/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/Problem06_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 21:17:19,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 21:17:19,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 21:17:19,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 21:17:19,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 21:17:19,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 21:17:19,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 21:17:19,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 21:17:19,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 21:17:19,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 21:17:19,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 21:17:19,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 21:17:19,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 21:17:19,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 21:17:19,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 21:17:19,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 21:17:19,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 21:17:19,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 21:17:19,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 21:17:19,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 21:17:19,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 21:17:19,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 21:17:19,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 21:17:19,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 21:17:19,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 21:17:19,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 21:17:19,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 21:17:19,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 21:17:19,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 21:17:19,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 21:17:19,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 21:17:19,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 21:17:19,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 21:17:19,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 21:17:19,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 21:17:19,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 21:17:19,874 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 21:17:19,902 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 21:17:19,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 21:17:19,902 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 21:17:19,903 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 21:17:19,904 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 21:17:19,904 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 21:17:19,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 21:17:19,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 21:17:19,905 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 21:17:19,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 21:17:19,906 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 21:17:19,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 21:17:19,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 21:17:19,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 21:17:19,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 21:17:19,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 21:17:19,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 21:17:19,906 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 21:17:19,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 21:17:19,907 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 21:17:19,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 21:17:19,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 21:17:19,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 21:17:19,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 21:17:19,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 21:17:19,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 21:17:19,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 21:17:19,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 21:17:19,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 21:17:19,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 21:17:19,908 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 21:17:19,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 21:17:19,908 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 21:17:19,909 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 21:17:19,909 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 21:17:19,909 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 21:17:20,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 21:17:20,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 21:17:20,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 21:17:20,159 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 21:17:20,162 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 21:17:20,163 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem06_label54.c [2023-04-01 21:17:21,337 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 21:17:21,915 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 21:17:21,915 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem06_label54.c [2023-04-01 21:17:21,968 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe3f419d7/5947a0136fba4302a6a14aed2793c83d/FLAG530f22b75 [2023-04-01 21:17:21,984 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe3f419d7/5947a0136fba4302a6a14aed2793c83d [2023-04-01 21:17:21,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 21:17:21,988 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 21:17:21,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 21:17:21,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 21:17:21,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 21:17:21,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 09:17:21" (1/1) ... [2023-04-01 21:17:21,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35adbab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:17:21, skipping insertion in model container [2023-04-01 21:17:21,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 09:17:21" (1/1) ... [2023-04-01 21:17:22,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 21:17:22,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 21:17:23,532 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/Problem06_label54.c[334673,334686] [2023-04-01 21:17:23,548 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 21:17:23,560 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 21:17:24,376 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/Problem06_label54.c[334673,334686] [2023-04-01 21:17:24,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 21:17:24,422 INFO L208 MainTranslator]: Completed translation [2023-04-01 21:17:24,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:17:24 WrapperNode [2023-04-01 21:17:24,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 21:17:24,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 21:17:24,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 21:17:24,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 21:17:24,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:17:24" (1/1) ... [2023-04-01 21:17:24,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:17:24" (1/1) ... [2023-04-01 21:17:24,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:17:24" (1/1) ... [2023-04-01 21:17:24,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:17:24" (1/1) ... [2023-04-01 21:17:24,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:17:24" (1/1) ... [2023-04-01 21:17:24,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:17:24" (1/1) ... [2023-04-01 21:17:24,748 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:17:24" (1/1) ... [2023-04-01 21:17:24,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:17:24" (1/1) ... [2023-04-01 21:17:24,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 21:17:24,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 21:17:24,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 21:17:24,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 21:17:24,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:17:24" (1/1) ... [2023-04-01 21:17:24,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 21:17:24,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:17:24,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 21:17:24,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 21:17:24,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 21:17:24,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 21:17:24,975 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 21:17:24,975 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 21:17:24,975 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 21:17:24,975 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 21:17:24,975 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 21:17:24,975 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-01 21:17:24,975 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 21:17:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 21:17:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 21:17:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 21:17:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 21:17:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-01 21:17:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 21:17:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 21:17:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 21:17:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 21:17:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 21:17:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 21:17:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 21:17:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 21:17:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 21:17:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 21:17:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 21:17:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 21:17:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 21:17:25,090 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 21:17:25,093 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 21:17:30,833 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 21:17:30,851 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 21:17:30,852 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 21:17:30,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 09:17:30 BoogieIcfgContainer [2023-04-01 21:17:30,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 21:17:30,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 21:17:30,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 21:17:30,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 21:17:30,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 09:17:21" (1/3) ... [2023-04-01 21:17:30,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51bab2f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 09:17:30, skipping insertion in model container [2023-04-01 21:17:30,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:17:24" (2/3) ... [2023-04-01 21:17:30,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51bab2f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 09:17:30, skipping insertion in model container [2023-04-01 21:17:30,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 09:17:30" (3/3) ... [2023-04-01 21:17:30,863 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem06_label54.c [2023-04-01 21:17:30,880 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 21:17:30,880 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 21:17:30,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 21:17:30,956 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;@4e14aa50, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 21:17:30,956 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 21:17:30,966 INFO L276 IsEmpty]: Start isEmpty. Operand has 1315 states, 1299 states have (on average 1.8498845265588915) internal successors, (2403), 1300 states have internal predecessors, (2403), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-01 21:17:31,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 980 [2023-04-01 21:17:31,018 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:17:31,019 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] [2023-04-01 21:17:31,020 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:17:31,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:17:31,025 INFO L85 PathProgramCache]: Analyzing trace with hash -736938466, now seen corresponding path program 1 times [2023-04-01 21:17:31,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:17:31,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459978226] [2023-04-01 21:17:31,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:17:31,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:17:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:17:36,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:17:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:17:36,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:17:36,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:17:36,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459978226] [2023-04-01 21:17:36,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459978226] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:17:36,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 21:17:36,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 21:17:36,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056188242] [2023-04-01 21:17:36,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:17:36,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 21:17:36,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:17:36,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 21:17:36,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 21:17:36,990 INFO L87 Difference]: Start difference. First operand has 1315 states, 1299 states have (on average 1.8498845265588915) internal successors, (2403), 1300 states have internal predecessors, (2403), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 5 states, 4 states have (on average 242.75) internal successors, (971), 3 states have internal predecessors, (971), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 21:17:45,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:17:45,959 INFO L93 Difference]: Finished difference Result 3767 states and 7040 transitions. [2023-04-01 21:17:45,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 21:17:45,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 242.75) internal successors, (971), 3 states have internal predecessors, (971), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 979 [2023-04-01 21:17:45,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:17:45,996 INFO L225 Difference]: With dead ends: 3767 [2023-04-01 21:17:45,997 INFO L226 Difference]: Without dead ends: 2388 [2023-04-01 21:17:46,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 21:17:46,011 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 4046 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 4855 mSolverCounterSat, 2612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4046 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 7467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2612 IncrementalHoareTripleChecker+Valid, 4855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-04-01 21:17:46,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4046 Valid, 226 Invalid, 7467 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2612 Valid, 4855 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-04-01 21:17:46,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2023-04-01 21:17:46,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2332. [2023-04-01 21:17:46,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2332 states, 2298 states have (on average 1.8224543080939948) internal successors, (4188), 2300 states have internal predecessors, (4188), 12 states have call successors, (12), 12 states have call predecessors, (12), 21 states have return successors, (31), 19 states have call predecessors, (31), 11 states have call successors, (31) [2023-04-01 21:17:46,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 4231 transitions. [2023-04-01 21:17:46,141 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 4231 transitions. Word has length 979 [2023-04-01 21:17:46,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:17:46,144 INFO L495 AbstractCegarLoop]: Abstraction has 2332 states and 4231 transitions. [2023-04-01 21:17:46,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 242.75) internal successors, (971), 3 states have internal predecessors, (971), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 21:17:46,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 4231 transitions. [2023-04-01 21:17:46,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2023-04-01 21:17:46,175 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:17:46,176 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 21:17:46,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 21:17:46,177 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:17:46,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:17:46,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1194829701, now seen corresponding path program 1 times [2023-04-01 21:17:46,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:17:46,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765028214] [2023-04-01 21:17:46,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:17:46,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:17:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:17:48,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:17:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:17:48,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:17:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:17:48,184 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:17:48,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:17:48,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765028214] [2023-04-01 21:17:48,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765028214] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:17:48,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 21:17:48,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 21:17:48,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160310398] [2023-04-01 21:17:48,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:17:48,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 21:17:48,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:17:48,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 21:17:48,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 21:17:48,192 INFO L87 Difference]: Start difference. First operand 2332 states and 4231 transitions. Second operand has 7 states, 6 states have (on average 163.5) internal successors, (981), 4 states have internal predecessors, (981), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 21:17:56,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:17:56,282 INFO L93 Difference]: Finished difference Result 6918 states and 12648 transitions. [2023-04-01 21:17:56,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 21:17:56,290 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 163.5) internal successors, (981), 4 states have internal predecessors, (981), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 991 [2023-04-01 21:17:56,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:17:56,318 INFO L225 Difference]: With dead ends: 6918 [2023-04-01 21:17:56,321 INFO L226 Difference]: Without dead ends: 4592 [2023-04-01 21:17:56,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 21:17:56,340 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 7010 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 6761 mSolverCounterSat, 1927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7010 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 8688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1927 IncrementalHoareTripleChecker+Valid, 6761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-04-01 21:17:56,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7010 Valid, 662 Invalid, 8688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1927 Valid, 6761 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-04-01 21:17:56,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4592 states. [2023-04-01 21:17:56,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4592 to 4532. [2023-04-01 21:17:56,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4532 states, 4448 states have (on average 1.6380395683453237) internal successors, (7286), 4456 states have internal predecessors, (7286), 22 states have call successors, (22), 22 states have call predecessors, (22), 61 states have return successors, (141), 53 states have call predecessors, (141), 21 states have call successors, (141) [2023-04-01 21:17:56,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4532 states to 4532 states and 7449 transitions. [2023-04-01 21:17:56,496 INFO L78 Accepts]: Start accepts. Automaton has 4532 states and 7449 transitions. Word has length 991 [2023-04-01 21:17:56,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:17:56,496 INFO L495 AbstractCegarLoop]: Abstraction has 4532 states and 7449 transitions. [2023-04-01 21:17:56,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 163.5) internal successors, (981), 4 states have internal predecessors, (981), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 21:17:56,497 INFO L276 IsEmpty]: Start isEmpty. Operand 4532 states and 7449 transitions. [2023-04-01 21:17:56,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1000 [2023-04-01 21:17:56,513 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:17:56,513 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 21:17:56,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 21:17:56,514 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:17:56,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:17:56,514 INFO L85 PathProgramCache]: Analyzing trace with hash -237316252, now seen corresponding path program 1 times [2023-04-01 21:17:56,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:17:56,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734823271] [2023-04-01 21:17:56,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:17:56,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:17:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:17:58,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:17:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:17:58,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:17:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:17:58,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-01 21:17:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:17:58,507 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 21:17:58,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:17:58,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734823271] [2023-04-01 21:17:58,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734823271] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:17:58,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958123534] [2023-04-01 21:17:58,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:17:58,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:17:58,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:17:58,515 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 21:17:58,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 21:17:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:17:59,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 2354 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 21:17:59,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:17:59,417 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-01 21:17:59,417 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:17:59,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958123534] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:17:59,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:17:59,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 21:17:59,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406912376] [2023-04-01 21:17:59,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:17:59,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 21:17:59,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:17:59,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 21:17:59,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 21:17:59,422 INFO L87 Difference]: Start difference. First operand 4532 states and 7449 transitions. Second operand has 5 states, 5 states have (on average 195.8) internal successors, (979), 4 states have internal predecessors, (979), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 21:18:04,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:18:04,215 INFO L93 Difference]: Finished difference Result 13606 states and 22953 transitions. [2023-04-01 21:18:04,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 21:18:04,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 195.8) internal successors, (979), 4 states have internal predecessors, (979), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 999 [2023-04-01 21:18:04,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:18:04,260 INFO L225 Difference]: With dead ends: 13606 [2023-04-01 21:18:04,260 INFO L226 Difference]: Without dead ends: 9080 [2023-04-01 21:18:04,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1011 GetRequests, 999 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-04-01 21:18:04,276 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 4437 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 5103 mSolverCounterSat, 2244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4437 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 7347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2244 IncrementalHoareTripleChecker+Valid, 5103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-04-01 21:18:04,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4437 Valid, 852 Invalid, 7347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2244 Valid, 5103 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-04-01 21:18:04,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9080 states. [2023-04-01 21:18:04,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9080 to 8867. [2023-04-01 21:18:04,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8867 states, 8653 states have (on average 1.5436264879232635) internal successors, (13357), 8683 states have internal predecessors, (13357), 42 states have call successors, (42), 42 states have call predecessors, (42), 171 states have return successors, (603), 141 states have call predecessors, (603), 41 states have call successors, (603) [2023-04-01 21:18:04,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8867 states to 8867 states and 14002 transitions. [2023-04-01 21:18:04,583 INFO L78 Accepts]: Start accepts. Automaton has 8867 states and 14002 transitions. Word has length 999 [2023-04-01 21:18:04,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:18:04,583 INFO L495 AbstractCegarLoop]: Abstraction has 8867 states and 14002 transitions. [2023-04-01 21:18:04,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 195.8) internal successors, (979), 4 states have internal predecessors, (979), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 21:18:04,584 INFO L276 IsEmpty]: Start isEmpty. Operand 8867 states and 14002 transitions. [2023-04-01 21:18:04,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2023-04-01 21:18:04,614 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:18:04,614 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 21:18:04,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 21:18:04,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:18:04,825 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:18:04,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:18:04,826 INFO L85 PathProgramCache]: Analyzing trace with hash -955509411, now seen corresponding path program 1 times [2023-04-01 21:18:04,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:18:04,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987228792] [2023-04-01 21:18:04,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:18:04,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:18:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:18:06,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:18:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:18:06,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:18:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:18:06,272 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 21:18:06,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:18:06,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987228792] [2023-04-01 21:18:06,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987228792] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:18:06,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 21:18:06,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 21:18:06,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275776877] [2023-04-01 21:18:06,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:18:06,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 21:18:06,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:18:06,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 21:18:06,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 21:18:06,279 INFO L87 Difference]: Start difference. First operand 8867 states and 14002 transitions. Second operand has 7 states, 6 states have (on average 164.66666666666666) internal successors, (988), 4 states have internal predecessors, (988), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 21:18:15,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:18:15,101 INFO L93 Difference]: Finished difference Result 27252 states and 45263 transitions. [2023-04-01 21:18:15,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 21:18:15,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 164.66666666666666) internal successors, (988), 4 states have internal predecessors, (988), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 998 [2023-04-01 21:18:15,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:18:15,173 INFO L225 Difference]: With dead ends: 27252 [2023-04-01 21:18:15,173 INFO L226 Difference]: Without dead ends: 18391 [2023-04-01 21:18:15,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 21:18:15,198 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 4495 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 9548 mSolverCounterSat, 1475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4495 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 11023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1475 IncrementalHoareTripleChecker+Valid, 9548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-04-01 21:18:15,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4495 Valid, 758 Invalid, 11023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1475 Valid, 9548 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-04-01 21:18:15,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18391 states. [2023-04-01 21:18:15,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18391 to 17983. [2023-04-01 21:18:15,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17983 states, 17343 states have (on average 1.4387360894885544) internal successors, (24952), 17465 states have internal predecessors, (24952), 82 states have call successors, (82), 82 states have call predecessors, (82), 557 states have return successors, (2841), 435 states have call predecessors, (2841), 81 states have call successors, (2841) [2023-04-01 21:18:15,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17983 states to 17983 states and 27875 transitions. [2023-04-01 21:18:15,777 INFO L78 Accepts]: Start accepts. Automaton has 17983 states and 27875 transitions. Word has length 998 [2023-04-01 21:18:15,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:18:15,777 INFO L495 AbstractCegarLoop]: Abstraction has 17983 states and 27875 transitions. [2023-04-01 21:18:15,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 164.66666666666666) internal successors, (988), 4 states have internal predecessors, (988), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 21:18:15,779 INFO L276 IsEmpty]: Start isEmpty. Operand 17983 states and 27875 transitions. [2023-04-01 21:18:15,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2023-04-01 21:18:15,834 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:18:15,835 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 21:18:15,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 21:18:15,839 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:18:15,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:18:15,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1377935225, now seen corresponding path program 1 times [2023-04-01 21:18:15,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:18:15,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339271072] [2023-04-01 21:18:15,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:18:15,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:18:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:18:17,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:18:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:18:17,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:18:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:18:17,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-01 21:18:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:18:17,489 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 37 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 21:18:17,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:18:17,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339271072] [2023-04-01 21:18:17,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339271072] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:18:17,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130551899] [2023-04-01 21:18:17,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:18:17,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:18:17,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:18:17,493 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 21:18:17,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 21:18:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:18:18,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 2357 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 21:18:18,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:18:18,212 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-04-01 21:18:18,212 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:18:18,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130551899] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:18:18,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:18:18,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-04-01 21:18:18,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584759807] [2023-04-01 21:18:18,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:18:18,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 21:18:18,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:18:18,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 21:18:18,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-04-01 21:18:18,216 INFO L87 Difference]: Start difference. First operand 17983 states and 27875 transitions. Second operand has 5 states, 5 states have (on average 198.2) internal successors, (991), 4 states have internal predecessors, (991), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 21:18:23,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:18:23,608 INFO L93 Difference]: Finished difference Result 55597 states and 95544 transitions. [2023-04-01 21:18:23,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 21:18:23,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 198.2) internal successors, (991), 4 states have internal predecessors, (991), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 1022 [2023-04-01 21:18:23,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:18:23,917 INFO L225 Difference]: With dead ends: 55597 [2023-04-01 21:18:23,917 INFO L226 Difference]: Without dead ends: 37620 [2023-04-01 21:18:23,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1034 GetRequests, 1023 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-04-01 21:18:23,973 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 4117 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 5795 mSolverCounterSat, 1792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4117 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 7587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1792 IncrementalHoareTripleChecker+Valid, 5795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-04-01 21:18:23,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4117 Valid, 1047 Invalid, 7587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1792 Valid, 5795 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-04-01 21:18:24,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37620 states. [2023-04-01 21:18:25,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37620 to 36752. [2023-04-01 21:18:25,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36752 states, 35025 states have (on average 1.3333333333333333) internal successors, (46700), 35438 states have internal predecessors, (46700), 162 states have call successors, (162), 162 states have call predecessors, (162), 1564 states have return successors, (10865), 1151 states have call predecessors, (10865), 161 states have call successors, (10865) [2023-04-01 21:18:25,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36752 states to 36752 states and 57727 transitions. [2023-04-01 21:18:25,241 INFO L78 Accepts]: Start accepts. Automaton has 36752 states and 57727 transitions. Word has length 1022 [2023-04-01 21:18:25,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:18:25,241 INFO L495 AbstractCegarLoop]: Abstraction has 36752 states and 57727 transitions. [2023-04-01 21:18:25,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 198.2) internal successors, (991), 4 states have internal predecessors, (991), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 21:18:25,242 INFO L276 IsEmpty]: Start isEmpty. Operand 36752 states and 57727 transitions. [2023-04-01 21:18:25,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1059 [2023-04-01 21:18:25,361 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:18:25,362 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 21:18:25,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 21:18:25,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:18:25,572 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:18:25,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:18:25,573 INFO L85 PathProgramCache]: Analyzing trace with hash 971372552, now seen corresponding path program 1 times [2023-04-01 21:18:25,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:18:25,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320770799] [2023-04-01 21:18:25,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:18:25,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:18:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:18:29,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:18:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:18:29,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:18:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:18:29,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-01 21:18:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:18:29,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-01 21:18:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:18:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 70 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-04-01 21:18:29,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:18:29,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320770799] [2023-04-01 21:18:29,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320770799] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:18:29,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578799474] [2023-04-01 21:18:29,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:18:29,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:18:29,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:18:29,917 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 21:18:29,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 21:18:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:18:30,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 2552 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 21:18:30,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:18:31,613 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-04-01 21:18:31,613 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:18:31,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578799474] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:18:31,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:18:31,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-04-01 21:18:31,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110673288] [2023-04-01 21:18:31,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:18:31,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 21:18:31,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:18:31,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 21:18:31,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 21:18:31,617 INFO L87 Difference]: Start difference. First operand 36752 states and 57727 transitions. Second operand has 3 states, 3 states have (on average 339.6666666666667) internal successors, (1019), 3 states have internal predecessors, (1019), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 21:18:35,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:18:35,503 INFO L93 Difference]: Finished difference Result 90742 states and 145519 transitions. [2023-04-01 21:18:35,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 21:18:35,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 339.6666666666667) internal successors, (1019), 3 states have internal predecessors, (1019), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 1058 [2023-04-01 21:18:35,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:18:35,760 INFO L225 Difference]: With dead ends: 90742 [2023-04-01 21:18:35,761 INFO L226 Difference]: Without dead ends: 53996 [2023-04-01 21:18:35,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1069 GetRequests, 1062 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 21:18:35,856 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 437 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 3304 mSolverCounterSat, 669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 3973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 3304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-01 21:18:35,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 893 Invalid, 3973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [669 Valid, 3304 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-01 21:18:35,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53996 states. [2023-04-01 21:18:37,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53996 to 53930. [2023-04-01 21:18:37,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53930 states, 51687 states have (on average 1.2876158415075358) internal successors, (66553), 52225 states have internal predecessors, (66553), 242 states have call successors, (242), 242 states have call predecessors, (242), 2000 states have return successors, (16963), 1462 states have call predecessors, (16963), 241 states have call successors, (16963) [2023-04-01 21:18:37,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53930 states to 53930 states and 83758 transitions. [2023-04-01 21:18:37,643 INFO L78 Accepts]: Start accepts. Automaton has 53930 states and 83758 transitions. Word has length 1058 [2023-04-01 21:18:37,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:18:37,644 INFO L495 AbstractCegarLoop]: Abstraction has 53930 states and 83758 transitions. [2023-04-01 21:18:37,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 339.6666666666667) internal successors, (1019), 3 states have internal predecessors, (1019), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 21:18:37,644 INFO L276 IsEmpty]: Start isEmpty. Operand 53930 states and 83758 transitions. [2023-04-01 21:18:38,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1145 [2023-04-01 21:18:38,355 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:18:38,355 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 21:18:38,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 21:18:38,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:18:38,565 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:18:38,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:18:38,566 INFO L85 PathProgramCache]: Analyzing trace with hash 548536053, now seen corresponding path program 1 times [2023-04-01 21:18:38,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:18:38,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055319257] [2023-04-01 21:18:38,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:18:38,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:18:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:18:42,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:18:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:18:42,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:18:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:18:42,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-01 21:18:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:18:42,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-01 21:18:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:18:42,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-01 21:18:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:18:42,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-01 21:18:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:18:42,755 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 150 proven. 32 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-04-01 21:18:42,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:18:42,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055319257] [2023-04-01 21:18:42,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055319257] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:18:42,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340755105] [2023-04-01 21:18:42,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:18:42,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:18:42,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:18:42,761 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 21:18:42,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 21:18:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:18:43,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 2947 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 21:18:43,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:18:43,522 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-04-01 21:18:43,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 21:18:43,661 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 193 proven. 24 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-04-01 21:18:43,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340755105] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 21:18:43,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 21:18:43,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2023-04-01 21:18:43,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239186670] [2023-04-01 21:18:43,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 21:18:43,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 21:18:43,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:18:43,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 21:18:43,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-04-01 21:18:43,666 INFO L87 Difference]: Start difference. First operand 53930 states and 83758 transitions. Second operand has 13 states, 13 states have (on average 82.53846153846153) internal successors, (1073), 11 states have internal predecessors, (1073), 4 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 21:19:07,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:19:07,896 INFO L93 Difference]: Finished difference Result 188511 states and 323182 transitions. [2023-04-01 21:19:07,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-04-01 21:19:07,897 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 82.53846153846153) internal successors, (1073), 11 states have internal predecessors, (1073), 4 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 1144 [2023-04-01 21:19:07,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:19:08,633 INFO L225 Difference]: With dead ends: 188511 [2023-04-01 21:19:08,634 INFO L226 Difference]: Without dead ends: 134587 [2023-04-01 21:19:08,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2376 GetRequests, 2325 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=484, Invalid=2168, Unknown=0, NotChecked=0, Total=2652 [2023-04-01 21:19:08,753 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 20263 mSDsluCounter, 1799 mSDsCounter, 0 mSdLazyCounter, 25874 mSolverCounterSat, 3887 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20265 SdHoareTripleChecker+Valid, 2162 SdHoareTripleChecker+Invalid, 29761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3887 IncrementalHoareTripleChecker+Valid, 25874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2023-04-01 21:19:08,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20265 Valid, 2162 Invalid, 29761 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3887 Valid, 25874 Invalid, 0 Unknown, 0 Unchecked, 19.9s Time] [2023-04-01 21:19:08,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134587 states. [2023-04-01 21:19:12,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134587 to 124150. [2023-04-01 21:19:13,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124150 states, 119033 states have (on average 1.222988582997992) internal successors, (145576), 120323 states have internal predecessors, (145576), 593 states have call successors, (593), 557 states have call predecessors, (593), 4523 states have return successors, (43351), 3269 states have call predecessors, (43351), 592 states have call successors, (43351) [2023-04-01 21:19:14,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124150 states to 124150 states and 189520 transitions. [2023-04-01 21:19:14,039 INFO L78 Accepts]: Start accepts. Automaton has 124150 states and 189520 transitions. Word has length 1144 [2023-04-01 21:19:14,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:19:14,039 INFO L495 AbstractCegarLoop]: Abstraction has 124150 states and 189520 transitions. [2023-04-01 21:19:14,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 82.53846153846153) internal successors, (1073), 11 states have internal predecessors, (1073), 4 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 21:19:14,040 INFO L276 IsEmpty]: Start isEmpty. Operand 124150 states and 189520 transitions. [2023-04-01 21:19:14,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1165 [2023-04-01 21:19:14,627 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:19:14,628 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 21:19:14,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 21:19:14,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:19:14,841 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:19:14,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:19:14,842 INFO L85 PathProgramCache]: Analyzing trace with hash -422321289, now seen corresponding path program 1 times [2023-04-01 21:19:14,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:19:14,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746613352] [2023-04-01 21:19:14,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:19:14,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:19:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:19:18,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:19:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:19:18,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:19:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:19:18,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-04-01 21:19:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:19:18,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-01 21:19:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:19:18,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-04-01 21:19:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:19:18,722 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 182 proven. 79 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 21:19:18,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:19:18,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746613352] [2023-04-01 21:19:18,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746613352] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:19:18,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022817786] [2023-04-01 21:19:18,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:19:18,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:19:18,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:19:18,725 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 21:19:18,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 21:19:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:19:19,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 2811 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-01 21:19:19,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:19:19,479 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-04-01 21:19:19,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 21:19:19,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022817786] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 21:19:19,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 21:19:19,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 12 [2023-04-01 21:19:19,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347393410] [2023-04-01 21:19:19,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 21:19:19,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 21:19:19,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:19:19,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 21:19:19,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-04-01 21:19:19,482 INFO L87 Difference]: Start difference. First operand 124150 states and 189520 transitions. Second operand has 5 states, 5 states have (on average 200.0) internal successors, (1000), 4 states have internal predecessors, (1000), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 21:19:28,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:19:28,114 INFO L93 Difference]: Finished difference Result 362075 states and 594580 transitions. [2023-04-01 21:19:28,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 21:19:28,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 200.0) internal successors, (1000), 4 states have internal predecessors, (1000), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 1164 [2023-04-01 21:19:28,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:19:29,570 INFO L225 Difference]: With dead ends: 362075 [2023-04-01 21:19:29,571 INFO L226 Difference]: Without dead ends: 237931 [2023-04-01 21:19:29,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1180 GetRequests, 1169 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-04-01 21:19:29,796 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 4146 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 6290 mSolverCounterSat, 1299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4146 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 7589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1299 IncrementalHoareTripleChecker+Valid, 6290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-04-01 21:19:29,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4146 Valid, 1022 Invalid, 7589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1299 Valid, 6290 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-04-01 21:19:30,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237931 states. [2023-04-01 21:19:36,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237931 to 237100. [2023-04-01 21:19:36,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237100 states, 228119 states have (on average 1.1813483313533726) internal successors, (269488), 230548 states have internal predecessors, (269488), 1134 states have call successors, (1134), 1077 states have call predecessors, (1134), 7846 states have return successors, (83790), 5474 states have call predecessors, (83790), 1133 states have call successors, (83790) [2023-04-01 21:19:37,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237100 states to 237100 states and 354412 transitions. [2023-04-01 21:19:37,824 INFO L78 Accepts]: Start accepts. Automaton has 237100 states and 354412 transitions. Word has length 1164 [2023-04-01 21:19:37,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 21:19:37,824 INFO L495 AbstractCegarLoop]: Abstraction has 237100 states and 354412 transitions. [2023-04-01 21:19:37,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 200.0) internal successors, (1000), 4 states have internal predecessors, (1000), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 21:19:37,825 INFO L276 IsEmpty]: Start isEmpty. Operand 237100 states and 354412 transitions. [2023-04-01 21:19:38,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1188 [2023-04-01 21:19:38,848 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 21:19:38,849 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 21:19:38,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 21:19:39,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:19:39,050 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 21:19:39,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 21:19:39,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1353054519, now seen corresponding path program 1 times [2023-04-01 21:19:39,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 21:19:39,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855364655] [2023-04-01 21:19:39,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:19:39,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 21:19:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:19:41,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 21:19:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:19:41,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 21:19:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:19:42,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-01 21:19:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:19:42,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-01 21:19:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:19:42,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-04-01 21:19:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:19:42,181 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 196 proven. 98 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-04-01 21:19:42,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 21:19:42,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855364655] [2023-04-01 21:19:42,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855364655] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 21:19:42,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199829924] [2023-04-01 21:19:42,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 21:19:42,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 21:19:42,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 21:19:42,185 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 21:19:42,206 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 21:19:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 21:19:42,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 2832 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-01 21:19:42,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 21:19:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 329 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-04-01 21:19:43,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 21:19:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 270 proven. 57 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-04-01 21:19:44,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199829924] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 21:19:44,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 21:19:44,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 21:19:44,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476183732] [2023-04-01 21:19:44,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 21:19:44,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 21:19:44,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 21:19:44,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 21:19:44,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-04-01 21:19:44,701 INFO L87 Difference]: Start difference. First operand 237100 states and 354412 transitions. Second operand has 12 states, 12 states have (on average 106.75) internal successors, (1281), 10 states have internal predecessors, (1281), 5 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 21:20:20,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 21:20:20,105 INFO L93 Difference]: Finished difference Result 831289 states and 1311810 transitions. [2023-04-01 21:20:20,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-04-01 21:20:20,106 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 106.75) internal successors, (1281), 10 states have internal predecessors, (1281), 5 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 1187 [2023-04-01 21:20:20,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 21:20:24,231 INFO L225 Difference]: With dead ends: 831289 [2023-04-01 21:20:24,231 INFO L226 Difference]: Without dead ends: 594195 [2023-04-01 21:20:24,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2518 GetRequests, 2438 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2207 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=969, Invalid=5511, Unknown=0, NotChecked=0, Total=6480 [2023-04-01 21:20:24,609 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 14513 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 26131 mSolverCounterSat, 3730 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14513 SdHoareTripleChecker+Valid, 2418 SdHoareTripleChecker+Invalid, 29861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3730 IncrementalHoareTripleChecker+Valid, 26131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2023-04-01 21:20:24,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14513 Valid, 2418 Invalid, 29861 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3730 Valid, 26131 Invalid, 0 Unknown, 0 Unchecked, 20.6s Time] [2023-04-01 21:20:25,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594195 states.