./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b5317dae 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-crafted/NestedRecursion_2b.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 422ea435de955cc6e58e578076c5ef733a2456157ad413df035d109cb231427a --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 04:30:00,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 04:30:00,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 04:30:00,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 04:30:00,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 04:30:00,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 04:30:00,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 04:30:00,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 04:30:00,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 04:30:00,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 04:30:00,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 04:30:00,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 04:30:00,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 04:30:00,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 04:30:00,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 04:30:00,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 04:30:00,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 04:30:00,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 04:30:00,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 04:30:00,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 04:30:00,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 04:30:00,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 04:30:00,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 04:30:00,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 04:30:00,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 04:30:00,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 04:30:00,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 04:30:00,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 04:30:00,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 04:30:00,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 04:30:00,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 04:30:00,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 04:30:00,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 04:30:00,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 04:30:00,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 04:30:00,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 04:30:00,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 04:30:00,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 04:30:00,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 04:30:00,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 04:30:00,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 04:30:00,934 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-16 04:30:00,960 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 04:30:00,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 04:30:00,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 04:30:00,961 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 04:30:00,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 04:30:00,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 04:30:00,962 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 04:30:00,962 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-16 04:30:00,962 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-16 04:30:00,963 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-16 04:30:00,963 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-16 04:30:00,963 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-16 04:30:00,963 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-16 04:30:00,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 04:30:00,964 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-16 04:30:00,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 04:30:00,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 04:30:00,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-16 04:30:00,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-16 04:30:00,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-16 04:30:00,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 04:30:00,965 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-16 04:30:00,965 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 04:30:00,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-16 04:30:00,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 04:30:00,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 04:30:00,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 04:30:00,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 04:30:00,967 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-16 04:30:00,967 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 422ea435de955cc6e58e578076c5ef733a2456157ad413df035d109cb231427a [2023-02-16 04:30:01,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 04:30:01,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 04:30:01,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 04:30:01,198 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 04:30:01,199 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 04:30:01,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c [2023-02-16 04:30:02,157 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 04:30:02,316 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 04:30:02,317 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c [2023-02-16 04:30:02,320 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/388172b84/ded97ea331004159879600cb1bd40e03/FLAG2c8862a28 [2023-02-16 04:30:02,330 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/388172b84/ded97ea331004159879600cb1bd40e03 [2023-02-16 04:30:02,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 04:30:02,335 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 04:30:02,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 04:30:02,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 04:30:02,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 04:30:02,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 04:30:02" (1/1) ... [2023-02-16 04:30:02,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6624134c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:30:02, skipping insertion in model container [2023-02-16 04:30:02,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 04:30:02" (1/1) ... [2023-02-16 04:30:02,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 04:30:02,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 04:30:02,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 04:30:02,449 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 04:30:02,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 04:30:02,466 INFO L208 MainTranslator]: Completed translation [2023-02-16 04:30:02,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:30:02 WrapperNode [2023-02-16 04:30:02,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 04:30:02,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 04:30:02,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 04:30:02,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 04:30:02,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:30:02" (1/1) ... [2023-02-16 04:30:02,477 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:30:02" (1/1) ... [2023-02-16 04:30:02,487 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 9 [2023-02-16 04:30:02,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 04:30:02,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 04:30:02,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 04:30:02,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 04:30:02,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:30:02" (1/1) ... [2023-02-16 04:30:02,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:30:02" (1/1) ... [2023-02-16 04:30:02,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:30:02" (1/1) ... [2023-02-16 04:30:02,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:30:02" (1/1) ... [2023-02-16 04:30:02,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:30:02" (1/1) ... [2023-02-16 04:30:02,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:30:02" (1/1) ... [2023-02-16 04:30:02,498 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:30:02" (1/1) ... [2023-02-16 04:30:02,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:30:02" (1/1) ... [2023-02-16 04:30:02,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 04:30:02,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 04:30:02,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 04:30:02,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 04:30:02,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:30:02" (1/1) ... [2023-02-16 04:30:02,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:02,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:02,521 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) [2023-02-16 04:30:02,525 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 [2023-02-16 04:30:02,547 INFO L130 BoogieDeclarations]: Found specification of procedure g [2023-02-16 04:30:02,548 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2023-02-16 04:30:02,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 04:30:02,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 04:30:02,584 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 04:30:02,585 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 04:30:02,676 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 04:30:02,681 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 04:30:02,681 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-16 04:30:02,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 04:30:02 BoogieIcfgContainer [2023-02-16 04:30:02,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 04:30:02,686 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-16 04:30:02,686 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-16 04:30:02,689 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-16 04:30:02,689 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-16 04:30:02,690 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.02 04:30:02" (1/3) ... [2023-02-16 04:30:02,691 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@54d807ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.02 04:30:02, skipping insertion in model container [2023-02-16 04:30:02,691 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-16 04:30:02,691 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:30:02" (2/3) ... [2023-02-16 04:30:02,691 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@54d807ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.02 04:30:02, skipping insertion in model container [2023-02-16 04:30:02,691 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-16 04:30:02,691 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 04:30:02" (3/3) ... [2023-02-16 04:30:02,692 INFO L332 chiAutomizerObserver]: Analyzing ICFG NestedRecursion_2b.c [2023-02-16 04:30:02,772 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-16 04:30:02,772 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-16 04:30:02,772 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-16 04:30:02,772 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-16 04:30:02,772 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-16 04:30:02,773 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-16 04:30:02,773 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-16 04:30:02,773 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-16 04:30:02,776 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 04:30:02,791 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-16 04:30:02,792 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-16 04:30:02,792 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-16 04:30:02,796 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-02-16 04:30:02,796 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-16 04:30:02,796 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-16 04:30:02,797 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 04:30:02,800 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-16 04:30:02,800 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-16 04:30:02,800 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-16 04:30:02,800 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-02-16 04:30:02,801 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-16 04:30:02,808 INFO L748 eck$LassoCheckResult]: Stem: 10#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 11#L20true assume !(main_~x~0#1 < 0); 9#L21true call main_#t~ret3#1 := g(main_~x~0#1);< 12#$Ultimate##0true [2023-02-16 04:30:02,808 INFO L750 eck$LassoCheckResult]: Loop: 12#$Ultimate##0true ~x := #in~x; 6#L12true assume !(0 == ~x); 4#L15true call #t~ret0 := g(~x - 1);< 12#$Ultimate##0true [2023-02-16 04:30:02,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:30:02,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1202733, now seen corresponding path program 1 times [2023-02-16 04:30:02,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:30:02,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990140477] [2023-02-16 04:30:02,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:30:02,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:30:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:30:02,882 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 04:30:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:30:02,905 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-16 04:30:02,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:30:02,908 INFO L85 PathProgramCache]: Analyzing trace with hash 29937, now seen corresponding path program 1 times [2023-02-16 04:30:02,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:30:02,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003500842] [2023-02-16 04:30:02,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:30:02,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:30:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:30:02,915 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 04:30:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:30:02,923 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-16 04:30:02,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:30:02,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1470880581, now seen corresponding path program 1 times [2023-02-16 04:30:02,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:30:02,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72785712] [2023-02-16 04:30:02,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:30:02,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:30:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:30:02,948 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 04:30:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:30:02,958 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-16 04:30:03,036 INFO L210 LassoAnalysis]: Preferences: [2023-02-16 04:30:03,053 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-16 04:30:03,053 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-16 04:30:03,053 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-16 04:30:03,054 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-16 04:30:03,054 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:03,054 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-16 04:30:03,054 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-16 04:30:03,054 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Loop [2023-02-16 04:30:03,054 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-16 04:30:03,055 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-16 04:30:03,066 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:03,076 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:03,081 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:03,087 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:03,089 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:03,151 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-16 04:30:03,152 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-16 04:30:03,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:03,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:03,156 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) [2023-02-16 04:30:03,157 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 [2023-02-16 04:30:03,158 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-16 04:30:03,159 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:30:03,176 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-16 04:30:03,176 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_~x=0} Honda state: {g_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-16 04:30:03,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-02-16 04:30:03,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:03,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:03,184 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) [2023-02-16 04:30:03,185 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 [2023-02-16 04:30:03,188 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-16 04:30:03,188 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:30:03,195 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-16 04:30:03,195 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-16 04:30:03,203 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 [2023-02-16 04:30:03,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:03,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:03,210 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) [2023-02-16 04:30:03,212 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 [2023-02-16 04:30:03,214 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-16 04:30:03,214 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:30:03,237 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-16 04:30:03,238 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-16 04:30:03,243 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 [2023-02-16 04:30:03,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:03,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:03,244 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) [2023-02-16 04:30:03,246 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 [2023-02-16 04:30:03,248 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-16 04:30:03,248 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:30:03,255 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-16 04:30:03,256 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-16 04:30:03,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-02-16 04:30:03,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:03,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:03,260 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) [2023-02-16 04:30:03,262 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 [2023-02-16 04:30:03,263 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-16 04:30:03,263 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:30:03,282 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 [2023-02-16 04:30:03,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:03,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:03,286 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) [2023-02-16 04:30:03,287 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 [2023-02-16 04:30:03,294 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-16 04:30:03,295 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:30:03,361 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-16 04:30:03,361 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=-7} Honda state: {g_#in~x=-7} Generalized eigenvectors: [{g_#in~x=0}, {g_#in~x=-1}, {g_#in~x=0}] Lambdas: [2, 1, 1] Nus: [0, 0] [2023-02-16 04:30:03,367 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 [2023-02-16 04:30:03,388 INFO L210 LassoAnalysis]: Preferences: [2023-02-16 04:30:03,389 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-16 04:30:03,389 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-16 04:30:03,389 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-16 04:30:03,389 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-16 04:30:03,390 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:03,390 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-16 04:30:03,390 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-16 04:30:03,390 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Lasso [2023-02-16 04:30:03,391 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-16 04:30:03,391 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-16 04:30:03,392 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:03,396 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:03,399 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:03,402 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:03,405 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:03,408 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:03,409 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:03,416 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:03,419 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:03,480 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-16 04:30:03,481 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-16 04:30:03,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:03,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:03,483 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) [2023-02-16 04:30:03,489 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 [2023-02-16 04:30:03,622 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-16 04:30:03,622 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:30:03,633 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-16 04:30:03,633 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-16 04:30:03,636 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 [2023-02-16 04:30:03,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:03,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:03,638 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) [2023-02-16 04:30:03,639 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 [2023-02-16 04:30:03,641 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-16 04:30:03,641 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:30:03,657 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-16 04:30:03,657 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-16 04:30:03,668 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 [2023-02-16 04:30:03,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:03,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:03,670 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) [2023-02-16 04:30:03,684 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 [2023-02-16 04:30:03,685 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-16 04:30:03,685 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:30:03,701 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-16 04:30:03,701 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-16 04:30:03,707 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 [2023-02-16 04:30:03,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:03,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:03,709 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) [2023-02-16 04:30:03,710 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 [2023-02-16 04:30:03,713 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-16 04:30:03,713 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:30:03,725 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-16 04:30:03,725 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-16 04:30:03,730 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 [2023-02-16 04:30:03,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:03,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:03,731 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) [2023-02-16 04:30:03,732 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 [2023-02-16 04:30:03,734 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-16 04:30:03,734 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:30:03,742 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-16 04:30:03,742 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_~x=0} Honda state: {g_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-16 04:30:03,747 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 [2023-02-16 04:30:03,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:03,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:03,748 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) [2023-02-16 04:30:03,749 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 [2023-02-16 04:30:03,751 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-16 04:30:03,751 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:30:03,758 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-16 04:30:03,759 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret3#1=0} Honda state: {ULTIMATE.start_main_#t~ret3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-16 04:30:03,761 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 [2023-02-16 04:30:03,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:03,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:03,763 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) [2023-02-16 04:30:03,763 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 [2023-02-16 04:30:03,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-16 04:30:03,768 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:30:03,785 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 [2023-02-16 04:30:03,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:03,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:03,786 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) [2023-02-16 04:30:03,787 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 [2023-02-16 04:30:03,789 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-16 04:30:03,789 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:30:03,870 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-16 04:30:03,873 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 [2023-02-16 04:30:03,874 INFO L210 LassoAnalysis]: Preferences: [2023-02-16 04:30:03,874 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-16 04:30:03,874 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-16 04:30:03,874 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-16 04:30:03,874 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-16 04:30:03,874 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:03,874 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-16 04:30:03,874 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-16 04:30:03,874 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Lasso [2023-02-16 04:30:03,874 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-16 04:30:03,874 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-16 04:30:03,875 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:03,878 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:03,884 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:03,891 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:03,893 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:03,895 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:03,907 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:03,909 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:03,914 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:03,965 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-16 04:30:03,968 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-16 04:30:03,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:03,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:03,971 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) [2023-02-16 04:30:03,974 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 [2023-02-16 04:30:03,975 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 [2023-02-16 04:30:03,982 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-16 04:30:03,982 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-16 04:30:03,983 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-16 04:30:03,983 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-16 04:30:03,983 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-16 04:30:03,984 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-16 04:30:03,984 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-16 04:30:04,000 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-16 04:30:04,005 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 [2023-02-16 04:30:04,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:04,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:04,006 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) [2023-02-16 04:30:04,007 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 [2023-02-16 04:30:04,010 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 [2023-02-16 04:30:04,016 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-16 04:30:04,016 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-16 04:30:04,016 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-16 04:30:04,016 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-16 04:30:04,016 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-16 04:30:04,016 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-16 04:30:04,016 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-16 04:30:04,018 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-16 04:30:04,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-02-16 04:30:04,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:04,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:04,022 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) [2023-02-16 04:30:04,024 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 [2023-02-16 04:30:04,029 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 [2023-02-16 04:30:04,035 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-16 04:30:04,035 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-16 04:30:04,035 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-16 04:30:04,035 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-16 04:30:04,035 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-16 04:30:04,036 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-16 04:30:04,036 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-16 04:30:04,050 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-16 04:30:04,061 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 [2023-02-16 04:30:04,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:04,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:04,063 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) [2023-02-16 04:30:04,077 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 [2023-02-16 04:30:04,078 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 [2023-02-16 04:30:04,084 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-16 04:30:04,084 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-16 04:30:04,084 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-16 04:30:04,084 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-16 04:30:04,084 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-16 04:30:04,085 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-16 04:30:04,085 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-16 04:30:04,089 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-16 04:30:04,092 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 [2023-02-16 04:30:04,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:04,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:04,093 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) [2023-02-16 04:30:04,095 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 [2023-02-16 04:30:04,096 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 [2023-02-16 04:30:04,102 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-16 04:30:04,102 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-16 04:30:04,103 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-16 04:30:04,103 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-16 04:30:04,103 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-16 04:30:04,103 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-16 04:30:04,103 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-16 04:30:04,104 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-16 04:30:04,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2023-02-16 04:30:04,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:04,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:04,108 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) [2023-02-16 04:30:04,112 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 [2023-02-16 04:30:04,114 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 [2023-02-16 04:30:04,118 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-16 04:30:04,118 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-16 04:30:04,118 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-16 04:30:04,118 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-16 04:30:04,118 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-16 04:30:04,119 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-16 04:30:04,119 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-16 04:30:04,120 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-16 04:30:04,125 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 [2023-02-16 04:30:04,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:04,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:04,127 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) [2023-02-16 04:30:04,127 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 [2023-02-16 04:30:04,130 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 [2023-02-16 04:30:04,135 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-16 04:30:04,135 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-16 04:30:04,136 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-16 04:30:04,136 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-16 04:30:04,136 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-16 04:30:04,136 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-16 04:30:04,136 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-16 04:30:04,137 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-16 04:30:04,139 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 [2023-02-16 04:30:04,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:04,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:04,141 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) [2023-02-16 04:30:04,141 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 [2023-02-16 04:30:04,145 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 [2023-02-16 04:30:04,151 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-16 04:30:04,151 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-16 04:30:04,151 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-02-16 04:30:04,151 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-16 04:30:04,158 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2023-02-16 04:30:04,159 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2023-02-16 04:30:04,192 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-16 04:30:04,212 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2023-02-16 04:30:04,213 INFO L444 ModelExtractionUtils]: 2 out of 11 variables were initially zero. Simplification set additionally 6 variables to zero. [2023-02-16 04:30:04,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:04,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:04,215 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) [2023-02-16 04:30:04,215 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 [2023-02-16 04:30:04,218 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-16 04:30:04,226 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2023-02-16 04:30:04,226 INFO L513 LassoAnalysis]: Proved termination. [2023-02-16 04:30:04,227 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#in~x) = 1*g_#in~x Supporting invariants [1*g_#in~x >= 0] [2023-02-16 04:30:04,235 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 [2023-02-16 04:30:04,241 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2023-02-16 04:30:04,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:30:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:30:04,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 04:30:04,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:30:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:30:04,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-16 04:30:04,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:30:04,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:30:04,362 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2023-02-16 04:30:04,364 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:30:04,457 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 36 states and 43 transitions. Complement of second has 13 states. [2023-02-16 04:30:04,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2023-02-16 04:30:04,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 04:30:04,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2023-02-16 04:30:04,467 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2023-02-16 04:30:04,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-16 04:30:04,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2023-02-16 04:30:04,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-16 04:30:04,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 6 letters. [2023-02-16 04:30:04,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-16 04:30:04,469 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 43 transitions. [2023-02-16 04:30:04,475 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-16 04:30:04,481 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 20 states and 26 transitions. [2023-02-16 04:30:04,482 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2023-02-16 04:30:04,482 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2023-02-16 04:30:04,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2023-02-16 04:30:04,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-16 04:30:04,484 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2023-02-16 04:30:04,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2023-02-16 04:30:04,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2023-02-16 04:30:04,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-16 04:30:04,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-02-16 04:30:04,504 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-02-16 04:30:04,504 INFO L428 stractBuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-02-16 04:30:04,504 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-16 04:30:04,504 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 22 transitions. [2023-02-16 04:30:04,505 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-16 04:30:04,505 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-16 04:30:04,505 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-16 04:30:04,505 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:30:04,505 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2023-02-16 04:30:04,506 INFO L748 eck$LassoCheckResult]: Stem: 127#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 128#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 129#L20 assume !(main_~x~0#1 < 0); 124#L21 call main_#t~ret3#1 := g(main_~x~0#1);< 126#$Ultimate##0 ~x := #in~x; 130#L12 assume !(0 == ~x); 119#L15 call #t~ret0 := g(~x - 1);< 125#$Ultimate##0 ~x := #in~x; 131#L12 assume 0 == ~x;#res := 1; 118#gFINAL assume true; 120#gEXIT >#23#return; 122#L15-1 [2023-02-16 04:30:04,506 INFO L750 eck$LassoCheckResult]: Loop: 122#L15-1 call #t~ret1 := g(1 + #t~ret0);< 123#$Ultimate##0 ~x := #in~x; 134#L12 assume !(0 == ~x); 121#L15 call #t~ret0 := g(~x - 1);< 123#$Ultimate##0 ~x := #in~x; 134#L12 assume 0 == ~x;#res := 1; 133#gFINAL assume true; 135#gEXIT >#23#return; 122#L15-1 [2023-02-16 04:30:04,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:30:04,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1676493545, now seen corresponding path program 1 times [2023-02-16 04:30:04,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:30:04,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483110734] [2023-02-16 04:30:04,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:30:04,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:30:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:30:04,512 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 04:30:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:30:04,517 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-16 04:30:04,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:30:04,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1500125133, now seen corresponding path program 1 times [2023-02-16 04:30:04,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:30:04,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189692499] [2023-02-16 04:30:04,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:30:04,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:30:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:30:04,523 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 04:30:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:30:04,527 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-16 04:30:04,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:30:04,527 INFO L85 PathProgramCache]: Analyzing trace with hash 122773219, now seen corresponding path program 1 times [2023-02-16 04:30:04,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:30:04,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463938324] [2023-02-16 04:30:04,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:30:04,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:30:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:30:04,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-02-16 04:30:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:30:04,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-16 04:30:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:30:04,669 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 04:30:04,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:30:04,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463938324] [2023-02-16 04:30:04,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463938324] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:30:04,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082872867] [2023-02-16 04:30:04,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:30:04,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:30:04,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:04,673 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) [2023-02-16 04:30:04,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-02-16 04:30:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:30:04,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-16 04:30:04,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:30:04,747 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 04:30:04,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:30:04,855 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 04:30:04,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082872867] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:30:04,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:30:04,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2023-02-16 04:30:04,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352089437] [2023-02-16 04:30:04,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:30:04,943 INFO L210 LassoAnalysis]: Preferences: [2023-02-16 04:30:04,943 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-16 04:30:04,943 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-16 04:30:04,943 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-16 04:30:04,944 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-16 04:30:04,944 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:04,944 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-16 04:30:04,944 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-16 04:30:04,944 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration2_Loop [2023-02-16 04:30:04,944 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-16 04:30:04,944 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-16 04:30:04,945 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:04,946 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:04,952 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:04,984 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-16 04:30:04,984 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-16 04:30:04,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:04,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:04,987 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) [2023-02-16 04:30:04,989 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 [2023-02-16 04:30:04,990 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-16 04:30:04,990 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:30:05,000 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-16 04:30:05,001 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-16 04:30:05,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-02-16 04:30:05,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:05,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:05,007 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) [2023-02-16 04:30:05,007 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 [2023-02-16 04:30:05,010 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-16 04:30:05,010 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:30:05,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-02-16 04:30:05,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:05,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:05,037 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) [2023-02-16 04:30:05,040 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 [2023-02-16 04:30:05,042 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-16 04:30:05,042 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:30:05,773 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-16 04:30:05,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2023-02-16 04:30:05,777 INFO L210 LassoAnalysis]: Preferences: [2023-02-16 04:30:05,778 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-16 04:30:05,778 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-16 04:30:05,778 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-16 04:30:05,778 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-16 04:30:05,778 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:05,778 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-16 04:30:05,778 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-16 04:30:05,778 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration2_Loop [2023-02-16 04:30:05,778 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-16 04:30:05,778 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-16 04:30:05,779 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:05,781 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:05,783 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:05,820 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-16 04:30:05,820 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-16 04:30:05,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:05,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:05,837 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) [2023-02-16 04:30:05,848 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 [2023-02-16 04:30:05,850 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 [2023-02-16 04:30:05,856 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-16 04:30:05,856 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-16 04:30:05,856 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-16 04:30:05,856 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-16 04:30:05,856 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-16 04:30:05,857 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-16 04:30:05,857 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-16 04:30:05,869 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-16 04:30:05,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-02-16 04:30:05,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:05,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:05,876 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) [2023-02-16 04:30:05,878 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 [2023-02-16 04:30:05,880 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 [2023-02-16 04:30:05,886 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-16 04:30:05,886 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-16 04:30:05,886 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-16 04:30:05,886 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-16 04:30:05,886 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-16 04:30:05,888 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-16 04:30:05,888 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-16 04:30:05,917 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-16 04:30:05,920 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 [2023-02-16 04:30:05,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:05,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:05,921 INFO L229 MonitoredProcess]: Starting monitored process 31 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) [2023-02-16 04:30:05,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-02-16 04:30:05,925 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 [2023-02-16 04:30:05,931 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-16 04:30:05,931 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-16 04:30:05,931 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-16 04:30:05,931 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-16 04:30:05,931 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-16 04:30:05,933 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-16 04:30:05,933 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-16 04:30:05,948 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 [2023-02-16 04:30:05,953 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-16 04:30:05,956 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-16 04:30:05,956 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-16 04:30:05,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:05,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:05,957 INFO L229 MonitoredProcess]: Starting monitored process 32 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) [2023-02-16 04:30:05,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-02-16 04:30:05,960 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-16 04:30:05,960 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-16 04:30:05,960 INFO L513 LassoAnalysis]: Proved termination. [2023-02-16 04:30:05,961 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#t~ret0) = -2*g_#t~ret0 + 1 Supporting invariants [] [2023-02-16 04:30:05,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-02-16 04:30:05,967 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-16 04:30:05,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:30:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:30:06,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 04:30:06,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:30:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:30:06,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-16 04:30:06,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:30:06,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:30:06,142 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2023-02-16 04:30:06,142 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 6 Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 04:30:06,296 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 6. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 83 states and 121 transitions. Complement of second has 31 states. [2023-02-16 04:30:06,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2023-02-16 04:30:06,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 04:30:06,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 37 transitions. [2023-02-16 04:30:06,298 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 11 letters. Loop has 8 letters. [2023-02-16 04:30:06,298 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-16 04:30:06,298 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 19 letters. Loop has 8 letters. [2023-02-16 04:30:06,298 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-16 04:30:06,298 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 11 letters. Loop has 16 letters. [2023-02-16 04:30:06,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-16 04:30:06,299 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 83 states and 121 transitions. [2023-02-16 04:30:06,302 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2023-02-16 04:30:06,305 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 83 states to 59 states and 82 transitions. [2023-02-16 04:30:06,306 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2023-02-16 04:30:06,306 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2023-02-16 04:30:06,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 82 transitions. [2023-02-16 04:30:06,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-16 04:30:06,308 INFO L218 hiAutomatonCegarLoop]: Abstraction has 59 states and 82 transitions. [2023-02-16 04:30:06,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 82 transitions. [2023-02-16 04:30:06,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2023-02-16 04:30:06,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 33 states have internal predecessors, (36), 15 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (18), 11 states have call predecessors, (18), 13 states have call successors, (18) [2023-02-16 04:30:06,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 72 transitions. [2023-02-16 04:30:06,315 INFO L240 hiAutomatonCegarLoop]: Abstraction has 53 states and 72 transitions. [2023-02-16 04:30:06,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:30:06,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-16 04:30:06,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-02-16 04:30:06,318 INFO L87 Difference]: Start difference. First operand 53 states and 72 transitions. Second operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-16 04:30:06,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:30:06,384 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2023-02-16 04:30:06,384 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 45 transitions. [2023-02-16 04:30:06,385 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-02-16 04:30:06,386 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 31 states and 35 transitions. [2023-02-16 04:30:06,386 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2023-02-16 04:30:06,386 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2023-02-16 04:30:06,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 35 transitions. [2023-02-16 04:30:06,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-16 04:30:06,387 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31 states and 35 transitions. [2023-02-16 04:30:06,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 35 transitions. [2023-02-16 04:30:06,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2023-02-16 04:30:06,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 7 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 04:30:06,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2023-02-16 04:30:06,389 INFO L240 hiAutomatonCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-02-16 04:30:06,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 04:30:06,389 INFO L428 stractBuchiCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-02-16 04:30:06,390 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-16 04:30:06,390 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 28 transitions. [2023-02-16 04:30:06,390 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-02-16 04:30:06,390 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-16 04:30:06,390 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-16 04:30:06,391 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:30:06,391 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-16 04:30:06,391 INFO L748 eck$LassoCheckResult]: Stem: 578#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 579#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 580#L20 assume !(main_~x~0#1 < 0); 572#L21 call main_#t~ret3#1 := g(main_~x~0#1);< 577#$Ultimate##0 ~x := #in~x; 583#L12 assume !(0 == ~x); 566#L15 call #t~ret0 := g(~x - 1);< 571#$Ultimate##0 ~x := #in~x; 584#L12 assume 0 == ~x;#res := 1; 565#gFINAL assume true; 567#gEXIT >#23#return; 569#L15-1 call #t~ret1 := g(1 + #t~ret0);< 581#$Ultimate##0 ~x := #in~x; 582#L12 assume !(0 == ~x); 568#L15 call #t~ret0 := g(~x - 1);< 570#$Ultimate##0 ~x := #in~x; 585#L12 assume !(0 == ~x); 574#L15 [2023-02-16 04:30:06,391 INFO L750 eck$LassoCheckResult]: Loop: 574#L15 call #t~ret0 := g(~x - 1);< 588#$Ultimate##0 ~x := #in~x; 586#L12 assume !(0 == ~x); 574#L15 [2023-02-16 04:30:06,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:30:06,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1443446059, now seen corresponding path program 2 times [2023-02-16 04:30:06,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:30:06,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751322364] [2023-02-16 04:30:06,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:30:06,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:30:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:30:06,397 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 04:30:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:30:06,401 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-16 04:30:06,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:30:06,402 INFO L85 PathProgramCache]: Analyzing trace with hash 50937, now seen corresponding path program 2 times [2023-02-16 04:30:06,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:30:06,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41913911] [2023-02-16 04:30:06,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:30:06,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:30:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:30:06,404 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 04:30:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:30:06,406 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-16 04:30:06,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:30:06,406 INFO L85 PathProgramCache]: Analyzing trace with hash -488954971, now seen corresponding path program 3 times [2023-02-16 04:30:06,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:30:06,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204293080] [2023-02-16 04:30:06,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:30:06,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:30:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:30:06,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-02-16 04:30:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:30:06,518 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 04:30:06,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:30:06,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204293080] [2023-02-16 04:30:06,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204293080] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 04:30:06,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914443955] [2023-02-16 04:30:06,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 04:30:06,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 04:30:06,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:06,520 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 04:30:06,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-02-16 04:30:06,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-16 04:30:06,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 04:30:06,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-16 04:30:06,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:30:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 04:30:06,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 04:30:06,636 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 04:30:06,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914443955] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 04:30:06,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 04:30:06,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2023-02-16 04:30:06,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620104779] [2023-02-16 04:30:06,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 04:30:06,660 INFO L210 LassoAnalysis]: Preferences: [2023-02-16 04:30:06,660 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-16 04:30:06,660 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-16 04:30:06,660 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-16 04:30:06,660 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-16 04:30:06,660 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:06,660 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-16 04:30:06,660 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-16 04:30:06,660 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration3_Loop [2023-02-16 04:30:06,660 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-16 04:30:06,660 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-16 04:30:06,661 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:06,663 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:06,664 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:06,668 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:30:06,696 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-16 04:30:06,696 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-16 04:30:06,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:06,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:06,698 INFO L229 MonitoredProcess]: Starting monitored process 34 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) [2023-02-16 04:30:06,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-02-16 04:30:06,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-16 04:30:06,701 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:30:06,722 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-16 04:30:06,722 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-16 04:30:06,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-02-16 04:30:06,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:06,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:06,726 INFO L229 MonitoredProcess]: Starting monitored process 35 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) [2023-02-16 04:30:06,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-02-16 04:30:06,730 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-16 04:30:06,730 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:30:06,750 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-16 04:30:06,751 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-16 04:30:06,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-02-16 04:30:06,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:06,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:06,758 INFO L229 MonitoredProcess]: Starting monitored process 36 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) [2023-02-16 04:30:06,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-02-16 04:30:06,761 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-16 04:30:06,761 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:30:06,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2023-02-16 04:30:06,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:06,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:06,789 INFO L229 MonitoredProcess]: Starting monitored process 37 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) [2023-02-16 04:30:06,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-02-16 04:30:06,792 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-16 04:30:06,792 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:30:06,898 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-16 04:30:06,898 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=-6, g_~x=-6} Honda state: {g_#in~x=-6, g_~x=-6} Generalized eigenvectors: [{g_#in~x=0, g_~x=0}, {g_#in~x=-1, g_~x=-1}, {g_#in~x=0, g_~x=0}] Lambdas: [12, 1, 7] Nus: [0, 0] [2023-02-16 04:30:06,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2023-02-16 04:30:06,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:30:06,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:30:06,906 INFO L229 MonitoredProcess]: Starting monitored process 38 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) [2023-02-16 04:30:06,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-02-16 04:30:06,909 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-16 04:30:06,910 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:30:06,930 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-16 04:30:06,930 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-16 04:30:06,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2023-02-16 04:30:06,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:30:06,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-16 04:30:06,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-02-16 04:30:06,937 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. cyclomatic complexity: 4 Second operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 6 states have internal predecessors, (13), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 04:30:06,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-02-16 04:30:07,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:30:07,051 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2023-02-16 04:30:07,051 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 29 transitions. [2023-02-16 04:30:07,051 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-02-16 04:30:07,052 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 28 states and 29 transitions. [2023-02-16 04:30:07,052 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2023-02-16 04:30:07,052 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2023-02-16 04:30:07,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 29 transitions. [2023-02-16 04:30:07,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-16 04:30:07,052 INFO L218 hiAutomatonCegarLoop]: Abstraction has 28 states and 29 transitions. [2023-02-16 04:30:07,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 29 transitions. [2023-02-16 04:30:07,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2023-02-16 04:30:07,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 04:30:07,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2023-02-16 04:30:07,054 INFO L240 hiAutomatonCegarLoop]: Abstraction has 22 states and 23 transitions. [2023-02-16 04:30:07,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 04:30:07,055 INFO L428 stractBuchiCegarLoop]: Abstraction has 22 states and 23 transitions. [2023-02-16 04:30:07,055 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-16 04:30:07,055 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 23 transitions. [2023-02-16 04:30:07,055 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-02-16 04:30:07,055 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-16 04:30:07,055 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-16 04:30:07,056 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 04:30:07,056 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 1, 1, 1, 1] [2023-02-16 04:30:07,056 INFO L748 eck$LassoCheckResult]: Stem: 775#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 776#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 777#L20 assume !(main_~x~0#1 < 0); 771#L21 call main_#t~ret3#1 := g(main_~x~0#1);< 774#$Ultimate##0 ~x := #in~x; 779#L12 assume !(0 == ~x); 770#L15 call #t~ret0 := g(~x - 1);< 772#$Ultimate##0 ~x := #in~x; 780#L12 assume 0 == ~x;#res := 1; 784#gFINAL assume true; 773#gEXIT >#23#return; 768#L15-1 [2023-02-16 04:30:07,056 INFO L750 eck$LassoCheckResult]: Loop: 768#L15-1 call #t~ret1 := g(1 + #t~ret0);< 782#$Ultimate##0 ~x := #in~x; 781#L12 assume !(0 == ~x); 767#L15 call #t~ret0 := g(~x - 1);< 769#$Ultimate##0 ~x := #in~x; 778#L12 assume !(0 == ~x); 765#L15 call #t~ret0 := g(~x - 1);< 783#$Ultimate##0 ~x := #in~x; 785#L12 assume 0 == ~x;#res := 1; 764#gFINAL assume true; 766#gEXIT >#23#return; 768#L15-1 [2023-02-16 04:30:07,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:30:07,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1676493545, now seen corresponding path program 2 times [2023-02-16 04:30:07,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:30:07,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361979806] [2023-02-16 04:30:07,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:30:07,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:30:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:30:07,060 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 04:30:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:30:07,062 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-16 04:30:07,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:30:07,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1133998729, now seen corresponding path program 2 times [2023-02-16 04:30:07,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:30:07,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859483961] [2023-02-16 04:30:07,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:30:07,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:30:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:30:07,066 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 04:30:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:30:07,068 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-16 04:30:07,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:30:07,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1734292557, now seen corresponding path program 4 times [2023-02-16 04:30:07,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:30:07,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549576375] [2023-02-16 04:30:07,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:30:07,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:30:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:30:07,073 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 04:30:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:30:07,077 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-16 04:30:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:30:07,263 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 04:30:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:30:07,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.02 04:30:07 BoogieIcfgContainer [2023-02-16 04:30:07,283 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-16 04:30:07,283 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 04:30:07,283 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 04:30:07,283 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 04:30:07,284 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 04:30:02" (3/4) ... [2023-02-16 04:30:07,285 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-02-16 04:30:07,304 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-16 04:30:07,305 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 04:30:07,307 INFO L158 Benchmark]: Toolchain (without parser) took 4971.83ms. Allocated memory was 109.1MB in the beginning and 148.9MB in the end (delta: 39.8MB). Free memory was 62.9MB in the beginning and 90.4MB in the end (delta: -27.5MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2023-02-16 04:30:07,307 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 109.1MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 04:30:07,307 INFO L158 Benchmark]: CACSL2BoogieTranslator took 130.04ms. Allocated memory is still 109.1MB. Free memory was 62.5MB in the beginning and 53.8MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-16 04:30:07,307 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.06ms. Allocated memory is still 109.1MB. Free memory was 53.8MB in the beginning and 52.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 04:30:07,307 INFO L158 Benchmark]: Boogie Preprocessor took 11.12ms. Allocated memory is still 109.1MB. Free memory was 52.5MB in the beginning and 51.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 04:30:07,308 INFO L158 Benchmark]: RCFGBuilder took 184.57ms. Allocated memory is still 109.1MB. Free memory was 51.4MB in the beginning and 80.9MB in the end (delta: -29.5MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2023-02-16 04:30:07,308 INFO L158 Benchmark]: BuchiAutomizer took 4596.70ms. Allocated memory was 109.1MB in the beginning and 148.9MB in the end (delta: 39.8MB). Free memory was 80.7MB in the beginning and 92.4MB in the end (delta: -11.7MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. [2023-02-16 04:30:07,308 INFO L158 Benchmark]: Witness Printer took 23.27ms. Allocated memory is still 148.9MB. Free memory was 92.4MB in the beginning and 90.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 04:30:07,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 109.1MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 130.04ms. Allocated memory is still 109.1MB. Free memory was 62.5MB in the beginning and 53.8MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.06ms. Allocated memory is still 109.1MB. Free memory was 53.8MB in the beginning and 52.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 11.12ms. Allocated memory is still 109.1MB. Free memory was 52.5MB in the beginning and 51.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 184.57ms. Allocated memory is still 109.1MB. Free memory was 51.4MB in the beginning and 80.9MB in the end (delta: -29.5MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 4596.70ms. Allocated memory was 109.1MB in the beginning and 148.9MB in the end (delta: 39.8MB). Free memory was 80.7MB in the beginning and 92.4MB in the end (delta: -11.7MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. * Witness Printer took 23.27ms. Allocated memory is still 148.9MB. Free memory was 92.4MB in the beginning and 90.4MB in the end (delta: 2.1MB). 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 4 terminating modules (2 trivial, 2 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function \old(x) and consists of 5 locations. One deterministic module has affine ranking function -2 * aux-g(x - 1)-aux + 1 and consists of 10 locations. 2 modules have a trivial ranking function, the largest among these consists of 11 locations. The remainder module has 22 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.5s and 4 iterations. TraceHistogramMax:4. Analysis of lassos took 3.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 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 [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 141 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 92 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 242 IncrementalHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 49 mSDtfsCounter, 242 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT1 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq194 hnf93 smp100 dnf134 smp100 tf103 neg95 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 86ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 14 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L19] int x = __VERIFIER_nondet_int(); [L20] COND FALSE !(x < 0) VAL [x=1] [L21] CALL g(x) VAL [\old(x)=1] [L12] COND FALSE !(x == 0) VAL [\old(x)=1, x=1] [L15] CALL g(x - 1) VAL [\old(x)=0] [L12] COND TRUE x == 0 [L13] return 1; VAL [\old(x)=0, \result=1, x=0] [L15] RET g(x - 1) VAL [\old(x)=1, g(x - 1)=1, x=1] Loop: [L15] CALL g(g(x - 1) + 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND TRUE x == 0 [L13] return 1; [L15] RET g(x - 1) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 15]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L19] int x = __VERIFIER_nondet_int(); [L20] COND FALSE !(x < 0) VAL [x=1] [L21] CALL g(x) VAL [\old(x)=1] [L12] COND FALSE !(x == 0) VAL [\old(x)=1, x=1] [L15] CALL g(x - 1) VAL [\old(x)=0] [L12] COND TRUE x == 0 [L13] return 1; VAL [\old(x)=0, \result=1, x=0] [L15] RET g(x - 1) VAL [\old(x)=1, g(x - 1)=1, x=1] Loop: [L15] CALL g(g(x - 1) + 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND TRUE x == 0 [L13] return 1; [L15] RET g(x - 1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-02-16 04:30:07,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-02-16 04:30:07,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-02-16 04:30:07,752 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)