./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Sunset.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/Sunset.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b6e6a27fda5fa9acea6a4d245576e05450de5374c21de963811f373e2c8febd9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-22 01:31:15,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 01:31:15,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 01:31:15,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 01:31:15,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 01:31:15,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 01:31:15,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 01:31:15,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 01:31:15,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 01:31:15,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 01:31:15,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 01:31:15,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 01:31:15,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 01:31:15,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 01:31:15,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 01:31:15,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 01:31:15,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 01:31:15,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 01:31:15,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 01:31:15,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 01:31:15,927 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 01:31:15,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 01:31:15,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 01:31:15,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 01:31:15,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 01:31:15,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 01:31:15,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 01:31:15,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 01:31:15,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 01:31:15,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 01:31:15,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 01:31:15,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 01:31:15,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 01:31:15,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 01:31:15,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 01:31:15,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 01:31:15,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 01:31:15,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 01:31:15,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 01:31:15,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 01:31:15,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 01:31:15,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 01:31:15,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-22 01:31:15,984 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 01:31:15,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 01:31:15,985 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 01:31:15,985 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 01:31:15,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 01:31:15,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 01:31:15,987 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 01:31:15,987 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-22 01:31:15,987 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-22 01:31:15,988 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-22 01:31:15,989 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-22 01:31:15,989 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-22 01:31:15,989 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-22 01:31:15,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 01:31:15,989 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-22 01:31:15,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 01:31:15,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 01:31:15,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-22 01:31:15,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-22 01:31:15,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-22 01:31:15,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 01:31:15,991 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-22 01:31:15,991 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 01:31:15,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-22 01:31:15,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 01:31:15,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 01:31:15,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 01:31:15,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 01:31:15,993 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-22 01:31:15,993 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6e6a27fda5fa9acea6a4d245576e05450de5374c21de963811f373e2c8febd9 [2022-07-22 01:31:16,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 01:31:16,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 01:31:16,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 01:31:16,301 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 01:31:16,302 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 01:31:16,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Sunset.c [2022-07-22 01:31:16,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c17ef44d8/57722fc3ccc24117b89852f275467424/FLAG5df4df0d1 [2022-07-22 01:31:16,772 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 01:31:16,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Sunset.c [2022-07-22 01:31:16,777 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c17ef44d8/57722fc3ccc24117b89852f275467424/FLAG5df4df0d1 [2022-07-22 01:31:16,786 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c17ef44d8/57722fc3ccc24117b89852f275467424 [2022-07-22 01:31:16,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 01:31:16,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 01:31:16,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 01:31:16,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 01:31:16,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 01:31:16,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:31:16" (1/1) ... [2022-07-22 01:31:16,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ad0cc87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:16, skipping insertion in model container [2022-07-22 01:31:16,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:31:16" (1/1) ... [2022-07-22 01:31:16,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 01:31:16,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 01:31:16,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 01:31:16,905 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 01:31:16,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 01:31:16,925 INFO L208 MainTranslator]: Completed translation [2022-07-22 01:31:16,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:16 WrapperNode [2022-07-22 01:31:16,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 01:31:16,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 01:31:16,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 01:31:16,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 01:31:16,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:16" (1/1) ... [2022-07-22 01:31:16,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:16" (1/1) ... [2022-07-22 01:31:16,975 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2022-07-22 01:31:16,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 01:31:16,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 01:31:16,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 01:31:16,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 01:31:16,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:16" (1/1) ... [2022-07-22 01:31:16,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:16" (1/1) ... [2022-07-22 01:31:16,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:16" (1/1) ... [2022-07-22 01:31:16,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:16" (1/1) ... [2022-07-22 01:31:16,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:16" (1/1) ... [2022-07-22 01:31:16,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:16" (1/1) ... [2022-07-22 01:31:16,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:16" (1/1) ... [2022-07-22 01:31:16,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 01:31:16,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 01:31:16,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 01:31:16,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 01:31:16,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:16" (1/1) ... [2022-07-22 01:31:17,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:17,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:17,028 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:17,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-22 01:31:17,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 01:31:17,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 01:31:17,116 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 01:31:17,118 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 01:31:17,206 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 01:31:17,212 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 01:31:17,213 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 01:31:17,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:31:17 BoogieIcfgContainer [2022-07-22 01:31:17,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 01:31:17,215 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-22 01:31:17,215 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-22 01:31:17,217 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-22 01:31:17,218 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:31:17,218 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.07 01:31:16" (1/3) ... [2022-07-22 01:31:17,219 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55c6ba78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 01:31:17, skipping insertion in model container [2022-07-22 01:31:17,219 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:31:17,219 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:16" (2/3) ... [2022-07-22 01:31:17,220 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55c6ba78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 01:31:17, skipping insertion in model container [2022-07-22 01:31:17,220 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:31:17,220 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:31:17" (3/3) ... [2022-07-22 01:31:17,221 INFO L354 chiAutomizerObserver]: Analyzing ICFG Sunset.c [2022-07-22 01:31:17,274 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-22 01:31:17,274 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-22 01:31:17,274 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-22 01:31:17,274 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-22 01:31:17,275 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-22 01:31:17,275 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-22 01:31:17,275 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-22 01:31:17,275 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-22 01:31:17,279 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:17,293 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-22 01:31:17,294 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:31:17,294 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:31:17,298 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-22 01:31:17,298 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-22 01:31:17,299 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-22 01:31:17,299 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:17,300 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-22 01:31:17,301 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:31:17,301 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:31:17,301 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-22 01:31:17,302 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-22 01:31:17,307 INFO L752 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 3#L13-1true [2022-07-22 01:31:17,307 INFO L754 eck$LassoCheckResult]: Loop: 3#L13-1true assume !!(main_~i~0#1 > 10); 6#L10true assume !(25 == main_~i~0#1); 4#L10-2true assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 3#L13-1true [2022-07-22 01:31:17,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:17,313 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-22 01:31:17,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:31:17,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852185397] [2022-07-22 01:31:17,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:31:17,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:31:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:17,405 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:31:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:17,432 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:31:17,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:17,437 INFO L85 PathProgramCache]: Analyzing trace with hash 40878, now seen corresponding path program 1 times [2022-07-22 01:31:17,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:31:17,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516503348] [2022-07-22 01:31:17,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:31:17,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:31:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:17,457 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:31:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:17,467 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:31:17,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:17,475 INFO L85 PathProgramCache]: Analyzing trace with hash 28699820, now seen corresponding path program 1 times [2022-07-22 01:31:17,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:31:17,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75206654] [2022-07-22 01:31:17,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:31:17,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:31:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:17,487 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:31:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:17,494 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:31:17,603 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:31:17,604 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:31:17,604 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:31:17,604 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:31:17,604 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 01:31:17,604 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:17,605 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:31:17,605 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:31:17,605 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration1_Loop [2022-07-22 01:31:17,605 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:31:17,605 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:31:17,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:17,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:17,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:17,771 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:31:17,772 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 01:31:17,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:17,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:17,777 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:17,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-22 01:31:17,778 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:31:17,779 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:31:17,805 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:31:17,805 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:31:17,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-07-22 01:31:17,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:17,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:17,833 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:17,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-07-22 01:31:17,850 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:31:17,851 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:31:17,873 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:31:17,873 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:31:17,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:17,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:17,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:17,900 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:17,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-22 01:31:17,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:31:17,903 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:31:17,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:17,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:17,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:17,953 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:17,961 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:31:17,961 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:31:17,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-22 01:31:18,016 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 01:31:18,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-07-22 01:31:18,022 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:31:18,022 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:31:18,022 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:31:18,022 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:31:18,022 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 01:31:18,022 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:18,022 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:31:18,022 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:31:18,022 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration1_Loop [2022-07-22 01:31:18,022 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:31:18,022 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:31:18,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:18,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:18,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:18,141 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:31:18,145 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 01:31:18,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:18,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:18,148 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:18,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-07-22 01:31:18,151 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:31:18,158 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:31:18,158 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:31:18,158 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:31:18,158 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:31:18,164 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-22 01:31:18,164 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-22 01:31:18,182 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:31:18,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:18,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:18,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:18,209 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:18,214 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:31:18,221 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:31:18,221 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:31:18,221 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:31:18,221 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:31:18,223 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-22 01:31:18,224 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-22 01:31:18,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-07-22 01:31:18,243 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:31:18,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:18,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:18,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:18,271 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:18,278 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:31:18,285 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:31:18,285 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:31:18,286 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:31:18,286 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-07-22 01:31:18,286 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:31:18,288 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-07-22 01:31:18,288 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:31:18,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-07-22 01:31:18,317 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 01:31:18,321 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-22 01:31:18,321 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-22 01:31:18,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:18,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:18,332 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:18,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-07-22 01:31:18,334 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 01:31:18,335 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 01:31:18,335 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 01:31:18,335 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-07-22 01:31:18,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:18,363 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 01:31:18,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:31:18,391 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:31:18,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:31:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:31:18,405 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:31:18,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:31:18,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:31:18,467 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-22 01:31:18,468 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:18,510 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 27 states and 36 transitions. Complement of second has 8 states. [2022-07-22 01:31:18,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-22 01:31:18,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:18,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2022-07-22 01:31:18,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 2 letters. Loop has 3 letters. [2022-07-22 01:31:18,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:31:18,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 5 letters. Loop has 3 letters. [2022-07-22 01:31:18,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:31:18,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 2 letters. Loop has 6 letters. [2022-07-22 01:31:18,520 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:31:18,520 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 36 transitions. [2022-07-22 01:31:18,524 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-22 01:31:18,527 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 10 states and 15 transitions. [2022-07-22 01:31:18,531 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2022-07-22 01:31:18,531 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2022-07-22 01:31:18,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2022-07-22 01:31:18,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:31:18,532 INFO L369 hiAutomatonCegarLoop]: Abstraction has 10 states and 15 transitions. [2022-07-22 01:31:18,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2022-07-22 01:31:18,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-22 01:31:18,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:18,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2022-07-22 01:31:18,559 INFO L392 hiAutomatonCegarLoop]: Abstraction has 10 states and 15 transitions. [2022-07-22 01:31:18,559 INFO L374 stractBuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2022-07-22 01:31:18,559 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-22 01:31:18,559 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 15 transitions. [2022-07-22 01:31:18,561 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-22 01:31:18,561 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:31:18,561 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:31:18,561 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-22 01:31:18,561 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-22 01:31:18,561 INFO L752 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 87#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 83#L13-1 assume !!(main_~i~0#1 > 10); 85#L10 assume 25 == main_~i~0#1;main_~i~0#1 := 30; 79#L10-2 [2022-07-22 01:31:18,562 INFO L754 eck$LassoCheckResult]: Loop: 79#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 80#L13-1 assume !!(main_~i~0#1 > 10); 88#L10 assume !(25 == main_~i~0#1); 79#L10-2 [2022-07-22 01:31:18,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:18,562 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-07-22 01:31:18,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:31:18,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872651117] [2022-07-22 01:31:18,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:31:18,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:31:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:18,568 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:31:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:18,572 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:31:18,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:18,573 INFO L85 PathProgramCache]: Analyzing trace with hash 49368, now seen corresponding path program 2 times [2022-07-22 01:31:18,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:31:18,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666649936] [2022-07-22 01:31:18,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:31:18,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:31:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:18,583 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:31:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:18,586 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:31:18,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:18,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1810664019, now seen corresponding path program 1 times [2022-07-22 01:31:18,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:31:18,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210681733] [2022-07-22 01:31:18,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:31:18,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:31:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:18,593 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:31:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:18,596 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:31:18,615 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:31:18,615 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:31:18,615 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:31:18,615 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:31:18,615 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 01:31:18,616 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:18,616 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:31:18,616 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:31:18,616 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration2_Loop [2022-07-22 01:31:18,616 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:31:18,616 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:31:18,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:18,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:18,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:18,687 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:31:18,687 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 01:31:18,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:18,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:18,689 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:18,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-07-22 01:31:18,729 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:31:18,729 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:31:18,750 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:31:18,750 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:31:18,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:18,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:18,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:18,780 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:18,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-07-22 01:31:18,784 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:31:18,784 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:31:18,796 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:31:18,796 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:31:18,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:18,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:18,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:18,846 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:18,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-07-22 01:31:18,848 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:31:18,848 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:31:18,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:18,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:18,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:18,892 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:18,896 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:31:18,896 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:31:18,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-07-22 01:31:19,067 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 01:31:19,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:19,072 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:31:19,072 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:31:19,072 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:31:19,072 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:31:19,072 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 01:31:19,072 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:19,072 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:31:19,072 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:31:19,072 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration2_Loop [2022-07-22 01:31:19,072 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:31:19,072 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:31:19,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:19,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:19,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:19,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:19,176 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:31:19,176 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 01:31:19,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:19,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:19,180 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:19,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-07-22 01:31:19,182 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:31:19,190 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:31:19,190 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:31:19,190 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:31:19,190 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:31:19,192 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-22 01:31:19,192 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-22 01:31:19,207 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:31:19,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:19,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:19,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:19,230 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:19,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-07-22 01:31:19,232 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:31:19,238 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:31:19,238 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:31:19,238 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:31:19,238 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-07-22 01:31:19,238 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:31:19,240 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-07-22 01:31:19,240 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:31:19,250 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 01:31:19,253 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-22 01:31:19,253 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-22 01:31:19,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:19,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:19,254 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:19,262 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 01:31:19,262 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 01:31:19,262 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 01:31:19,262 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-07-22 01:31:19,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-07-22 01:31:19,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:19,283 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 01:31:19,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:31:19,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:31:19,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:31:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:31:19,306 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:31:19,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:31:19,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:31:19,350 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-22 01:31:19,350 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:19,373 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 22 states and 33 transitions. Complement of second has 7 states. [2022-07-22 01:31:19,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-22 01:31:19,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:19,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2022-07-22 01:31:19,375 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 3 letters. [2022-07-22 01:31:19,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:31:19,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-22 01:31:19,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:31:19,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 6 letters. [2022-07-22 01:31:19,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:31:19,377 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 33 transitions. [2022-07-22 01:31:19,378 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-22 01:31:19,379 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 18 states and 28 transitions. [2022-07-22 01:31:19,379 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-07-22 01:31:19,379 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-07-22 01:31:19,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 28 transitions. [2022-07-22 01:31:19,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:31:19,380 INFO L369 hiAutomatonCegarLoop]: Abstraction has 18 states and 28 transitions. [2022-07-22 01:31:19,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 28 transitions. [2022-07-22 01:31:19,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-07-22 01:31:19,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:19,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 26 transitions. [2022-07-22 01:31:19,382 INFO L392 hiAutomatonCegarLoop]: Abstraction has 17 states and 26 transitions. [2022-07-22 01:31:19,383 INFO L374 stractBuchiCegarLoop]: Abstraction has 17 states and 26 transitions. [2022-07-22 01:31:19,383 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-22 01:31:19,383 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 26 transitions. [2022-07-22 01:31:19,383 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-22 01:31:19,383 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:31:19,384 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:31:19,384 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2022-07-22 01:31:19,384 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-22 01:31:19,384 INFO L752 eck$LassoCheckResult]: Stem: 164#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 165#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 169#L13-1 assume !!(main_~i~0#1 > 10); 170#L10 assume 25 == main_~i~0#1;main_~i~0#1 := 30; 157#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 158#L13-1 assume !!(main_~i~0#1 > 10); 163#L10 assume 25 == main_~i~0#1;main_~i~0#1 := 30; 167#L10-2 [2022-07-22 01:31:19,384 INFO L754 eck$LassoCheckResult]: Loop: 167#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 161#L13-1 assume !!(main_~i~0#1 > 10); 162#L10 assume !(25 == main_~i~0#1); 167#L10-2 [2022-07-22 01:31:19,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:19,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1810664017, now seen corresponding path program 1 times [2022-07-22 01:31:19,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:31:19,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407917466] [2022-07-22 01:31:19,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:31:19,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:31:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:31:19,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:31:19,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 01:31:19,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407917466] [2022-07-22 01:31:19,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407917466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 01:31:19,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 01:31:19,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 01:31:19,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465948923] [2022-07-22 01:31:19,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 01:31:19,421 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-22 01:31:19,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:19,422 INFO L85 PathProgramCache]: Analyzing trace with hash 49368, now seen corresponding path program 3 times [2022-07-22 01:31:19,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:31:19,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086602080] [2022-07-22 01:31:19,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:31:19,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:31:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:19,426 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:31:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:19,428 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:31:19,446 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:31:19,446 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:31:19,446 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:31:19,446 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:31:19,447 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 01:31:19,447 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:19,447 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:31:19,447 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:31:19,447 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration3_Loop [2022-07-22 01:31:19,447 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:31:19,447 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:31:19,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:19,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:19,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:19,528 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:31:19,529 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 01:31:19,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:19,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:19,532 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:19,540 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:31:19,540 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:31:19,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-07-22 01:31:19,559 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:31:19,559 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:31:19,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2022-07-22 01:31:19,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:19,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:19,581 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:19,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-07-22 01:31:19,583 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:31:19,583 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:31:19,593 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:31:19,593 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:31:19,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:19,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:19,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:19,613 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:19,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-07-22 01:31:19,614 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:31:19,614 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:31:19,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:19,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:19,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:19,637 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:19,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-07-22 01:31:19,642 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:31:19,642 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:31:19,795 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 01:31:19,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:19,799 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:31:19,799 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:31:19,799 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:31:19,799 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:31:19,799 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 01:31:19,799 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:19,799 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:31:19,799 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:31:19,799 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration3_Loop [2022-07-22 01:31:19,799 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:31:19,799 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:31:19,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:19,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:19,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:19,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:19,885 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:31:19,885 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 01:31:19,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:19,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:19,888 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:19,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-07-22 01:31:19,894 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:31:19,899 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:31:19,899 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:31:19,899 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:31:19,899 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:31:19,901 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-22 01:31:19,901 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-22 01:31:19,911 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:31:19,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:19,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:19,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:19,936 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:19,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-07-22 01:31:19,938 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:31:19,943 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:31:19,943 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:31:19,943 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:31:19,943 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:31:19,945 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-22 01:31:19,945 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-22 01:31:19,961 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:31:19,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2022-07-22 01:31:19,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:19,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:19,982 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:19,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-07-22 01:31:19,984 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:31:19,990 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:31:19,990 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:31:19,990 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:31:19,990 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-07-22 01:31:19,991 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:31:19,995 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-07-22 01:31:19,995 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:31:20,017 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 01:31:20,020 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-22 01:31:20,020 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-22 01:31:20,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:20,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:20,052 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:20,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-07-22 01:31:20,055 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 01:31:20,055 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 01:31:20,055 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 01:31:20,055 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-07-22 01:31:20,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:20,078 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 01:31:20,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:31:20,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:31:20,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:31:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:31:20,108 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:31:20,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:31:20,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:31:20,141 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-22 01:31:20,141 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:20,170 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 35 transitions. Complement of second has 7 states. [2022-07-22 01:31:20,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-22 01:31:20,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:20,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2022-07-22 01:31:20,172 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-22 01:31:20,173 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:31:20,173 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-22 01:31:20,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:31:20,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:31:20,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:31:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:31:20,202 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:31:20,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:31:20,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:31:20,222 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-22 01:31:20,222 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:20,247 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 22 states and 33 transitions. Complement of second has 7 states. [2022-07-22 01:31:20,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-22 01:31:20,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:20,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2022-07-22 01:31:20,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-22 01:31:20,249 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:31:20,249 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-22 01:31:20,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:31:20,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:31:20,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:31:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:31:20,280 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:31:20,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:31:20,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:31:20,304 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-22 01:31:20,305 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:20,329 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 34 states and 50 transitions. Complement of second has 7 states. [2022-07-22 01:31:20,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-22 01:31:20,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:20,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-07-22 01:31:20,330 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-22 01:31:20,331 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:31:20,331 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 10 letters. Loop has 3 letters. [2022-07-22 01:31:20,331 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:31:20,331 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 7 letters. Loop has 6 letters. [2022-07-22 01:31:20,332 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:31:20,332 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 50 transitions. [2022-07-22 01:31:20,333 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-07-22 01:31:20,334 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 24 states and 37 transitions. [2022-07-22 01:31:20,334 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-07-22 01:31:20,334 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2022-07-22 01:31:20,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 37 transitions. [2022-07-22 01:31:20,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:31:20,334 INFO L369 hiAutomatonCegarLoop]: Abstraction has 24 states and 37 transitions. [2022-07-22 01:31:20,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 37 transitions. [2022-07-22 01:31:20,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 16. [2022-07-22 01:31:20,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.5625) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:20,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 25 transitions. [2022-07-22 01:31:20,337 INFO L392 hiAutomatonCegarLoop]: Abstraction has 16 states and 25 transitions. [2022-07-22 01:31:20,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 01:31:20,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 01:31:20,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 01:31:20,340 INFO L87 Difference]: Start difference. First operand 16 states and 25 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:20,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 01:31:20,384 INFO L93 Difference]: Finished difference Result 19 states and 29 transitions. [2022-07-22 01:31:20,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 01:31:20,385 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 29 transitions. [2022-07-22 01:31:20,385 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-07-22 01:31:20,386 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 19 states and 29 transitions. [2022-07-22 01:31:20,386 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-07-22 01:31:20,386 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-22 01:31:20,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 29 transitions. [2022-07-22 01:31:20,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:31:20,386 INFO L369 hiAutomatonCegarLoop]: Abstraction has 19 states and 29 transitions. [2022-07-22 01:31:20,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 29 transitions. [2022-07-22 01:31:20,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2022-07-22 01:31:20,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:20,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 26 transitions. [2022-07-22 01:31:20,388 INFO L392 hiAutomatonCegarLoop]: Abstraction has 17 states and 26 transitions. [2022-07-22 01:31:20,388 INFO L374 stractBuchiCegarLoop]: Abstraction has 17 states and 26 transitions. [2022-07-22 01:31:20,388 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-22 01:31:20,388 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 26 transitions. [2022-07-22 01:31:20,389 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2022-07-22 01:31:20,389 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:31:20,389 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:31:20,389 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-22 01:31:20,389 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-22 01:31:20,389 INFO L752 eck$LassoCheckResult]: Stem: 431#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 432#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 435#L13-1 assume !!(main_~i~0#1 > 10); 433#L10 [2022-07-22 01:31:20,390 INFO L754 eck$LassoCheckResult]: Loop: 433#L10 assume 25 == main_~i~0#1;main_~i~0#1 := 30; 424#L10-2 assume !(main_~i~0#1 <= 30);main_~i~0#1 := 20; 426#L13-1 assume !!(main_~i~0#1 > 10); 433#L10 [2022-07-22 01:31:20,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:20,390 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-07-22 01:31:20,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:31:20,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914156612] [2022-07-22 01:31:20,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:31:20,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:31:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:20,393 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:31:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:20,395 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:31:20,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:20,395 INFO L85 PathProgramCache]: Analyzing trace with hash 43938, now seen corresponding path program 1 times [2022-07-22 01:31:20,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:31:20,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181074002] [2022-07-22 01:31:20,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:31:20,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:31:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:31:20,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:31:20,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 01:31:20,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181074002] [2022-07-22 01:31:20,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181074002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 01:31:20,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 01:31:20,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 01:31:20,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930501832] [2022-07-22 01:31:20,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 01:31:20,405 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-22 01:31:20,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 01:31:20,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 01:31:20,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 01:31:20,406 INFO L87 Difference]: Start difference. First operand 17 states and 26 transitions. cyclomatic complexity: 11 Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:20,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:20,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 01:31:20,415 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2022-07-22 01:31:20,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 01:31:20,415 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 22 transitions. [2022-07-22 01:31:20,416 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-07-22 01:31:20,416 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 22 transitions. [2022-07-22 01:31:20,417 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-07-22 01:31:20,417 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-22 01:31:20,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 22 transitions. [2022-07-22 01:31:20,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:31:20,417 INFO L369 hiAutomatonCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-07-22 01:31:20,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 22 transitions. [2022-07-22 01:31:20,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-07-22 01:31:20,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:20,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-07-22 01:31:20,419 INFO L392 hiAutomatonCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-07-22 01:31:20,419 INFO L374 stractBuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-07-22 01:31:20,419 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-22 01:31:20,419 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2022-07-22 01:31:20,419 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-07-22 01:31:20,419 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:31:20,419 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:31:20,420 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1] [2022-07-22 01:31:20,420 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2022-07-22 01:31:20,420 INFO L752 eck$LassoCheckResult]: Stem: 471#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 472#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 474#L13-1 assume !!(main_~i~0#1 > 10); 473#L10 assume 25 == main_~i~0#1;main_~i~0#1 := 30; 468#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 467#L13-1 assume !!(main_~i~0#1 > 10); 466#L10 assume !(25 == main_~i~0#1); 469#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 470#L13-1 assume !!(main_~i~0#1 > 10); 479#L10 assume 25 == main_~i~0#1;main_~i~0#1 := 30; 475#L10-2 [2022-07-22 01:31:20,420 INFO L754 eck$LassoCheckResult]: Loop: 475#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 465#L13-1 assume !!(main_~i~0#1 > 10); 466#L10 assume !(25 == main_~i~0#1); 469#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 470#L13-1 assume !!(main_~i~0#1 > 10); 479#L10 assume 25 == main_~i~0#1;main_~i~0#1 := 30; 475#L10-2 [2022-07-22 01:31:20,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:20,420 INFO L85 PathProgramCache]: Analyzing trace with hash 997539140, now seen corresponding path program 2 times [2022-07-22 01:31:20,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:31:20,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699312262] [2022-07-22 01:31:20,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:31:20,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:31:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:31:20,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:31:20,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 01:31:20,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699312262] [2022-07-22 01:31:20,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699312262] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 01:31:20,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306539517] [2022-07-22 01:31:20,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 01:31:20,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 01:31:20,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:20,446 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 01:31:20,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-22 01:31:20,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 01:31:20,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 01:31:20,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:31:20,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:31:20,486 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:31:20,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 01:31:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:31:20,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306539517] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 01:31:20,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 01:31:20,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-07-22 01:31:20,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976455128] [2022-07-22 01:31:20,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 01:31:20,523 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-22 01:31:20,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:20,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1470741663, now seen corresponding path program 1 times [2022-07-22 01:31:20,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:31:20,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582874556] [2022-07-22 01:31:20,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:31:20,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:31:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:20,533 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:31:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:20,537 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:31:20,560 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:31:20,560 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:31:20,560 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:31:20,560 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:31:20,560 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 01:31:20,560 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:20,560 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:31:20,560 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:31:20,560 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration5_Loop [2022-07-22 01:31:20,560 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:31:20,560 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:31:20,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:20,563 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:20,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:20,593 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:31:20,593 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 01:31:20,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:20,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:20,596 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:20,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-07-22 01:31:20,598 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:31:20,598 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:31:20,619 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:31:20,619 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:31:20,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-07-22 01:31:20,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:20,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:20,638 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:20,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-07-22 01:31:20,641 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:31:20,641 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:31:20,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2022-07-22 01:31:20,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:20,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:20,668 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:20,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-07-22 01:31:20,711 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:31:20,711 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:31:20,719 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 01:31:20,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:20,734 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:31:20,735 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:31:20,735 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:31:20,735 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:31:20,735 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 01:31:20,735 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:20,735 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:31:20,735 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:31:20,735 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration5_Loop [2022-07-22 01:31:20,735 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:31:20,735 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:31:20,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:20,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:20,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:20,785 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:31:20,785 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 01:31:20,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:20,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:20,812 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:20,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-07-22 01:31:20,817 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:31:20,825 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:31:20,825 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:31:20,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:31:20,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:31:20,826 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:31:20,829 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:31:20,829 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:31:20,843 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 01:31:20,856 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-22 01:31:20,856 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-22 01:31:20,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:20,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:20,858 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:31:20,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-07-22 01:31:20,861 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 01:31:20,861 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 01:31:20,861 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 01:31:20,861 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 57 Supporting invariants [] [2022-07-22 01:31:20,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2022-07-22 01:31:20,877 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 01:31:20,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:31:20,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:31:20,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:31:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:31:20,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 01:31:20,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:31:20,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:31:20,963 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-22 01:31:20,963 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:20,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:20,986 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 31 states and 37 transitions. Complement of second has 7 states. [2022-07-22 01:31:20,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-22 01:31:20,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:20,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2022-07-22 01:31:20,995 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2022-07-22 01:31:20,995 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:31:20,995 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 16 letters. Loop has 6 letters. [2022-07-22 01:31:20,995 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:31:20,996 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 12 letters. [2022-07-22 01:31:20,996 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:31:20,996 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 37 transitions. [2022-07-22 01:31:20,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-07-22 01:31:21,000 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 30 states and 36 transitions. [2022-07-22 01:31:21,000 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-07-22 01:31:21,000 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2022-07-22 01:31:21,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 36 transitions. [2022-07-22 01:31:21,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:31:21,000 INFO L369 hiAutomatonCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-07-22 01:31:21,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 36 transitions. [2022-07-22 01:31:21,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2022-07-22 01:31:21,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:21,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-07-22 01:31:21,005 INFO L392 hiAutomatonCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-07-22 01:31:21,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 01:31:21,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 01:31:21,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-22 01:31:21,006 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:21,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 01:31:21,034 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2022-07-22 01:31:21,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 01:31:21,035 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 40 transitions. [2022-07-22 01:31:21,037 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2022-07-22 01:31:21,038 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 31 states and 35 transitions. [2022-07-22 01:31:21,038 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-07-22 01:31:21,038 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2022-07-22 01:31:21,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 35 transitions. [2022-07-22 01:31:21,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:31:21,038 INFO L369 hiAutomatonCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-07-22 01:31:21,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 35 transitions. [2022-07-22 01:31:21,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2022-07-22 01:31:21,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:31:21,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-07-22 01:31:21,040 INFO L392 hiAutomatonCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-07-22 01:31:21,040 INFO L374 stractBuchiCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-07-22 01:31:21,040 INFO L287 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-07-22 01:31:21,040 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 30 transitions. [2022-07-22 01:31:21,040 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2022-07-22 01:31:21,040 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:31:21,041 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:31:21,041 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 2, 1, 1] [2022-07-22 01:31:21,041 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [5, 5, 4, 1] [2022-07-22 01:31:21,041 INFO L752 eck$LassoCheckResult]: Stem: 711#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 712#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 714#L13-1 assume !!(main_~i~0#1 > 10); 713#L10 assume 25 == main_~i~0#1;main_~i~0#1 := 30; 708#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 707#L13-1 assume !!(main_~i~0#1 > 10); 706#L10 assume !(25 == main_~i~0#1); 709#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 710#L13-1 assume !!(main_~i~0#1 > 10); 730#L10 assume !(25 == main_~i~0#1); 729#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 728#L13-1 assume !!(main_~i~0#1 > 10); 727#L10 assume !(25 == main_~i~0#1); 726#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 725#L13-1 assume !!(main_~i~0#1 > 10); 724#L10 assume !(25 == main_~i~0#1); 720#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 721#L13-1 assume !!(main_~i~0#1 > 10); 719#L10 assume 25 == main_~i~0#1;main_~i~0#1 := 30; 718#L10-2 [2022-07-22 01:31:21,041 INFO L754 eck$LassoCheckResult]: Loop: 718#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 705#L13-1 assume !!(main_~i~0#1 > 10); 706#L10 assume !(25 == main_~i~0#1); 709#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 710#L13-1 assume !!(main_~i~0#1 > 10); 730#L10 assume !(25 == main_~i~0#1); 729#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 728#L13-1 assume !!(main_~i~0#1 > 10); 727#L10 assume !(25 == main_~i~0#1); 726#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 725#L13-1 assume !!(main_~i~0#1 > 10); 724#L10 assume !(25 == main_~i~0#1); 720#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 721#L13-1 assume !!(main_~i~0#1 > 10); 719#L10 assume 25 == main_~i~0#1;main_~i~0#1 := 30; 718#L10-2 [2022-07-22 01:31:21,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:21,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1587470191, now seen corresponding path program 3 times [2022-07-22 01:31:21,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:31:21,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844637649] [2022-07-22 01:31:21,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:31:21,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:31:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:21,050 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:31:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:21,056 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:31:21,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:21,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1155970966, now seen corresponding path program 2 times [2022-07-22 01:31:21,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:31:21,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693369038] [2022-07-22 01:31:21,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:31:21,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:31:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:21,062 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:31:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:21,067 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:31:21,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:21,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1288805114, now seen corresponding path program 4 times [2022-07-22 01:31:21,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:31:21,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231149616] [2022-07-22 01:31:21,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:31:21,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:31:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:21,079 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:31:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:21,089 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:31:21,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.07 01:31:21 BoogieIcfgContainer [2022-07-22 01:31:21,234 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-22 01:31:21,235 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 01:31:21,235 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 01:31:21,235 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 01:31:21,235 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:31:17" (3/4) ... [2022-07-22 01:31:21,237 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-07-22 01:31:21,268 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 01:31:21,268 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 01:31:21,268 INFO L158 Benchmark]: Toolchain (without parser) took 4479.38ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 34.0MB in the beginning and 24.4MB in the end (delta: 9.6MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. [2022-07-22 01:31:21,269 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory was 36.6MB in the beginning and 36.5MB in the end (delta: 43.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 01:31:21,269 INFO L158 Benchmark]: CACSL2BoogieTranslator took 136.11ms. Allocated memory is still 54.5MB. Free memory was 33.8MB in the beginning and 25.3MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 01:31:21,269 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.61ms. Allocated memory is still 54.5MB. Free memory was 25.2MB in the beginning and 39.6MB in the end (delta: -14.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-22 01:31:21,270 INFO L158 Benchmark]: Boogie Preprocessor took 15.23ms. Allocated memory is still 54.5MB. Free memory was 39.6MB in the beginning and 38.6MB in the end (delta: 938.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 01:31:21,270 INFO L158 Benchmark]: RCFGBuilder took 217.71ms. Allocated memory is still 54.5MB. Free memory was 38.6MB in the beginning and 30.8MB in the end (delta: 7.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-22 01:31:21,270 INFO L158 Benchmark]: BuchiAutomizer took 4019.42ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 30.6MB in the beginning and 26.9MB in the end (delta: 3.7MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2022-07-22 01:31:21,271 INFO L158 Benchmark]: Witness Printer took 33.20ms. Allocated memory is still 67.1MB. Free memory was 26.9MB in the beginning and 24.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 01:31:21,272 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory was 36.6MB in the beginning and 36.5MB in the end (delta: 43.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 136.11ms. Allocated memory is still 54.5MB. Free memory was 33.8MB in the beginning and 25.3MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.61ms. Allocated memory is still 54.5MB. Free memory was 25.2MB in the beginning and 39.6MB in the end (delta: -14.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.23ms. Allocated memory is still 54.5MB. Free memory was 39.6MB in the beginning and 38.6MB in the end (delta: 938.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 217.71ms. Allocated memory is still 54.5MB. Free memory was 38.6MB in the beginning and 30.8MB in the end (delta: 7.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 4019.42ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 30.6MB in the beginning and 26.9MB in the end (delta: 3.7MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. * Witness Printer took 33.20ms. Allocated memory is still 67.1MB. Free memory was 26.9MB in the beginning and 24.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (3 trivial, 3 deterministic, 1 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 5 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 57 and consists of 4 locations. One nondeterministic module has affine ranking function i and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 7 locations. The remainder module has 26 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.9s and 6 iterations. TraceHistogramMax:6. Analysis of lassos took 3.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 21 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/3 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 62 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56 mSDsluCounter, 71 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 134 IncrementalHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 58 mSDtfsCounter, 134 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax190 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq169 hnf94 smp100 dnf151 smp89 tf107 neg96 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 36ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {i=30, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5a1a21db=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i > 10 [L10] COND TRUE i == 25 [L11] i = 30 [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND TRUE i == 25 [L11] i = 30 Loop: [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND TRUE i == 25 [L11] i = 30 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-07-22 01:31:21,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-07-22 01:31:21,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)