/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_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 20:55:10,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 20:55:10,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 20:55:10,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 20:55:10,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 20:55:10,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 20:55:10,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 20:55:10,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 20:55:10,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 20:55:10,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 20:55:10,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 20:55:10,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 20:55:10,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 20:55:10,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 20:55:10,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 20:55:10,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 20:55:10,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 20:55:10,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 20:55:10,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 20:55:10,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 20:55:10,553 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 20:55:10,566 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 20:55:10,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 20:55:10,566 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 20:55:10,566 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 20:55:10,567 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 20:55:10,567 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 20:55:10,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 20:55:10,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 20:55:10,568 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 20:55:10,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 20:55:10,568 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 20:55:10,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 20:55:10,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 20:55:10,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 20:55:10,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 20:55:10,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 20:55:10,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 20:55:10,568 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 20:55:10,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 20:55:10,568 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 20:55:10,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 20:55:10,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 20:55:10,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 20:55:10,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 20:55:10,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:55:10,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 20:55:10,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 20:55:10,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 20:55:10,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 20:55:10,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 20:55:10,569 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 20:55:10,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 20:55:10,570 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 20:55:10,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 20:55:10,570 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 20:55:10,570 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 20:55:10,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 20:55:10,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 20:55:10,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 20:55:10,787 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 20:55:10,787 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 20:55:10,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem05_label21.c [2023-04-01 20:55:11,807 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 20:55:12,259 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 20:55:12,260 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label21.c [2023-04-01 20:55:12,297 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/352562d3a/307acb4f217b4c59a67d0a1b9272acfa/FLAG7fcbab76f [2023-04-01 20:55:12,432 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/352562d3a/307acb4f217b4c59a67d0a1b9272acfa [2023-04-01 20:55:12,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 20:55:12,434 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 20:55:12,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 20:55:12,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 20:55:12,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 20:55:12,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:55:12" (1/1) ... [2023-04-01 20:55:12,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50384bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:55:12, skipping insertion in model container [2023-04-01 20:55:12,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 08:55:12" (1/1) ... [2023-04-01 20:55:12,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 20:55:12,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 20:55:13,850 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_label21.c[378895,378908] [2023-04-01 20:55:13,862 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:55:13,869 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 20:55:14,459 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_label21.c[378895,378908] [2023-04-01 20:55:14,463 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 20:55:14,493 INFO L208 MainTranslator]: Completed translation [2023-04-01 20:55:14,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:55:14 WrapperNode [2023-04-01 20:55:14,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 20:55:14,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 20:55:14,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 20:55:14,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 20:55:14,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:55:14" (1/1) ... [2023-04-01 20:55:14,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:55:14" (1/1) ... [2023-04-01 20:55:14,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:55:14" (1/1) ... [2023-04-01 20:55:14,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:55:14" (1/1) ... [2023-04-01 20:55:14,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:55:14" (1/1) ... [2023-04-01 20:55:14,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:55:14" (1/1) ... [2023-04-01 20:55:14,764 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:55:14" (1/1) ... [2023-04-01 20:55:14,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:55:14" (1/1) ... [2023-04-01 20:55:14,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 20:55:14,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 20:55:14,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 20:55:14,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 20:55:14,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:55:14" (1/1) ... [2023-04-01 20:55:14,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 20:55:14,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:55:14,930 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 20:55:14,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 20:55:14,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 20:55:14,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 20:55:14,959 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 20:55:14,959 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 20:55:14,959 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 20:55:14,959 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 20:55:14,959 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 20:55:14,959 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-01 20:55:14,959 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-04-01 20:55:14,959 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2023-04-01 20:55:14,959 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2023-04-01 20:55:14,960 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 20:55:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 20:55:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 20:55:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 20:55:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 20:55:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-01 20:55:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-04-01 20:55:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2023-04-01 20:55:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2023-04-01 20:55:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 20:55:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 20:55:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 20:55:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 20:55:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 20:55:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 20:55:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 20:55:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 20:55:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 20:55:14,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 20:55:14,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 20:55:14,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 20:55:14,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 20:55:15,030 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 20:55:15,032 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 20:55:19,967 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 20:55:19,982 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 20:55:19,982 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 20:55:19,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:55:19 BoogieIcfgContainer [2023-04-01 20:55:19,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 20:55:19,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 20:55:19,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 20:55:19,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 20:55:19,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 08:55:12" (1/3) ... [2023-04-01 20:55:19,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52bce124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:55:19, skipping insertion in model container [2023-04-01 20:55:19,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 08:55:14" (2/3) ... [2023-04-01 20:55:19,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52bce124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 08:55:19, skipping insertion in model container [2023-04-01 20:55:19,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 08:55:19" (3/3) ... [2023-04-01 20:55:19,990 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label21.c [2023-04-01 20:55:20,000 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 20:55:20,001 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 20:55:20,055 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 20:55:20,060 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;@1754d977, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 20:55:20,060 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 20:55:20,067 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 20:55:20,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1688 [2023-04-01 20:55:20,142 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:55:20,144 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] [2023-04-01 20:55:20,144 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:55:20,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:55:20,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1633688370, now seen corresponding path program 1 times [2023-04-01 20:55:20,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:55:20,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134952561] [2023-04-01 20:55:20,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:55:20,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:55:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:55:26,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:55:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:55:26,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:55:26,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:55:26,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134952561] [2023-04-01 20:55:26,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134952561] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:55:26,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:55:26,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 20:55:26,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114180020] [2023-04-01 20:55:26,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:55:26,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:55:26,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:55:26,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:55:26,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 20:55:26,787 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 419.0) internal successors, (1676), 3 states have internal predecessors, (1676), 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 20:55:39,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:55:39,458 INFO L93 Difference]: Finished difference Result 8116 states and 15409 transitions. [2023-04-01 20:55:39,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 20:55:39,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 419.0) internal successors, (1676), 3 states have internal predecessors, (1676), 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 1687 [2023-04-01 20:55:39,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:55:39,500 INFO L225 Difference]: With dead ends: 8116 [2023-04-01 20:55:39,500 INFO L226 Difference]: Without dead ends: 5826 [2023-04-01 20:55:39,511 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 20:55:39,514 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 9411 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 9984 mSolverCounterSat, 7419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9411 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 17403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7419 IncrementalHoareTripleChecker+Valid, 9984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2023-04-01 20:55:39,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9411 Valid, 464 Invalid, 17403 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7419 Valid, 9984 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2023-04-01 20:55:39,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5826 states. [2023-04-01 20:55:39,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5826 to 5780. [2023-04-01 20:55:39,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5780 states, 5710 states have (on average 1.7427320490367775) internal successors, (9951), 5713 states have internal predecessors, (9951), 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 20:55:39,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5780 states to 5780 states and 10068 transitions. [2023-04-01 20:55:39,687 INFO L78 Accepts]: Start accepts. Automaton has 5780 states and 10068 transitions. Word has length 1687 [2023-04-01 20:55:39,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:55:39,690 INFO L495 AbstractCegarLoop]: Abstraction has 5780 states and 10068 transitions. [2023-04-01 20:55:39,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 419.0) internal successors, (1676), 3 states have internal predecessors, (1676), 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 20:55:39,690 INFO L276 IsEmpty]: Start isEmpty. Operand 5780 states and 10068 transitions. [2023-04-01 20:55:39,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1738 [2023-04-01 20:55:39,749 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:55:39,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-04-01 20:55:39,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 20:55:39,750 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:55:39,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:55:39,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1179756055, now seen corresponding path program 1 times [2023-04-01 20:55:39,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:55:39,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247408472] [2023-04-01 20:55:39,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:55:39,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:55:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:55:41,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:55:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:55:41,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:55:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:55:42,030 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:55:42,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:55:42,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247408472] [2023-04-01 20:55:42,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247408472] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:55:42,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:55:42,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:55:42,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306520089] [2023-04-01 20:55:42,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:55:42,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:55:42,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:55:42,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:55:42,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:55:42,037 INFO L87 Difference]: Start difference. First operand 5780 states and 10068 transitions. Second operand has 8 states, 7 states have (on average 246.28571428571428) internal successors, (1724), 5 states have internal predecessors, (1724), 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 20:55:53,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:55:53,858 INFO L93 Difference]: Finished difference Result 15383 states and 26391 transitions. [2023-04-01 20:55:53,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 20:55:53,860 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 246.28571428571428) internal successors, (1724), 5 states have internal predecessors, (1724), 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 1737 [2023-04-01 20:55:53,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:55:53,889 INFO L225 Difference]: With dead ends: 15383 [2023-04-01 20:55:53,889 INFO L226 Difference]: Without dead ends: 9609 [2023-04-01 20:55:53,900 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 20:55:53,901 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 10448 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 17407 mSolverCounterSat, 3257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10448 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 20664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3257 IncrementalHoareTripleChecker+Valid, 17407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:55:53,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10448 Valid, 1263 Invalid, 20664 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3257 Valid, 17407 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2023-04-01 20:55:53,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9609 states. [2023-04-01 20:55:54,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9609 to 9485. [2023-04-01 20:55:54,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9485 states, 9312 states have (on average 1.4669243986254294) internal successors, (13660), 9324 states have internal predecessors, (13660), 42 states have call successors, (42), 42 states have call predecessors, (42), 130 states have return successors, (326), 118 states have call predecessors, (326), 41 states have call successors, (326) [2023-04-01 20:55:54,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9485 states to 9485 states and 14028 transitions. [2023-04-01 20:55:54,093 INFO L78 Accepts]: Start accepts. Automaton has 9485 states and 14028 transitions. Word has length 1737 [2023-04-01 20:55:54,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:55:54,093 INFO L495 AbstractCegarLoop]: Abstraction has 9485 states and 14028 transitions. [2023-04-01 20:55:54,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 246.28571428571428) internal successors, (1724), 5 states have internal predecessors, (1724), 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 20:55:54,094 INFO L276 IsEmpty]: Start isEmpty. Operand 9485 states and 14028 transitions. [2023-04-01 20:55:54,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1743 [2023-04-01 20:55:54,165 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:55:54,166 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-04-01 20:55:54,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 20:55:54,166 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:55:54,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:55:54,167 INFO L85 PathProgramCache]: Analyzing trace with hash -802451414, now seen corresponding path program 1 times [2023-04-01 20:55:54,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:55:54,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96629202] [2023-04-01 20:55:54,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:55:54,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:55:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:55:55,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:55:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:55:56,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:55:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:55:56,111 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:55:56,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:55:56,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96629202] [2023-04-01 20:55:56,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96629202] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:55:56,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:55:56,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 20:55:56,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998588425] [2023-04-01 20:55:56,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:55:56,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 20:55:56,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:55:56,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 20:55:56,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 20:55:56,115 INFO L87 Difference]: Start difference. First operand 9485 states and 14028 transitions. Second operand has 8 states, 7 states have (on average 247.0) internal successors, (1729), 5 states have internal predecessors, (1729), 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 20:56:07,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:56:07,850 INFO L93 Difference]: Finished difference Result 38102 states and 59640 transitions. [2023-04-01 20:56:07,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 20:56:07,862 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 247.0) internal successors, (1729), 5 states have internal predecessors, (1729), 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 1742 [2023-04-01 20:56:07,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:56:07,954 INFO L225 Difference]: With dead ends: 38102 [2023-04-01 20:56:07,955 INFO L226 Difference]: Without dead ends: 28623 [2023-04-01 20:56:07,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 20:56:07,981 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 18321 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 16935 mSolverCounterSat, 4393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18321 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 21328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4393 IncrementalHoareTripleChecker+Valid, 16935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2023-04-01 20:56:07,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18321 Valid, 1394 Invalid, 21328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4393 Valid, 16935 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2023-04-01 20:56:08,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28623 states. [2023-04-01 20:56:08,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28623 to 28443. [2023-04-01 20:56:08,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28443 states, 27532 states have (on average 1.3228969925904401) internal successors, (36422), 27632 states have internal predecessors, (36422), 122 states have call successors, (122), 122 states have call predecessors, (122), 788 states have return successors, (4027), 688 states have call predecessors, (4027), 121 states have call successors, (4027) [2023-04-01 20:56:08,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28443 states to 28443 states and 40571 transitions. [2023-04-01 20:56:08,451 INFO L78 Accepts]: Start accepts. Automaton has 28443 states and 40571 transitions. Word has length 1742 [2023-04-01 20:56:08,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:56:08,451 INFO L495 AbstractCegarLoop]: Abstraction has 28443 states and 40571 transitions. [2023-04-01 20:56:08,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 247.0) internal successors, (1729), 5 states have internal predecessors, (1729), 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 20:56:08,452 INFO L276 IsEmpty]: Start isEmpty. Operand 28443 states and 40571 transitions. [2023-04-01 20:56:08,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1747 [2023-04-01 20:56:08,526 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:56:08,528 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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] [2023-04-01 20:56:08,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 20:56:08,528 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:56:08,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:56:08,529 INFO L85 PathProgramCache]: Analyzing trace with hash -767294400, now seen corresponding path program 1 times [2023-04-01 20:56:08,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:56:08,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991069686] [2023-04-01 20:56:08,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:56:08,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:56:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:10,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:56:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:10,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:56:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:10,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-04-01 20:56:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:10,112 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 53 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 20:56:10,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:56:10,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991069686] [2023-04-01 20:56:10,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991069686] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:56:10,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233785347] [2023-04-01 20:56:10,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:56:10,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:56:10,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:56:10,115 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:56:10,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 20:56:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:10,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 2226 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:56:10,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:56:10,801 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-04-01 20:56:10,802 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:56:10,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233785347] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:56:10,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:56:10,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 20:56:10,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209356091] [2023-04-01 20:56:10,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:56:10,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 20:56:10,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:56:10,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 20:56:10,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:56:10,822 INFO L87 Difference]: Start difference. First operand 28443 states and 40571 transitions. Second operand has 5 states, 5 states have (on average 337.0) internal successors, (1685), 4 states have internal predecessors, (1685), 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 20:56:18,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:56:18,446 INFO L93 Difference]: Finished difference Result 86410 states and 136764 transitions. [2023-04-01 20:56:18,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 20:56:18,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 337.0) internal successors, (1685), 4 states have internal predecessors, (1685), 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 1746 [2023-04-01 20:56:18,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:56:18,645 INFO L225 Difference]: With dead ends: 86410 [2023-04-01 20:56:18,645 INFO L226 Difference]: Without dead ends: 57973 [2023-04-01 20:56:18,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1758 GetRequests, 1746 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 20:56:18,716 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 5965 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 11036 mSolverCounterSat, 3576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5965 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 14612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3576 IncrementalHoareTripleChecker+Valid, 11036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-04-01 20:56:18,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5965 Valid, 1880 Invalid, 14612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3576 Valid, 11036 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-04-01 20:56:18,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57973 states. [2023-04-01 20:56:19,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57973 to 57299. [2023-04-01 20:56:20,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57299 states, 55115 states have (on average 1.265317971514107) internal successors, (69738), 55420 states have internal predecessors, (69738), 242 states have call successors, (242), 242 states have call predecessors, (242), 1941 states have return successors, (15633), 1636 states have call predecessors, (15633), 241 states have call successors, (15633) [2023-04-01 20:56:20,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57299 states to 57299 states and 85613 transitions. [2023-04-01 20:56:20,105 INFO L78 Accepts]: Start accepts. Automaton has 57299 states and 85613 transitions. Word has length 1746 [2023-04-01 20:56:20,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:56:20,106 INFO L495 AbstractCegarLoop]: Abstraction has 57299 states and 85613 transitions. [2023-04-01 20:56:20,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 337.0) internal successors, (1685), 4 states have internal predecessors, (1685), 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 20:56:20,110 INFO L276 IsEmpty]: Start isEmpty. Operand 57299 states and 85613 transitions. [2023-04-01 20:56:20,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1765 [2023-04-01 20:56:20,234 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:56:20,235 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-04-01 20:56:20,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 20:56:20,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:56:20,442 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:56:20,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:56:20,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1554197018, now seen corresponding path program 1 times [2023-04-01 20:56:20,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:56:20,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814076025] [2023-04-01 20:56:20,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:56:20,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:56:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:22,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:56:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:22,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:56:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:22,624 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:56:22,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:56:22,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814076025] [2023-04-01 20:56:22,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814076025] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:56:22,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 20:56:22,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 20:56:22,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675956097] [2023-04-01 20:56:22,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:56:22,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 20:56:22,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:56:22,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 20:56:22,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:56:22,629 INFO L87 Difference]: Start difference. First operand 57299 states and 85613 transitions. Second operand has 7 states, 6 states have (on average 291.8333333333333) internal successors, (1751), 4 states have internal predecessors, (1751), 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 20:56:32,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:56:32,238 INFO L93 Difference]: Finished difference Result 165377 states and 269863 transitions. [2023-04-01 20:56:32,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 20:56:32,240 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 291.8333333333333) internal successors, (1751), 4 states have internal predecessors, (1751), 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 1764 [2023-04-01 20:56:32,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:56:32,609 INFO L225 Difference]: With dead ends: 165377 [2023-04-01 20:56:32,609 INFO L226 Difference]: Without dead ends: 108084 [2023-04-01 20:56:32,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:56:32,687 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 13604 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 11075 mSolverCounterSat, 2699 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13604 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 13774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2699 IncrementalHoareTripleChecker+Valid, 11075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-04-01 20:56:32,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13604 Valid, 935 Invalid, 13774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2699 Valid, 11075 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-04-01 20:56:32,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108084 states. [2023-04-01 20:56:34,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108084 to 107852. [2023-04-01 20:56:34,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107852 states, 104445 states have (on average 1.2292498444157212) internal successors, (128389), 104935 states have internal predecessors, (128389), 466 states have call successors, (466), 466 states have call predecessors, (466), 2940 states have return successors, (34988), 2450 states have call predecessors, (34988), 465 states have call successors, (34988) [2023-04-01 20:56:34,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107852 states to 107852 states and 163843 transitions. [2023-04-01 20:56:34,882 INFO L78 Accepts]: Start accepts. Automaton has 107852 states and 163843 transitions. Word has length 1764 [2023-04-01 20:56:34,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:56:34,882 INFO L495 AbstractCegarLoop]: Abstraction has 107852 states and 163843 transitions. [2023-04-01 20:56:34,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 291.8333333333333) internal successors, (1751), 4 states have internal predecessors, (1751), 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 20:56:34,883 INFO L276 IsEmpty]: Start isEmpty. Operand 107852 states and 163843 transitions. [2023-04-01 20:56:35,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1875 [2023-04-01 20:56:35,401 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:56:35,402 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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] [2023-04-01 20:56:35,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 20:56:35,402 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:56:35,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:56:35,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1529241318, now seen corresponding path program 1 times [2023-04-01 20:56:35,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:56:35,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974259811] [2023-04-01 20:56:35,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:56:35,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:56:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:37,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:56:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:37,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:56:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:37,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-01 20:56:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:37,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-01 20:56:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:37,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-01 20:56:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:37,235 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 187 proven. 8 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-04-01 20:56:37,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:56:37,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974259811] [2023-04-01 20:56:37,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974259811] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:56:37,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795526734] [2023-04-01 20:56:37,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:56:37,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:56:37,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:56:37,243 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:56:37,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 20:56:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:37,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 2452 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 20:56:37,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:56:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-04-01 20:56:37,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:56:37,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795526734] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:56:37,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:56:37,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2023-04-01 20:56:37,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618926507] [2023-04-01 20:56:37,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:56:37,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:56:37,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:56:37,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:56:37,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 20:56:37,828 INFO L87 Difference]: Start difference. First operand 107852 states and 163843 transitions. Second operand has 3 states, 3 states have (on average 572.3333333333334) internal successors, (1717), 3 states have internal predecessors, (1717), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 20:56:44,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:56:44,755 INFO L93 Difference]: Finished difference Result 270332 states and 416244 transitions. [2023-04-01 20:56:44,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:56:44,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 572.3333333333334) internal successors, (1717), 3 states have internal predecessors, (1717), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 1874 [2023-04-01 20:56:44,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:56:45,393 INFO L225 Difference]: With dead ends: 270332 [2023-04-01 20:56:45,393 INFO L226 Difference]: Without dead ends: 162486 [2023-04-01 20:56:45,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1889 GetRequests, 1885 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 20:56:45,510 INFO L413 NwaCegarLoop]: 3890 mSDtfsCounter, 1849 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 5797 mSolverCounterSat, 1120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1849 SdHoareTripleChecker+Valid, 4292 SdHoareTripleChecker+Invalid, 6917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1120 IncrementalHoareTripleChecker+Valid, 5797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-04-01 20:56:45,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1849 Valid, 4292 Invalid, 6917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1120 Valid, 5797 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-04-01 20:56:45,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162486 states. [2023-04-01 20:56:47,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162486 to 162473. [2023-04-01 20:56:48,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162473 states, 158209 states have (on average 1.1802299489915238) internal successors, (186723), 158790 states have internal predecessors, (186723), 714 states have call successors, (714), 714 states have call predecessors, (714), 3549 states have return successors, (48779), 2968 states have call predecessors, (48779), 713 states have call successors, (48779) [2023-04-01 20:56:48,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162473 states to 162473 states and 236216 transitions. [2023-04-01 20:56:48,814 INFO L78 Accepts]: Start accepts. Automaton has 162473 states and 236216 transitions. Word has length 1874 [2023-04-01 20:56:48,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:56:48,814 INFO L495 AbstractCegarLoop]: Abstraction has 162473 states and 236216 transitions. [2023-04-01 20:56:48,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 572.3333333333334) internal successors, (1717), 3 states have internal predecessors, (1717), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-01 20:56:48,815 INFO L276 IsEmpty]: Start isEmpty. Operand 162473 states and 236216 transitions. [2023-04-01 20:56:49,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1884 [2023-04-01 20:56:49,128 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:56:49,128 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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] [2023-04-01 20:56:49,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 20:56:49,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 20:56:49,335 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:56:49,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:56:49,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2048985089, now seen corresponding path program 1 times [2023-04-01 20:56:49,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:56:49,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610677673] [2023-04-01 20:56:49,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:56:49,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:56:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:50,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:56:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:50,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:56:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:50,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-01 20:56:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:50,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-01 20:56:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:50,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-01 20:56:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:50,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-01 20:56:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 199 proven. 53 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-04-01 20:56:50,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:56:50,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610677673] [2023-04-01 20:56:50,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610677673] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:56:50,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669259123] [2023-04-01 20:56:50,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:56:50,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:56:50,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:56:50,954 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:56:50,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 20:56:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:56:51,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 2523 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:56:51,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:56:51,547 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-04-01 20:56:51,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:56:51,706 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 200 proven. 56 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-04-01 20:56:51,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669259123] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:56:51,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:56:51,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 20:56:51,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989083426] [2023-04-01 20:56:51,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:56:51,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:56:51,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:56:51,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:56:51,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:56:51,712 INFO L87 Difference]: Start difference. First operand 162473 states and 236216 transitions. Second operand has 12 states, 12 states have (on average 159.66666666666666) internal successors, (1916), 10 states have internal predecessors, (1916), 5 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 20:57:15,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:57:15,127 INFO L93 Difference]: Finished difference Result 379483 states and 605111 transitions. [2023-04-01 20:57:15,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-04-01 20:57:15,128 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 159.66666666666666) internal successors, (1916), 10 states have internal predecessors, (1916), 5 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 1883 [2023-04-01 20:57:15,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:57:16,194 INFO L225 Difference]: With dead ends: 379483 [2023-04-01 20:57:16,194 INFO L226 Difference]: Without dead ends: 217016 [2023-04-01 20:57:16,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3903 GetRequests, 3830 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1838 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=873, Invalid=4529, Unknown=0, NotChecked=0, Total=5402 [2023-04-01 20:57:16,446 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 24621 mSDsluCounter, 2311 mSDsCounter, 0 mSdLazyCounter, 31863 mSolverCounterSat, 8240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24630 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 40103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8240 IncrementalHoareTripleChecker+Valid, 31863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:57:16,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24630 Valid, 2732 Invalid, 40103 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8240 Valid, 31863 Invalid, 0 Unknown, 0 Unchecked, 19.3s Time] [2023-04-01 20:57:16,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217016 states. [2023-04-01 20:57:19,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217016 to 213916. [2023-04-01 20:57:19,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213916 states, 208117 states have (on average 1.0762984282879342) internal successors, (223996), 208944 states have internal predecessors, (223996), 938 states have call successors, (938), 938 states have call predecessors, (938), 4860 states have return successors, (37119), 4033 states have call predecessors, (37119), 937 states have call successors, (37119) [2023-04-01 20:57:20,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213916 states to 213916 states and 262053 transitions. [2023-04-01 20:57:20,655 INFO L78 Accepts]: Start accepts. Automaton has 213916 states and 262053 transitions. Word has length 1883 [2023-04-01 20:57:20,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:57:20,655 INFO L495 AbstractCegarLoop]: Abstraction has 213916 states and 262053 transitions. [2023-04-01 20:57:20,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 159.66666666666666) internal successors, (1916), 10 states have internal predecessors, (1916), 5 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 20:57:20,656 INFO L276 IsEmpty]: Start isEmpty. Operand 213916 states and 262053 transitions. [2023-04-01 20:57:21,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1921 [2023-04-01 20:57:21,191 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:57:21,192 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-04-01 20:57:21,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 20:57:21,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:57:21,412 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:57:21,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:57:21,412 INFO L85 PathProgramCache]: Analyzing trace with hash -109875494, now seen corresponding path program 1 times [2023-04-01 20:57:21,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:57:21,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491205649] [2023-04-01 20:57:21,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:57:21,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:57:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:23,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:57:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:23,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:57:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:23,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-01 20:57:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:23,481 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 227 proven. 105 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 20:57:23,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:57:23,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491205649] [2023-04-01 20:57:23,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491205649] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:57:23,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211779227] [2023-04-01 20:57:23,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:57:23,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:57:23,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:57:23,494 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:57:23,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 20:57:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:24,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 2390 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 20:57:24,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:57:24,276 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 335 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:57:24,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:57:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 335 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:57:24,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211779227] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:57:24,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:57:24,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 20:57:24,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155829278] [2023-04-01 20:57:24,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:57:24,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 20:57:24,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:57:24,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 20:57:24,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 20:57:24,614 INFO L87 Difference]: Start difference. First operand 213916 states and 262053 transitions. Second operand has 11 states, 11 states have (on average 195.27272727272728) internal successors, (2148), 9 states have internal predecessors, (2148), 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 20:57:39,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:57:39,914 INFO L93 Difference]: Finished difference Result 587600 states and 744543 transitions. [2023-04-01 20:57:39,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-01 20:57:39,915 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 195.27272727272728) internal successors, (2148), 9 states have internal predecessors, (2148), 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 1920 [2023-04-01 20:57:39,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:57:41,564 INFO L225 Difference]: With dead ends: 587600 [2023-04-01 20:57:41,565 INFO L226 Difference]: Without dead ends: 373690 [2023-04-01 20:57:41,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3899 GetRequests, 3862 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=279, Invalid=1053, Unknown=0, NotChecked=0, Total=1332 [2023-04-01 20:57:41,795 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 26068 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 18226 mSolverCounterSat, 7162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26068 SdHoareTripleChecker+Valid, 2073 SdHoareTripleChecker+Invalid, 25388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7162 IncrementalHoareTripleChecker+Valid, 18226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2023-04-01 20:57:41,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26068 Valid, 2073 Invalid, 25388 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7162 Valid, 18226 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2023-04-01 20:57:42,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373690 states. [2023-04-01 20:57:46,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373690 to 326581. [2023-04-01 20:57:46,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326581 states, 319652 states have (on average 1.049704053157809) internal successors, (335540), 320523 states have internal predecessors, (335540), 1458 states have call successors, (1458), 1458 states have call predecessors, (1458), 5470 states have return successors, (39964), 4599 states have call predecessors, (39964), 1457 states have call successors, (39964) [2023-04-01 20:57:47,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326581 states to 326581 states and 376962 transitions. [2023-04-01 20:57:47,773 INFO L78 Accepts]: Start accepts. Automaton has 326581 states and 376962 transitions. Word has length 1920 [2023-04-01 20:57:47,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:57:47,773 INFO L495 AbstractCegarLoop]: Abstraction has 326581 states and 376962 transitions. [2023-04-01 20:57:47,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 195.27272727272728) internal successors, (2148), 9 states have internal predecessors, (2148), 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 20:57:47,774 INFO L276 IsEmpty]: Start isEmpty. Operand 326581 states and 376962 transitions. [2023-04-01 20:57:48,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2086 [2023-04-01 20:57:48,362 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:57:48,363 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] [2023-04-01 20:57:48,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 20:57:48,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:57:48,570 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:57:48,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:57:48,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1501161236, now seen corresponding path program 1 times [2023-04-01 20:57:48,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:57:48,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112253057] [2023-04-01 20:57:48,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:57:48,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:57:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:52,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:57:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:52,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:57:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:52,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-01 20:57:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:52,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-04-01 20:57:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:52,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-04-01 20:57:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:52,838 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 389 proven. 4 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2023-04-01 20:57:52,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:57:52,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112253057] [2023-04-01 20:57:52,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112253057] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:57:52,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137113732] [2023-04-01 20:57:52,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:57:52,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:57:52,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:57:52,840 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:57:52,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 20:57:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:57:53,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 2670 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-01 20:57:53,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:57:55,018 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 20:57:55,018 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 20:57:55,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137113732] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 20:57:55,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 20:57:55,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-04-01 20:57:55,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682881448] [2023-04-01 20:57:55,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 20:57:55,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 20:57:55,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:57:55,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 20:57:55,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:57:55,022 INFO L87 Difference]: Start difference. First operand 326581 states and 376962 transitions. Second operand has 3 states, 3 states have (on average 616.6666666666666) internal successors, (1850), 3 states have internal predecessors, (1850), 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 20:58:01,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:58:01,918 INFO L93 Difference]: Finished difference Result 655183 states and 756717 transitions. [2023-04-01 20:58:01,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 20:58:01,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 616.6666666666666) internal successors, (1850), 3 states have internal predecessors, (1850), 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 2085 [2023-04-01 20:58:01,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:58:03,502 INFO L225 Difference]: With dead ends: 655183 [2023-04-01 20:58:03,502 INFO L226 Difference]: Without dead ends: 328608 [2023-04-01 20:58:03,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2106 GetRequests, 2101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-01 20:58:03,734 INFO L413 NwaCegarLoop]: 1095 mSDtfsCounter, 555 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 5568 mSolverCounterSat, 955 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 6523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 955 IncrementalHoareTripleChecker+Valid, 5568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-04-01 20:58:03,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 1300 Invalid, 6523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [955 Valid, 5568 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-04-01 20:58:04,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328608 states. [2023-04-01 20:58:08,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328608 to 322907. [2023-04-01 20:58:08,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322907 states, 316082 states have (on average 1.03976183395448) internal successors, (328650), 316938 states have internal predecessors, (328650), 1442 states have call successors, (1442), 1442 states have call predecessors, (1442), 5382 states have return successors, (33642), 4526 states have call predecessors, (33642), 1441 states have call successors, (33642) [2023-04-01 20:58:08,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322907 states to 322907 states and 363734 transitions. [2023-04-01 20:58:08,974 INFO L78 Accepts]: Start accepts. Automaton has 322907 states and 363734 transitions. Word has length 2085 [2023-04-01 20:58:08,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 20:58:08,976 INFO L495 AbstractCegarLoop]: Abstraction has 322907 states and 363734 transitions. [2023-04-01 20:58:08,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 616.6666666666666) internal successors, (1850), 3 states have internal predecessors, (1850), 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 20:58:08,976 INFO L276 IsEmpty]: Start isEmpty. Operand 322907 states and 363734 transitions. [2023-04-01 20:58:09,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2575 [2023-04-01 20:58:09,636 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 20:58:09,638 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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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] [2023-04-01 20:58:09,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 20:58:09,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:58:09,845 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 20:58:09,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 20:58:09,846 INFO L85 PathProgramCache]: Analyzing trace with hash -181252583, now seen corresponding path program 1 times [2023-04-01 20:58:09,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 20:58:09,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713896613] [2023-04-01 20:58:09,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:58:09,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 20:58:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:14,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 20:58:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:14,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 20:58:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:15,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:58:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:16,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:58:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:16,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2023-04-01 20:58:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:16,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 20:58:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:16,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1194 backedges. 870 proven. 318 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 20:58:16,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 20:58:16,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713896613] [2023-04-01 20:58:16,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713896613] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 20:58:16,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028170483] [2023-04-01 20:58:16,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 20:58:16,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 20:58:16,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 20:58:16,310 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 20:58:16,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 20:58:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 20:58:16,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 3130 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 20:58:16,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 20:58:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1194 backedges. 1189 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:58:17,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 20:58:18,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1194 backedges. 1189 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 20:58:18,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028170483] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 20:58:18,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 20:58:18,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 20:58:18,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194349538] [2023-04-01 20:58:18,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 20:58:18,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 20:58:18,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 20:58:18,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 20:58:18,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-04-01 20:58:18,017 INFO L87 Difference]: Start difference. First operand 322907 states and 363734 transitions. Second operand has 12 states, 12 states have (on average 286.8333333333333) internal successors, (3442), 10 states have internal predecessors, (3442), 8 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (17), 7 states have call predecessors, (17), 8 states have call successors, (17) [2023-04-01 20:58:46,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 20:58:46,177 INFO L93 Difference]: Finished difference Result 864505 states and 977444 transitions. [2023-04-01 20:58:46,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-04-01 20:58:46,178 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 286.8333333333333) internal successors, (3442), 10 states have internal predecessors, (3442), 8 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (17), 7 states have call predecessors, (17), 8 states have call successors, (17) Word has length 2574 [2023-04-01 20:58:46,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 20:58:47,549 INFO L225 Difference]: With dead ends: 864505 [2023-04-01 20:58:47,549 INFO L226 Difference]: Without dead ends: 531841 [2023-04-01 20:58:47,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5255 GetRequests, 5197 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=595, Invalid=2711, Unknown=0, NotChecked=0, Total=3306 [2023-04-01 20:58:47,887 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 15499 mSDsluCounter, 2289 mSDsCounter, 0 mSdLazyCounter, 47182 mSolverCounterSat, 6559 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15499 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 53741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6559 IncrementalHoareTripleChecker+Valid, 47182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2023-04-01 20:58:47,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15499 Valid, 2803 Invalid, 53741 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6559 Valid, 47182 Invalid, 0 Unknown, 0 Unchecked, 22.3s Time] [2023-04-01 20:58:48,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531841 states. [2023-04-01 20:58:54,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531841 to 475810. [2023-04-01 20:58:55,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475810 states, 467910 states have (on average 1.0166912440426579) internal successors, (475720), 468744 states have internal predecessors, (475720), 2154 states have call successors, (2154), 2154 states have call predecessors, (2154), 5745 states have return successors, (34061), 4911 states have call predecessors, (34061), 2153 states have call successors, (34061)