/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_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 20:36:40,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 20:36:40,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 20:36:40,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 20:36:40,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 20:36:40,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 20:36:40,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 20:36:40,928 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 20:36:40,950 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 20:36:40,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 20:36:40,951 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 20:36:40,951 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 20:36:40,952 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 20:36:40,952 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 20:36:40,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 20:36:40,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 20:36:40,952 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 20:36:40,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 20:36:40,953 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 20:36:40,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 20:36:40,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 20:36:40,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 20:36:40,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 20:36:40,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 20:36:40,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 20:36:40,954 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 20:36:40,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 20:36:40,954 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 20:36:40,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 20:36:40,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 20:36:40,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 20:36:40,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 20:36:40,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:36:40,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 20:36:40,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 20:36:40,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 20:36:40,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 20:36:40,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 20:36:40,956 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 20:36:40,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 20:36:40,956 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 20:36:40,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 20:36:40,956 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 20:36:40,956 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 20:36:41,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 20:36:41,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 20:36:41,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 20:36:41,162 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 20:36:41,163 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 20:36:41,163 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem04_label09.c [2023-04-01 20:36:42,044 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 20:36:42,412 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 20:36:42,412 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label09.c [2023-04-01 20:36:42,432 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/199494f50/7f0da215c1fd4680a9025de809d87bc3/FLAGa0237b31e [2023-04-01 20:36:42,443 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/199494f50/7f0da215c1fd4680a9025de809d87bc3 [2023-04-01 20:36:42,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 20:36:42,447 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 20:36:42,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 20:36:42,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 20:36:42,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 20:36:42,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:36:42" (1/1) ... [2023-04-01 20:36:42,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6da3ab7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:36:42, skipping insertion in model container [2023-04-01 20:36:42,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:36:42" (1/1) ... [2023-04-01 20:36:42,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 20:36:42,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 20:36:43,260 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_label09.c[178282,178295] [2023-04-01 20:36:43,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:36:43,282 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 20:36:43,577 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_label09.c[178282,178295] [2023-04-01 20:36:43,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:36:43,601 INFO L208 MainTranslator]: Completed translation [2023-04-01 20:36:43,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:36:43 WrapperNode [2023-04-01 20:36:43,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 20:36:43,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 20:36:43,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 20:36:43,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 20:36:43,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:36:43" (1/1) ... [2023-04-01 20:36:43,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:36:43" (1/1) ... [2023-04-01 20:36:43,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:36:43" (1/1) ... [2023-04-01 20:36:43,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:36:43" (1/1) ... [2023-04-01 20:36:43,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:36:43" (1/1) ... [2023-04-01 20:36:43,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:36:43" (1/1) ... [2023-04-01 20:36:43,776 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:36:43" (1/1) ... [2023-04-01 20:36:43,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:36:43" (1/1) ... [2023-04-01 20:36:43,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 20:36:43,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 20:36:43,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 20:36:43,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 20:36:43,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:36:43" (1/1) ... [2023-04-01 20:36:43,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:36:43,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:36:43,834 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 20:36:43,876 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 20:36:43,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 20:36:43,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 20:36:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 20:36:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 20:36:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 20:36:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 20:36:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 20:36:43,898 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 20:36:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 20:36:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 20:36:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 20:36:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 20:36:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 20:36:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 20:36:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 20:36:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 20:36:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 20:36:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 20:36:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 20:36:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 20:36:43,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 20:36:43,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 20:36:43,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 20:36:43,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 20:36:43,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 20:36:43,956 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 20:36:43,976 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 20:36:46,564 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 20:36:46,574 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 20:36:46,574 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 20:36:46,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:36:46 BoogieIcfgContainer [2023-04-01 20:36:46,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 20:36:46,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 20:36:46,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 20:36:46,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 20:36:46,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 08:36:42" (1/3) ... [2023-04-01 20:36:46,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4893b364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:36:46, skipping insertion in model container [2023-04-01 20:36:46,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:36:43" (2/3) ... [2023-04-01 20:36:46,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4893b364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:36:46, skipping insertion in model container [2023-04-01 20:36:46,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:36:46" (3/3) ... [2023-04-01 20:36:46,581 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label09.c [2023-04-01 20:36:46,592 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 20:36:46,592 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 20:36:46,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 20:36:46,637 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;@64f0b6e7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 20:36:46,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 20:36:46,643 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 20:36:46,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2023-04-01 20:36:46,667 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:36:46,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:36:46,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:36:46,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:36:46,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1761171448, now seen corresponding path program 1 times [2023-04-01 20:36:46,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:36:46,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224004186] [2023-04-01 20:36:46,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:36:46,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:36:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:48,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:36:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:48,893 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 20:36:48,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:36:48,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224004186] [2023-04-01 20:36:48,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224004186] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:36:48,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:36:48,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 20:36:48,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747929465] [2023-04-01 20:36:48,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:36:48,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 20:36:48,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:36:48,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 20:36:48,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 20:36:48,921 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 4 states, 3 states have (on average 258.3333333333333) internal successors, (775), 2 states have internal predecessors, (775), 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 20:36:53,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:36:53,234 INFO L93 Difference]: Finished difference Result 2672 states and 5138 transitions. [2023-04-01 20:36:53,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 20:36:53,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 258.3333333333333) internal successors, (775), 2 states have internal predecessors, (775), 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 782 [2023-04-01 20:36:53,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:36:53,272 INFO L225 Difference]: With dead ends: 2672 [2023-04-01 20:36:53,272 INFO L226 Difference]: Without dead ends: 1702 [2023-04-01 20:36:53,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 20:36:53,280 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2035 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3405 mSolverCounterSat, 1194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 4599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1194 IncrementalHoareTripleChecker+Valid, 3405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-04-01 20:36:53,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2035 Valid, 39 Invalid, 4599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1194 Valid, 3405 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-04-01 20:36:53,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2023-04-01 20:36:53,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1687. [2023-04-01 20:36:53,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1663 states have (on average 1.7690920024052916) internal successors, (2942), 1664 states have internal predecessors, (2942), 10 states have call successors, (10), 10 states have call predecessors, (10), 13 states have return successors, (21), 12 states have call predecessors, (21), 9 states have call successors, (21) [2023-04-01 20:36:53,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2973 transitions. [2023-04-01 20:36:53,398 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2973 transitions. Word has length 782 [2023-04-01 20:36:53,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:36:53,404 INFO L495 AbstractCegarLoop]: Abstraction has 1687 states and 2973 transitions. [2023-04-01 20:36:53,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 258.3333333333333) internal successors, (775), 2 states have internal predecessors, (775), 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 20:36:53,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2973 transitions. [2023-04-01 20:36:53,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2023-04-01 20:36:53,418 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:36:53,418 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:36:53,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 20:36:53,419 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:36:53,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:36:53,421 INFO L85 PathProgramCache]: Analyzing trace with hash -863320472, now seen corresponding path program 1 times [2023-04-01 20:36:53,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:36:53,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876743727] [2023-04-01 20:36:53,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:36:53,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:36:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:54,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:36:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:54,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:36:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:36:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:36:54,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:36:54,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876743727] [2023-04-01 20:36:54,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876743727] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:36:54,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:36:54,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:36:54,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116801752] [2023-04-01 20:36:54,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:36:54,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:36:54,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:36:54,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:36:54,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:36:54,690 INFO L87 Difference]: Start difference. First operand 1687 states and 2973 transitions. Second operand has 8 states, 7 states have (on average 111.71428571428571) internal successors, (782), 5 states have internal predecessors, (782), 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 20:37:00,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:37:00,294 INFO L93 Difference]: Finished difference Result 5160 states and 9152 transitions. [2023-04-01 20:37:00,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 20:37:00,296 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 111.71428571428571) internal successors, (782), 5 states have internal predecessors, (782), 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 791 [2023-04-01 20:37:00,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:37:00,311 INFO L225 Difference]: With dead ends: 5160 [2023-04-01 20:37:00,311 INFO L226 Difference]: Without dead ends: 3479 [2023-04-01 20:37:00,317 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 20:37:00,321 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 3107 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 6976 mSolverCounterSat, 1459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3107 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 8435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1459 IncrementalHoareTripleChecker+Valid, 6976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:37:00,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3107 Valid, 133 Invalid, 8435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1459 Valid, 6976 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-04-01 20:37:00,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2023-04-01 20:37:00,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3418. [2023-04-01 20:37:00,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 3355 states have (on average 1.6748137108792847) internal successors, (5619), 3362 states have internal predecessors, (5619), 18 states have call successors, (18), 18 states have call predecessors, (18), 44 states have return successors, (106), 37 states have call predecessors, (106), 17 states have call successors, (106) [2023-04-01 20:37:00,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 5743 transitions. [2023-04-01 20:37:00,429 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 5743 transitions. Word has length 791 [2023-04-01 20:37:00,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:37:00,429 INFO L495 AbstractCegarLoop]: Abstraction has 3418 states and 5743 transitions. [2023-04-01 20:37:00,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 111.71428571428571) internal successors, (782), 5 states have internal predecessors, (782), 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 20:37:00,430 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 5743 transitions. [2023-04-01 20:37:00,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2023-04-01 20:37:00,446 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:37:00,447 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:37:00,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 20:37:00,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:37:00,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:37:00,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1694892718, now seen corresponding path program 1 times [2023-04-01 20:37:00,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:37:00,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309870135] [2023-04-01 20:37:00,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:37:00,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:37:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:01,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:37:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:01,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:37:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:01,516 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:37:01,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:37:01,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309870135] [2023-04-01 20:37:01,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309870135] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:37:01,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:37:01,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:37:01,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127987283] [2023-04-01 20:37:01,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:37:01,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:37:01,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:37:01,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:37:01,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:37:01,520 INFO L87 Difference]: Start difference. First operand 3418 states and 5743 transitions. Second operand has 8 states, 7 states have (on average 113.28571428571429) internal successors, (793), 5 states have internal predecessors, (793), 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 20:37:07,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:37:07,515 INFO L93 Difference]: Finished difference Result 13938 states and 24261 transitions. [2023-04-01 20:37:07,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 20:37:07,515 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 113.28571428571429) internal successors, (793), 5 states have internal predecessors, (793), 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 802 [2023-04-01 20:37:07,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:37:07,550 INFO L225 Difference]: With dead ends: 13938 [2023-04-01 20:37:07,550 INFO L226 Difference]: Without dead ends: 10526 [2023-04-01 20:37:07,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 20:37:07,562 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 7582 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 6324 mSolverCounterSat, 2188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7582 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 8512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2188 IncrementalHoareTripleChecker+Valid, 6324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-04-01 20:37:07,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7582 Valid, 153 Invalid, 8512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2188 Valid, 6324 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-04-01 20:37:07,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10526 states. [2023-04-01 20:37:07,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10526 to 10479. [2023-04-01 20:37:07,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10479 states, 10206 states have (on average 1.4620811287477955) internal successors, (14922), 10262 states have internal predecessors, (14922), 50 states have call successors, (50), 50 states have call predecessors, (50), 222 states have return successors, (1111), 166 states have call predecessors, (1111), 49 states have call successors, (1111) [2023-04-01 20:37:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10479 states to 10479 states and 16083 transitions. [2023-04-01 20:37:07,845 INFO L78 Accepts]: Start accepts. Automaton has 10479 states and 16083 transitions. Word has length 802 [2023-04-01 20:37:07,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:37:07,845 INFO L495 AbstractCegarLoop]: Abstraction has 10479 states and 16083 transitions. [2023-04-01 20:37:07,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 113.28571428571429) internal successors, (793), 5 states have internal predecessors, (793), 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 20:37:07,846 INFO L276 IsEmpty]: Start isEmpty. Operand 10479 states and 16083 transitions. [2023-04-01 20:37:07,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2023-04-01 20:37:07,867 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:37:07,868 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:37:07,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 20:37:07,868 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:37:07,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:37:07,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1920045818, now seen corresponding path program 1 times [2023-04-01 20:37:07,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:37:07,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275666027] [2023-04-01 20:37:07,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:37:07,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:37:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:09,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:37:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:09,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:37:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:09,327 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 20:37:09,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:37:09,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275666027] [2023-04-01 20:37:09,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275666027] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:37:09,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820767612] [2023-04-01 20:37:09,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:37:09,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:37:09,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:37:09,358 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 20:37:09,371 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 20:37:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:09,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 20:37:09,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:37:10,459 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:37:10,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:37:10,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820767612] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:37:10,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:37:10,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 20:37:10,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304933743] [2023-04-01 20:37:10,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:37:10,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:37:10,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:37:10,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:37:10,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:37:10,462 INFO L87 Difference]: Start difference. First operand 10479 states and 16083 transitions. Second operand has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 20:37:12,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:37:12,965 INFO L93 Difference]: Finished difference Result 31209 states and 49709 transitions. [2023-04-01 20:37:12,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:37:12,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 808 [2023-04-01 20:37:12,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:37:13,101 INFO L225 Difference]: With dead ends: 31209 [2023-04-01 20:37:13,102 INFO L226 Difference]: Without dead ends: 20736 [2023-04-01 20:37:13,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 820 GetRequests, 814 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:37:13,162 INFO L413 NwaCegarLoop]: 1400 mSDtfsCounter, 85 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 2347 mSolverCounterSat, 956 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 3303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 956 IncrementalHoareTripleChecker+Valid, 2347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-01 20:37:13,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1431 Invalid, 3303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [956 Valid, 2347 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-01 20:37:13,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20736 states. [2023-04-01 20:37:13,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20736 to 20734. [2023-04-01 20:37:13,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20734 states, 20270 states have (on average 1.3963492846571288) internal successors, (28304), 20364 states have internal predecessors, (28304), 98 states have call successors, (98), 98 states have call predecessors, (98), 365 states have return successors, (3228), 271 states have call predecessors, (3228), 97 states have call successors, (3228) [2023-04-01 20:37:13,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20734 states to 20734 states and 31630 transitions. [2023-04-01 20:37:13,670 INFO L78 Accepts]: Start accepts. Automaton has 20734 states and 31630 transitions. Word has length 808 [2023-04-01 20:37:13,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:37:13,671 INFO L495 AbstractCegarLoop]: Abstraction has 20734 states and 31630 transitions. [2023-04-01 20:37:13,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 20:37:13,672 INFO L276 IsEmpty]: Start isEmpty. Operand 20734 states and 31630 transitions. [2023-04-01 20:37:13,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2023-04-01 20:37:13,708 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:37:13,709 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:37:13,719 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 20:37:13,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:37:13,920 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:37:13,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:37:13,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1719591654, now seen corresponding path program 1 times [2023-04-01 20:37:13,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:37:13,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152075187] [2023-04-01 20:37:13,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:37:13,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:37:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:14,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:37:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:14,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:37:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:14,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:37:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:15,052 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 20:37:15,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:37:15,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152075187] [2023-04-01 20:37:15,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152075187] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:37:15,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565832463] [2023-04-01 20:37:15,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:37:15,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:37:15,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:37:15,063 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 20:37:15,065 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 20:37:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:15,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 1287 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:37:15,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:37:15,427 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:37:15,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:37:15,650 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:37:15,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565832463] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:37:15,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:37:15,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2023-04-01 20:37:15,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620047111] [2023-04-01 20:37:15,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:37:15,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 20:37:15,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:37:15,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 20:37:15,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:37:15,653 INFO L87 Difference]: Start difference. First operand 20734 states and 31630 transitions. Second operand has 13 states, 13 states have (on average 79.15384615384616) internal successors, (1029), 11 states have internal predecessors, (1029), 4 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 20:37:22,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:37:22,339 INFO L93 Difference]: Finished difference Result 75515 states and 123485 transitions. [2023-04-01 20:37:22,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 20:37:22,340 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 79.15384615384616) internal successors, (1029), 11 states have internal predecessors, (1029), 4 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 881 [2023-04-01 20:37:22,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:37:22,524 INFO L225 Difference]: With dead ends: 75515 [2023-04-01 20:37:22,524 INFO L226 Difference]: Without dead ends: 54787 [2023-04-01 20:37:22,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1788 GetRequests, 1766 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-04-01 20:37:22,577 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 5464 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 12333 mSolverCounterSat, 1354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5464 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 13687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1354 IncrementalHoareTripleChecker+Valid, 12333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-04-01 20:37:22,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5464 Valid, 224 Invalid, 13687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1354 Valid, 12333 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-04-01 20:37:22,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54787 states. [2023-04-01 20:37:23,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54787 to 54533. [2023-04-01 20:37:23,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54533 states, 53575 states have (on average 1.2813065795613625) internal successors, (68646), 53752 states have internal predecessors, (68646), 258 states have call successors, (258), 258 states have call predecessors, (258), 699 states have return successors, (9073), 522 states have call predecessors, (9073), 257 states have call successors, (9073) [2023-04-01 20:37:23,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54533 states to 54533 states and 77977 transitions. [2023-04-01 20:37:23,625 INFO L78 Accepts]: Start accepts. Automaton has 54533 states and 77977 transitions. Word has length 881 [2023-04-01 20:37:23,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:37:23,626 INFO L495 AbstractCegarLoop]: Abstraction has 54533 states and 77977 transitions. [2023-04-01 20:37:23,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 79.15384615384616) internal successors, (1029), 11 states have internal predecessors, (1029), 4 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-01 20:37:23,626 INFO L276 IsEmpty]: Start isEmpty. Operand 54533 states and 77977 transitions. [2023-04-01 20:37:23,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1030 [2023-04-01 20:37:23,696 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:37:23,697 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:37:23,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 20:37:23,902 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 20:37:23,903 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:37:23,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:37:23,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1384841748, now seen corresponding path program 1 times [2023-04-01 20:37:23,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:37:23,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533815000] [2023-04-01 20:37:23,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:37:23,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:37:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:24,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:37:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:24,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:37:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:25,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 20:37:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:25,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-04-01 20:37:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:25,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-04-01 20:37:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:25,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-04-01 20:37:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:25,164 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 232 proven. 82 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-04-01 20:37:25,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:37:25,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533815000] [2023-04-01 20:37:25,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533815000] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:37:25,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902256362] [2023-04-01 20:37:25,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:37:25,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:37:25,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:37:25,182 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 20:37:25,183 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 20:37:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:25,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 1598 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:37:25,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:37:25,537 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 309 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-04-01 20:37:25,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:37:25,606 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 273 proven. 28 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-04-01 20:37:25,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902256362] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:37:25,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:37:25,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 20:37:25,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018980185] [2023-04-01 20:37:25,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:37:25,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:37:25,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:37:25,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:37:25,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:37:25,609 INFO L87 Difference]: Start difference. First operand 54533 states and 77977 transitions. Second operand has 12 states, 12 states have (on average 91.75) internal successors, (1101), 10 states have internal predecessors, (1101), 5 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 20:37:39,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:37:39,870 INFO L93 Difference]: Finished difference Result 173335 states and 262891 transitions. [2023-04-01 20:37:39,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-04-01 20:37:39,871 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 91.75) internal successors, (1101), 10 states have internal predecessors, (1101), 5 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 1029 [2023-04-01 20:37:39,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:37:40,416 INFO L225 Difference]: With dead ends: 173335 [2023-04-01 20:37:40,416 INFO L226 Difference]: Without dead ends: 118808 [2023-04-01 20:37:40,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2140 GetRequests, 2093 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=438, Invalid=1818, Unknown=0, NotChecked=0, Total=2256 [2023-04-01 20:37:40,476 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 10812 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 20000 mSolverCounterSat, 3628 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10812 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 23628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3628 IncrementalHoareTripleChecker+Valid, 20000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-04-01 20:37:40,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10812 Valid, 621 Invalid, 23628 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3628 Valid, 20000 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2023-04-01 20:37:40,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118808 states. [2023-04-01 20:37:42,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118808 to 99120. [2023-04-01 20:37:42,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99120 states, 97590 states have (on average 1.2009529664924685) internal successors, (117201), 97826 states have internal predecessors, (117201), 470 states have call successors, (470), 470 states have call predecessors, (470), 1059 states have return successors, (14627), 823 states have call predecessors, (14627), 469 states have call successors, (14627) [2023-04-01 20:37:42,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99120 states to 99120 states and 132298 transitions. [2023-04-01 20:37:42,638 INFO L78 Accepts]: Start accepts. Automaton has 99120 states and 132298 transitions. Word has length 1029 [2023-04-01 20:37:42,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:37:42,639 INFO L495 AbstractCegarLoop]: Abstraction has 99120 states and 132298 transitions. [2023-04-01 20:37:42,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 91.75) internal successors, (1101), 10 states have internal predecessors, (1101), 5 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 20:37:42,639 INFO L276 IsEmpty]: Start isEmpty. Operand 99120 states and 132298 transitions. [2023-04-01 20:37:42,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1213 [2023-04-01 20:37:42,959 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:37:42,960 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:37:42,966 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 20:37:43,166 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 20:37:43,166 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:37:43,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:37:43,167 INFO L85 PathProgramCache]: Analyzing trace with hash 435799224, now seen corresponding path program 1 times [2023-04-01 20:37:43,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:37:43,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075434978] [2023-04-01 20:37:43,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:37:43,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:37:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:44,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:37:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:44,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:37:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:44,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-01 20:37:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:44,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-01 20:37:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:44,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-04-01 20:37:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:44,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-04-01 20:37:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:44,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2023-04-01 20:37:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:44,946 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 412 proven. 15 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2023-04-01 20:37:44,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:37:44,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075434978] [2023-04-01 20:37:44,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075434978] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:37:44,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964419088] [2023-04-01 20:37:44,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:37:44,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:37:44,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:37:44,948 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 20:37:44,949 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 20:37:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:45,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:37:45,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:37:45,573 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 237 proven. 2 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2023-04-01 20:37:45,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:37:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 434 proven. 145 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-04-01 20:37:45,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964419088] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:37:45,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:37:45,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2023-04-01 20:37:45,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865025220] [2023-04-01 20:37:45,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:37:45,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 20:37:45,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:37:45,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 20:37:45,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:37:45,784 INFO L87 Difference]: Start difference. First operand 99120 states and 132298 transitions. Second operand has 13 states, 13 states have (on average 82.0) internal successors, (1066), 11 states have internal predecessors, (1066), 5 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 20:37:55,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:37:55,295 INFO L93 Difference]: Finished difference Result 213782 states and 286620 transitions. [2023-04-01 20:37:55,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-04-01 20:37:55,295 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 82.0) internal successors, (1066), 11 states have internal predecessors, (1066), 5 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 1212 [2023-04-01 20:37:55,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:37:55,665 INFO L225 Difference]: With dead ends: 213782 [2023-04-01 20:37:55,665 INFO L226 Difference]: Without dead ends: 115502 [2023-04-01 20:37:55,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2492 GetRequests, 2454 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=341, Invalid=1141, Unknown=0, NotChecked=0, Total=1482 [2023-04-01 20:37:55,768 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 16937 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 13558 mSolverCounterSat, 5011 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16937 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 18569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5011 IncrementalHoareTripleChecker+Valid, 13558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-04-01 20:37:55,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16937 Valid, 421 Invalid, 18569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5011 Valid, 13558 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-04-01 20:37:55,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115502 states. [2023-04-01 20:37:57,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115502 to 101128. [2023-04-01 20:37:57,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101128 states, 99455 states have (on average 1.1399728520436379) internal successors, (113376), 99732 states have internal predecessors, (113376), 478 states have call successors, (478), 478 states have call predecessors, (478), 1194 states have return successors, (11879), 917 states have call predecessors, (11879), 477 states have call successors, (11879) [2023-04-01 20:37:57,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101128 states to 101128 states and 125733 transitions. [2023-04-01 20:37:57,649 INFO L78 Accepts]: Start accepts. Automaton has 101128 states and 125733 transitions. Word has length 1212 [2023-04-01 20:37:57,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:37:57,650 INFO L495 AbstractCegarLoop]: Abstraction has 101128 states and 125733 transitions. [2023-04-01 20:37:57,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 82.0) internal successors, (1066), 11 states have internal predecessors, (1066), 5 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 20:37:57,650 INFO L276 IsEmpty]: Start isEmpty. Operand 101128 states and 125733 transitions. [2023-04-01 20:37:57,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1220 [2023-04-01 20:37:57,836 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:37:57,837 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:37:57,843 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 20:37:58,043 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 20:37:58,043 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:37:58,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:37:58,044 INFO L85 PathProgramCache]: Analyzing trace with hash 239197030, now seen corresponding path program 1 times [2023-04-01 20:37:58,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:37:58,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023111327] [2023-04-01 20:37:58,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:37:58,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:37:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:58,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:37:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:58,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:37:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:58,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-01 20:37:58,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:59,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-04-01 20:37:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:59,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2023-04-01 20:37:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:59,070 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 538 proven. 132 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-04-01 20:37:59,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:37:59,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023111327] [2023-04-01 20:37:59,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023111327] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:37:59,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313297370] [2023-04-01 20:37:59,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:37:59,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:37:59,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:37:59,072 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 20:37:59,074 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 20:37:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:37:59,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:37:59,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:37:59,566 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 620 proven. 2 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-04-01 20:37:59,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:37:59,813 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 539 proven. 134 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2023-04-01 20:37:59,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313297370] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:37:59,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:37:59,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 20:37:59,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260135037] [2023-04-01 20:37:59,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:37:59,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:37:59,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:37:59,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:37:59,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:37:59,816 INFO L87 Difference]: Start difference. First operand 101128 states and 125733 transitions. Second operand has 12 states, 12 states have (on average 106.16666666666667) internal successors, (1274), 10 states have internal predecessors, (1274), 4 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 20:38:10,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:38:10,506 INFO L93 Difference]: Finished difference Result 288685 states and 374594 transitions. [2023-04-01 20:38:10,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 20:38:10,507 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 106.16666666666667) internal successors, (1274), 10 states have internal predecessors, (1274), 4 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 1219 [2023-04-01 20:38:10,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:38:11,231 INFO L225 Difference]: With dead ends: 288685 [2023-04-01 20:38:11,231 INFO L226 Difference]: Without dead ends: 188397 [2023-04-01 20:38:11,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2470 GetRequests, 2450 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2023-04-01 20:38:11,327 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 8087 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 13778 mSolverCounterSat, 2754 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8097 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 16532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2754 IncrementalHoareTripleChecker+Valid, 13778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:38:11,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8097 Valid, 275 Invalid, 16532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2754 Valid, 13778 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-04-01 20:38:11,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188397 states. [2023-04-01 20:38:14,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188397 to 184920. [2023-04-01 20:38:14,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184920 states, 181829 states have (on average 1.108387550940719) internal successors, (201537), 182232 states have internal predecessors, (201537), 1154 states have call successors, (1154), 870 states have call predecessors, (1154), 1936 states have return successors, (32521), 1817 states have call predecessors, (32521), 1153 states have call successors, (32521) [2023-04-01 20:38:15,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184920 states to 184920 states and 235212 transitions. [2023-04-01 20:38:15,009 INFO L78 Accepts]: Start accepts. Automaton has 184920 states and 235212 transitions. Word has length 1219 [2023-04-01 20:38:15,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:38:15,022 INFO L495 AbstractCegarLoop]: Abstraction has 184920 states and 235212 transitions. [2023-04-01 20:38:15,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 106.16666666666667) internal successors, (1274), 10 states have internal predecessors, (1274), 4 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 20:38:15,023 INFO L276 IsEmpty]: Start isEmpty. Operand 184920 states and 235212 transitions. [2023-04-01 20:38:15,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1454 [2023-04-01 20:38:15,378 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:38:15,379 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:38:15,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-01 20:38:15,585 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 20:38:15,588 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:38:15,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:38:15,588 INFO L85 PathProgramCache]: Analyzing trace with hash -703677662, now seen corresponding path program 1 times [2023-04-01 20:38:15,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:38:15,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191046675] [2023-04-01 20:38:15,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:38:15,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:38:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:17,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:38:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:17,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:38:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:17,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-01 20:38:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:17,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:38:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:17,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:38:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:17,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 651 [2023-04-01 20:38:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:17,671 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 656 proven. 24 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-04-01 20:38:17,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:38:17,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191046675] [2023-04-01 20:38:17,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191046675] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:38:17,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978602821] [2023-04-01 20:38:17,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:38:17,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:38:17,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:38:17,672 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 20:38:17,674 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 20:38:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:18,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 1967 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 20:38:18,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:38:18,791 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 662 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-04-01 20:38:18,791 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:38:18,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978602821] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:38:18,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:38:18,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-04-01 20:38:18,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157591996] [2023-04-01 20:38:18,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:38:18,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:38:18,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:38:18,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:38:18,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 20:38:18,794 INFO L87 Difference]: Start difference. First operand 184920 states and 235212 transitions. Second operand has 3 states, 3 states have (on average 466.3333333333333) internal successors, (1399), 3 states have internal predecessors, (1399), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-01 20:38:23,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:38:23,297 INFO L93 Difference]: Finished difference Result 372358 states and 473341 transitions. [2023-04-01 20:38:23,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:38:23,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 466.3333333333333) internal successors, (1399), 3 states have internal predecessors, (1399), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 1453 [2023-04-01 20:38:23,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:38:24,045 INFO L225 Difference]: With dead ends: 372358 [2023-04-01 20:38:24,046 INFO L226 Difference]: Without dead ends: 188278 [2023-04-01 20:38:24,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1468 GetRequests, 1461 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 20:38:24,285 INFO L413 NwaCegarLoop]: 1439 mSDtfsCounter, 86 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 2662 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 3162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 2662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-01 20:38:24,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1472 Invalid, 3162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 2662 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-01 20:38:24,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188278 states. [2023-04-01 20:38:27,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188278 to 184905. [2023-04-01 20:38:27,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184905 states, 181819 states have (on average 1.0879831040760317) internal successors, (197816), 182220 states have internal predecessors, (197816), 1152 states have call successors, (1152), 870 states have call predecessors, (1152), 1933 states have return successors, (26159), 1814 states have call predecessors, (26159), 1151 states have call successors, (26159) [2023-04-01 20:38:27,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184905 states to 184905 states and 225127 transitions. [2023-04-01 20:38:27,739 INFO L78 Accepts]: Start accepts. Automaton has 184905 states and 225127 transitions. Word has length 1453 [2023-04-01 20:38:27,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:38:27,741 INFO L495 AbstractCegarLoop]: Abstraction has 184905 states and 225127 transitions. [2023-04-01 20:38:27,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 466.3333333333333) internal successors, (1399), 3 states have internal predecessors, (1399), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-01 20:38:27,741 INFO L276 IsEmpty]: Start isEmpty. Operand 184905 states and 225127 transitions. [2023-04-01 20:38:28,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1485 [2023-04-01 20:38:28,132 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:38:28,133 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:38:28,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-04-01 20:38:28,349 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 20:38:28,349 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:38:28,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:38:28,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1948384248, now seen corresponding path program 1 times [2023-04-01 20:38:28,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:38:28,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473497429] [2023-04-01 20:38:28,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:38:28,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:38:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:31,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:38:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:31,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:38:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:31,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:38:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:31,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-04-01 20:38:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:31,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2023-04-01 20:38:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:31,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2023-04-01 20:38:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:32,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2023-04-01 20:38:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:32,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1569 backedges. 684 proven. 448 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-04-01 20:38:32,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:38:32,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473497429] [2023-04-01 20:38:32,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473497429] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:38:32,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246292666] [2023-04-01 20:38:32,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:38:32,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:38:32,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:38:32,081 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 20:38:32,083 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 20:38:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:32,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 2083 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 20:38:32,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:38:33,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1569 backedges. 696 proven. 0 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2023-04-01 20:38:33,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:38:33,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246292666] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:38:33,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:38:33,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 20:38:33,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334466763] [2023-04-01 20:38:33,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:38:33,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:38:33,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:38:33,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:38:33,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:38:33,194 INFO L87 Difference]: Start difference. First operand 184905 states and 225127 transitions. Second operand has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 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 20:38:37,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:38:37,253 INFO L93 Difference]: Finished difference Result 371497 states and 452057 transitions. [2023-04-01 20:38:37,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:38:37,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 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 1484 [2023-04-01 20:38:37,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:38:37,847 INFO L225 Difference]: With dead ends: 371497 [2023-04-01 20:38:37,848 INFO L226 Difference]: Without dead ends: 187432 [2023-04-01 20:38:37,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1502 GetRequests, 1496 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 20:38:38,003 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 65 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 2677 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 3014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 2677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-01 20:38:38,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1577 Invalid, 3014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 2677 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-01 20:38:38,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187432 states. [2023-04-01 20:38:40,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187432 to 175653. [2023-04-01 20:38:41,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175653 states, 172679 states have (on average 1.0763729231695804) internal successors, (185867), 173074 states have internal predecessors, (185867), 1096 states have call successors, (1096), 826 states have call predecessors, (1096), 1877 states have return successors, (21778), 1752 states have call predecessors, (21778), 1095 states have call successors, (21778) [2023-04-01 20:38:41,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175653 states to 175653 states and 208741 transitions. [2023-04-01 20:38:41,353 INFO L78 Accepts]: Start accepts. Automaton has 175653 states and 208741 transitions. Word has length 1484 [2023-04-01 20:38:41,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:38:41,354 INFO L495 AbstractCegarLoop]: Abstraction has 175653 states and 208741 transitions. [2023-04-01 20:38:41,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 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 20:38:41,354 INFO L276 IsEmpty]: Start isEmpty. Operand 175653 states and 208741 transitions. [2023-04-01 20:38:41,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1543 [2023-04-01 20:38:41,741 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:38:41,742 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:38:41,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-04-01 20:38:41,948 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 20:38:41,948 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:38:41,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:38:41,949 INFO L85 PathProgramCache]: Analyzing trace with hash 673716158, now seen corresponding path program 1 times [2023-04-01 20:38:41,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:38:41,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179509252] [2023-04-01 20:38:41,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:38:41,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:38:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:44,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:38:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:44,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:38:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:44,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-01 20:38:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:44,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:38:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:44,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2023-04-01 20:38:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:44,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1182 backedges. 748 proven. 240 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-04-01 20:38:44,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:38:44,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179509252] [2023-04-01 20:38:44,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179509252] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:38:44,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439632164] [2023-04-01 20:38:44,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:38:44,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:38:44,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:38:44,739 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 20:38:44,741 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 20:38:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:38:45,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 2035 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:38:45,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:38:45,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1182 backedges. 998 proven. 2 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-04-01 20:38:45,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:38:46,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1182 backedges. 875 proven. 184 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-04-01 20:38:46,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439632164] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:38:46,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:38:46,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 20:38:46,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560791363] [2023-04-01 20:38:46,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:38:46,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 20:38:46,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:38:46,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 20:38:46,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:38:46,642 INFO L87 Difference]: Start difference. First operand 175653 states and 208741 transitions. Second operand has 11 states, 11 states have (on average 203.72727272727272) internal successors, (2241), 9 states have internal predecessors, (2241), 6 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) [2023-04-01 20:38:55,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:38:55,352 INFO L93 Difference]: Finished difference Result 315395 states and 369087 transitions. [2023-04-01 20:38:55,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 20:38:55,353 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 203.72727272727272) internal successors, (2241), 9 states have internal predecessors, (2241), 6 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) Word has length 1542 [2023-04-01 20:38:55,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:38:55,861 INFO L225 Difference]: With dead ends: 315395 [2023-04-01 20:38:55,861 INFO L226 Difference]: Without dead ends: 139743 [2023-04-01 20:38:55,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3123 GetRequests, 3098 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2023-04-01 20:38:55,985 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 8819 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 10413 mSolverCounterSat, 2497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8821 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 12910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2497 IncrementalHoareTripleChecker+Valid, 10413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-04-01 20:38:55,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8821 Valid, 257 Invalid, 12910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2497 Valid, 10413 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-04-01 20:38:56,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139743 states. [2023-04-01 20:38:57,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139743 to 133495. [2023-04-01 20:38:57,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133495 states, 130641 states have (on average 1.0665105135447523) internal successors, (139330), 131254 states have internal predecessors, (139330), 622 states have call successors, (622), 622 states have call predecessors, (622), 2231 states have return successors, (9318), 1618 states have call predecessors, (9318), 621 states have call successors, (9318) [2023-04-01 20:38:58,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133495 states to 133495 states and 149270 transitions. [2023-04-01 20:38:58,133 INFO L78 Accepts]: Start accepts. Automaton has 133495 states and 149270 transitions. Word has length 1542 [2023-04-01 20:38:58,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:38:58,134 INFO L495 AbstractCegarLoop]: Abstraction has 133495 states and 149270 transitions. [2023-04-01 20:38:58,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 203.72727272727272) internal successors, (2241), 9 states have internal predecessors, (2241), 6 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) [2023-04-01 20:38:58,134 INFO L276 IsEmpty]: Start isEmpty. Operand 133495 states and 149270 transitions. [2023-04-01 20:38:58,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1706 [2023-04-01 20:38:58,247 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:38:58,248 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:38:58,253 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 20:38:58,453 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 20:38:58,454 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:38:58,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:38:58,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1383564910, now seen corresponding path program 1 times [2023-04-01 20:38:58,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:38:58,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883317184] [2023-04-01 20:38:58,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:38:58,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:38:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:01,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:39:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:01,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:39:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:02,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:39:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:02,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-04-01 20:39:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:02,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:39:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:02,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 747 [2023-04-01 20:39:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:02,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 908 proven. 461 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-04-01 20:39:02,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:39:02,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883317184] [2023-04-01 20:39:02,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883317184] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:39:02,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276116277] [2023-04-01 20:39:02,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:39:02,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:39:02,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:39:02,426 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 20:39:02,428 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 20:39:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:02,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 2230 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:39:02,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:39:03,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 1377 proven. 5 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-04-01 20:39:03,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:39:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 1195 proven. 187 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-04-01 20:39:04,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276116277] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:39:04,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:39:04,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 20:39:04,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362004117] [2023-04-01 20:39:04,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:39:04,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 20:39:04,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:39:04,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 20:39:04,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:39:04,453 INFO L87 Difference]: Start difference. First operand 133495 states and 149270 transitions. Second operand has 11 states, 11 states have (on average 218.63636363636363) internal successors, (2405), 9 states have internal predecessors, (2405), 7 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) [2023-04-01 20:39:14,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:39:14,089 INFO L93 Difference]: Finished difference Result 270263 states and 302265 transitions. [2023-04-01 20:39:14,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-01 20:39:14,090 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 218.63636363636363) internal successors, (2405), 9 states have internal predecessors, (2405), 7 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) Word has length 1705 [2023-04-01 20:39:14,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:39:14,393 INFO L225 Difference]: With dead ends: 270263 [2023-04-01 20:39:14,394 INFO L226 Difference]: Without dead ends: 137608 [2023-04-01 20:39:14,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3476 GetRequests, 3439 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=277, Invalid=983, Unknown=0, NotChecked=0, Total=1260 [2023-04-01 20:39:14,489 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 8909 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 9832 mSolverCounterSat, 2989 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8909 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 12821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2989 IncrementalHoareTripleChecker+Valid, 9832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-04-01 20:39:14,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8909 Valid, 312 Invalid, 12821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2989 Valid, 9832 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-04-01 20:39:14,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137608 states. [2023-04-01 20:39:16,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137608 to 134724. [2023-04-01 20:39:16,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134724 states, 131712 states have (on average 1.0522124028182702) internal successors, (138589), 132380 states have internal predecessors, (138589), 626 states have call successors, (626), 626 states have call predecessors, (626), 2385 states have return successors, (7717), 1717 states have call predecessors, (7717), 625 states have call successors, (7717) [2023-04-01 20:39:16,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134724 states to 134724 states and 146932 transitions. [2023-04-01 20:39:16,789 INFO L78 Accepts]: Start accepts. Automaton has 134724 states and 146932 transitions. Word has length 1705 [2023-04-01 20:39:16,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:39:16,789 INFO L495 AbstractCegarLoop]: Abstraction has 134724 states and 146932 transitions. [2023-04-01 20:39:16,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 218.63636363636363) internal successors, (2405), 9 states have internal predecessors, (2405), 7 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) [2023-04-01 20:39:16,790 INFO L276 IsEmpty]: Start isEmpty. Operand 134724 states and 146932 transitions. [2023-04-01 20:39:17,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1770 [2023-04-01 20:39:17,085 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:39:17,085 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:39:17,094 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 20:39:17,292 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 20:39:17,293 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:39:17,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:39:17,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1155253418, now seen corresponding path program 1 times [2023-04-01 20:39:17,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:39:17,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858020766] [2023-04-01 20:39:17,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:39:17,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:39:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:19,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:39:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:19,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:39:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:19,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:39:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:19,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2023-04-01 20:39:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:19,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2023-04-01 20:39:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:19,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:39:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:19,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2023-04-01 20:39:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:19,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1835 backedges. 984 proven. 12 refuted. 0 times theorem prover too weak. 839 trivial. 0 not checked. [2023-04-01 20:39:19,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:39:19,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858020766] [2023-04-01 20:39:19,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858020766] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:39:19,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416863927] [2023-04-01 20:39:19,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:39:19,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:39:19,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:39:19,836 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 20:39:19,865 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 20:39:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:20,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 2345 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 20:39:20,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:39:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1835 backedges. 978 proven. 0 refuted. 0 times theorem prover too weak. 857 trivial. 0 not checked. [2023-04-01 20:39:21,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:39:21,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416863927] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:39:21,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:39:21,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2023-04-01 20:39:21,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384133546] [2023-04-01 20:39:21,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:39:21,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:39:21,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:39:21,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:39:21,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:39:21,031 INFO L87 Difference]: Start difference. First operand 134724 states and 146932 transitions. Second operand has 3 states, 3 states have (on average 409.0) internal successors, (1227), 3 states have internal predecessors, (1227), 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 20:39:24,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:39:24,148 INFO L93 Difference]: Finished difference Result 268586 states and 293019 transitions. [2023-04-01 20:39:24,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:39:24,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 409.0) internal successors, (1227), 3 states have internal predecessors, (1227), 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 1769 [2023-04-01 20:39:24,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:39:24,455 INFO L225 Difference]: With dead ends: 268586 [2023-04-01 20:39:24,455 INFO L226 Difference]: Without dead ends: 134702 [2023-04-01 20:39:24,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1793 GetRequests, 1788 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:39:24,744 INFO L413 NwaCegarLoop]: 1165 mSDtfsCounter, 191 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 2691 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 2969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 2691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-01 20:39:24,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 1198 Invalid, 2969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 2691 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-01 20:39:24,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134702 states. [2023-04-01 20:39:26,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134702 to 132895. [2023-04-01 20:39:26,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132895 states, 129960 states have (on average 1.0386426592797784) internal successors, (134982), 130606 states have internal predecessors, (134982), 618 states have call successors, (618), 618 states have call predecessors, (618), 2316 states have return successors, (5794), 1670 states have call predecessors, (5794), 617 states have call successors, (5794) [2023-04-01 20:39:26,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132895 states to 132895 states and 141394 transitions. [2023-04-01 20:39:26,526 INFO L78 Accepts]: Start accepts. Automaton has 132895 states and 141394 transitions. Word has length 1769 [2023-04-01 20:39:26,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:39:26,526 INFO L495 AbstractCegarLoop]: Abstraction has 132895 states and 141394 transitions. [2023-04-01 20:39:26,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.0) internal successors, (1227), 3 states have internal predecessors, (1227), 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 20:39:26,527 INFO L276 IsEmpty]: Start isEmpty. Operand 132895 states and 141394 transitions. [2023-04-01 20:39:27,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4600 [2023-04-01 20:39:27,199 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:39:27,207 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:39:27,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 20:39:27,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 20:39:27,414 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:39:27,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:39:27,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1109673080, now seen corresponding path program 1 times [2023-04-01 20:39:27,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:39:27,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529354805] [2023-04-01 20:39:27,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:39:27,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:39:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:37,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:39:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:37,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:39:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:37,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-01 20:39:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:37,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:39:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:37,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-04-01 20:39:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:37,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2023-04-01 20:39:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:37,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2023-04-01 20:39:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:37,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2023-04-01 20:39:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:37,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 735 [2023-04-01 20:39:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:37,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:39:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:37,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1054 [2023-04-01 20:39:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:37,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:39:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:37,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1395 [2023-04-01 20:39:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:37,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1612 [2023-04-01 20:39:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:38,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:39:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:38,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:39:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:38,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2071 [2023-04-01 20:39:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:38,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:39:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:38,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:39:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:38,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:39:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:38,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2771 [2023-04-01 20:39:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:38,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2878 [2023-04-01 20:39:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:38,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:39:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:38,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3136 [2023-04-01 20:39:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:38,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3350 [2023-04-01 20:39:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:38,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:39:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:38,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:39:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:38,736 INFO L134 CoverageAnalysis]: Checked inductivity of 19622 backedges. 4218 proven. 1747 refuted. 0 times theorem prover too weak. 13657 trivial. 0 not checked. [2023-04-01 20:39:38,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:39:38,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529354805] [2023-04-01 20:39:38,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529354805] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:39:38,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956699582] [2023-04-01 20:39:38,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:39:38,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:39:38,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:39:38,737 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:39:38,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 20:39:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:39,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 6029 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-01 20:39:39,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:39:45,507 INFO L134 CoverageAnalysis]: Checked inductivity of 19622 backedges. 5956 proven. 2 refuted. 0 times theorem prover too weak. 13664 trivial. 0 not checked. [2023-04-01 20:39:45,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:39:49,656 INFO L134 CoverageAnalysis]: Checked inductivity of 19622 backedges. 4213 proven. 1673 refuted. 0 times theorem prover too weak. 13736 trivial. 0 not checked. [2023-04-01 20:39:49,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956699582] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:39:49,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:39:49,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 8] total 18 [2023-04-01 20:39:49,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40019288] [2023-04-01 20:39:49,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:39:49,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-01 20:39:49,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:39:49,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-01 20:39:49,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-04-01 20:39:49,664 INFO L87 Difference]: Start difference. First operand 132895 states and 141394 transitions. Second operand has 18 states, 18 states have (on average 121.27777777777777) internal successors, (2183), 16 states have internal predecessors, (2183), 7 states have call successors, (24), 8 states have call predecessors, (24), 11 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2023-04-01 20:40:12,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:40:12,475 INFO L93 Difference]: Finished difference Result 273648 states and 291369 transitions. [2023-04-01 20:40:12,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-04-01 20:40:12,476 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 121.27777777777777) internal successors, (2183), 16 states have internal predecessors, (2183), 7 states have call successors, (24), 8 states have call predecessors, (24), 11 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) Word has length 4599 [2023-04-01 20:40:12,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:40:12,765 INFO L225 Difference]: With dead ends: 273648 [2023-04-01 20:40:12,765 INFO L226 Difference]: Without dead ends: 134579 [2023-04-01 20:40:12,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9350 GetRequests, 9287 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1271 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=870, Invalid=3290, Unknown=0, NotChecked=0, Total=4160 [2023-04-01 20:40:12,898 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 16735 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 35406 mSolverCounterSat, 4301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16743 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 39707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4301 IncrementalHoareTripleChecker+Valid, 35406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2023-04-01 20:40:12,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16743 Valid, 432 Invalid, 39707 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4301 Valid, 35406 Invalid, 0 Unknown, 0 Unchecked, 18.7s Time] [2023-04-01 20:40:12,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134579 states. [2023-04-01 20:40:14,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134579 to 125963. [2023-04-01 20:40:14,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125963 states, 123791 states have (on average 1.011632509633172) internal successors, (125231), 124220 states have internal predecessors, (125231), 594 states have call successors, (594), 594 states have call predecessors, (594), 1577 states have return successors, (3512), 1148 states have call predecessors, (3512), 593 states have call successors, (3512) [2023-04-01 20:40:14,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125963 states to 125963 states and 129337 transitions. [2023-04-01 20:40:14,554 INFO L78 Accepts]: Start accepts. Automaton has 125963 states and 129337 transitions. Word has length 4599 [2023-04-01 20:40:14,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:40:14,555 INFO L495 AbstractCegarLoop]: Abstraction has 125963 states and 129337 transitions. [2023-04-01 20:40:14,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 121.27777777777777) internal successors, (2183), 16 states have internal predecessors, (2183), 7 states have call successors, (24), 8 states have call predecessors, (24), 11 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2023-04-01 20:40:14,555 INFO L276 IsEmpty]: Start isEmpty. Operand 125963 states and 129337 transitions. [2023-04-01 20:40:14,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4600 [2023-04-01 20:40:14,792 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:40:14,794 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:40:14,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-01 20:40:15,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-01 20:40:15,006 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:40:15,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:40:15,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2121137766, now seen corresponding path program 1 times [2023-04-01 20:40:15,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:40:15,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246853500] [2023-04-01 20:40:15,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:40:15,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms