9 states have internal predecessors, (835), 4 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 20:44:36,662 INFO L276 IsEmpty]: Start isEmpty. Operand 21042 states and 30015 transitions. [2023-04-01 20:44:36,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2023-04-01 20:44:36,722 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:44:36,723 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:44:36,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 20:44:36,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:44:36,934 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:44:36,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:44:36,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1715737833, now seen corresponding path program 1 times [2023-04-01 20:44:36,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:44:36,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786827238] [2023-04-01 20:44:36,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:44:36,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:44:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:38,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:44:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:38,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:44:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:38,548 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:44:38,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:44:38,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786827238] [2023-04-01 20:44:38,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786827238] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:44:38,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:44:38,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:44:38,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797900581] [2023-04-01 20:44:38,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:44:38,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:44:38,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:44:38,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:44:38,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:44:38,553 INFO L87 Difference]: Start difference. First operand 21042 states and 30015 transitions. Second operand has 8 states, 7 states have (on average 136.71428571428572) internal successors, (957), 5 states have internal predecessors, (957), 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) [2023-04-01 20:44:43,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:44:43,458 INFO L93 Difference]: Finished difference Result 52510 states and 76524 transitions. [2023-04-01 20:44:43,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 20:44:43,459 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 136.71428571428572) internal successors, (957), 5 states have internal predecessors, (957), 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 966 [2023-04-01 20:44:43,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:44:43,588 INFO L225 Difference]: With dead ends: 52510 [2023-04-01 20:44:43,588 INFO L226 Difference]: Without dead ends: 31474 [2023-04-01 20:44:43,648 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 [2023-04-01 20:44:43,655 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 4928 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 5789 mSolverCounterSat, 820 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4928 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 6609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 820 IncrementalHoareTripleChecker+Valid, 5789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-04-01 20:44:43,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4928 Valid, 133 Invalid, 6609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [820 Valid, 5789 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-04-01 20:44:43,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31474 states. [2023-04-01 20:44:44,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31474 to 31381. [2023-04-01 20:44:44,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31381 states, 30573 states have (on average 1.2577437608347235) internal successors, (38453), 30772 states have internal predecessors, (38453), 146 states have call successors, (146), 146 states have call predecessors, (146), 661 states have return successors, (4338), 462 states have call predecessors, (4338), 145 states have call successors, (4338) [2023-04-01 20:44:44,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31381 states to 31381 states and 42937 transitions. [2023-04-01 20:44:44,564 INFO L78 Accepts]: Start accepts. Automaton has 31381 states and 42937 transitions. Word has length 966 [2023-04-01 20:44:44,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:44:44,564 INFO L495 AbstractCegarLoop]: Abstraction has 31381 states and 42937 transitions. [2023-04-01 20:44:44,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 136.71428571428572) internal successors, (957), 5 states have internal predecessors, (957), 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) [2023-04-01 20:44:44,565 INFO L276 IsEmpty]: Start isEmpty. Operand 31381 states and 42937 transitions. [2023-04-01 20:44:44,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2023-04-01 20:44:44,646 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:44:44,646 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:44:44,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 20:44:44,647 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:44:44,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:44:44,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1375849735, now seen corresponding path program 1 times [2023-04-01 20:44:44,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:44:44,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934709095] [2023-04-01 20:44:44,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:44:44,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:44:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:46,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:44:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:46,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:44:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:46,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-01 20:44:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:47,010 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 197 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 20:44:47,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:44:47,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934709095] [2023-04-01 20:44:47,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934709095] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:44:47,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300774541] [2023-04-01 20:44:47,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:44:47,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:44:47,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:44:47,012 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:44:47,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 20:44:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:44:47,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:44:47,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:44:47,619 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:44:47,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:44:48,175 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:44:48,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300774541] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:44:48,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:44:48,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 14 [2023-04-01 20:44:48,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075262636] [2023-04-01 20:44:48,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:44:48,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 20:44:48,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:44:48,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 20:44:48,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-04-01 20:44:48,180 INFO L87 Difference]: Start difference. First operand 31381 states and 42937 transitions. Second operand has 14 states, 14 states have (on average 96.85714285714286) internal successors, (1356), 12 states have internal predecessors, (1356), 5 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-01 20:45:02,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:45:02,082 INFO L93 Difference]: Finished difference Result 112712 states and 158935 transitions. [2023-04-01 20:45:02,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-04-01 20:45:02,083 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 96.85714285714286) internal successors, (1356), 12 states have internal predecessors, (1356), 5 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 974 [2023-04-01 20:45:02,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:45:02,306 INFO L225 Difference]: With dead ends: 112712 [2023-04-01 20:45:02,306 INFO L226 Difference]: Without dead ends: 74185 [2023-04-01 20:45:02,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2008 GetRequests, 1970 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=345, Invalid=1215, Unknown=0, NotChecked=0, Total=1560 [2023-04-01 20:45:02,383 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 15568 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 14332 mSolverCounterSat, 7535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15568 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 21867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7535 IncrementalHoareTripleChecker+Valid, 14332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2023-04-01 20:45:02,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15568 Valid, 427 Invalid, 21867 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7535 Valid, 14332 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2023-04-01 20:45:02,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74185 states. [2023-04-01 20:45:03,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74185 to 69861. [2023-04-01 20:45:03,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69861 states, 68635 states have (on average 1.0481678443942595) internal successors, (71941), 68868 states have internal predecessors, (71941), 330 states have call successors, (330), 330 states have call predecessors, (330), 895 states have return successors, (5926), 662 states have call predecessors, (5926), 329 states have call successors, (5926) [2023-04-01 20:45:04,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69861 states to 69861 states and 78197 transitions. [2023-04-01 20:45:04,144 INFO L78 Accepts]: Start accepts. Automaton has 69861 states and 78197 transitions. Word has length 974 [2023-04-01 20:45:04,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:45:04,145 INFO L495 AbstractCegarLoop]: Abstraction has 69861 states and 78197 transitions. [2023-04-01 20:45:04,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 96.85714285714286) internal successors, (1356), 12 states have internal predecessors, (1356), 5 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-01 20:45:04,146 INFO L276 IsEmpty]: Start isEmpty. Operand 69861 states and 78197 transitions. [2023-04-01 20:45:04,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1117 [2023-04-01 20:45:04,305 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:45:04,306 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:45:04,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 20:45:04,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:45:04,513 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:45:04,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:45:04,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1827867293, now seen corresponding path program 1 times [2023-04-01 20:45:04,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:45:04,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240278851] [2023-04-01 20:45:04,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:45:04,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:45:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:07,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:45:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:07,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:45:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:07,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-04-01 20:45:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:07,540 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 339 proven. 145 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 20:45:07,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:45:07,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240278851] [2023-04-01 20:45:07,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240278851] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:45:07,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773040806] [2023-04-01 20:45:07,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:45:07,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:45:07,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:45:07,542 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:45:07,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 20:45:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:07,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 1520 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 20:45:07,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:45:08,816 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-04-01 20:45:08,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:45:08,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773040806] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:45:08,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:45:08,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 20:45:08,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946023642] [2023-04-01 20:45:08,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:45:08,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:45:08,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:45:08,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:45:08,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:45:08,820 INFO L87 Difference]: Start difference. First operand 69861 states and 78197 transitions. Second operand has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 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) [2023-04-01 20:45:11,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:45:11,312 INFO L93 Difference]: Finished difference Result 175717 states and 198021 transitions. [2023-04-01 20:45:11,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:45:11,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 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 1116 [2023-04-01 20:45:11,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:45:11,639 INFO L225 Difference]: With dead ends: 175717 [2023-04-01 20:45:11,639 INFO L226 Difference]: Without dead ends: 105023 [2023-04-01 20:45:11,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1125 GetRequests, 1119 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:45:11,702 INFO L413 NwaCegarLoop]: 1042 mSDtfsCounter, 69 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 2015 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-01 20:45:11,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1075 Invalid, 2174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2015 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-01 20:45:11,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105023 states. [2023-04-01 20:45:13,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105023 to 103355. [2023-04-01 20:45:13,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103355 states, 101753 states have (on average 1.0433009346161783) internal successors, (106159), 102020 states have internal predecessors, (106159), 490 states have call successors, (490), 490 states have call predecessors, (490), 1111 states have return successors, (9062), 844 states have call predecessors, (9062), 489 states have call successors, (9062) [2023-04-01 20:45:13,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103355 states to 103355 states and 115711 transitions. [2023-04-01 20:45:13,937 INFO L78 Accepts]: Start accepts. Automaton has 103355 states and 115711 transitions. Word has length 1116 [2023-04-01 20:45:13,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:45:13,938 INFO L495 AbstractCegarLoop]: Abstraction has 103355 states and 115711 transitions. [2023-04-01 20:45:13,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 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) [2023-04-01 20:45:13,938 INFO L276 IsEmpty]: Start isEmpty. Operand 103355 states and 115711 transitions. [2023-04-01 20:45:14,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1132 [2023-04-01 20:45:14,166 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:45:14,167 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:45:14,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 20:45:14,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:45:14,374 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:45:14,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:45:14,375 INFO L85 PathProgramCache]: Analyzing trace with hash -594699039, now seen corresponding path program 1 times [2023-04-01 20:45:14,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:45:14,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029370258] [2023-04-01 20:45:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:45:14,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:45:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:16,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:45:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:16,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:45:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:16,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-01 20:45:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:16,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:45:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:16,827 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 348 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-01 20:45:16,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:45:16,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029370258] [2023-04-01 20:45:16,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029370258] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:45:16,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888955534] [2023-04-01 20:45:16,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:45:16,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:45:16,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:45:16,833 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:45:16,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 20:45:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:17,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 1562 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 20:45:17,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:45:17,999 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 354 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-01 20:45:18,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:45:18,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888955534] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:45:18,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:45:18,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-04-01 20:45:18,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629753574] [2023-04-01 20:45:18,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:45:18,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:45:18,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:45:18,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:45:18,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:45:18,003 INFO L87 Difference]: Start difference. First operand 103355 states and 115711 transitions. Second operand has 3 states, 3 states have (on average 365.6666666666667) internal successors, (1097), 3 states have internal predecessors, (1097), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 20:45:20,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:45:20,313 INFO L93 Difference]: Finished difference Result 205825 states and 230523 transitions. [2023-04-01 20:45:20,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:45:20,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 365.6666666666667) internal successors, (1097), 3 states have internal predecessors, (1097), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1131 [2023-04-01 20:45:20,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:45:20,603 INFO L225 Difference]: With dead ends: 205825 [2023-04-01 20:45:20,603 INFO L226 Difference]: Without dead ends: 103310 [2023-04-01 20:45:20,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1149 GetRequests, 1143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:45:20,961 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 120 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 2040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 20:45:20,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1040 Invalid, 2040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 20:45:21,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103310 states. [2023-04-01 20:45:22,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103310 to 103310. [2023-04-01 20:45:22,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103310 states, 101726 states have (on average 1.029805556101685) internal successors, (104758), 101984 states have internal predecessors, (104758), 490 states have call successors, (490), 490 states have call predecessors, (490), 1093 states have return successors, (6422), 835 states have call predecessors, (6422), 489 states have call successors, (6422) [2023-04-01 20:45:22,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103310 states to 103310 states and 111670 transitions. [2023-04-01 20:45:22,893 INFO L78 Accepts]: Start accepts. Automaton has 103310 states and 111670 transitions. Word has length 1131 [2023-04-01 20:45:22,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:45:22,895 INFO L495 AbstractCegarLoop]: Abstraction has 103310 states and 111670 transitions. [2023-04-01 20:45:22,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 365.6666666666667) internal successors, (1097), 3 states have internal predecessors, (1097), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 20:45:22,895 INFO L276 IsEmpty]: Start isEmpty. Operand 103310 states and 111670 transitions. [2023-04-01 20:45:22,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1184 [2023-04-01 20:45:23,000 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:45:23,000 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:45:23,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 20:45:23,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:45:23,208 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:45:23,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:45:23,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1293517079, now seen corresponding path program 1 times [2023-04-01 20:45:23,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:45:23,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52930257] [2023-04-01 20:45:23,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:45:23,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:45:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:25,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:45:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:25,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:45:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:25,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:45:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:25,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:45:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:26,167 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 416 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 20:45:26,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:45:26,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52930257] [2023-04-01 20:45:26,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52930257] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:45:26,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700317834] [2023-04-01 20:45:26,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:45:26,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:45:26,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:45:26,169 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:45:26,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 20:45:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:26,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 1621 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:45:26,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:45:27,066 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 420 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:45:27,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:45:28,103 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 420 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:45:28,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700317834] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:45:28,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:45:28,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2023-04-01 20:45:28,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010017093] [2023-04-01 20:45:28,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:45:28,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 20:45:28,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:45:28,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 20:45:28,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:45:28,108 INFO L87 Difference]: Start difference. First operand 103310 states and 111670 transitions. Second operand has 13 states, 13 states have (on average 150.23076923076923) internal successors, (1953), 11 states have internal predecessors, (1953), 9 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2023-04-01 20:45:36,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:45:36,807 INFO L93 Difference]: Finished difference Result 233175 states and 253349 transitions. [2023-04-01 20:45:36,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-01 20:45:36,808 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 150.23076923076923) internal successors, (1953), 11 states have internal predecessors, (1953), 9 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) Word has length 1183 [2023-04-01 20:45:36,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:45:37,281 INFO L225 Difference]: With dead ends: 233175 [2023-04-01 20:45:37,281 INFO L226 Difference]: Without dead ends: 129855 [2023-04-01 20:45:37,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2412 GetRequests, 2380 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2023-04-01 20:45:37,358 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 16515 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 10676 mSolverCounterSat, 1258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16515 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 11934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1258 IncrementalHoareTripleChecker+Valid, 10676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-04-01 20:45:37,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16515 Valid, 281 Invalid, 11934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1258 Valid, 10676 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-04-01 20:45:37,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129855 states. [2023-04-01 20:45:38,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129855 to 126294. [2023-04-01 20:45:39,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126294 states, 124308 states have (on average 1.0259677575055508) internal successors, (127536), 124658 states have internal predecessors, (127536), 598 states have call successors, (598), 598 states have call predecessors, (598), 1387 states have return successors, (7473), 1037 states have call predecessors, (7473), 597 states have call successors, (7473) [2023-04-01 20:45:39,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126294 states to 126294 states and 135607 transitions. [2023-04-01 20:45:39,513 INFO L78 Accepts]: Start accepts. Automaton has 126294 states and 135607 transitions. Word has length 1183 [2023-04-01 20:45:39,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:45:39,513 INFO L495 AbstractCegarLoop]: Abstraction has 126294 states and 135607 transitions. [2023-04-01 20:45:39,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 150.23076923076923) internal successors, (1953), 11 states have internal predecessors, (1953), 9 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2023-04-01 20:45:39,514 INFO L276 IsEmpty]: Start isEmpty. Operand 126294 states and 135607 transitions. [2023-04-01 20:45:39,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1437 [2023-04-01 20:45:39,632 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:45:39,633 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:45:39,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 20:45:39,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:45:39,842 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:45:39,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:45:39,843 INFO L85 PathProgramCache]: Analyzing trace with hash -323391769, now seen corresponding path program 1 times [2023-04-01 20:45:39,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:45:39,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509295992] [2023-04-01 20:45:39,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:45:39,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:45:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:42,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:45:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:42,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:45:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:42,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-01 20:45:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:42,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-04-01 20:45:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:42,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2023-04-01 20:45:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:42,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2023-04-01 20:45:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:42,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 650 proven. 420 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2023-04-01 20:45:42,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:45:42,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509295992] [2023-04-01 20:45:42,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509295992] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:45:42,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734229118] [2023-04-01 20:45:42,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:45:42,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:45:42,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:45:42,844 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:45:42,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 20:45:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:43,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 2006 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:45:43,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:45:43,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 1285 proven. 2 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2023-04-01 20:45:43,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:45:44,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 914 proven. 221 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2023-04-01 20:45:44,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734229118] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:45:44,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:45:44,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 20:45:44,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163825116] [2023-04-01 20:45:44,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:45:44,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 20:45:44,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:45:44,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 20:45:44,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:45:44,080 INFO L87 Difference]: Start difference. First operand 126294 states and 135607 transitions. Second operand has 11 states, 11 states have (on average 134.0909090909091) internal successors, (1475), 9 states have internal predecessors, (1475), 4 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 20:45:50,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:45:50,430 INFO L93 Difference]: Finished difference Result 252589 states and 271241 transitions. [2023-04-01 20:45:50,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 20:45:50,431 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 134.0909090909091) internal successors, (1475), 9 states have internal predecessors, (1475), 4 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 1436 [2023-04-01 20:45:50,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:45:50,700 INFO L225 Difference]: With dead ends: 252589 [2023-04-01 20:45:50,701 INFO L226 Difference]: Without dead ends: 127135 [2023-04-01 20:45:51,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2913 GetRequests, 2889 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2023-04-01 20:45:51,041 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 8857 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 8206 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8861 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 9013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 8206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-04-01 20:45:51,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8861 Valid, 273 Invalid, 9013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 8206 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-04-01 20:45:51,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127135 states. [2023-04-01 20:45:52,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127135 to 127018. [2023-04-01 20:45:52,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127018 states, 124751 states have (on average 1.0215469214675634) internal successors, (127439), 125220 states have internal predecessors, (127439), 598 states have call successors, (598), 598 states have call predecessors, (598), 1668 states have return successors, (6303), 1199 states have call predecessors, (6303), 597 states have call successors, (6303) [2023-04-01 20:45:53,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127018 states to 127018 states and 134340 transitions. [2023-04-01 20:45:53,018 INFO L78 Accepts]: Start accepts. Automaton has 127018 states and 134340 transitions. Word has length 1436 [2023-04-01 20:45:53,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:45:53,018 INFO L495 AbstractCegarLoop]: Abstraction has 127018 states and 134340 transitions. [2023-04-01 20:45:53,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 134.0909090909091) internal successors, (1475), 9 states have internal predecessors, (1475), 4 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 20:45:53,019 INFO L276 IsEmpty]: Start isEmpty. Operand 127018 states and 134340 transitions. [2023-04-01 20:45:53,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1466 [2023-04-01 20:45:53,332 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:45:53,332 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:45:53,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 20:45:53,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:45:53,534 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:45:53,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:45:53,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1498610517, now seen corresponding path program 1 times [2023-04-01 20:45:53,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:45:53,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141768751] [2023-04-01 20:45:53,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:45:53,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:45:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:56,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:45:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:56,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:45:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:57,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:45:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:57,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-04-01 20:45:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:57,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2023-04-01 20:45:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:57,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2023-04-01 20:45:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:57,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2023-04-01 20:45:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:57,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2023-04-01 20:45:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:57,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 673 proven. 435 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2023-04-01 20:45:57,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:45:57,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141768751] [2023-04-01 20:45:57,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141768751] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:45:57,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229689252] [2023-04-01 20:45:57,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:45:57,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:45:57,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:45:57,458 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:45:57,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 20:45:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:45:57,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 2114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:45:57,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:45:58,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 1222 proven. 2 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2023-04-01 20:45:58,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:45:58,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 931 proven. 68 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked. [2023-04-01 20:45:58,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229689252] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:45:58,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:45:58,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 20:45:58,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597531939] [2023-04-01 20:45:58,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:45:58,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 20:45:58,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:45:58,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 20:45:58,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:45:58,303 INFO L87 Difference]: Start difference. First operand 127018 states and 134340 transitions. Second operand has 11 states, 11 states have (on average 124.0909090909091) internal successors, (1365), 9 states have internal predecessors, (1365), 5 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 20:46:07,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:46:07,229 INFO L93 Difference]: Finished difference Result 254165 states and 268999 transitions. [2023-04-01 20:46:07,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-01 20:46:07,230 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 124.0909090909091) internal successors, (1365), 9 states have internal predecessors, (1365), 5 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 1465 [2023-04-01 20:46:07,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:46:07,484 INFO L225 Difference]: With dead ends: 254165 [2023-04-01 20:46:07,484 INFO L226 Difference]: Without dead ends: 127148 [2023-04-01 20:46:07,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3000 GetRequests, 2964 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=274, Invalid=986, Unknown=0, NotChecked=0, Total=1260 [2023-04-01 20:46:07,613 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 5220 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 12163 mSolverCounterSat, 1031 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5225 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 13194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1031 IncrementalHoareTripleChecker+Valid, 12163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:46:07,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5225 Valid, 351 Invalid, 13194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1031 Valid, 12163 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-04-01 20:46:07,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127148 states. [2023-04-01 20:46:09,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127148 to 127024. [2023-04-01 20:46:09,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127024 states, 124754 states have (on average 1.0153983038620005) internal successors, (126675), 125226 states have internal predecessors, (126675), 598 states have call successors, (598), 598 states have call predecessors, (598), 1671 states have return successors, (4671), 1199 states have call predecessors, (4671), 597 states have call successors, (4671) [2023-04-01 20:46:09,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127024 states to 127024 states and 131944 transitions. [2023-04-01 20:46:09,808 INFO L78 Accepts]: Start accepts. Automaton has 127024 states and 131944 transitions. Word has length 1465 [2023-04-01 20:46:09,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:46:09,808 INFO L495 AbstractCegarLoop]: Abstraction has 127024 states and 131944 transitions. [2023-04-01 20:46:09,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 124.0909090909091) internal successors, (1365), 9 states have internal predecessors, (1365), 5 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 20:46:09,809 INFO L276 IsEmpty]: Start isEmpty. Operand 127024 states and 131944 transitions. [2023-04-01 20:46:10,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1605 [2023-04-01 20:46:10,116 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:46:10,116 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:46:10,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 20:46:10,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:46:10,317 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:46:10,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:46:10,318 INFO L85 PathProgramCache]: Analyzing trace with hash -213467805, now seen corresponding path program 1 times [2023-04-01 20:46:10,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:46:10,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361920229] [2023-04-01 20:46:10,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:10,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:46:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:14,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:46:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:14,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:46:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:14,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-01 20:46:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:14,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:46:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:14,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-04-01 20:46:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:14,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2023-04-01 20:46:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:14,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2023-04-01 20:46:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:15,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:46:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:15,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 686 [2023-04-01 20:46:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:15,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1829 backedges. 1250 proven. 31 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2023-04-01 20:46:15,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:46:15,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361920229] [2023-04-01 20:46:15,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361920229] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:46:15,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791463711] [2023-04-01 20:46:15,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:15,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:46:15,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:46:15,586 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:46:15,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 20:46:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:16,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 2284 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:46:16,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:46:16,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1829 backedges. 1263 proven. 2 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2023-04-01 20:46:16,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:46:16,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1829 backedges. 1263 proven. 2 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2023-04-01 20:46:16,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791463711] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:46:16,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:46:16,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2023-04-01 20:46:16,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880137705] [2023-04-01 20:46:16,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:46:16,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 20:46:16,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:46:16,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 20:46:16,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-04-01 20:46:16,668 INFO L87 Difference]: Start difference. First operand 127024 states and 131944 transitions. Second operand has 14 states, 14 states have (on average 111.35714285714286) internal successors, (1559), 12 states have internal predecessors, (1559), 6 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2023-04-01 20:46:31,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:46:31,933 INFO L93 Difference]: Finished difference Result 260945 states and 271193 transitions. [2023-04-01 20:46:31,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-04-01 20:46:31,934 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 111.35714285714286) internal successors, (1559), 12 states have internal predecessors, (1559), 6 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) Word has length 1604 [2023-04-01 20:46:31,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:46:32,346 INFO L225 Difference]: With dead ends: 260945 [2023-04-01 20:46:32,347 INFO L226 Difference]: Without dead ends: 134761 [2023-04-01 20:46:32,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3297 GetRequests, 3253 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=430, Invalid=1462, Unknown=0, NotChecked=0, Total=1892 [2023-04-01 20:46:32,427 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 8708 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 24079 mSolverCounterSat, 788 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8708 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 24867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 788 IncrementalHoareTripleChecker+Valid, 24079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2023-04-01 20:46:32,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8708 Valid, 335 Invalid, 24867 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [788 Valid, 24079 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2023-04-01 20:46:32,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134761 states. [2023-04-01 20:46:33,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134761 to 133838. [2023-04-01 20:46:33,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133838 states, 131449 states have (on average 1.0129860249982883) internal successors, (133156), 131944 states have internal predecessors, (133156), 630 states have call successors, (630), 630 states have call predecessors, (630), 1758 states have return successors, (4232), 1263 states have call predecessors, (4232), 629 states have call successors, (4232) [2023-04-01 20:46:34,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133838 states to 133838 states and 138018 transitions. [2023-04-01 20:46:34,361 INFO L78 Accepts]: Start accepts. Automaton has 133838 states and 138018 transitions. Word has length 1604 [2023-04-01 20:46:34,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:46:34,361 INFO L495 AbstractCegarLoop]: Abstraction has 133838 states and 138018 transitions. [2023-04-01 20:46:34,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 111.35714285714286) internal successors, (1559), 12 states have internal predecessors, (1559), 6 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2023-04-01 20:46:34,362 INFO L276 IsEmpty]: Start isEmpty. Operand 133838 states and 138018 transitions. [2023-04-01 20:46:34,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1659 [2023-04-01 20:46:34,460 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:46:34,461 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:46:34,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 20:46:34,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-01 20:46:34,663 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:46:34,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:46:34,663 INFO L85 PathProgramCache]: Analyzing trace with hash -627516499, now seen corresponding path program 1 times [2023-04-01 20:46:34,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:46:34,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805334300] [2023-04-01 20:46:34,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:34,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:46:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:39,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:46:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:39,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:46:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:39,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-01 20:46:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:39,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:46:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:39,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-04-01 20:46:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:40,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2023-04-01 20:46:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:40,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2023-04-01 20:46:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:40,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2023-04-01 20:46:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:40,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 740 [2023-04-01 20:46:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:40,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2478 backedges. 1214 proven. 345 refuted. 0 times theorem prover too weak. 919 trivial. 0 not checked. [2023-04-01 20:46:40,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:46:40,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805334300] [2023-04-01 20:46:40,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805334300] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:46:40,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87138177] [2023-04-01 20:46:40,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:46:40,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:46:40,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:46:40,605 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:46:40,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 20:46:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:46:41,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 2364 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:46:41,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:46:41,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2478 backedges. 1472 proven. 2 refuted. 0 times theorem prover too weak. 1004 trivial. 0 not checked. [2023-04-01 20:46:41,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:46:41,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2478 backedges. 1472 proven. 2 refuted. 0 times theorem prover too weak. 1004 trivial. 0 not checked. [2023-04-01 20:46:41,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87138177] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:46:41,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:46:41,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2023-04-01 20:46:41,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910037582] [2023-04-01 20:46:41,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:46:41,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 20:46:41,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:46:41,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 20:46:41,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-04-01 20:46:41,877 INFO L87 Difference]: Start difference. First operand 133838 states and 138018 transitions. Second operand has 15 states, 15 states have (on average 100.0) internal successors, (1500), 13 states have internal predecessors, (1500), 6 states have call successors, (17), 7 states have call predecessors, (17), 8 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-01 20:46:59,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:46:59,724 INFO L93 Difference]: Finished difference Result 268919 states and 277768 transitions. [2023-04-01 20:46:59,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-04-01 20:46:59,725 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 100.0) internal successors, (1500), 13 states have internal predecessors, (1500), 6 states have call successors, (17), 7 states have call predecessors, (17), 8 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 1658 [2023-04-01 20:46:59,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:46:59,999 INFO L225 Difference]: With dead ends: 268919 [2023-04-01 20:46:59,999 INFO L226 Difference]: Without dead ends: 135921 [2023-04-01 20:47:00,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3439 GetRequests, 3373 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1513 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=887, Invalid=3535, Unknown=0, NotChecked=0, Total=4422 [2023-04-01 20:47:00,089 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 10993 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 22068 mSolverCounterSat, 1146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10996 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 23214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1146 IncrementalHoareTripleChecker+Valid, 22068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:47:00,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10996 Valid, 608 Invalid, 23214 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1146 Valid, 22068 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2023-04-01 20:47:00,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135921 states. [2023-04-01 20:47:01,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135921 to 135563. [2023-04-01 20:47:01,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135563 states, 133137 states have (on average 1.011664676235757) internal successors, (134690), 133638 states have internal predecessors, (134690), 638 states have call successors, (638), 638 states have call predecessors, (638), 1787 states have return successors, (3938), 1286 states have call predecessors, (3938), 637 states have call successors, (3938) [2023-04-01 20:47:02,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135563 states to 135563 states and 139266 transitions. [2023-04-01 20:47:02,362 INFO L78 Accepts]: Start accepts. Automaton has 135563 states and 139266 transitions. Word has length 1658 [2023-04-01 20:47:02,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:47:02,363 INFO L495 AbstractCegarLoop]: Abstraction has 135563 states and 139266 transitions. [2023-04-01 20:47:02,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 100.0) internal successors, (1500), 13 states have internal predecessors, (1500), 6 states have call successors, (17), 7 states have call predecessors, (17), 8 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-01 20:47:02,363 INFO L276 IsEmpty]: Start isEmpty. Operand 135563 states and 139266 transitions. [2023-04-01 20:47:02,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1927 [2023-04-01 20:47:02,485 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:47:02,486 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:47:02,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 20:47:02,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:47:02,687 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:47:02,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:47:02,687 INFO L85 PathProgramCache]: Analyzing trace with hash 523571049, now seen corresponding path program 1 times [2023-04-01 20:47:02,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:47:02,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298730996] [2023-04-01 20:47:02,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:47:02,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:47:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:08,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:47:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:08,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:47:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:08,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:47:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:08,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2023-04-01 20:47:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:09,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2023-04-01 20:47:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:09,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:47:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:10,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:47:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:10,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 940 [2023-04-01 20:47:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:10,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1008 [2023-04-01 20:47:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:10,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 1549 proven. 363 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2023-04-01 20:47:10,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:47:10,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298730996] [2023-04-01 20:47:10,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298730996] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:47:10,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638821740] [2023-04-01 20:47:10,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:47:10,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:47:10,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:47:10,721 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:47:10,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 20:47:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:47:11,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 2584 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 20:47:11,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:47:12,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 1436 proven. 151 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2023-04-01 20:47:12,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:47:13,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 1585 proven. 2 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2023-04-01 20:47:13,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638821740] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:47:13,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:47:13,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 14 [2023-04-01 20:47:13,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092320193] [2023-04-01 20:47:13,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:47:13,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 20:47:13,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:47:13,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 20:47:13,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-04-01 20:47:13,259 INFO L87 Difference]: Start difference. First operand 135563 states and 139266 transitions. Second operand has 14 states, 14 states have (on average 218.5) internal successors, (3059), 12 states have internal predecessors, (3059), 6 states have call successors, (23), 8 states have call predecessors, (23), 8 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15)