./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c --full-output -ea --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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/BrockschmidtCookFuhs-CAV2013-Introduction.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 cf5951cf7c939342bb5d014c8a7a12e4f95042e50c8d2f477b21d0a3234d49fe --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-21 03:24:46,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-21 03:24:46,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-21 03:24:46,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-21 03:24:46,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-21 03:24:46,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-21 03:24:46,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-21 03:24:46,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-21 03:24:46,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-21 03:24:46,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-21 03:24:46,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-21 03:24:46,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-21 03:24:46,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-21 03:24:46,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-21 03:24:46,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-21 03:24:46,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-21 03:24:46,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-21 03:24:46,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-21 03:24:46,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-21 03:24:46,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-21 03:24:46,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-21 03:24:46,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-21 03:24:46,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-21 03:24:46,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-21 03:24:46,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-21 03:24:46,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-21 03:24:46,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-21 03:24:46,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-21 03:24:46,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-21 03:24:46,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-21 03:24:46,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-21 03:24:46,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-21 03:24:46,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-21 03:24:46,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-21 03:24:46,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-21 03:24:46,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-21 03:24:46,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-21 03:24:46,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-21 03:24:46,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-21 03:24:46,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-21 03:24:46,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-21 03:24:46,833 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-02-21 03:24:46,848 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-21 03:24:46,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-21 03:24:46,850 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-21 03:24:46,850 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-21 03:24:46,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-21 03:24:46,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-21 03:24:46,853 INFO L138 SettingsManager]: * Use SBE=true [2022-02-21 03:24:46,853 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-02-21 03:24:46,853 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-02-21 03:24:46,853 INFO L138 SettingsManager]: * Use old map elimination=false [2022-02-21 03:24:46,854 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-02-21 03:24:46,854 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-02-21 03:24:46,855 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-02-21 03:24:46,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-21 03:24:46,855 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-02-21 03:24:46,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-21 03:24:46,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-21 03:24:46,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-02-21 03:24:46,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-02-21 03:24:46,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-02-21 03:24:46,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-21 03:24:46,856 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-02-21 03:24:46,856 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-21 03:24:46,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-02-21 03:24:46,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-21 03:24:46,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-21 03:24:46,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-21 03:24:46,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-21 03:24:46,858 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-21 03:24:46,858 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf5951cf7c939342bb5d014c8a7a12e4f95042e50c8d2f477b21d0a3234d49fe [2022-02-21 03:24:47,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-21 03:24:47,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-21 03:24:47,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-21 03:24:47,173 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-21 03:24:47,174 INFO L275 PluginConnector]: CDTParser initialized [2022-02-21 03:24:47,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c [2022-02-21 03:24:47,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88799ae73/161bc3c6872d4af782e1541ebc71e44c/FLAG3ef28d8f4 [2022-02-21 03:24:47,537 INFO L306 CDTParser]: Found 1 translation units. [2022-02-21 03:24:47,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c [2022-02-21 03:24:47,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88799ae73/161bc3c6872d4af782e1541ebc71e44c/FLAG3ef28d8f4 [2022-02-21 03:24:47,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88799ae73/161bc3c6872d4af782e1541ebc71e44c [2022-02-21 03:24:47,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-21 03:24:47,554 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-21 03:24:47,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-21 03:24:47,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-21 03:24:47,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-21 03:24:47,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:24:47" (1/1) ... [2022-02-21 03:24:47,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@224b83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:47, skipping insertion in model container [2022-02-21 03:24:47,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:24:47" (1/1) ... [2022-02-21 03:24:47,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-21 03:24:47,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-21 03:24:47,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 03:24:47,770 INFO L203 MainTranslator]: Completed pre-run [2022-02-21 03:24:47,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 03:24:47,799 INFO L208 MainTranslator]: Completed translation [2022-02-21 03:24:47,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:47 WrapperNode [2022-02-21 03:24:47,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-21 03:24:47,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-21 03:24:47,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-21 03:24:47,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-21 03:24:47,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:47" (1/1) ... [2022-02-21 03:24:47,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:47" (1/1) ... [2022-02-21 03:24:47,826 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 15 [2022-02-21 03:24:47,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-21 03:24:47,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-21 03:24:47,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-21 03:24:47,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-21 03:24:47,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:47" (1/1) ... [2022-02-21 03:24:47,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:47" (1/1) ... [2022-02-21 03:24:47,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:47" (1/1) ... [2022-02-21 03:24:47,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:47" (1/1) ... [2022-02-21 03:24:47,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:47" (1/1) ... [2022-02-21 03:24:47,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:47" (1/1) ... [2022-02-21 03:24:47,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:47" (1/1) ... [2022-02-21 03:24:47,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-21 03:24:47,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-21 03:24:47,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-21 03:24:47,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-21 03:24:47,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:47" (1/1) ... [2022-02-21 03:24:47,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:24:47,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:24:47,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-02-21 03:24:47,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-02-21 03:24:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-21 03:24:47,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-21 03:24:47,963 INFO L234 CfgBuilder]: Building ICFG [2022-02-21 03:24:47,964 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-21 03:24:48,031 INFO L275 CfgBuilder]: Performing block encoding [2022-02-21 03:24:48,036 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-21 03:24:48,037 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-21 03:24:48,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:24:48 BoogieIcfgContainer [2022-02-21 03:24:48,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-21 03:24:48,039 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-02-21 03:24:48,039 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-02-21 03:24:48,042 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-02-21 03:24:48,042 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 03:24:48,042 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.02 03:24:47" (1/3) ... [2022-02-21 03:24:48,043 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@449ebb25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.02 03:24:48, skipping insertion in model container [2022-02-21 03:24:48,043 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 03:24:48,044 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:47" (2/3) ... [2022-02-21 03:24:48,044 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@449ebb25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.02 03:24:48, skipping insertion in model container [2022-02-21 03:24:48,044 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 03:24:48,044 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:24:48" (3/3) ... [2022-02-21 03:24:48,045 INFO L388 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Introduction.c [2022-02-21 03:24:48,077 INFO L359 BuchiCegarLoop]: Interprodecural is true [2022-02-21 03:24:48,077 INFO L360 BuchiCegarLoop]: Hoare is false [2022-02-21 03:24:48,077 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-02-21 03:24:48,077 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-02-21 03:24:48,077 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-02-21 03:24:48,077 INFO L364 BuchiCegarLoop]: Difference is false [2022-02-21 03:24:48,078 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-02-21 03:24:48,078 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2022-02-21 03:24:48,088 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2022-02-21 03:24:48,100 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-02-21 03:24:48,100 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 03:24:48,100 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 03:24:48,104 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2022-02-21 03:24:48,104 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2022-02-21 03:24:48,104 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2022-02-21 03:24:48,104 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2022-02-21 03:24:48,105 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-02-21 03:24:48,105 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 03:24:48,105 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 03:24:48,106 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2022-02-21 03:24:48,106 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2022-02-21 03:24:48,110 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~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 := 1; 6#L18-2true [2022-02-21 03:24:48,110 INFO L793 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(main_~x~0#1 > 0);main_~x~0#1 := main_~x~0#1 - main_~y~0#1;main_~y~0#1 := 1 + main_~y~0#1; 6#L18-2true [2022-02-21 03:24:48,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:24:48,114 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-02-21 03:24:48,122 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:24:48,122 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153425318] [2022-02-21 03:24:48,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:24:48,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:24:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:24:48,187 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:24:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:24:48,200 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:24:48,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:24:48,203 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2022-02-21 03:24:48,203 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:24:48,203 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538897724] [2022-02-21 03:24:48,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:24:48,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:24:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:24:48,214 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:24:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:24:48,220 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:24:48,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:24:48,221 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-02-21 03:24:48,222 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:24:48,222 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699472459] [2022-02-21 03:24:48,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:24:48,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:24:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:24:48,241 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:24:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:24:48,246 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:24:48,341 INFO L210 LassoAnalysis]: Preferences: [2022-02-21 03:24:48,342 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-02-21 03:24:48,342 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-02-21 03:24:48,342 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-02-21 03:24:48,342 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-02-21 03:24:48,342 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:24:48,342 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-02-21 03:24:48,343 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-02-21 03:24:48,343 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Introduction.c_Iteration1_Loop [2022-02-21 03:24:48,343 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-02-21 03:24:48,343 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-02-21 03:24:48,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-02-21 03:24:48,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-02-21 03:24:48,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-02-21 03:24:48,546 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-02-21 03:24:48,546 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-02-21 03:24:48,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:24:48,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:24:48,556 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-02-21 03:24:48,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-02-21 03:24:48,564 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-02-21 03:24:48,564 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-02-21 03:24:48,587 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-02-21 03:24:48,587 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-02-21 03:24:48,605 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 [2022-02-21 03:24:48,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:24:48,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:24:48,609 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-02-21 03:24:48,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-02-21 03:24:48,614 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-02-21 03:24:48,615 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-02-21 03:24:48,629 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-02-21 03:24:48,629 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-02-21 03:24:48,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-02-21 03:24:48,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:24:48,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:24:48,656 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-02-21 03:24:48,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-02-21 03:24:48,660 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-02-21 03:24:48,661 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-02-21 03:24:48,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-02-21 03:24:48,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:24:48,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:24:48,700 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-02-21 03:24:48,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-02-21 03:24:48,703 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-02-21 03:24:48,704 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-02-21 03:24:48,869 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-02-21 03:24:48,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-02-21 03:24:48,884 INFO L210 LassoAnalysis]: Preferences: [2022-02-21 03:24:48,884 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-02-21 03:24:48,884 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-02-21 03:24:48,884 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-02-21 03:24:48,884 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-02-21 03:24:48,885 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:24:48,885 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-02-21 03:24:48,885 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-02-21 03:24:48,885 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Introduction.c_Iteration1_Loop [2022-02-21 03:24:48,885 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-02-21 03:24:48,885 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-02-21 03:24:48,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-02-21 03:24:48,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-02-21 03:24:48,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-02-21 03:24:49,007 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-02-21 03:24:49,011 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-02-21 03:24:49,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:24:49,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:24:49,021 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-02-21 03:24:49,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-02-21 03:24:49,031 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-02-21 03:24:49,038 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-02-21 03:24:49,038 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-02-21 03:24:49,038 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-02-21 03:24:49,039 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-02-21 03:24:49,042 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-02-21 03:24:49,042 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-02-21 03:24:49,058 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-02-21 03:24:49,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-02-21 03:24:49,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:24:49,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:24:49,078 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-02-21 03:24:49,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-02-21 03:24:49,092 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-02-21 03:24:49,100 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-02-21 03:24:49,100 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-02-21 03:24:49,100 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-02-21 03:24:49,100 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-02-21 03:24:49,105 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-02-21 03:24:49,105 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-02-21 03:24:49,120 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-02-21 03:24:49,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-02-21 03:24:49,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:24:49,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:24:49,155 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-02-21 03:24:49,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-02-21 03:24:49,157 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-02-21 03:24:49,165 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-02-21 03:24:49,166 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-02-21 03:24:49,166 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-02-21 03:24:49,166 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-02-21 03:24:49,166 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-02-21 03:24:49,168 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-02-21 03:24:49,168 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-02-21 03:24:49,195 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-02-21 03:24:49,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-02-21 03:24:49,238 INFO L490 LassoAnalysis]: Using template '2-nested'. [2022-02-21 03:24:49,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:24:49,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:24:49,241 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-02-21 03:24:49,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-02-21 03:24:49,244 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-02-21 03:24:49,252 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-02-21 03:24:49,253 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-02-21 03:24:49,253 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-02-21 03:24:49,253 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-02-21 03:24:49,263 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2022-02-21 03:24:49,263 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2022-02-21 03:24:49,291 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-02-21 03:24:49,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-02-21 03:24:49,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:24:49,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:24:49,317 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-02-21 03:24:49,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-02-21 03:24:49,319 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-02-21 03:24:49,328 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-02-21 03:24:49,328 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-02-21 03:24:49,328 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-02-21 03:24:49,329 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-02-21 03:24:49,333 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2022-02-21 03:24:49,333 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2022-02-21 03:24:49,355 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-02-21 03:24:49,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-02-21 03:24:49,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:24:49,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:24:49,392 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-02-21 03:24:49,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-02-21 03:24:49,396 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-02-21 03:24:49,408 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-02-21 03:24:49,409 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-02-21 03:24:49,409 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-02-21 03:24:49,409 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-02-21 03:24:49,409 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-02-21 03:24:49,411 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-02-21 03:24:49,411 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-02-21 03:24:49,414 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-02-21 03:24:49,418 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-02-21 03:24:49,418 INFO L444 ModelExtractionUtils]: 3 out of 7 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-02-21 03:24:49,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:24:49,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:24:49,421 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-02-21 03:24:49,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-02-21 03:24:49,452 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-02-21 03:24:49,452 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-02-21 03:24:49,452 INFO L513 LassoAnalysis]: Proved termination. [2022-02-21 03:24:49,452 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = -2*ULTIMATE.start_main_~y~0#1 + 1 f1 = 2*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-02-21 03:24:49,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2022-02-21 03:24:49,522 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-02-21 03:24:49,539 INFO L390 LassoCheck]: Loop: "assume !!(main_~x~0#1 > 0);main_~x~0#1 := main_~x~0#1 - main_~y~0#1;main_~y~0#1 := 1 + main_~y~0#1;" [2022-02-21 03:24:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 03:24:49,595 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2022-02-21 03:24:49,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:24:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 03:24:49,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-02-21 03:24:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 03:24:49,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-21 03:24:49,651 INFO L290 TraceCheckUtils]: 0: Hoare triple {17#unseeded} assume { :begin_inline_ULTIMATE.init } true; {17#unseeded} is VALID [2022-02-21 03:24:49,652 INFO L290 TraceCheckUtils]: 1: Hoare triple {17#unseeded} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#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 := 1; {17#unseeded} is VALID [2022-02-21 03:24:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 03:24:49,658 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-21 03:24:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 03:24:49,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-21 03:24:49,664 INFO L290 TraceCheckUtils]: 0: Hoare triple {22#(and (>= oldRank1 (ite (> (+ (* (- 2) |ULTIMATE.start_main_~y~0#1|) 1) 0) (+ (* (- 2) |ULTIMATE.start_main_~y~0#1|) 1) (* 2 |ULTIMATE.start_main_~x~0#1|))) (>= oldRank0 (ite (> (+ (* (- 2) |ULTIMATE.start_main_~y~0#1|) 1) 0) 1 0)))} assume !!(main_~x~0#1 > 0);main_~x~0#1 := main_~x~0#1 - main_~y~0#1;main_~y~0#1 := 1 + main_~y~0#1; {31#(or unseeded (and (>= oldRank0 0) (> oldRank0 (ite (> (+ (* (- 2) |ULTIMATE.start_main_~y~0#1|) 1) 0) 1 0))) (and (> oldRank1 (ite (> (+ (* (- 2) |ULTIMATE.start_main_~y~0#1|) 1) 0) (+ (* (- 2) |ULTIMATE.start_main_~y~0#1|) 1) (* 2 |ULTIMATE.start_main_~x~0#1|))) (>= oldRank0 (ite (> (+ (* (- 2) |ULTIMATE.start_main_~y~0#1|) 1) 0) 1 0)) (>= oldRank1 0)))} is VALID [2022-02-21 03:24:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-21 03:24:49,687 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:24:49,693 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 3 edges. 3 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 03:24:49,695 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Stem has 2 letters. Loop has 1 letters. [2022-02-21 03:24:49,697 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,702 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-02-21 03:24:49,703 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:24:49,754 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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). Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 19 transitions. Complement of second has 5 states. [2022-02-21 03:24:49,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-02-21 03:24:49,756 INFO L123 tractBuchiDifference]: Start testing correctness of buchiDifferenceNCSBLazy3 [2022-02-21 03:24:49,756 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2022-02-21 03:24:49,757 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-02-21 03:24:49,757 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 03:24:49,757 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 03:24:49,762 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:24:49,768 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2022-02-21 03:24:49,768 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 03:24:49,768 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 03:24:49,769 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 19 transitions. [2022-02-21 03:24:49,770 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-02-21 03:24:49,770 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-02-21 03:24:49,771 INFO L70 LassoExtractor]: Start lassoExtractor. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2022-02-21 03:24:49,773 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-02-21 03:24:49,774 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 1 examples of accepted words. [2022-02-21 03:24:49,774 INFO L70 LassoExtractor]: Start lassoExtractor. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:24:49,777 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2022-02-21 03:24:49,777 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 2 examples of accepted words. [2022-02-21 03:24:49,777 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 16 states and 19 transitions. cyclomatic complexity: 4 [2022-02-21 03:24:49,778 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 19 transitions. cyclomatic complexity: 4 [2022-02-21 03:24:49,778 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-02-21 03:24:49,778 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 0 examples of accepted words. [2022-02-21 03:24:49,778 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) Stem has 2 letters. Loop has 1 letters. [2022-02-21 03:24:49,779 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,779 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Stem has 2 letters. Loop has 1 letters. [2022-02-21 03:24:49,779 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,779 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 19 transitions. cyclomatic complexity: 4 Stem has 2 letters. Loop has 1 letters. [2022-02-21 03:24:49,779 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,780 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) Stem has 1 letters. Loop has 1 letters. [2022-02-21 03:24:49,780 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,780 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Stem has 1 letters. Loop has 1 letters. [2022-02-21 03:24:49,780 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,781 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 19 transitions. cyclomatic complexity: 4 Stem has 1 letters. Loop has 1 letters. [2022-02-21 03:24:49,781 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,781 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) Stem has 16 letters. Loop has 16 letters. [2022-02-21 03:24:49,781 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,781 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Stem has 16 letters. Loop has 16 letters. [2022-02-21 03:24:49,781 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,782 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 19 transitions. cyclomatic complexity: 4 Stem has 16 letters. Loop has 16 letters. [2022-02-21 03:24:49,782 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,782 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) Stem has 7 letters. Loop has 7 letters. [2022-02-21 03:24:49,782 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,782 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Stem has 7 letters. Loop has 7 letters. [2022-02-21 03:24:49,782 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,782 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 19 transitions. cyclomatic complexity: 4 Stem has 7 letters. Loop has 7 letters. [2022-02-21 03:24:49,783 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,783 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) Stem has 4 letters. Loop has 4 letters. [2022-02-21 03:24:49,783 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Stem has 4 letters. Loop has 4 letters. [2022-02-21 03:24:49,784 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 19 transitions. cyclomatic complexity: 4 Stem has 4 letters. Loop has 4 letters. [2022-02-21 03:24:49,784 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) Stem has 2 letters. Loop has 1 letters. [2022-02-21 03:24:49,784 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Stem has 2 letters. Loop has 1 letters. [2022-02-21 03:24:49,785 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 19 transitions. cyclomatic complexity: 4 Stem has 2 letters. Loop has 1 letters. [2022-02-21 03:24:49,785 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) Stem has 2 letters. Loop has 1 letters. [2022-02-21 03:24:49,785 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Stem has 2 letters. Loop has 1 letters. [2022-02-21 03:24:49,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 19 transitions. cyclomatic complexity: 4 Stem has 2 letters. Loop has 1 letters. [2022-02-21 03:24:49,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) Stem has 1 letters. Loop has 1 letters. [2022-02-21 03:24:49,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Stem has 1 letters. Loop has 1 letters. [2022-02-21 03:24:49,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 19 transitions. cyclomatic complexity: 4 Stem has 1 letters. Loop has 1 letters. [2022-02-21 03:24:49,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,787 INFO L161 tractBuchiDifference]: Finished testing correctness of buchiDifferenceNCSBLazy3 [2022-02-21 03:24:49,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:24:49,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2022-02-21 03:24:49,791 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 1 letters. [2022-02-21 03:24:49,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,791 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 1 letters. [2022-02-21 03:24:49,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,791 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 2 letters. [2022-02-21 03:24:49,792 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:24:49,792 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 19 transitions. cyclomatic complexity: 4 [2022-02-21 03:24:49,793 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-02-21 03:24:49,795 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2022-02-21 03:24:49,796 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-02-21 03:24:49,796 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-02-21 03:24:49,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-02-21 03:24:49,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-02-21 03:24:49,796 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-21 03:24:49,796 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-21 03:24:49,796 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-21 03:24:49,797 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2022-02-21 03:24:49,797 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-02-21 03:24:49,797 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-02-21 03:24:49,797 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-02-21 03:24:49,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.02 03:24:49 BoogieIcfgContainer [2022-02-21 03:24:49,801 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-02-21 03:24:49,802 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-21 03:24:49,802 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-21 03:24:49,802 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-21 03:24:49,803 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:24:48" (3/4) ... [2022-02-21 03:24:49,805 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-02-21 03:24:49,805 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-21 03:24:49,806 INFO L158 Benchmark]: Toolchain (without parser) took 2251.91ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 92.3MB in the beginning and 119.0MB in the end (delta: -26.7MB). Peak memory consumption was 129.7kB. Max. memory is 16.1GB. [2022-02-21 03:24:49,806 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 127.9MB. Free memory was 100.6MB in the beginning and 100.5MB in the end (delta: 23.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:24:49,807 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.88ms. Allocated memory is still 127.9MB. Free memory was 92.0MB in the beginning and 103.2MB in the end (delta: -11.2MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2022-02-21 03:24:49,807 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.23ms. Allocated memory is still 127.9MB. Free memory was 103.2MB in the beginning and 101.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:24:49,807 INFO L158 Benchmark]: Boogie Preprocessor took 15.55ms. Allocated memory is still 127.9MB. Free memory was 101.8MB in the beginning and 101.1MB in the end (delta: 761.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-21 03:24:49,808 INFO L158 Benchmark]: RCFGBuilder took 194.55ms. Allocated memory is still 127.9MB. Free memory was 101.1MB in the beginning and 92.0MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-21 03:24:49,808 INFO L158 Benchmark]: BuchiAutomizer took 1762.58ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 92.0MB in the beginning and 119.0MB in the end (delta: -27.0MB). Peak memory consumption was 671.1kB. Max. memory is 16.1GB. [2022-02-21 03:24:49,808 INFO L158 Benchmark]: Witness Printer took 2.87ms. Allocated memory is still 155.2MB. Free memory is still 119.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:24:49,810 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 127.9MB. Free memory was 100.6MB in the beginning and 100.5MB in the end (delta: 23.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 245.88ms. Allocated memory is still 127.9MB. Free memory was 92.0MB in the beginning and 103.2MB in the end (delta: -11.2MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.23ms. Allocated memory is still 127.9MB. Free memory was 103.2MB in the beginning and 101.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.55ms. Allocated memory is still 127.9MB. Free memory was 101.8MB in the beginning and 101.1MB in the end (delta: 761.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 194.55ms. Allocated memory is still 127.9MB. Free memory was 101.1MB in the beginning and 92.0MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1762.58ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 92.0MB in the beginning and 119.0MB in the end (delta: -27.0MB). Peak memory consumption was 671.1kB. Max. memory is 16.1GB. * Witness Printer took 2.87ms. Allocated memory is still 155.2MB. Free memory is still 119.0MB. 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 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has 2-nested ranking function (if -2 * y + 1 > 0 then 1 else 0), (if -2 * y + 1 > 0 then -2 * y + 1 else 2 * x) and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 5 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax170 hnf100 lsp58 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq182 hnf93 smp100 dnf100 smp100 tf106 neg100 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 52ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-02-21 03:24:49,849 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