/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_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 20:39:03,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 20:39:03,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 20:39:03,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 20:39:03,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 20:39:03,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 20:39:03,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 20:39:03,909 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 20:39:03,922 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 20:39:03,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 20:39:03,922 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 20:39:03,922 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 20:39:03,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 20:39:03,923 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 20:39:03,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 20:39:03,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 20:39:03,924 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 20:39:03,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 20:39:03,924 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 20:39:03,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 20:39:03,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 20:39:03,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 20:39:03,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 20:39:03,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 20:39:03,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 20:39:03,928 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 20:39:03,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 20:39:03,928 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 20:39:03,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 20:39:03,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 20:39:03,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 20:39:03,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 20:39:03,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:39:03,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 20:39:03,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 20:39:03,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 20:39:03,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 20:39:03,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 20:39:03,930 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 20:39:03,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 20:39:03,930 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 20:39:03,930 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 20:39:03,930 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 20:39:03,930 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 20:39:04,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 20:39:04,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 20:39:04,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 20:39:04,146 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 20:39:04,147 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 20:39:04,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem04_label17.c [2023-04-01 20:39:05,205 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 20:39:05,528 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 20:39:05,529 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label17.c [2023-04-01 20:39:05,553 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fae99947/56ecbf3f32a54fdc930e74ea3fa98d52/FLAGafd8ddbbe [2023-04-01 20:39:05,567 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fae99947/56ecbf3f32a54fdc930e74ea3fa98d52 [2023-04-01 20:39:05,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 20:39:05,571 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 20:39:05,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 20:39:05,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 20:39:05,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 20:39:05,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:39:05" (1/1) ... [2023-04-01 20:39:05,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c52fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:05, skipping insertion in model container [2023-04-01 20:39:05,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:39:05" (1/1) ... [2023-04-01 20:39:05,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 20:39:05,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 20:39:06,372 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_label17.c[178418,178431] [2023-04-01 20:39:06,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:39:06,398 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 20:39:06,679 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_label17.c[178418,178431] [2023-04-01 20:39:06,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:39:06,703 INFO L208 MainTranslator]: Completed translation [2023-04-01 20:39:06,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:06 WrapperNode [2023-04-01 20:39:06,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 20:39:06,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 20:39:06,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 20:39:06,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 20:39:06,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:06" (1/1) ... [2023-04-01 20:39:06,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:06" (1/1) ... [2023-04-01 20:39:06,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:06" (1/1) ... [2023-04-01 20:39:06,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:06" (1/1) ... [2023-04-01 20:39:06,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:06" (1/1) ... [2023-04-01 20:39:06,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:06" (1/1) ... [2023-04-01 20:39:06,884 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:06" (1/1) ... [2023-04-01 20:39:06,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:06" (1/1) ... [2023-04-01 20:39:06,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 20:39:06,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 20:39:06,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 20:39:06,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 20:39:06,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:06" (1/1) ... [2023-04-01 20:39:06,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:39:06,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:39:06,943 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 20:39:06,948 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 20:39:06,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 20:39:06,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 20:39:06,970 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 20:39:06,970 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 20:39:06,970 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 20:39:06,971 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 20:39:06,971 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 20:39:06,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 20:39:06,971 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 20:39:06,971 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 20:39:06,971 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 20:39:06,971 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 20:39:06,971 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 20:39:06,971 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 20:39:06,971 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 20:39:06,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 20:39:06,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 20:39:06,971 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 20:39:06,971 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 20:39:06,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 20:39:06,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 20:39:06,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 20:39:06,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 20:39:06,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 20:39:06,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 20:39:07,039 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 20:39:07,041 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 20:39:09,769 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 20:39:09,778 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 20:39:09,779 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 20:39:09,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:39:09 BoogieIcfgContainer [2023-04-01 20:39:09,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 20:39:09,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 20:39:09,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 20:39:09,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 20:39:09,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 08:39:05" (1/3) ... [2023-04-01 20:39:09,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669ac193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:39:09, skipping insertion in model container [2023-04-01 20:39:09,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:39:06" (2/3) ... [2023-04-01 20:39:09,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669ac193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:39:09, skipping insertion in model container [2023-04-01 20:39:09,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:39:09" (3/3) ... [2023-04-01 20:39:09,786 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label17.c [2023-04-01 20:39:09,797 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 20:39:09,797 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 20:39:09,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 20:39:09,840 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;@6cf961ae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 20:39:09,840 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 20:39:09,846 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 20:39:09,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2023-04-01 20:39:09,870 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:39:09,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 20:39:09,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:39:09,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:39:09,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1238264499, now seen corresponding path program 1 times [2023-04-01 20:39:09,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:39:09,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811863051] [2023-04-01 20:39:09,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:39:09,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:39:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:13,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:39:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:13,071 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 20:39:13,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:39:13,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811863051] [2023-04-01 20:39:13,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811863051] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:39:13,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:39:13,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 20:39:13,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014745118] [2023-04-01 20:39:13,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:39:13,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:39:13,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:39:13,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:39:13,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 20:39:13,121 INFO L87 Difference]: Start difference. First operand has 906 states, 892 states have (on average 1.913677130044843) internal successors, (1707), 893 states have internal predecessors, (1707), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 4 states have (on average 194.0) internal successors, (776), 3 states have internal predecessors, (776), 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 20:39:19,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:39:19,294 INFO L93 Difference]: Finished difference Result 3521 states and 6827 transitions. [2023-04-01 20:39:19,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 20:39:19,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 194.0) internal successors, (776), 3 states have internal predecessors, (776), 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 783 [2023-04-01 20:39:19,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:39:19,341 INFO L225 Difference]: With dead ends: 3521 [2023-04-01 20:39:19,342 INFO L226 Difference]: Without dead ends: 2547 [2023-04-01 20:39:19,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:39:19,366 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 3798 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 4399 mSolverCounterSat, 2019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3798 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 6418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2019 IncrementalHoareTripleChecker+Valid, 4399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-04-01 20:39:19,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3798 Valid, 55 Invalid, 6418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2019 Valid, 4399 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-04-01 20:39:19,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2023-04-01 20:39:19,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2534. [2023-04-01 20:39:19,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2534 states, 2497 states have (on average 1.6275530636764117) internal successors, (4064), 2500 states have internal predecessors, (4064), 14 states have call successors, (14), 14 states have call predecessors, (14), 22 states have return successors, (50), 19 states have call predecessors, (50), 13 states have call successors, (50) [2023-04-01 20:39:19,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 4128 transitions. [2023-04-01 20:39:19,607 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 4128 transitions. Word has length 783 [2023-04-01 20:39:19,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:39:19,610 INFO L495 AbstractCegarLoop]: Abstraction has 2534 states and 4128 transitions. [2023-04-01 20:39:19,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 194.0) internal successors, (776), 3 states have internal predecessors, (776), 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 20:39:19,610 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 4128 transitions. [2023-04-01 20:39:19,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2023-04-01 20:39:19,627 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:39:19,627 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:39:19,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 20:39:19,649 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:39:19,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:39:19,650 INFO L85 PathProgramCache]: Analyzing trace with hash -937728223, now seen corresponding path program 1 times [2023-04-01 20:39:19,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:39:19,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868393356] [2023-04-01 20:39:19,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:39:19,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:39:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:20,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:39:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:20,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:39:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:20,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-01 20:39:20,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:20,670 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 67 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 20:39:20,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:39:20,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868393356] [2023-04-01 20:39:20,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868393356] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:39:20,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535276020] [2023-04-01 20:39:20,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:39:20,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:39:20,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:39:20,686 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 20:39:20,708 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 20:39:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:20,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:39:20,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:39:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-04-01 20:39:21,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:39:21,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535276020] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:39:21,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:39:21,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-04-01 20:39:21,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600674419] [2023-04-01 20:39:21,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:39:21,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:39:21,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:39:21,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:39:21,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-04-01 20:39:21,213 INFO L87 Difference]: Start difference. First operand 2534 states and 4128 transitions. Second operand has 5 states, 5 states have (on average 158.2) internal successors, (791), 4 states have internal predecessors, (791), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:39:23,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:39:23,641 INFO L93 Difference]: Finished difference Result 7687 states and 12697 transitions. [2023-04-01 20:39:23,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 20:39:23,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 158.2) internal successors, (791), 4 states have internal predecessors, (791), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 856 [2023-04-01 20:39:23,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:39:23,673 INFO L225 Difference]: With dead ends: 7687 [2023-04-01 20:39:23,674 INFO L226 Difference]: Without dead ends: 5159 [2023-04-01 20:39:23,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 857 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:39:23,681 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 2615 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 5095 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2615 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 5708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 5095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:39:23,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2615 Valid, 134 Invalid, 5708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 5095 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-01 20:39:23,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5159 states. [2023-04-01 20:39:23,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5159 to 5111. [2023-04-01 20:39:23,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5111 states, 5022 states have (on average 1.5975706889685384) internal successors, (8023), 5034 states have internal predecessors, (8023), 26 states have call successors, (26), 26 states have call predecessors, (26), 62 states have return successors, (222), 50 states have call predecessors, (222), 25 states have call successors, (222) [2023-04-01 20:39:23,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5111 states to 5111 states and 8271 transitions. [2023-04-01 20:39:23,794 INFO L78 Accepts]: Start accepts. Automaton has 5111 states and 8271 transitions. Word has length 856 [2023-04-01 20:39:23,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:39:23,795 INFO L495 AbstractCegarLoop]: Abstraction has 5111 states and 8271 transitions. [2023-04-01 20:39:23,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.2) internal successors, (791), 4 states have internal predecessors, (791), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:39:23,795 INFO L276 IsEmpty]: Start isEmpty. Operand 5111 states and 8271 transitions. [2023-04-01 20:39:23,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2023-04-01 20:39:23,818 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:39:23,818 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:39:23,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 20:39:24,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:39:24,041 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:39:24,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:39:24,042 INFO L85 PathProgramCache]: Analyzing trace with hash 767697035, now seen corresponding path program 1 times [2023-04-01 20:39:24,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:39:24,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082826481] [2023-04-01 20:39:24,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:39:24,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:39:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:25,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:39:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:25,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:39:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:25,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-01 20:39:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:25,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-01 20:39:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:25,706 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 140 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-04-01 20:39:25,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:39:25,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082826481] [2023-04-01 20:39:25,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082826481] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:39:25,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834656476] [2023-04-01 20:39:25,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:39:25,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:39:25,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:39:25,717 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 20:39:25,718 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 20:39:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:26,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:39:26,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:39:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-04-01 20:39:26,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:39:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 150 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 20:39:26,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834656476] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:39:26,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:39:26,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2023-04-01 20:39:26,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502758733] [2023-04-01 20:39:26,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:39:26,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:39:26,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:39:26,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:39:26,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:39:26,232 INFO L87 Difference]: Start difference. First operand 5111 states and 8271 transitions. Second operand has 12 states, 12 states have (on average 78.0) internal successors, (936), 10 states have internal predecessors, (936), 4 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 20:39:39,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:39:39,048 INFO L93 Difference]: Finished difference Result 30197 states and 52285 transitions. [2023-04-01 20:39:39,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-04-01 20:39:39,049 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 78.0) internal successors, (936), 10 states have internal predecessors, (936), 4 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 932 [2023-04-01 20:39:39,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:39:39,151 INFO L225 Difference]: With dead ends: 30197 [2023-04-01 20:39:39,151 INFO L226 Difference]: Without dead ends: 25092 [2023-04-01 20:39:39,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1921 GetRequests, 1886 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=266, Invalid=924, Unknown=0, NotChecked=0, Total=1190 [2023-04-01 20:39:39,170 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 5783 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 16826 mSolverCounterSat, 5244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5793 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 22070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5244 IncrementalHoareTripleChecker+Valid, 16826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2023-04-01 20:39:39,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5793 Valid, 346 Invalid, 22070 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5244 Valid, 16826 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2023-04-01 20:39:39,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25092 states. [2023-04-01 20:39:39,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25092 to 21487. [2023-04-01 20:39:39,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21487 states, 21046 states have (on average 1.2770122588615413) internal successors, (26876), 21129 states have internal predecessors, (26876), 103 states have call successors, (103), 102 states have call predecessors, (103), 337 states have return successors, (2033), 255 states have call predecessors, (2033), 102 states have call successors, (2033) [2023-04-01 20:39:39,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21487 states to 21487 states and 29012 transitions. [2023-04-01 20:39:39,692 INFO L78 Accepts]: Start accepts. Automaton has 21487 states and 29012 transitions. Word has length 932 [2023-04-01 20:39:39,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:39:39,693 INFO L495 AbstractCegarLoop]: Abstraction has 21487 states and 29012 transitions. [2023-04-01 20:39:39,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 78.0) internal successors, (936), 10 states have internal predecessors, (936), 4 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 20:39:39,694 INFO L276 IsEmpty]: Start isEmpty. Operand 21487 states and 29012 transitions. [2023-04-01 20:39:39,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 940 [2023-04-01 20:39:39,737 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:39:39,737 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:39:39,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 20:39:39,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-04-01 20:39:39,944 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:39:39,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:39:39,945 INFO L85 PathProgramCache]: Analyzing trace with hash 554064057, now seen corresponding path program 1 times [2023-04-01 20:39:39,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:39:39,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399699938] [2023-04-01 20:39:39,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:39:39,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:39:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:40,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:39:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:40,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:39:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:41,089 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:39:41,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:39:41,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399699938] [2023-04-01 20:39:41,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399699938] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:39:41,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:39:41,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 20:39:41,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142497577] [2023-04-01 20:39:41,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:39:41,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 20:39:41,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:39:41,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 20:39:41,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:39:41,097 INFO L87 Difference]: Start difference. First operand 21487 states and 29012 transitions. Second operand has 7 states, 6 states have (on average 155.0) internal successors, (930), 4 states have internal predecessors, (930), 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 20:39:45,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:39:45,752 INFO L93 Difference]: Finished difference Result 57475 states and 80066 transitions. [2023-04-01 20:39:45,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 20:39:45,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 155.0) internal successors, (930), 4 states have internal predecessors, (930), 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 939 [2023-04-01 20:39:45,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:39:45,830 INFO L225 Difference]: With dead ends: 57475 [2023-04-01 20:39:45,830 INFO L226 Difference]: Without dead ends: 35998 [2023-04-01 20:39:45,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:39:45,901 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 5150 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4853 mSolverCounterSat, 1589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5150 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 6442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1589 IncrementalHoareTripleChecker+Valid, 4853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-04-01 20:39:45,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5150 Valid, 97 Invalid, 6442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1589 Valid, 4853 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-04-01 20:39:45,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35998 states. [2023-04-01 20:39:46,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35998 to 28401. [2023-04-01 20:39:46,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28401 states, 27805 states have (on average 1.2371515914403883) internal successors, (34399), 27919 states have internal predecessors, (34399), 135 states have call successors, (135), 134 states have call predecessors, (135), 460 states have return successors, (2944), 347 states have call predecessors, (2944), 134 states have call successors, (2944) [2023-04-01 20:39:46,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28401 states to 28401 states and 37478 transitions. [2023-04-01 20:39:46,463 INFO L78 Accepts]: Start accepts. Automaton has 28401 states and 37478 transitions. Word has length 939 [2023-04-01 20:39:46,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:39:46,463 INFO L495 AbstractCegarLoop]: Abstraction has 28401 states and 37478 transitions. [2023-04-01 20:39:46,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 155.0) internal successors, (930), 4 states have internal predecessors, (930), 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 20:39:46,464 INFO L276 IsEmpty]: Start isEmpty. Operand 28401 states and 37478 transitions. [2023-04-01 20:39:46,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1042 [2023-04-01 20:39:46,514 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:39:46,514 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 20:39:46,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 20:39:46,514 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:39:46,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:39:46,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1529333565, now seen corresponding path program 1 times [2023-04-01 20:39:46,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:39:46,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774793483] [2023-04-01 20:39:46,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:39:46,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:39:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:48,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:39:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:48,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:39:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:48,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-04-01 20:39:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:48,640 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 252 proven. 120 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 20:39:48,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:39:48,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774793483] [2023-04-01 20:39:48,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774793483] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:39:48,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934182514] [2023-04-01 20:39:48,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:39:48,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:39:48,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:39:48,642 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 20:39:48,645 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 20:39:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:39:48,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:39:48,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:39:49,129 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 375 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:39:49,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:39:49,454 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 375 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:39:49,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934182514] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:39:49,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:39:49,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 20:39:49,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47402359] [2023-04-01 20:39:49,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:39:49,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:39:49,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:39:49,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:39:49,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:39:49,458 INFO L87 Difference]: Start difference. First operand 28401 states and 37478 transitions. Second operand has 12 states, 12 states have (on average 107.83333333333333) internal successors, (1294), 10 states have internal predecessors, (1294), 4 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 20:39:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:39:58,199 INFO L93 Difference]: Finished difference Result 75673 states and 105853 transitions. [2023-04-01 20:39:58,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-01 20:39:58,200 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 107.83333333333333) internal successors, (1294), 10 states have internal predecessors, (1294), 4 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 1041 [2023-04-01 20:39:58,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:39:58,345 INFO L225 Difference]: With dead ends: 75673 [2023-04-01 20:39:58,346 INFO L226 Difference]: Without dead ends: 49784 [2023-04-01 20:39:58,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2139 GetRequests, 2104 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=996, Unknown=0, NotChecked=0, Total=1260 [2023-04-01 20:39:58,390 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 13873 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 9014 mSolverCounterSat, 5442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13873 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 14456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5442 IncrementalHoareTripleChecker+Valid, 9014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-04-01 20:39:58,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13873 Valid, 461 Invalid, 14456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5442 Valid, 9014 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-04-01 20:39:58,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49784 states. [2023-04-01 20:39:59,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49784 to 47964. [2023-04-01 20:39:59,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47964 states, 47037 states have (on average 1.220613559538236) internal successors, (57414), 47211 states have internal predecessors, (57414), 227 states have call successors, (227), 226 states have call predecessors, (227), 699 states have return successors, (6330), 526 states have call predecessors, (6330), 226 states have call successors, (6330) [2023-04-01 20:39:59,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47964 states to 47964 states and 63971 transitions. [2023-04-01 20:39:59,224 INFO L78 Accepts]: Start accepts. Automaton has 47964 states and 63971 transitions. Word has length 1041 [2023-04-01 20:39:59,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:39:59,224 INFO L495 AbstractCegarLoop]: Abstraction has 47964 states and 63971 transitions. [2023-04-01 20:39:59,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 107.83333333333333) internal successors, (1294), 10 states have internal predecessors, (1294), 4 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 20:39:59,224 INFO L276 IsEmpty]: Start isEmpty. Operand 47964 states and 63971 transitions. [2023-04-01 20:39:59,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2023-04-01 20:39:59,285 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:39:59,286 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:39:59,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 20:39:59,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:39:59,492 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:39:59,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:39:59,493 INFO L85 PathProgramCache]: Analyzing trace with hash 2082621063, now seen corresponding path program 1 times [2023-04-01 20:39:59,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:39:59,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12057414] [2023-04-01 20:39:59,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:39:59,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:39:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:01,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:40:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:01,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:40:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:01,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:40:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:01,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:40:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:01,435 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 278 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 20:40:01,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:40:01,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12057414] [2023-04-01 20:40:01,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12057414] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:40:01,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323991631] [2023-04-01 20:40:01,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:40:01,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:40:01,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:40:01,445 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 20:40:01,445 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 20:40:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:01,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 20:40:01,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:40:02,539 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 281 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 20:40:02,539 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:40:02,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323991631] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:40:02,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:40:02,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 20:40:02,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370268958] [2023-04-01 20:40:02,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:40:02,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:40:02,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:40:02,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:40:02,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 20:40:02,542 INFO L87 Difference]: Start difference. First operand 47964 states and 63971 transitions. Second operand has 3 states, 3 states have (on average 347.6666666666667) internal successors, (1043), 3 states have internal predecessors, (1043), 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 20:40:05,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:40:05,264 INFO L93 Difference]: Finished difference Result 109457 states and 149053 transitions. [2023-04-01 20:40:05,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:40:05,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 347.6666666666667) internal successors, (1043), 3 states have internal predecessors, (1043), 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 1070 [2023-04-01 20:40:05,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:40:05,496 INFO L225 Difference]: With dead ends: 109457 [2023-04-01 20:40:05,497 INFO L226 Difference]: Without dead ends: 64839 [2023-04-01 20:40:05,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1086 GetRequests, 1082 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 20:40:05,671 INFO L413 NwaCegarLoop]: 1310 mSDtfsCounter, 89 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 3029 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 3337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 3029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-01 20:40:05,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 1343 Invalid, 3337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 3029 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-01 20:40:05,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64839 states. [2023-04-01 20:40:06,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64839 to 63155. [2023-04-01 20:40:06,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63155 states, 62014 states have (on average 1.2100654690876254) internal successors, (75041), 62219 states have internal predecessors, (75041), 299 states have call successors, (299), 298 states have call predecessors, (299), 841 states have return successors, (8444), 637 states have call predecessors, (8444), 298 states have call successors, (8444) [2023-04-01 20:40:06,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63155 states to 63155 states and 83784 transitions. [2023-04-01 20:40:06,780 INFO L78 Accepts]: Start accepts. Automaton has 63155 states and 83784 transitions. Word has length 1070 [2023-04-01 20:40:06,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:40:06,781 INFO L495 AbstractCegarLoop]: Abstraction has 63155 states and 83784 transitions. [2023-04-01 20:40:06,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 347.6666666666667) internal successors, (1043), 3 states have internal predecessors, (1043), 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 20:40:06,781 INFO L276 IsEmpty]: Start isEmpty. Operand 63155 states and 83784 transitions. [2023-04-01 20:40:06,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1098 [2023-04-01 20:40:06,824 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:40:06,825 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:06,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-01 20:40:07,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:40:07,031 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:40:07,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:40:07,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1092272837, now seen corresponding path program 1 times [2023-04-01 20:40:07,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:40:07,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319297386] [2023-04-01 20:40:07,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:40:07,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:40:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:08,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:40:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:08,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:40:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:08,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-01 20:40:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:08,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-04-01 20:40:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:08,195 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 305 proven. 136 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-04-01 20:40:08,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:40:08,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319297386] [2023-04-01 20:40:08,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319297386] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:40:08,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613225349] [2023-04-01 20:40:08,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:40:08,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:40:08,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:40:08,197 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 20:40:08,236 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 20:40:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:08,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 1554 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:40:08,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:40:08,640 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2023-04-01 20:40:08,640 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:40:08,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613225349] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:40:08,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:40:08,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-04-01 20:40:08,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975993866] [2023-04-01 20:40:08,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:40:08,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:40:08,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:40:08,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:40:08,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-04-01 20:40:08,643 INFO L87 Difference]: Start difference. First operand 63155 states and 83784 transitions. Second operand has 5 states, 5 states have (on average 170.0) internal successors, (850), 4 states have internal predecessors, (850), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:40:12,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:40:12,541 INFO L93 Difference]: Finished difference Result 163528 states and 221696 transitions. [2023-04-01 20:40:12,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 20:40:12,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 170.0) internal successors, (850), 4 states have internal predecessors, (850), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 1097 [2023-04-01 20:40:12,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:40:12,868 INFO L225 Difference]: With dead ends: 163528 [2023-04-01 20:40:12,868 INFO L226 Difference]: Without dead ends: 100383 [2023-04-01 20:40:12,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1111 GetRequests, 1100 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:40:12,917 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 2928 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4112 mSolverCounterSat, 2066 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2928 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 6178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2066 IncrementalHoareTripleChecker+Valid, 4112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-01 20:40:12,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2928 Valid, 114 Invalid, 6178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2066 Valid, 4112 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-01 20:40:13,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100383 states. [2023-04-01 20:40:14,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100383 to 92688. [2023-04-01 20:40:14,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92688 states, 91132 states have (on average 1.194926041346618) internal successors, (108896), 91399 states have internal predecessors, (108896), 439 states have call successors, (439), 438 states have call predecessors, (439), 1116 states have return successors, (13180), 850 states have call predecessors, (13180), 438 states have call successors, (13180) [2023-04-01 20:40:14,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92688 states to 92688 states and 122515 transitions. [2023-04-01 20:40:14,950 INFO L78 Accepts]: Start accepts. Automaton has 92688 states and 122515 transitions. Word has length 1097 [2023-04-01 20:40:14,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:40:14,951 INFO L495 AbstractCegarLoop]: Abstraction has 92688 states and 122515 transitions. [2023-04-01 20:40:14,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.0) internal successors, (850), 4 states have internal predecessors, (850), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 20:40:14,951 INFO L276 IsEmpty]: Start isEmpty. Operand 92688 states and 122515 transitions. [2023-04-01 20:40:15,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1098 [2023-04-01 20:40:15,007 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:40:15,008 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:15,031 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 20:40:15,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:40:15,214 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:40:15,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:40:15,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1976273197, now seen corresponding path program 1 times [2023-04-01 20:40:15,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:40:15,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769788006] [2023-04-01 20:40:15,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:40:15,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:40:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:17,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:40:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:17,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:40:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:17,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-01 20:40:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:17,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:40:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 296 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-04-01 20:40:17,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:40:17,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769788006] [2023-04-01 20:40:17,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769788006] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:40:17,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32908197] [2023-04-01 20:40:17,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:40:17,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:40:17,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:40:17,550 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 20:40:17,552 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 20:40:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:17,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 1533 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 20:40:17,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:40:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-01 20:40:18,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:40:18,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32908197] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:40:18,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:40:18,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2023-04-01 20:40:18,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129269244] [2023-04-01 20:40:18,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:40:18,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:40:18,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:40:18,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:40:18,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:40:18,590 INFO L87 Difference]: Start difference. First operand 92688 states and 122515 transitions. Second operand has 3 states, 3 states have (on average 354.3333333333333) internal successors, (1063), 3 states have internal predecessors, (1063), 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 20:40:21,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:40:21,259 INFO L93 Difference]: Finished difference Result 182022 states and 241447 transitions. [2023-04-01 20:40:21,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:40:21,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 354.3333333333333) internal successors, (1063), 3 states have internal predecessors, (1063), 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 1097 [2023-04-01 20:40:21,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:40:21,486 INFO L225 Difference]: With dead ends: 182022 [2023-04-01 20:40:21,486 INFO L226 Difference]: Without dead ends: 92680 [2023-04-01 20:40:21,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1116 GetRequests, 1111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:40:21,570 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 173 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 2790 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 3015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 2790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-01 20:40:21,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 233 Invalid, 3015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 2790 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-01 20:40:21,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92680 states. [2023-04-01 20:40:22,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92680 to 88496. [2023-04-01 20:40:22,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88496 states, 86988 states have (on average 1.1552857865452706) internal successors, (100496), 87253 states have internal predecessors, (100496), 419 states have call successors, (419), 418 states have call predecessors, (419), 1088 states have return successors, (10728), 824 states have call predecessors, (10728), 418 states have call successors, (10728) [2023-04-01 20:40:23,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88496 states to 88496 states and 111643 transitions. [2023-04-01 20:40:23,142 INFO L78 Accepts]: Start accepts. Automaton has 88496 states and 111643 transitions. Word has length 1097 [2023-04-01 20:40:23,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:40:23,143 INFO L495 AbstractCegarLoop]: Abstraction has 88496 states and 111643 transitions. [2023-04-01 20:40:23,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 354.3333333333333) internal successors, (1063), 3 states have internal predecessors, (1063), 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 20:40:23,143 INFO L276 IsEmpty]: Start isEmpty. Operand 88496 states and 111643 transitions. [2023-04-01 20:40:23,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1565 [2023-04-01 20:40:23,257 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:40:23,258 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:40:23,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 20:40:23,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:40:23,461 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:40:23,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:40:23,462 INFO L85 PathProgramCache]: Analyzing trace with hash 589529401, now seen corresponding path program 1 times [2023-04-01 20:40:23,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:40:23,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678038141] [2023-04-01 20:40:23,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:40:23,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:40:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:25,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:40:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:25,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:40:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:25,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:40:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:26,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-01 20:40:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:26,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-04-01 20:40:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:26,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-04-01 20:40:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:26,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:40:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:26,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:40:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1294 backedges. 785 proven. 210 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2023-04-01 20:40:26,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:40:26,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678038141] [2023-04-01 20:40:26,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678038141] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:40:26,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598021515] [2023-04-01 20:40:26,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:40:26,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:40:26,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:40:26,299 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 20:40:26,300 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 20:40:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:26,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 2194 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:40:26,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:40:26,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1294 backedges. 371 proven. 2 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2023-04-01 20:40:26,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:40:27,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1294 backedges. 789 proven. 210 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2023-04-01 20:40:27,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598021515] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:40:27,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:40:27,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2023-04-01 20:40:27,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719871339] [2023-04-01 20:40:27,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:40:27,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 20:40:27,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:40:27,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 20:40:27,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:40:27,065 INFO L87 Difference]: Start difference. First operand 88496 states and 111643 transitions. Second operand has 13 states, 13 states have (on average 116.38461538461539) internal successors, (1513), 11 states have internal predecessors, (1513), 5 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-01 20:40:48,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:40:48,802 INFO L93 Difference]: Finished difference Result 309369 states and 401987 transitions. [2023-04-01 20:40:48,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-04-01 20:40:48,803 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 116.38461538461539) internal successors, (1513), 11 states have internal predecessors, (1513), 5 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 1564 [2023-04-01 20:40:48,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:40:49,472 INFO L225 Difference]: With dead ends: 309369 [2023-04-01 20:40:49,472 INFO L226 Difference]: Without dead ends: 220883 [2023-04-01 20:40:49,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3205 GetRequests, 3165 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=353, Invalid=1287, Unknown=0, NotChecked=0, Total=1640 [2023-04-01 20:40:49,556 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 10423 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 34958 mSolverCounterSat, 7743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10431 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 42701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7743 IncrementalHoareTripleChecker+Valid, 34958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2023-04-01 20:40:49,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10431 Valid, 393 Invalid, 42701 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7743 Valid, 34958 Invalid, 0 Unknown, 0 Unchecked, 18.2s Time] [2023-04-01 20:40:49,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220883 states. [2023-04-01 20:40:52,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220883 to 217396. [2023-04-01 20:40:53,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217396 states, 213368 states have (on average 1.1258764200817368) internal successors, (240226), 214063 states have internal predecessors, (240226), 1289 states have call successors, (1289), 1018 states have call predecessors, (1289), 2738 states have return successors, (33287), 2314 states have call predecessors, (33287), 1288 states have call successors, (33287) [2023-04-01 20:40:53,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217396 states to 217396 states and 274802 transitions. [2023-04-01 20:40:53,817 INFO L78 Accepts]: Start accepts. Automaton has 217396 states and 274802 transitions. Word has length 1564 [2023-04-01 20:40:53,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:40:53,817 INFO L495 AbstractCegarLoop]: Abstraction has 217396 states and 274802 transitions. [2023-04-01 20:40:53,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 116.38461538461539) internal successors, (1513), 11 states have internal predecessors, (1513), 5 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-01 20:40:53,818 INFO L276 IsEmpty]: Start isEmpty. Operand 217396 states and 274802 transitions. [2023-04-01 20:40:54,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1617 [2023-04-01 20:40:54,122 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:40:54,123 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:40:54,147 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 20:40:54,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:40:54,331 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:40:54,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:40:54,332 INFO L85 PathProgramCache]: Analyzing trace with hash 889131345, now seen corresponding path program 1 times [2023-04-01 20:40:54,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:40:54,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192121256] [2023-04-01 20:40:54,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:40:54,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:40:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:56,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:40:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:56,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:40:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:56,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:40:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:56,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-01 20:40:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:56,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-04-01 20:40:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:56,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-04-01 20:40:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:57,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:40:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:57,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:40:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:57,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1433 backedges. 951 proven. 178 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-04-01 20:40:57,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:40:57,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192121256] [2023-04-01 20:40:57,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192121256] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:40:57,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796559106] [2023-04-01 20:40:57,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:40:57,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:40:57,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:40:57,131 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 20:40:57,133 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 20:40:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:40:57,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 2245 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:40:57,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:40:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1433 backedges. 776 proven. 2 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2023-04-01 20:40:57,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:40:58,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1433 backedges. 956 proven. 174 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2023-04-01 20:40:58,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796559106] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:40:58,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:40:58,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2023-04-01 20:40:58,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787287620] [2023-04-01 20:40:58,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:40:58,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 20:40:58,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:40:58,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 20:40:58,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-04-01 20:40:58,059 INFO L87 Difference]: Start difference. First operand 217396 states and 274802 transitions. Second operand has 13 states, 13 states have (on average 124.46153846153847) internal successors, (1618), 11 states have internal predecessors, (1618), 5 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-04-01 20:41:17,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:41:17,703 INFO L93 Difference]: Finished difference Result 512716 states and 649924 transitions. [2023-04-01 20:41:17,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-01 20:41:17,704 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 124.46153846153847) internal successors, (1618), 11 states have internal predecessors, (1618), 5 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 1616 [2023-04-01 20:41:17,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:41:18,611 INFO L225 Difference]: With dead ends: 512716 [2023-04-01 20:41:18,611 INFO L226 Difference]: Without dead ends: 293646 [2023-04-01 20:41:18,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3300 GetRequests, 3264 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=296, Invalid=1036, Unknown=0, NotChecked=0, Total=1332 [2023-04-01 20:41:18,869 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 12772 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 24486 mSolverCounterSat, 5409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12779 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 29895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5409 IncrementalHoareTripleChecker+Valid, 24486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2023-04-01 20:41:18,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12779 Valid, 351 Invalid, 29895 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5409 Valid, 24486 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2023-04-01 20:41:19,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293646 states. [2023-04-01 20:41:23,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293646 to 288485. [2023-04-01 20:41:23,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288485 states, 283111 states have (on average 1.0879266436132824) internal successors, (308004), 284038 states have internal predecessors, (308004), 1674 states have call successors, (1674), 1350 states have call predecessors, (1674), 3699 states have return successors, (34938), 3096 states have call predecessors, (34938), 1673 states have call successors, (34938) [2023-04-01 20:41:24,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288485 states to 288485 states and 344616 transitions. [2023-04-01 20:41:24,438 INFO L78 Accepts]: Start accepts. Automaton has 288485 states and 344616 transitions. Word has length 1616 [2023-04-01 20:41:24,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:41:24,438 INFO L495 AbstractCegarLoop]: Abstraction has 288485 states and 344616 transitions. [2023-04-01 20:41:24,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 124.46153846153847) internal successors, (1618), 11 states have internal predecessors, (1618), 5 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-04-01 20:41:24,439 INFO L276 IsEmpty]: Start isEmpty. Operand 288485 states and 344616 transitions. [2023-04-01 20:41:25,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2178 [2023-04-01 20:41:25,080 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:41:25,095 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:41:25,113 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 20:41:25,302 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,SelfDestructingSolverStorable9 [2023-04-01 20:41:25,303 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:41:25,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:41:25,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2116765805, now seen corresponding path program 1 times [2023-04-01 20:41:25,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:41:25,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039032248] [2023-04-01 20:41:25,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:41:25,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:41:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:29,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:41:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:29,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:41:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:29,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:41:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:29,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-04-01 20:41:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:29,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2023-04-01 20:41:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:29,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:41:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:29,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 821 [2023-04-01 20:41:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:30,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 889 [2023-04-01 20:41:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:30,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:41:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:30,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:41:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:30,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3084 backedges. 1367 proven. 713 refuted. 0 times theorem prover too weak. 1004 trivial. 0 not checked. [2023-04-01 20:41:30,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:41:30,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039032248] [2023-04-01 20:41:30,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039032248] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:41:30,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784095851] [2023-04-01 20:41:30,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:41:30,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:41:30,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:41:30,200 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 20:41:30,202 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 20:41:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:30,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 2866 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:41:30,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:41:30,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3084 backedges. 1954 proven. 2 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-04-01 20:41:30,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:41:31,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3084 backedges. 1590 proven. 71 refuted. 0 times theorem prover too weak. 1423 trivial. 0 not checked. [2023-04-01 20:41:31,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784095851] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:41:31,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:41:31,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 20:41:31,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998066450] [2023-04-01 20:41:31,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:41:31,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:41:31,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:41:31,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:41:31,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:41:31,151 INFO L87 Difference]: Start difference. First operand 288485 states and 344616 transitions. Second operand has 12 states, 12 states have (on average 138.5) internal successors, (1662), 10 states have internal predecessors, (1662), 5 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-04-01 20:41:42,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:41:42,887 INFO L93 Difference]: Finished difference Result 480739 states and 569919 transitions. [2023-04-01 20:41:42,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-04-01 20:41:42,888 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 138.5) internal successors, (1662), 10 states have internal predecessors, (1662), 5 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 2177 [2023-04-01 20:41:42,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:41:43,740 INFO L225 Difference]: With dead ends: 480739 [2023-04-01 20:41:43,740 INFO L226 Difference]: Without dead ends: 197264 [2023-04-01 20:41:44,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4421 GetRequests, 4388 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2023-04-01 20:41:44,064 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 10227 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 11606 mSolverCounterSat, 4958 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10227 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 16564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4958 IncrementalHoareTripleChecker+Valid, 11606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:41:44,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10227 Valid, 372 Invalid, 16564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4958 Valid, 11606 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-04-01 20:41:44,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197264 states. [2023-04-01 20:41:46,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197264 to 193490. [2023-04-01 20:41:47,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193490 states, 189222 states have (on average 1.0713553392311677) internal successors, (202724), 190115 states have internal predecessors, (202724), 1041 states have call successors, (1041), 898 states have call predecessors, (1041), 3226 states have return successors, (18335), 2476 states have call predecessors, (18335), 1040 states have call successors, (18335) [2023-04-01 20:41:47,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193490 states to 193490 states and 222100 transitions. [2023-04-01 20:41:47,384 INFO L78 Accepts]: Start accepts. Automaton has 193490 states and 222100 transitions. Word has length 2177 [2023-04-01 20:41:47,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:41:47,385 INFO L495 AbstractCegarLoop]: Abstraction has 193490 states and 222100 transitions. [2023-04-01 20:41:47,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 138.5) internal successors, (1662), 10 states have internal predecessors, (1662), 5 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-04-01 20:41:47,385 INFO L276 IsEmpty]: Start isEmpty. Operand 193490 states and 222100 transitions. [2023-04-01 20:41:47,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3028 [2023-04-01 20:41:47,883 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:41:47,884 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:41:47,894 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 20:41:48,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:41:48,091 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:41:48,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:41:48,092 INFO L85 PathProgramCache]: Analyzing trace with hash 152270427, now seen corresponding path program 1 times [2023-04-01 20:41:48,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:41:48,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280019516] [2023-04-01 20:41:48,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:41:48,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:41:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:49,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:41:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:49,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:41:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:49,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:41:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:50,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2023-04-01 20:41:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:50,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:41:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:50,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:41:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:50,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:41:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:50,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1014 [2023-04-01 20:41:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:50,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:41:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:50,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:41:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:50,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1555 [2023-04-01 20:41:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:50,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1739 [2023-04-01 20:41:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:50,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:41:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:50,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:41:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:50,997 INFO L134 CoverageAnalysis]: Checked inductivity of 5345 backedges. 2779 proven. 189 refuted. 0 times theorem prover too weak. 2377 trivial. 0 not checked. [2023-04-01 20:41:50,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:41:50,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280019516] [2023-04-01 20:41:50,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280019516] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:41:50,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969581972] [2023-04-01 20:41:50,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:41:50,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:41:50,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:41:51,007 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 20:41:51,008 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 20:41:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:41:51,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 3836 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 20:41:51,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:41:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5345 backedges. 3701 proven. 2 refuted. 0 times theorem prover too weak. 1642 trivial. 0 not checked. [2023-04-01 20:41:52,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:41:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 5345 backedges. 3701 proven. 2 refuted. 0 times theorem prover too weak. 1642 trivial. 0 not checked. [2023-04-01 20:41:53,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969581972] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:41:53,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:41:53,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 20:41:53,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162543637] [2023-04-01 20:41:53,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:41:53,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 20:41:53,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:41:53,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 20:41:53,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:41:53,557 INFO L87 Difference]: Start difference. First operand 193490 states and 222100 transitions. Second operand has 11 states, 11 states have (on average 245.45454545454547) internal successors, (2700), 9 states have internal predecessors, (2700), 6 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2023-04-01 20:42:01,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:42:01,736 INFO L93 Difference]: Finished difference Result 360798 states and 411771 transitions. [2023-04-01 20:42:01,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-04-01 20:42:01,737 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 245.45454545454547) internal successors, (2700), 9 states have internal predecessors, (2700), 6 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) Word has length 3027 [2023-04-01 20:42:01,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:42:02,307 INFO L225 Difference]: With dead ends: 360798 [2023-04-01 20:42:02,307 INFO L226 Difference]: Without dead ends: 169774 [2023-04-01 20:42:02,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6146 GetRequests, 6104 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=319, Invalid=1241, Unknown=0, NotChecked=0, Total=1560 [2023-04-01 20:42:02,453 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 11990 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 9570 mSolverCounterSat, 2270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11990 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 11840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2270 IncrementalHoareTripleChecker+Valid, 9570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-04-01 20:42:02,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11990 Valid, 460 Invalid, 11840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2270 Valid, 9570 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-04-01 20:42:02,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169774 states. [2023-04-01 20:42:05,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169774 to 166303. [2023-04-01 20:42:05,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166303 states, 162398 states have (on average 1.0561152230938804) internal successors, (171511), 163326 states have internal predecessors, (171511), 770 states have call successors, (770), 770 states have call predecessors, (770), 3134 states have return successors, (9912), 2206 states have call predecessors, (9912), 769 states have call successors, (9912) [2023-04-01 20:42:05,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166303 states to 166303 states and 182193 transitions. [2023-04-01 20:42:05,618 INFO L78 Accepts]: Start accepts. Automaton has 166303 states and 182193 transitions. Word has length 3027 [2023-04-01 20:42:05,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:42:05,619 INFO L495 AbstractCegarLoop]: Abstraction has 166303 states and 182193 transitions. [2023-04-01 20:42:05,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 245.45454545454547) internal successors, (2700), 9 states have internal predecessors, (2700), 6 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2023-04-01 20:42:05,620 INFO L276 IsEmpty]: Start isEmpty. Operand 166303 states and 182193 transitions. [2023-04-01 20:42:06,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3630 [2023-04-01 20:42:06,256 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:42:06,257 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 11, 11, 11, 11, 11, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:42:06,273 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 20:42:06,458 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,SelfDestructingSolverStorable11 [2023-04-01 20:42:06,458 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:42:06,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:42:06,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1296748657, now seen corresponding path program 1 times [2023-04-01 20:42:06,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:42:06,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348149753] [2023-04-01 20:42:06,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:42:06,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:42:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:13,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:42:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:13,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:42:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:13,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:42:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:13,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-01 20:42:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:13,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-04-01 20:42:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:13,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2023-04-01 20:42:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:13,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:42:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:13,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2023-04-01 20:42:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:13,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 832 [2023-04-01 20:42:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:13,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:42:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:13,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1170 [2023-04-01 20:42:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:14,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:42:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:14,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1411 [2023-04-01 20:42:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:14,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:42:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:14,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:42:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:14,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:42:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:14,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2111 [2023-04-01 20:42:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:14,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2218 [2023-04-01 20:42:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:14,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:42:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:14,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2476 [2023-04-01 20:42:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:14,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2690 [2023-04-01 20:42:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:14,559 INFO L134 CoverageAnalysis]: Checked inductivity of 12786 backedges. 3209 proven. 2892 refuted. 0 times theorem prover too weak. 6685 trivial. 0 not checked. [2023-04-01 20:42:14,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:42:14,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348149753] [2023-04-01 20:42:14,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348149753] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:42:14,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117827778] [2023-04-01 20:42:14,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:42:14,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:42:14,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:42:14,561 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 20:42:14,563 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 20:42:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:15,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 4825 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:42:15,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:42:15,800 INFO L134 CoverageAnalysis]: Checked inductivity of 12786 backedges. 7854 proven. 5 refuted. 0 times theorem prover too weak. 4927 trivial. 0 not checked. [2023-04-01 20:42:15,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:42:16,513 INFO L134 CoverageAnalysis]: Checked inductivity of 12786 backedges. 3926 proven. 968 refuted. 0 times theorem prover too weak. 7892 trivial. 0 not checked. [2023-04-01 20:42:16,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117827778] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:42:16,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:42:16,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 16 [2023-04-01 20:42:16,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439136896] [2023-04-01 20:42:16,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:42:16,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 20:42:16,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:42:16,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 20:42:16,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-04-01 20:42:16,520 INFO L87 Difference]: Start difference. First operand 166303 states and 182193 transitions. Second operand has 16 states, 16 states have (on average 150.875) internal successors, (2414), 14 states have internal predecessors, (2414), 9 states have call successors, (26), 7 states have call predecessors, (26), 8 states have return successors, (22), 8 states have call predecessors, (22), 9 states have call successors, (22) [2023-04-01 20:42:40,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:42:40,693 INFO L93 Difference]: Finished difference Result 336929 states and 371237 transitions. [2023-04-01 20:42:40,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2023-04-01 20:42:40,701 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 150.875) internal successors, (2414), 14 states have internal predecessors, (2414), 9 states have call successors, (26), 7 states have call predecessors, (26), 8 states have return successors, (22), 8 states have call predecessors, (22), 9 states have call successors, (22) Word has length 3629 [2023-04-01 20:42:40,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:42:41,045 INFO L225 Difference]: With dead ends: 336929 [2023-04-01 20:42:41,045 INFO L226 Difference]: Without dead ends: 166680 [2023-04-01 20:42:41,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7573 GetRequests, 7414 SyntacticMatches, 3 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10062 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2482, Invalid=22324, Unknown=0, NotChecked=0, Total=24806 [2023-04-01 20:42:41,293 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 53853 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 27231 mSolverCounterSat, 9727 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53879 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 36958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9727 IncrementalHoareTripleChecker+Valid, 27231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2023-04-01 20:42:41,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53879 Valid, 1604 Invalid, 36958 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9727 Valid, 27231 Invalid, 0 Unknown, 0 Unchecked, 19.0s Time] [2023-04-01 20:42:41,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166680 states. [2023-04-01 20:42:43,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166680 to 165482. [2023-04-01 20:42:43,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165482 states, 162487 states have (on average 1.013102586668472) internal successors, (164616), 163126 states have internal predecessors, (164616), 778 states have call successors, (778), 778 states have call predecessors, (778), 2216 states have return successors, (5282), 1577 states have call predecessors, (5282), 777 states have call successors, (5282) [2023-04-01 20:42:43,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165482 states to 165482 states and 170676 transitions. [2023-04-01 20:42:43,735 INFO L78 Accepts]: Start accepts. Automaton has 165482 states and 170676 transitions. Word has length 3629 [2023-04-01 20:42:43,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:42:43,736 INFO L495 AbstractCegarLoop]: Abstraction has 165482 states and 170676 transitions. [2023-04-01 20:42:43,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 150.875) internal successors, (2414), 14 states have internal predecessors, (2414), 9 states have call successors, (26), 7 states have call predecessors, (26), 8 states have return successors, (22), 8 states have call predecessors, (22), 9 states have call successors, (22) [2023-04-01 20:42:43,736 INFO L276 IsEmpty]: Start isEmpty. Operand 165482 states and 170676 transitions. [2023-04-01 20:42:44,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4716 [2023-04-01 20:42:44,248 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:42:44,249 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 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, 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, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 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, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 20:42:44,259 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 20:42:44,458 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,SelfDestructingSolverStorable12 [2023-04-01 20:42:44,459 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:42:44,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:42:44,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1580182943, now seen corresponding path program 1 times [2023-04-01 20:42:44,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:42:44,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234392194] [2023-04-01 20:42:44,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:42:44,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:42:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:50,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:42:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:50,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:42:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:50,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-01 20:42:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:50,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-01 20:42:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:50,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2023-04-01 20:42:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:50,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2023-04-01 20:42:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:50,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:42:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:50,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 674 [2023-04-01 20:42:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:50,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 860 [2023-04-01 20:42:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:50,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1005 [2023-04-01 20:42:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:50,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1161 [2023-04-01 20:42:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:50,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:42:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:50,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1480 [2023-04-01 20:42:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:50,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:42:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:50,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1821 [2023-04-01 20:42:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:50,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2038 [2023-04-01 20:42:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:50,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:42:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:50,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:42:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:50,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2497 [2023-04-01 20:42:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:51,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:42:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:51,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:42:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:51,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:42:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:51,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3197 [2023-04-01 20:42:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:51,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3304 [2023-04-01 20:42:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:51,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:42:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:51,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3562 [2023-04-01 20:42:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:51,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3776 [2023-04-01 20:42:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:51,545 INFO L134 CoverageAnalysis]: Checked inductivity of 23418 backedges. 4130 proven. 619 refuted. 0 times theorem prover too weak. 18669 trivial. 0 not checked. [2023-04-01 20:42:51,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:42:51,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234392194] [2023-04-01 20:42:51,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234392194] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:42:51,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468458469] [2023-04-01 20:42:51,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:42:51,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:42:51,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:42:51,547 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:42:51,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-01 20:42:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:42:52,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 6189 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:42:52,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:42:52,996 INFO L134 CoverageAnalysis]: Checked inductivity of 23418 backedges. 11409 proven. 2 refuted. 0 times theorem prover too weak. 12007 trivial. 0 not checked. [2023-04-01 20:42:52,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:42:53,472 INFO L134 CoverageAnalysis]: Checked inductivity of 23418 backedges. 4923 proven. 1339 refuted. 0 times theorem prover too weak. 17156 trivial. 0 not checked. [2023-04-01 20:42:53,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468458469] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:42:53,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:42:53,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2023-04-01 20:42:53,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303602906] [2023-04-01 20:42:53,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:42:53,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 20:42:53,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:42:53,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 20:42:53,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-04-01 20:42:53,479 INFO L87 Difference]: Start difference. First operand 165482 states and 170676 transitions. Second operand has 14 states, 14 states have (on average 133.28571428571428) internal successors, (1866), 12 states have internal predecessors, (1866), 5 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16)