/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/Problem05_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 21:01:00,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 21:01:00,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 21:01:00,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 21:01:00,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 21:01:00,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 21:01:00,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 21:01:00,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 21:01:00,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 21:01:00,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 21:01:00,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 21:01:00,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 21:01:00,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 21:01:00,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 21:01:00,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 21:01:00,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 21:01:00,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 21:01:00,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 21:01:00,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 21:01:00,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 21:01:00,520 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 21:01:00,548 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 21:01:00,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 21:01:00,549 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 21:01:00,549 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 21:01:00,550 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 21:01:00,550 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 21:01:00,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 21:01:00,550 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 21:01:00,550 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 21:01:00,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 21:01:00,551 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 21:01:00,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 21:01:00,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 21:01:00,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 21:01:00,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 21:01:00,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 21:01:00,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 21:01:00,551 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 21:01:00,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 21:01:00,552 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 21:01:00,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 21:01:00,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 21:01:00,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 21:01:00,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 21:01:00,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 21:01:00,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 21:01:00,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 21:01:00,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 21:01:00,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 21:01:00,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 21:01:00,553 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 21:01:00,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 21:01:00,553 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 21:01:00,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 21:01:00,553 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 21:01:00,553 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 21:01:00,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 21:01:00,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 21:01:00,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 21:01:00,757 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 21:01:00,757 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 21:01:00,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem05_label43.c [2023-04-01 21:01:01,852 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 21:01:02,401 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 21:01:02,402 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label43.c [2023-04-01 21:01:02,449 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ba7a248f/49db39d84b3c4be8b19896db296db84a/FLAG48ac25f0d [2023-04-01 21:01:02,462 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ba7a248f/49db39d84b3c4be8b19896db296db84a [2023-04-01 21:01:02,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 21:01:02,465 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 21:01:02,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 21:01:02,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 21:01:02,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 21:01:02,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 09:01:02" (1/1) ... [2023-04-01 21:01:02,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef6a09d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:02, skipping insertion in model container [2023-04-01 21:01:02,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 09:01:02" (1/1) ... [2023-04-01 21:01:02,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 21:01:02,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 21:01:03,885 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/Problem05_label43.c[381336,381349] [2023-04-01 21:01:03,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 21:01:03,903 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 21:01:04,478 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/Problem05_label43.c[381336,381349] [2023-04-01 21:01:04,481 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 21:01:04,516 INFO L208 MainTranslator]: Completed translation [2023-04-01 21:01:04,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:04 WrapperNode [2023-04-01 21:01:04,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 21:01:04,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 21:01:04,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 21:01:04,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 21:01:04,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:04" (1/1) ... [2023-04-01 21:01:04,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:04" (1/1) ... [2023-04-01 21:01:04,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:04" (1/1) ... [2023-04-01 21:01:04,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:04" (1/1) ... [2023-04-01 21:01:04,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:04" (1/1) ... [2023-04-01 21:01:04,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:04" (1/1) ... [2023-04-01 21:01:04,786 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:04" (1/1) ... [2023-04-01 21:01:04,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:04" (1/1) ... [2023-04-01 21:01:04,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 21:01:04,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 21:01:04,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 21:01:04,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 21:01:04,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:04" (1/1) ... [2023-04-01 21:01:04,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 21:01:04,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:01:04,892 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 21:01:05,061 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 21:01:05,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 21:01:05,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 21:01:05,088 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 21:01:05,088 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 21:01:05,088 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 21:01:05,088 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 21:01:05,088 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 21:01:05,088 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-01 21:01:05,088 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-04-01 21:01:05,088 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2023-04-01 21:01:05,089 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2023-04-01 21:01:05,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 21:01:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 21:01:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 21:01:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 21:01:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 21:01:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-01 21:01:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-04-01 21:01:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2023-04-01 21:01:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2023-04-01 21:01:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 21:01:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 21:01:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 21:01:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 21:01:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 21:01:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 21:01:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 21:01:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 21:01:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 21:01:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 21:01:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 21:01:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 21:01:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 21:01:05,165 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 21:01:05,166 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 21:01:10,249 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 21:01:10,263 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 21:01:10,263 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 21:01:10,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 09:01:10 BoogieIcfgContainer [2023-04-01 21:01:10,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 21:01:10,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 21:01:10,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 21:01:10,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 21:01:10,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 09:01:02" (1/3) ... [2023-04-01 21:01:10,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7525572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 09:01:10, skipping insertion in model container [2023-04-01 21:01:10,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:01:04" (2/3) ... [2023-04-01 21:01:10,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7525572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 09:01:10, skipping insertion in model container [2023-04-01 21:01:10,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 09:01:10" (3/3) ... [2023-04-01 21:01:10,272 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43.c [2023-04-01 21:01:10,283 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 21:01:10,283 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 21:01:10,339 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 21:01:10,344 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;@7de70c85, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 21:01:10,344 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 21:01:10,350 INFO L276 IsEmpty]: Start isEmpty. Operand has 2222 states, 2200 states have (on average 1.864090909090909) internal successors, (4101), 2201 states have internal predecessors, (4101), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-01 21:01:10,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1706 [2023-04-01 21:01:10,419 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:01:10,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:10,422 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:01:10,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:01:10,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1963154778, now seen corresponding path program 1 times [2023-04-01 21:01:10,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:01:10,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51936010] [2023-04-01 21:01:10,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:01:10,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:01:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:01:17,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:01:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:01:17,297 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 21:01:17,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:01:17,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51936010] [2023-04-01 21:01:17,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51936010] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:01:17,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 21:01:17,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 21:01:17,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884418619] [2023-04-01 21:01:17,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:01:17,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 21:01:17,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:01:17,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 21:01:17,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 21:01:17,351 INFO L87 Difference]: Start difference. First operand has 2222 states, 2200 states have (on average 1.864090909090909) internal successors, (4101), 2201 states have internal predecessors, (4101), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 5 states, 4 states have (on average 423.5) internal successors, (1694), 3 states have internal predecessors, (1694), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 21:01:30,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:01:30,078 INFO L93 Difference]: Finished difference Result 8125 states and 15405 transitions. [2023-04-01 21:01:30,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 21:01:30,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 423.5) internal successors, (1694), 3 states have internal predecessors, (1694), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 1705 [2023-04-01 21:01:30,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:01:30,112 INFO L225 Difference]: With dead ends: 8125 [2023-04-01 21:01:30,112 INFO L226 Difference]: Without dead ends: 5835 [2023-04-01 21:01:30,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 21:01:30,122 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 8737 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 11197 mSolverCounterSat, 4583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8737 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 15780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4583 IncrementalHoareTripleChecker+Valid, 11197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2023-04-01 21:01:30,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8737 Valid, 631 Invalid, 15780 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4583 Valid, 11197 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2023-04-01 21:01:30,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5835 states. [2023-04-01 21:01:30,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5835 to 5801. [2023-04-01 21:01:30,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5801 states, 5731 states have (on average 1.6169952887803176) internal successors, (9267), 5734 states have internal predecessors, (9267), 26 states have call successors, (26), 26 states have call predecessors, (26), 43 states have return successors, (91), 40 states have call predecessors, (91), 25 states have call successors, (91) [2023-04-01 21:01:30,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 9384 transitions. [2023-04-01 21:01:30,261 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 9384 transitions. Word has length 1705 [2023-04-01 21:01:30,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:01:30,263 INFO L495 AbstractCegarLoop]: Abstraction has 5801 states and 9384 transitions. [2023-04-01 21:01:30,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 423.5) internal successors, (1694), 3 states have internal predecessors, (1694), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 21:01:30,264 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 9384 transitions. [2023-04-01 21:01:30,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1730 [2023-04-01 21:01:30,329 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:01:30,330 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:30,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 21:01:30,330 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:01:30,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:01:30,331 INFO L85 PathProgramCache]: Analyzing trace with hash -962267187, now seen corresponding path program 1 times [2023-04-01 21:01:30,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:01:30,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124831894] [2023-04-01 21:01:30,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:01:30,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:01:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:01:32,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:01:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:01:32,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:01:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:01:32,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-04-01 21:01:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:01:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 21:01:32,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:01:32,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124831894] [2023-04-01 21:01:32,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124831894] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:01:32,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167644746] [2023-04-01 21:01:32,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:01:32,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:01:32,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:01:32,745 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 21:01:32,801 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 21:01:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:01:33,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 2208 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 21:01:33,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:01:33,362 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-01 21:01:33,362 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:01:33,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167644746] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:01:33,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:01:33,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 21:01:33,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595754702] [2023-04-01 21:01:33,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:01:33,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 21:01:33,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:01:33,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 21:01:33,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 21:01:33,367 INFO L87 Difference]: Start difference. First operand 5801 states and 9384 transitions. Second operand has 5 states, 5 states have (on average 340.6) internal successors, (1703), 4 states have internal predecessors, (1703), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 21:01:40,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:01:40,892 INFO L93 Difference]: Finished difference Result 17259 states and 28406 transitions. [2023-04-01 21:01:40,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 21:01:40,893 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 340.6) internal successors, (1703), 4 states have internal predecessors, (1703), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 1729 [2023-04-01 21:01:40,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:01:40,939 INFO L225 Difference]: With dead ends: 17259 [2023-04-01 21:01:40,939 INFO L226 Difference]: Without dead ends: 11464 [2023-04-01 21:01:40,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1741 GetRequests, 1729 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-04-01 21:01:40,953 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 5972 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 10925 mSolverCounterSat, 3663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5972 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 14588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3663 IncrementalHoareTripleChecker+Valid, 10925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-04-01 21:01:40,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5972 Valid, 1988 Invalid, 14588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3663 Valid, 10925 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-04-01 21:01:40,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11464 states. [2023-04-01 21:01:41,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11464 to 11230. [2023-04-01 21:01:41,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11230 states, 11041 states have (on average 1.4966035685173444) internal successors, (16524), 11058 states have internal predecessors, (16524), 50 states have call successors, (50), 50 states have call predecessors, (50), 138 states have return successors, (480), 121 states have call predecessors, (480), 49 states have call successors, (480) [2023-04-01 21:01:41,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11230 states to 11230 states and 17054 transitions. [2023-04-01 21:01:41,211 INFO L78 Accepts]: Start accepts. Automaton has 11230 states and 17054 transitions. Word has length 1729 [2023-04-01 21:01:41,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:01:41,211 INFO L495 AbstractCegarLoop]: Abstraction has 11230 states and 17054 transitions. [2023-04-01 21:01:41,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 340.6) internal successors, (1703), 4 states have internal predecessors, (1703), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 21:01:41,221 INFO L276 IsEmpty]: Start isEmpty. Operand 11230 states and 17054 transitions. [2023-04-01 21:01:41,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1746 [2023-04-01 21:01:41,255 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:01:41,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:41,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 21:01:41,463 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 21:01:41,464 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:01:41,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:01:41,464 INFO L85 PathProgramCache]: Analyzing trace with hash -150433621, now seen corresponding path program 1 times [2023-04-01 21:01:41,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:01:41,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529388198] [2023-04-01 21:01:41,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:01:41,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:01:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:01:43,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:01:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:01:43,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:01:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:01:43,417 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:01:43,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:01:43,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529388198] [2023-04-01 21:01:43,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529388198] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:01:43,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 21:01:43,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 21:01:43,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397036774] [2023-04-01 21:01:43,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:01:43,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 21:01:43,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:01:43,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 21:01:43,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 21:01:43,426 INFO L87 Difference]: Start difference. First operand 11230 states and 17054 transitions. Second operand has 8 states, 7 states have (on average 247.42857142857142) internal successors, (1732), 5 states have internal predecessors, (1732), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 21:01:55,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:01:55,601 INFO L93 Difference]: Finished difference Result 44734 states and 72689 transitions. [2023-04-01 21:01:55,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 21:01:55,602 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 247.42857142857142) internal successors, (1732), 5 states have internal predecessors, (1732), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 1745 [2023-04-01 21:01:55,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:01:55,777 INFO L225 Difference]: With dead ends: 44734 [2023-04-01 21:01:55,777 INFO L226 Difference]: Without dead ends: 33510 [2023-04-01 21:01:55,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 21:01:55,805 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 18579 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 14672 mSolverCounterSat, 7327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18579 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 21999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7327 IncrementalHoareTripleChecker+Valid, 14672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2023-04-01 21:01:55,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18579 Valid, 1165 Invalid, 21999 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7327 Valid, 14672 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2023-04-01 21:01:55,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33510 states. [2023-04-01 21:01:56,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33510 to 33249. [2023-04-01 21:01:56,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33249 states, 32427 states have (on average 1.4166897955407531) internal successors, (45939), 32512 states have internal predecessors, (45939), 146 states have call successors, (146), 146 states have call predecessors, (146), 675 states have return successors, (4661), 590 states have call predecessors, (4661), 145 states have call successors, (4661) [2023-04-01 21:01:56,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33249 states to 33249 states and 50746 transitions. [2023-04-01 21:01:56,426 INFO L78 Accepts]: Start accepts. Automaton has 33249 states and 50746 transitions. Word has length 1745 [2023-04-01 21:01:56,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:01:56,426 INFO L495 AbstractCegarLoop]: Abstraction has 33249 states and 50746 transitions. [2023-04-01 21:01:56,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 247.42857142857142) internal successors, (1732), 5 states have internal predecessors, (1732), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 21:01:56,427 INFO L276 IsEmpty]: Start isEmpty. Operand 33249 states and 50746 transitions. [2023-04-01 21:01:56,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1747 [2023-04-01 21:01:56,514 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:01:56,514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:56,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 21:01:56,515 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:01:56,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:01:56,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1589757873, now seen corresponding path program 1 times [2023-04-01 21:01:56,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:01:56,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157173001] [2023-04-01 21:01:56,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:01:56,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:01:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:01:58,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:01:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:01:58,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:01:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:01:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:01:58,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:01:58,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157173001] [2023-04-01 21:01:58,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157173001] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:01:58,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 21:01:58,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 21:01:58,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619799150] [2023-04-01 21:01:58,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:01:58,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 21:01:58,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:01:58,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 21:01:58,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 21:01:58,158 INFO L87 Difference]: Start difference. First operand 33249 states and 50746 transitions. Second operand has 7 states, 6 states have (on average 288.8333333333333) internal successors, (1733), 4 states have internal predecessors, (1733), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 21:02:07,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:02:07,059 INFO L93 Difference]: Finished difference Result 95611 states and 155635 transitions. [2023-04-01 21:02:07,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 21:02:07,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 288.8333333333333) internal successors, (1733), 4 states have internal predecessors, (1733), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 1746 [2023-04-01 21:02:07,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:02:07,271 INFO L225 Difference]: With dead ends: 95611 [2023-04-01 21:02:07,271 INFO L226 Difference]: Without dead ends: 62368 [2023-04-01 21:02:07,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 21:02:07,342 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 9897 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 13198 mSolverCounterSat, 2670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9897 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 15868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2670 IncrementalHoareTripleChecker+Valid, 13198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-04-01 21:02:07,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9897 Valid, 940 Invalid, 15868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2670 Valid, 13198 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-04-01 21:02:07,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62368 states. [2023-04-01 21:02:08,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62368 to 62218. [2023-04-01 21:02:08,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62218 states, 60671 states have (on average 1.358738112112871) internal successors, (82436), 60849 states have internal predecessors, (82436), 274 states have call successors, (274), 274 states have call predecessors, (274), 1272 states have return successors, (12415), 1094 states have call predecessors, (12415), 273 states have call successors, (12415) [2023-04-01 21:02:08,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62218 states to 62218 states and 95125 transitions. [2023-04-01 21:02:08,380 INFO L78 Accepts]: Start accepts. Automaton has 62218 states and 95125 transitions. Word has length 1746 [2023-04-01 21:02:08,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:02:08,381 INFO L495 AbstractCegarLoop]: Abstraction has 62218 states and 95125 transitions. [2023-04-01 21:02:08,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 288.8333333333333) internal successors, (1733), 4 states have internal predecessors, (1733), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 21:02:08,388 INFO L276 IsEmpty]: Start isEmpty. Operand 62218 states and 95125 transitions. [2023-04-01 21:02:09,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1846 [2023-04-01 21:02:09,068 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:02:09,069 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:09,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 21:02:09,069 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:02:09,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:02:09,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1656169779, now seen corresponding path program 1 times [2023-04-01 21:02:09,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:02:09,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773780410] [2023-04-01 21:02:09,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:02:09,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:02:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:10,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:02:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:10,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:02:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:10,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-01 21:02:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:10,523 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 21:02:10,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:02:10,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773780410] [2023-04-01 21:02:10,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773780410] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:02:10,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650892420] [2023-04-01 21:02:10,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:02:10,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:02:10,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:02:10,525 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 21:02:10,553 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 21:02:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:11,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 2316 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 21:02:11,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:02:11,188 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:02:11,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 21:02:11,523 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:02:11,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650892420] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 21:02:11,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 21:02:11,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 21:02:11,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197889699] [2023-04-01 21:02:11,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 21:02:11,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 21:02:11,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:02:11,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 21:02:11,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 21:02:11,528 INFO L87 Difference]: Start difference. First operand 62218 states and 95125 transitions. Second operand has 12 states, 12 states have (on average 174.08333333333334) internal successors, (2089), 10 states have internal predecessors, (2089), 5 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 21:02:26,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:02:26,662 INFO L93 Difference]: Finished difference Result 191561 states and 308555 transitions. [2023-04-01 21:02:26,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 21:02:26,663 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 174.08333333333334) internal successors, (2089), 10 states have internal predecessors, (2089), 5 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 1845 [2023-04-01 21:02:26,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:02:27,007 INFO L225 Difference]: With dead ends: 191561 [2023-04-01 21:02:27,007 INFO L226 Difference]: Without dead ends: 129349 [2023-04-01 21:02:27,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3715 GetRequests, 3693 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2023-04-01 21:02:27,089 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 17174 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 23936 mSolverCounterSat, 5976 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17174 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 29912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5976 IncrementalHoareTripleChecker+Valid, 23936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2023-04-01 21:02:27,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17174 Valid, 1742 Invalid, 29912 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5976 Valid, 23936 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2023-04-01 21:02:27,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129349 states. [2023-04-01 21:02:29,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129349 to 127441. [2023-04-01 21:02:29,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127441 states, 124263 states have (on average 1.1862984154575376) internal successors, (147413), 124648 states have internal predecessors, (147413), 562 states have call successors, (562), 562 states have call predecessors, (562), 2615 states have return successors, (29980), 2230 states have call predecessors, (29980), 561 states have call successors, (29980) [2023-04-01 21:02:29,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127441 states to 127441 states and 177955 transitions. [2023-04-01 21:02:29,929 INFO L78 Accepts]: Start accepts. Automaton has 127441 states and 177955 transitions. Word has length 1845 [2023-04-01 21:02:29,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:02:29,930 INFO L495 AbstractCegarLoop]: Abstraction has 127441 states and 177955 transitions. [2023-04-01 21:02:29,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 174.08333333333334) internal successors, (2089), 10 states have internal predecessors, (2089), 5 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 21:02:29,930 INFO L276 IsEmpty]: Start isEmpty. Operand 127441 states and 177955 transitions. [2023-04-01 21:02:30,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1987 [2023-04-01 21:02:30,391 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:02:30,391 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:30,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 21:02:30,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:02:30,609 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:02:30,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:02:30,610 INFO L85 PathProgramCache]: Analyzing trace with hash 340344949, now seen corresponding path program 1 times [2023-04-01 21:02:30,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:02:30,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37857293] [2023-04-01 21:02:30,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:02:30,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:02:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:32,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:02:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:32,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:02:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:32,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-01 21:02:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:32,382 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 273 proven. 105 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 21:02:32,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:02:32,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37857293] [2023-04-01 21:02:32,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37857293] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:02:32,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216771244] [2023-04-01 21:02:32,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:02:32,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:02:32,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:02:32,384 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 21:02:32,385 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 21:02:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:02:32,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 2457 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 21:02:32,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:02:33,111 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 381 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:02:33,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 21:02:33,465 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 381 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:02:33,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216771244] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 21:02:33,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 21:02:33,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 21:02:33,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230342999] [2023-04-01 21:02:33,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 21:02:33,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 21:02:33,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:02:33,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 21:02:33,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 21:02:33,471 INFO L87 Difference]: Start difference. First operand 127441 states and 177955 transitions. Second operand has 11 states, 11 states have (on average 209.8181818181818) internal successors, (2308), 9 states have internal predecessors, (2308), 4 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-01 21:02:50,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:02:50,792 INFO L93 Difference]: Finished difference Result 362865 states and 558813 transitions. [2023-04-01 21:02:50,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-04-01 21:02:50,793 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 209.8181818181818) internal successors, (2308), 9 states have internal predecessors, (2308), 4 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 1986 [2023-04-01 21:02:50,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:02:51,868 INFO L225 Difference]: With dead ends: 362865 [2023-04-01 21:02:51,868 INFO L226 Difference]: Without dead ends: 235430 [2023-04-01 21:02:52,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4040 GetRequests, 3998 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=340, Invalid=1382, Unknown=0, NotChecked=0, Total=1722 [2023-04-01 21:02:52,045 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 13611 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 31130 mSolverCounterSat, 7797 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13624 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 38927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7797 IncrementalHoareTripleChecker+Valid, 31130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2023-04-01 21:02:52,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13624 Valid, 1945 Invalid, 38927 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7797 Valid, 31130 Invalid, 0 Unknown, 0 Unchecked, 14.4s Time] [2023-04-01 21:02:52,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235430 states. [2023-04-01 21:02:56,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235430 to 214045. [2023-04-01 21:02:56,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214045 states, 208805 states have (on average 1.088992121836163) internal successors, (227387), 209496 states have internal predecessors, (227387), 946 states have call successors, (946), 946 states have call predecessors, (946), 4293 states have return successors, (36834), 3602 states have call predecessors, (36834), 945 states have call successors, (36834) [2023-04-01 21:02:57,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214045 states to 214045 states and 265167 transitions. [2023-04-01 21:02:57,941 INFO L78 Accepts]: Start accepts. Automaton has 214045 states and 265167 transitions. Word has length 1986 [2023-04-01 21:02:57,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:02:57,941 INFO L495 AbstractCegarLoop]: Abstraction has 214045 states and 265167 transitions. [2023-04-01 21:02:57,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 209.8181818181818) internal successors, (2308), 9 states have internal predecessors, (2308), 4 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-01 21:02:57,942 INFO L276 IsEmpty]: Start isEmpty. Operand 214045 states and 265167 transitions. [2023-04-01 21:02:58,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2031 [2023-04-01 21:02:58,404 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:02:58,405 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:58,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 21:02:58,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:02:58,614 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:02:58,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:02:58,615 INFO L85 PathProgramCache]: Analyzing trace with hash -952161246, now seen corresponding path program 1 times [2023-04-01 21:02:58,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:02:58,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72126996] [2023-04-01 21:02:58,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:02:58,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:02:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:00,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:03:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:00,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:03:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:00,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-01 21:03:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:00,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-04-01 21:03:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:00,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-04-01 21:03:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:00,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-04-01 21:03:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:00,294 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 371 proven. 48 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2023-04-01 21:03:00,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:03:00,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72126996] [2023-04-01 21:03:00,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72126996] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:03:00,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124816207] [2023-04-01 21:03:00,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:03:00,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:03:00,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:03:00,296 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 21:03:00,297 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 21:03:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:00,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 21:03:00,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:03:01,023 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 431 proven. 4 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-04-01 21:03:01,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 21:03:01,441 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 366 proven. 190 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-04-01 21:03:01,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124816207] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 21:03:01,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 21:03:01,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 21:03:01,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352421989] [2023-04-01 21:03:01,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 21:03:01,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 21:03:01,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:03:01,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 21:03:01,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-04-01 21:03:01,447 INFO L87 Difference]: Start difference. First operand 214045 states and 265167 transitions. Second operand has 12 states, 12 states have (on average 173.16666666666666) internal successors, (2078), 10 states have internal predecessors, (2078), 4 states have call successors, (18), 6 states have call predecessors, (18), 9 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-01 21:03:35,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:03:35,183 INFO L93 Difference]: Finished difference Result 604044 states and 759210 transitions. [2023-04-01 21:03:35,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-04-01 21:03:35,184 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 173.16666666666666) internal successors, (2078), 10 states have internal predecessors, (2078), 4 states have call successors, (18), 6 states have call predecessors, (18), 9 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 2030 [2023-04-01 21:03:35,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:03:36,300 INFO L225 Difference]: With dead ends: 604044 [2023-04-01 21:03:36,301 INFO L226 Difference]: Without dead ends: 390005 [2023-04-01 21:03:36,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4137 GetRequests, 4092 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=359, Invalid=1533, Unknown=0, NotChecked=0, Total=1892 [2023-04-01 21:03:36,495 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 10809 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 60575 mSolverCounterSat, 4133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10814 SdHoareTripleChecker+Valid, 2592 SdHoareTripleChecker+Invalid, 64708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4133 IncrementalHoareTripleChecker+Valid, 60575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.8s IncrementalHoareTripleChecker+Time [2023-04-01 21:03:36,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10814 Valid, 2592 Invalid, 64708 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4133 Valid, 60575 Invalid, 0 Unknown, 0 Unchecked, 28.8s Time] [2023-04-01 21:03:36,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390005 states. [2023-04-01 21:03:42,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390005 to 383615. [2023-04-01 21:03:42,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383615 states, 376190 states have (on average 1.0554214625588134) internal successors, (397039), 377035 states have internal predecessors, (397039), 1723 states have call successors, (1723), 1722 states have call predecessors, (1723), 5701 states have return successors, (49339), 4857 states have call predecessors, (49339), 1722 states have call successors, (49339) [2023-04-01 21:03:44,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383615 states to 383615 states and 448101 transitions. [2023-04-01 21:03:44,190 INFO L78 Accepts]: Start accepts. Automaton has 383615 states and 448101 transitions. Word has length 2030 [2023-04-01 21:03:44,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:03:44,190 INFO L495 AbstractCegarLoop]: Abstraction has 383615 states and 448101 transitions. [2023-04-01 21:03:44,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 173.16666666666666) internal successors, (2078), 10 states have internal predecessors, (2078), 4 states have call successors, (18), 6 states have call predecessors, (18), 9 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-01 21:03:44,191 INFO L276 IsEmpty]: Start isEmpty. Operand 383615 states and 448101 transitions. [2023-04-01 21:03:44,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2104 [2023-04-01 21:03:44,885 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:03:44,886 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:44,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 21:03:45,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:03:45,094 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:03:45,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:03:45,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1800347796, now seen corresponding path program 1 times [2023-04-01 21:03:45,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:03:45,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333730489] [2023-04-01 21:03:45,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:03:45,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:03:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:49,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:03:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:49,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:03:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:49,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-01 21:03:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:49,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-04-01 21:03:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:49,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-04-01 21:03:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:49,827 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 398 proven. 10 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2023-04-01 21:03:49,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:03:49,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333730489] [2023-04-01 21:03:49,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333730489] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:03:49,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544954776] [2023-04-01 21:03:49,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:03:49,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:03:49,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:03:49,829 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 21:03:49,840 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 21:03:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:03:50,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 2688 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-01 21:03:50,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:03:51,812 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2023-04-01 21:03:51,813 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:03:51,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544954776] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:03:51,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:03:51,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 21:03:51,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468059837] [2023-04-01 21:03:51,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:03:51,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 21:03:51,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:03:51,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 21:03:51,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-04-01 21:03:51,816 INFO L87 Difference]: Start difference. First operand 383615 states and 448101 transitions. Second operand has 3 states, 3 states have (on average 622.6666666666666) internal successors, (1868), 3 states have internal predecessors, (1868), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 21:04:01,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:04:01,439 INFO L93 Difference]: Finished difference Result 901367 states and 1060697 transitions. [2023-04-01 21:04:01,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 21:04:01,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 622.6666666666666) internal successors, (1868), 3 states have internal predecessors, (1868), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 2103 [2023-04-01 21:04:01,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:04:03,849 INFO L225 Difference]: With dead ends: 901367 [2023-04-01 21:04:03,849 INFO L226 Difference]: Without dead ends: 517762 [2023-04-01 21:04:04,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2126 GetRequests, 2120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-04-01 21:04:04,199 INFO L413 NwaCegarLoop]: 1477 mSDtfsCounter, 353 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 5315 mSolverCounterSat, 2100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 7415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2100 IncrementalHoareTripleChecker+Valid, 5315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-04-01 21:04:04,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 1653 Invalid, 7415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2100 Valid, 5315 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-04-01 21:04:04,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517762 states. [2023-04-01 21:04:10,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517762 to 489527. [2023-04-01 21:04:11,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489527 states, 480982 states have (on average 1.0554324278247418) internal successors, (507644), 481879 states have internal predecessors, (507644), 2211 states have call successors, (2211), 2210 states have call predecessors, (2211), 6333 states have return successors, (65170), 5437 states have call predecessors, (65170), 2210 states have call successors, (65170) [2023-04-01 21:04:13,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489527 states to 489527 states and 575025 transitions. [2023-04-01 21:04:13,908 INFO L78 Accepts]: Start accepts. Automaton has 489527 states and 575025 transitions. Word has length 2103 [2023-04-01 21:04:13,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:04:13,909 INFO L495 AbstractCegarLoop]: Abstraction has 489527 states and 575025 transitions. [2023-04-01 21:04:13,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 622.6666666666666) internal successors, (1868), 3 states have internal predecessors, (1868), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 21:04:13,910 INFO L276 IsEmpty]: Start isEmpty. Operand 489527 states and 575025 transitions. [2023-04-01 21:04:14,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2187 [2023-04-01 21:04:14,788 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:04:14,789 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:14,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 21:04:14,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:04:14,997 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:04:14,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:04:14,998 INFO L85 PathProgramCache]: Analyzing trace with hash -133078466, now seen corresponding path program 1 times [2023-04-01 21:04:14,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:04:14,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572773] [2023-04-01 21:04:14,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:04:14,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:04:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat