./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 26d01a9c 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-lit/PodelskiRybalchenko-TACAS2011-Fig4.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 7fe3843d41a84d22889162aaa1c2b6d18f44faeeac702eea9c45f49a2c72d4bd --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 08:55:10,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 08:55:10,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 08:55:10,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 08:55:10,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 08:55:10,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 08:55:10,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 08:55:10,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 08:55:10,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 08:55:10,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 08:55:10,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 08:55:10,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 08:55:10,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 08:55:10,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 08:55:10,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 08:55:10,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 08:55:10,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 08:55:10,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 08:55:10,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 08:55:10,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 08:55:10,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 08:55:10,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 08:55:10,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 08:55:10,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 08:55:10,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 08:55:10,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 08:55:10,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 08:55:10,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 08:55:10,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 08:55:10,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 08:55:10,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 08:55:10,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 08:55:10,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 08:55:10,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 08:55:10,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 08:55:10,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 08:55:10,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 08:55:10,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 08:55:10,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 08:55:10,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 08:55:10,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 08:55:10,865 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-18 08:55:10,903 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 08:55:10,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 08:55:10,904 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 08:55:10,904 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 08:55:10,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 08:55:10,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 08:55:10,906 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 08:55:10,906 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-18 08:55:10,906 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-18 08:55:10,906 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-18 08:55:10,907 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-18 08:55:10,907 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-18 08:55:10,907 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-18 08:55:10,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 08:55:10,908 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 08:55:10,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 08:55:10,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 08:55:10,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-18 08:55:10,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-18 08:55:10,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-18 08:55:10,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 08:55:10,909 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-18 08:55:10,909 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 08:55:10,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-18 08:55:10,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 08:55:10,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 08:55:10,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 08:55:10,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 08:55:10,912 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-18 08:55:10,912 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7fe3843d41a84d22889162aaa1c2b6d18f44faeeac702eea9c45f49a2c72d4bd [2023-02-18 08:55:11,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 08:55:11,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 08:55:11,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 08:55:11,181 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 08:55:11,181 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 08:55:11,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c [2023-02-18 08:55:12,323 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 08:55:12,476 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 08:55:12,477 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c [2023-02-18 08:55:12,482 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/123ad335e/700c51604faf4c21a00ad62ccf8c7dcd/FLAG3104f0a6a [2023-02-18 08:55:12,502 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/123ad335e/700c51604faf4c21a00ad62ccf8c7dcd [2023-02-18 08:55:12,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 08:55:12,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 08:55:12,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 08:55:12,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 08:55:12,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 08:55:12,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 08:55:12" (1/1) ... [2023-02-18 08:55:12,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75dc89cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:55:12, skipping insertion in model container [2023-02-18 08:55:12,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 08:55:12" (1/1) ... [2023-02-18 08:55:12,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 08:55:12,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 08:55:12,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 08:55:12,651 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 08:55:12,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 08:55:12,670 INFO L208 MainTranslator]: Completed translation [2023-02-18 08:55:12,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:55:12 WrapperNode [2023-02-18 08:55:12,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 08:55:12,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 08:55:12,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 08:55:12,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 08:55:12,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:55:12" (1/1) ... [2023-02-18 08:55:12,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:55:12" (1/1) ... [2023-02-18 08:55:12,696 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2023-02-18 08:55:12,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 08:55:12,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 08:55:12,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 08:55:12,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 08:55:12,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:55:12" (1/1) ... [2023-02-18 08:55:12,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:55:12" (1/1) ... [2023-02-18 08:55:12,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:55:12" (1/1) ... [2023-02-18 08:55:12,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:55:12" (1/1) ... [2023-02-18 08:55:12,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:55:12" (1/1) ... [2023-02-18 08:55:12,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:55:12" (1/1) ... [2023-02-18 08:55:12,710 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:55:12" (1/1) ... [2023-02-18 08:55:12,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:55:12" (1/1) ... [2023-02-18 08:55:12,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 08:55:12,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 08:55:12,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 08:55:12,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 08:55:12,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:55:12" (1/1) ... [2023-02-18 08:55:12,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:12,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:12,748 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) [2023-02-18 08:55:12,753 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 [2023-02-18 08:55:12,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 08:55:12,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 08:55:12,845 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 08:55:12,847 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 08:55:12,934 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 08:55:12,944 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 08:55:12,947 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 08:55:12,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 08:55:12 BoogieIcfgContainer [2023-02-18 08:55:12,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 08:55:12,951 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-18 08:55:12,952 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-18 08:55:12,955 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-18 08:55:12,956 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-18 08:55:12,956 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.02 08:55:12" (1/3) ... [2023-02-18 08:55:12,957 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e0487fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.02 08:55:12, skipping insertion in model container [2023-02-18 08:55:12,957 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-18 08:55:12,957 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:55:12" (2/3) ... [2023-02-18 08:55:12,958 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e0487fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.02 08:55:12, skipping insertion in model container [2023-02-18 08:55:12,958 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-18 08:55:12,958 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 08:55:12" (3/3) ... [2023-02-18 08:55:12,959 INFO L332 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig4.c [2023-02-18 08:55:13,044 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-18 08:55:13,045 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-18 08:55:13,045 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-18 08:55:13,045 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-18 08:55:13,064 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-18 08:55:13,064 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-18 08:55:13,065 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-18 08:55:13,065 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-18 08:55:13,070 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:55:13,087 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-18 08:55:13,087 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-18 08:55:13,088 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-18 08:55:13,092 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-18 08:55:13,092 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-18 08:55:13,092 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-18 08:55:13,092 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:55:13,094 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-18 08:55:13,094 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-18 08:55:13,094 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-18 08:55:13,095 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-18 08:55:13,095 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-18 08:55:13,102 INFO L748 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 6#L18-2true [2023-02-18 08:55:13,102 INFO L750 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 3#L18true assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := main_~y~0#1 - 1; 6#L18-2true [2023-02-18 08:55:13,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:55:13,108 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-02-18 08:55:13,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:55:13,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243165935] [2023-02-18 08:55:13,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:55:13,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:55:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:13,193 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 08:55:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:13,220 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 08:55:13,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:55:13,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2023-02-18 08:55:13,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:55:13,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867799328] [2023-02-18 08:55:13,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:55:13,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:55:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:13,237 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 08:55:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:13,242 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 08:55:13,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:55:13,244 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2023-02-18 08:55:13,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:55:13,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859771776] [2023-02-18 08:55:13,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:55:13,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:55:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:13,252 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 08:55:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:13,256 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 08:55:13,280 INFO L210 LassoAnalysis]: Preferences: [2023-02-18 08:55:13,281 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-18 08:55:13,281 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-18 08:55:13,281 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-18 08:55:13,281 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-18 08:55:13,282 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:13,282 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-18 08:55:13,282 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-18 08:55:13,282 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration1_Loop [2023-02-18 08:55:13,282 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-18 08:55:13,283 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-18 08:55:13,301 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:13,314 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:13,336 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:13,339 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:13,340 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:13,352 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-18 08:55:13,354 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-18 08:55:13,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:13,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:13,363 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) [2023-02-18 08:55:13,369 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 08:55:13,369 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:55:13,380 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 [2023-02-18 08:55:13,400 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-18 08:55:13,400 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-18 08:55:13,408 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 [2023-02-18 08:55:13,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:13,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:13,411 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) [2023-02-18 08:55:13,416 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 [2023-02-18 08:55:13,419 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 08:55:13,420 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:55:13,441 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-18 08:55:13,441 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-18 08:55:13,449 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 [2023-02-18 08:55:13,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:13,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:13,451 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) [2023-02-18 08:55:13,465 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 [2023-02-18 08:55:13,466 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 08:55:13,473 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:55:13,498 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 [2023-02-18 08:55:13,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:13,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:13,506 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) [2023-02-18 08:55:13,552 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 [2023-02-18 08:55:13,552 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-18 08:55:13,553 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:55:13,589 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-18 08:55:13,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-02-18 08:55:13,592 INFO L210 LassoAnalysis]: Preferences: [2023-02-18 08:55:13,593 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-18 08:55:13,593 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-18 08:55:13,593 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-18 08:55:13,593 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-18 08:55:13,593 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:13,593 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-18 08:55:13,593 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-18 08:55:13,593 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration1_Loop [2023-02-18 08:55:13,593 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-18 08:55:13,593 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-18 08:55:13,595 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:13,602 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:13,605 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:13,613 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:13,615 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:13,620 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-18 08:55:13,625 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-18 08:55:13,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:13,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:13,627 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) [2023-02-18 08:55:13,629 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 [2023-02-18 08:55:13,631 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 [2023-02-18 08:55:13,639 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-18 08:55:13,640 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-18 08:55:13,640 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-18 08:55:13,640 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-18 08:55:13,651 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-18 08:55:13,653 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-18 08:55:13,685 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-18 08:55:13,689 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 [2023-02-18 08:55:13,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:13,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:13,691 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) [2023-02-18 08:55:13,693 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 [2023-02-18 08:55:13,694 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 [2023-02-18 08:55:13,701 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-18 08:55:13,702 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-18 08:55:13,702 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-18 08:55:13,702 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-18 08:55:13,704 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-18 08:55:13,705 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-18 08:55:13,729 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-18 08:55:13,732 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 [2023-02-18 08:55:13,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:13,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:13,734 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) [2023-02-18 08:55:13,736 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 [2023-02-18 08:55:13,738 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 [2023-02-18 08:55:13,746 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-18 08:55:13,746 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-18 08:55:13,746 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-18 08:55:13,746 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-18 08:55:13,746 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-18 08:55:13,748 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-18 08:55:13,748 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-18 08:55:13,769 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-18 08:55:13,774 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-18 08:55:13,774 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-18 08:55:13,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:13,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:13,810 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) [2023-02-18 08:55:13,812 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 [2023-02-18 08:55:13,866 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-18 08:55:13,866 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-18 08:55:13,866 INFO L513 LassoAnalysis]: Proved termination. [2023-02-18 08:55:13,867 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2023-02-18 08:55:13,871 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 [2023-02-18 08:55:13,873 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-18 08:55:13,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:55:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:55:13,897 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 08:55:13,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:55:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:55:13,909 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 08:55:13,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:55:13,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:55:13,946 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-18 08:55:13,948 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:55:13,980 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 31 transitions. Complement of second has 8 states. [2023-02-18 08:55:13,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-02-18 08:55:13,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:55:13,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2023-02-18 08:55:13,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 2 letters. Loop has 2 letters. [2023-02-18 08:55:13,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 08:55:13,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 2 letters. [2023-02-18 08:55:13,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 08:55:13,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2023-02-18 08:55:13,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 08:55:13,991 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2023-02-18 08:55:13,994 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-18 08:55:13,997 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2023-02-18 08:55:13,998 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-02-18 08:55:13,998 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-02-18 08:55:13,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2023-02-18 08:55:13,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-18 08:55:13,999 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-02-18 08:55:14,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2023-02-18 08:55:14,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-02-18 08:55:14,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:55:14,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2023-02-18 08:55:14,022 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-02-18 08:55:14,022 INFO L428 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-02-18 08:55:14,022 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-18 08:55:14,023 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2023-02-18 08:55:14,023 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-18 08:55:14,023 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-18 08:55:14,024 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-18 08:55:14,024 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-02-18 08:55:14,024 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-18 08:55:14,024 INFO L748 eck$LassoCheckResult]: Stem: 76#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 77#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 78#L18-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 71#L18 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 72#L18-2 [2023-02-18 08:55:14,025 INFO L750 eck$LassoCheckResult]: Loop: 72#L18-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 75#L18 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := main_~y~0#1 - 1; 72#L18-2 [2023-02-18 08:55:14,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:55:14,025 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2023-02-18 08:55:14,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:55:14,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004584152] [2023-02-18 08:55:14,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:55:14,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:55:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:14,032 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 08:55:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:14,037 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 08:55:14,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:55:14,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2023-02-18 08:55:14,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:55:14,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465670641] [2023-02-18 08:55:14,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:55:14,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:55:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:14,043 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 08:55:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:14,046 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 08:55:14,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:55:14,047 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2023-02-18 08:55:14,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:55:14,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022415434] [2023-02-18 08:55:14,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:55:14,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:55:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:14,056 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 08:55:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:14,062 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 08:55:14,064 INFO L210 LassoAnalysis]: Preferences: [2023-02-18 08:55:14,065 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-18 08:55:14,065 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-18 08:55:14,065 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-18 08:55:14,065 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-18 08:55:14,065 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,065 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-18 08:55:14,066 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-18 08:55:14,066 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration2_Loop [2023-02-18 08:55:14,066 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-18 08:55:14,066 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-18 08:55:14,067 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:14,069 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:14,070 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:14,071 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:14,072 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:14,076 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-18 08:55:14,076 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-18 08:55:14,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:14,078 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) [2023-02-18 08:55:14,089 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 [2023-02-18 08:55:14,090 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 08:55:14,090 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:55:14,112 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-18 08:55:14,112 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-18 08:55:14,119 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 [2023-02-18 08:55:14,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:14,121 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) [2023-02-18 08:55:14,123 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 [2023-02-18 08:55:14,125 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 08:55:14,125 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:55:14,138 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-18 08:55:14,138 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-18 08:55:14,141 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 [2023-02-18 08:55:14,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:14,145 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) [2023-02-18 08:55:14,146 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 [2023-02-18 08:55:14,147 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 08:55:14,147 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:55:14,179 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-18 08:55:14,179 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=0} Honda state: {ULTIMATE.start_main_#t~nondet2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-18 08:55:14,183 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 [2023-02-18 08:55:14,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:14,184 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) [2023-02-18 08:55:14,186 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 [2023-02-18 08:55:14,187 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 08:55:14,188 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:55:14,199 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-18 08:55:14,200 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=1} Honda state: {ULTIMATE.start_main_~x~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-18 08:55:14,205 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 [2023-02-18 08:55:14,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:14,207 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) [2023-02-18 08:55:14,208 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 [2023-02-18 08:55:14,211 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 08:55:14,211 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:55:14,222 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 [2023-02-18 08:55:14,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:14,224 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) [2023-02-18 08:55:14,225 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 [2023-02-18 08:55:14,229 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-18 08:55:14,229 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:55:14,250 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-18 08:55:14,254 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 [2023-02-18 08:55:14,254 INFO L210 LassoAnalysis]: Preferences: [2023-02-18 08:55:14,254 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-18 08:55:14,254 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-18 08:55:14,255 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-18 08:55:14,255 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-18 08:55:14,255 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,255 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-18 08:55:14,255 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-18 08:55:14,255 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration2_Loop [2023-02-18 08:55:14,255 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-18 08:55:14,255 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-18 08:55:14,256 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:14,258 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:14,259 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:14,260 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:14,261 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:14,265 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-18 08:55:14,265 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-18 08:55:14,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:14,266 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) [2023-02-18 08:55:14,273 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 [2023-02-18 08:55:14,274 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 [2023-02-18 08:55:14,280 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-18 08:55:14,280 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-18 08:55:14,280 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-18 08:55:14,280 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-18 08:55:14,283 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-18 08:55:14,283 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-18 08:55:14,293 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-18 08:55:14,297 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 [2023-02-18 08:55:14,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:14,299 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) [2023-02-18 08:55:14,301 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 [2023-02-18 08:55:14,303 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 [2023-02-18 08:55:14,309 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-18 08:55:14,310 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-18 08:55:14,310 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-18 08:55:14,310 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-18 08:55:14,310 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-18 08:55:14,311 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-18 08:55:14,311 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-18 08:55:14,317 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-18 08:55:14,321 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 [2023-02-18 08:55:14,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:14,322 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) [2023-02-18 08:55:14,324 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 [2023-02-18 08:55:14,326 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 [2023-02-18 08:55:14,332 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-18 08:55:14,333 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-18 08:55:14,333 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-18 08:55:14,333 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-18 08:55:14,337 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-18 08:55:14,337 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-18 08:55:14,366 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-18 08:55:14,369 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 [2023-02-18 08:55:14,373 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 [2023-02-18 08:55:14,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:14,375 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) [2023-02-18 08:55:14,377 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 [2023-02-18 08:55:14,379 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 [2023-02-18 08:55:14,387 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-18 08:55:14,387 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-18 08:55:14,387 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-18 08:55:14,387 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-18 08:55:14,387 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-18 08:55:14,388 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-18 08:55:14,388 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-18 08:55:14,399 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-18 08:55:14,405 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 [2023-02-18 08:55:14,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:14,406 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) [2023-02-18 08:55:14,409 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 [2023-02-18 08:55:14,410 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 [2023-02-18 08:55:14,417 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-18 08:55:14,417 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-18 08:55:14,417 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-18 08:55:14,417 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-18 08:55:14,417 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-18 08:55:14,418 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-18 08:55:14,418 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-18 08:55:14,433 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-18 08:55:14,436 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-18 08:55:14,436 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-18 08:55:14,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:14,441 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) [2023-02-18 08:55:14,444 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 [2023-02-18 08:55:14,445 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-18 08:55:14,445 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-18 08:55:14,445 INFO L513 LassoAnalysis]: Proved termination. [2023-02-18 08:55:14,445 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2023-02-18 08:55:14,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-02-18 08:55:14,456 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-18 08:55:14,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:55:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:55:14,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 08:55:14,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:55:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:55:14,489 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 08:55:14,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:55:14,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:55:14,497 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-18 08:55:14,497 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:55:14,511 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 17 transitions. Complement of second has 5 states. [2023-02-18 08:55:14,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-18 08:55:14,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:55:14,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2023-02-18 08:55:14,513 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2023-02-18 08:55:14,513 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 08:55:14,513 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2023-02-18 08:55:14,514 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 08:55:14,514 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2023-02-18 08:55:14,514 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 08:55:14,514 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2023-02-18 08:55:14,516 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-18 08:55:14,517 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2023-02-18 08:55:14,517 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2023-02-18 08:55:14,517 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-02-18 08:55:14,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2023-02-18 08:55:14,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-18 08:55:14,518 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2023-02-18 08:55:14,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2023-02-18 08:55:14,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-02-18 08:55:14,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:55:14,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2023-02-18 08:55:14,521 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2023-02-18 08:55:14,521 INFO L428 stractBuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2023-02-18 08:55:14,521 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-18 08:55:14,521 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2023-02-18 08:55:14,523 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-18 08:55:14,523 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-18 08:55:14,523 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-18 08:55:14,523 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2023-02-18 08:55:14,523 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-18 08:55:14,524 INFO L748 eck$LassoCheckResult]: Stem: 135#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 136#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 137#L18-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 129#L18 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 130#L18-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 138#L18 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 133#L18-2 [2023-02-18 08:55:14,524 INFO L750 eck$LassoCheckResult]: Loop: 133#L18-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 134#L18 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := main_~y~0#1 - 1; 133#L18-2 [2023-02-18 08:55:14,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:55:14,524 INFO L85 PathProgramCache]: Analyzing trace with hash 889692233, now seen corresponding path program 2 times [2023-02-18 08:55:14,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:55:14,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598484863] [2023-02-18 08:55:14,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:55:14,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:55:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:14,555 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 08:55:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:14,560 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 08:55:14,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:55:14,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 3 times [2023-02-18 08:55:14,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:55:14,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791098417] [2023-02-18 08:55:14,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:55:14,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:55:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:14,565 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 08:55:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:14,567 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 08:55:14,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:55:14,568 INFO L85 PathProgramCache]: Analyzing trace with hash 295744366, now seen corresponding path program 2 times [2023-02-18 08:55:14,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:55:14,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836201296] [2023-02-18 08:55:14,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:55:14,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:55:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:14,575 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 08:55:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:14,581 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 08:55:14,583 INFO L210 LassoAnalysis]: Preferences: [2023-02-18 08:55:14,583 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-18 08:55:14,583 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-18 08:55:14,583 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-18 08:55:14,583 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-18 08:55:14,583 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,583 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-18 08:55:14,583 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-18 08:55:14,583 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration3_Loop [2023-02-18 08:55:14,583 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-18 08:55:14,583 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-18 08:55:14,584 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:14,585 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:14,586 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:14,587 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:14,588 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:14,591 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-18 08:55:14,591 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-18 08:55:14,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:14,593 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) [2023-02-18 08:55:14,595 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 [2023-02-18 08:55:14,597 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 08:55:14,597 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:55:14,618 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-18 08:55:14,618 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=1} Honda state: {ULTIMATE.start_main_~x~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-18 08:55:14,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-02-18 08:55:14,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:14,627 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) [2023-02-18 08:55:14,633 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 08:55:14,633 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:55:14,648 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 [2023-02-18 08:55:14,653 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-18 08:55:14,654 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-18 08:55:14,659 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 [2023-02-18 08:55:14,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:14,660 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) [2023-02-18 08:55:14,662 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 [2023-02-18 08:55:14,664 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 08:55:14,664 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:55:14,675 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 [2023-02-18 08:55:14,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:14,676 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2023-02-18 08:55:14,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-02-18 08:55:14,680 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-18 08:55:14,680 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:55:14,702 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-18 08:55:14,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-02-18 08:55:14,707 INFO L210 LassoAnalysis]: Preferences: [2023-02-18 08:55:14,707 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-18 08:55:14,707 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-18 08:55:14,707 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-18 08:55:14,707 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-18 08:55:14,707 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,707 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-18 08:55:14,707 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-18 08:55:14,707 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration3_Loop [2023-02-18 08:55:14,708 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-18 08:55:14,708 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-18 08:55:14,709 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:14,713 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:14,714 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:14,716 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:14,717 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:14,721 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-18 08:55:14,722 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-18 08:55:14,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:14,724 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) [2023-02-18 08:55:14,734 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 [2023-02-18 08:55:14,743 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-18 08:55:14,743 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-18 08:55:14,743 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-18 08:55:14,743 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-18 08:55:14,743 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-18 08:55:14,744 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-18 08:55:14,744 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-18 08:55:14,749 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 [2023-02-18 08:55:14,757 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-18 08:55:14,765 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 [2023-02-18 08:55:14,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:14,766 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) [2023-02-18 08:55:14,773 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 [2023-02-18 08:55:14,781 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-18 08:55:14,781 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-18 08:55:14,781 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-18 08:55:14,782 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-18 08:55:14,784 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-18 08:55:14,784 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-18 08:55:14,787 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 [2023-02-18 08:55:14,795 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-18 08:55:14,805 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 [2023-02-18 08:55:14,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:14,806 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) [2023-02-18 08:55:14,810 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 [2023-02-18 08:55:14,818 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-18 08:55:14,818 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-18 08:55:14,818 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-18 08:55:14,818 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-18 08:55:14,818 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-18 08:55:14,819 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-18 08:55:14,819 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-18 08:55:14,821 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 [2023-02-18 08:55:14,833 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-18 08:55:14,836 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-18 08:55:14,836 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-18 08:55:14,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:14,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:14,838 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) [2023-02-18 08:55:14,840 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 [2023-02-18 08:55:14,841 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-18 08:55:14,841 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-18 08:55:14,842 INFO L513 LassoAnalysis]: Proved termination. [2023-02-18 08:55:14,842 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2023-02-18 08:55:14,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-02-18 08:55:14,849 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-18 08:55:14,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:55:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:55:14,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 08:55:14,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:55:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:55:14,876 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 08:55:14,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:55:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:55:14,885 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-18 08:55:14,885 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:55:14,900 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 21 transitions. Complement of second has 5 states. [2023-02-18 08:55:14,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-18 08:55:14,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:55:14,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2023-02-18 08:55:14,902 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2023-02-18 08:55:14,902 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 08:55:14,902 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-18 08:55:14,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:55:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:55:14,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 08:55:14,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:55:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:55:14,933 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 08:55:14,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:55:14,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:55:14,943 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-18 08:55:14,944 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:55:14,958 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 21 transitions. Complement of second has 5 states. [2023-02-18 08:55:14,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-18 08:55:14,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:55:14,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2023-02-18 08:55:14,961 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2023-02-18 08:55:14,961 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 08:55:14,961 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-18 08:55:14,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:55:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:55:14,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 08:55:14,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:55:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:55:14,989 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 08:55:14,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:55:14,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:55:14,997 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-18 08:55:14,998 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:55:15,014 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 24 transitions. Complement of second has 4 states. [2023-02-18 08:55:15,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-18 08:55:15,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:55:15,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2023-02-18 08:55:15,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2023-02-18 08:55:15,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 08:55:15,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2023-02-18 08:55:15,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 08:55:15,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2023-02-18 08:55:15,019 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 08:55:15,019 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 24 transitions. [2023-02-18 08:55:15,022 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-18 08:55:15,022 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 20 transitions. [2023-02-18 08:55:15,022 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-02-18 08:55:15,022 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-02-18 08:55:15,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2023-02-18 08:55:15,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-18 08:55:15,023 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2023-02-18 08:55:15,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2023-02-18 08:55:15,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 6. [2023-02-18 08:55:15,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:55:15,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2023-02-18 08:55:15,026 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6 states and 8 transitions. [2023-02-18 08:55:15,026 INFO L428 stractBuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2023-02-18 08:55:15,026 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-18 08:55:15,026 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2023-02-18 08:55:15,026 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-18 08:55:15,026 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-18 08:55:15,026 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-18 08:55:15,026 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-18 08:55:15,026 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-18 08:55:15,027 INFO L748 eck$LassoCheckResult]: Stem: 290#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 291#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 287#L18-2 [2023-02-18 08:55:15,027 INFO L750 eck$LassoCheckResult]: Loop: 287#L18-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 286#L18 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 287#L18-2 [2023-02-18 08:55:15,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:55:15,027 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2023-02-18 08:55:15,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:55:15,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762860055] [2023-02-18 08:55:15,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:55:15,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:55:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:15,035 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 08:55:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:15,038 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 08:55:15,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:55:15,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2023-02-18 08:55:15,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:55:15,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836695912] [2023-02-18 08:55:15,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:55:15,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:55:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:15,053 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 08:55:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:15,062 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 08:55:15,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:55:15,063 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 3 times [2023-02-18 08:55:15,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:55:15,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539876799] [2023-02-18 08:55:15,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:55:15,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:55:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:15,070 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 08:55:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:55:15,078 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 08:55:15,086 INFO L210 LassoAnalysis]: Preferences: [2023-02-18 08:55:15,086 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-18 08:55:15,087 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-18 08:55:15,087 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-18 08:55:15,087 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-18 08:55:15,087 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:15,087 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-18 08:55:15,087 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-18 08:55:15,087 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration4_Loop [2023-02-18 08:55:15,087 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-18 08:55:15,087 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-18 08:55:15,090 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:15,092 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:15,094 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:15,097 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:15,097 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:15,101 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-18 08:55:15,101 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-18 08:55:15,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:15,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:15,102 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) [2023-02-18 08:55:15,105 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 [2023-02-18 08:55:15,106 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 08:55:15,106 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:55:15,126 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-18 08:55:15,126 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3#1=4, ULTIMATE.start_main_~y~0#1=4} Honda state: {ULTIMATE.start_main_#t~nondet3#1=4, ULTIMATE.start_main_~y~0#1=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-18 08:55:15,133 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 [2023-02-18 08:55:15,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:15,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:15,135 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) [2023-02-18 08:55:15,138 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 [2023-02-18 08:55:15,140 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 08:55:15,140 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:55:15,169 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-18 08:55:15,169 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-18 08:55:15,176 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 [2023-02-18 08:55:15,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:15,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:15,178 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) [2023-02-18 08:55:15,180 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 [2023-02-18 08:55:15,181 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 08:55:15,182 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:55:15,195 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-18 08:55:15,195 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=-1} Honda state: {ULTIMATE.start_main_#t~nondet2#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-18 08:55:15,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2023-02-18 08:55:15,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:15,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:15,200 INFO L229 MonitoredProcess]: Starting monitored process 33 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) [2023-02-18 08:55:15,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-02-18 08:55:15,203 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 08:55:15,203 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:55:15,218 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-18 08:55:15,219 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-18 08:55:15,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-02-18 08:55:15,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:15,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:15,224 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) [2023-02-18 08:55:15,229 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 08:55:15,229 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:55:15,238 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 [2023-02-18 08:55:15,257 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 [2023-02-18 08:55:15,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:15,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:15,259 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) [2023-02-18 08:55:15,265 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 [2023-02-18 08:55:15,305 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-18 08:55:15,305 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:55:15,322 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-18 08:55:15,326 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 [2023-02-18 08:55:15,326 INFO L210 LassoAnalysis]: Preferences: [2023-02-18 08:55:15,326 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-18 08:55:15,326 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-18 08:55:15,326 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-18 08:55:15,326 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-18 08:55:15,326 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:15,327 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-18 08:55:15,327 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-18 08:55:15,327 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration4_Loop [2023-02-18 08:55:15,327 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-18 08:55:15,327 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-18 08:55:15,328 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:15,330 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:15,331 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:15,332 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:15,333 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:55:15,337 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-18 08:55:15,338 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-18 08:55:15,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:15,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:15,342 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) [2023-02-18 08:55:15,357 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 [2023-02-18 08:55:15,365 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-18 08:55:15,366 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-18 08:55:15,366 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-18 08:55:15,366 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-18 08:55:15,366 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-18 08:55:15,367 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-18 08:55:15,367 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-18 08:55:15,369 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 [2023-02-18 08:55:15,385 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-18 08:55:15,390 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 [2023-02-18 08:55:15,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:15,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:15,394 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) [2023-02-18 08:55:15,396 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 [2023-02-18 08:55:15,397 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 [2023-02-18 08:55:15,405 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-18 08:55:15,405 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-18 08:55:15,405 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-18 08:55:15,405 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-18 08:55:15,407 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-18 08:55:15,407 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-18 08:55:15,421 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-18 08:55:15,427 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 [2023-02-18 08:55:15,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:15,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:15,429 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) [2023-02-18 08:55:15,433 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 [2023-02-18 08:55:15,434 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 [2023-02-18 08:55:15,440 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-18 08:55:15,440 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-18 08:55:15,440 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-18 08:55:15,440 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-18 08:55:15,440 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-18 08:55:15,441 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-18 08:55:15,441 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-18 08:55:15,456 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-18 08:55:15,459 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-02-18 08:55:15,459 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-18 08:55:15,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:55:15,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:55:15,469 INFO L229 MonitoredProcess]: Starting monitored process 39 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) [2023-02-18 08:55:15,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-02-18 08:55:15,471 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-18 08:55:15,471 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-18 08:55:15,471 INFO L513 LassoAnalysis]: Proved termination. [2023-02-18 08:55:15,471 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2023-02-18 08:55:15,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2023-02-18 08:55:15,475 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-18 08:55:15,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:55:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:55:15,489 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 08:55:15,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:55:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:55:15,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 08:55:15,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:55:15,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:55:15,503 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-18 08:55:15,503 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:55:15,510 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 18 transitions. Complement of second has 4 states. [2023-02-18 08:55:15,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-18 08:55:15,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:55:15,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-02-18 08:55:15,512 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 2 letters. [2023-02-18 08:55:15,512 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 08:55:15,512 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 2 letters. [2023-02-18 08:55:15,512 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 08:55:15,512 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 4 letters. [2023-02-18 08:55:15,513 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 08:55:15,513 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 18 transitions. [2023-02-18 08:55:15,513 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-18 08:55:15,513 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 0 states and 0 transitions. [2023-02-18 08:55:15,514 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-18 08:55:15,514 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-18 08:55:15,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-18 08:55:15,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 08:55:15,514 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 08:55:15,514 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 08:55:15,514 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 08:55:15,514 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-02-18 08:55:15,515 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-02-18 08:55:15,515 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-18 08:55:15,515 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-02-18 08:55:15,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.02 08:55:15 BoogieIcfgContainer [2023-02-18 08:55:15,521 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-18 08:55:15,522 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 08:55:15,522 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 08:55:15,522 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 08:55:15,523 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 08:55:12" (3/4) ... [2023-02-18 08:55:15,525 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-18 08:55:15,525 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 08:55:15,526 INFO L158 Benchmark]: Toolchain (without parser) took 3019.30ms. Allocated memory was 111.1MB in the beginning and 155.2MB in the end (delta: 44.0MB). Free memory was 66.7MB in the beginning and 63.8MB in the end (delta: 2.9MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. [2023-02-18 08:55:15,526 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 111.1MB. Free memory was 84.0MB in the beginning and 83.9MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 08:55:15,526 INFO L158 Benchmark]: CACSL2BoogieTranslator took 162.06ms. Allocated memory is still 111.1MB. Free memory was 66.3MB in the beginning and 57.6MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-18 08:55:15,526 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.20ms. Allocated memory is still 111.1MB. Free memory was 57.6MB in the beginning and 56.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 08:55:15,527 INFO L158 Benchmark]: Boogie Preprocessor took 13.51ms. Allocated memory is still 111.1MB. Free memory was 56.3MB in the beginning and 55.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 08:55:15,527 INFO L158 Benchmark]: RCFGBuilder took 238.25ms. Allocated memory is still 111.1MB. Free memory was 55.1MB in the beginning and 47.1MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-18 08:55:15,527 INFO L158 Benchmark]: BuchiAutomizer took 2569.90ms. Allocated memory was 111.1MB in the beginning and 155.2MB in the end (delta: 44.0MB). Free memory was 47.1MB in the beginning and 63.8MB in the end (delta: -16.7MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. [2023-02-18 08:55:15,528 INFO L158 Benchmark]: Witness Printer took 3.28ms. Allocated memory is still 155.2MB. Free memory is still 63.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 08:55:15,529 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 111.1MB. Free memory was 84.0MB in the beginning and 83.9MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 162.06ms. Allocated memory is still 111.1MB. Free memory was 66.3MB in the beginning and 57.6MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.20ms. Allocated memory is still 111.1MB. Free memory was 57.6MB in the beginning and 56.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.51ms. Allocated memory is still 111.1MB. Free memory was 56.3MB in the beginning and 55.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 238.25ms. Allocated memory is still 111.1MB. Free memory was 55.1MB in the beginning and 47.1MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2569.90ms. Allocated memory was 111.1MB in the beginning and 155.2MB in the end (delta: 44.0MB). Free memory was 47.1MB in the beginning and 63.8MB in the end (delta: -16.7MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. * Witness Printer took 3.28ms. Allocated memory is still 155.2MB. Free memory is still 63.8MB. There was no memory consumed. 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 (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function y and consists of 3 locations. One deterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 33 mSDtfsCounter, 34 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax171 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 59ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 12 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-02-18 08:55:15,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2023-02-18 08:55:15,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2023-02-18 08:55:15,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2023-02-18 08:55:16,145 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 Result: TRUE