./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/Ackermann-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ff03de63 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/Ackermann-2.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 24c3da6ed2fa1f6675634198ae6fe88b58d89aeeff26fce5568b93d74b6b0249 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 21:54:25,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 21:54:25,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 21:54:25,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 21:54:25,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 21:54:25,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 21:54:25,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 21:54:25,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 21:54:25,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 21:54:25,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 21:54:25,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 21:54:25,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 21:54:25,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 21:54:25,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 21:54:25,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 21:54:25,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 21:54:25,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 21:54:25,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 21:54:25,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 21:54:25,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 21:54:25,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 21:54:25,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 21:54:25,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 21:54:25,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 21:54:25,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 21:54:25,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 21:54:25,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 21:54:25,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 21:54:25,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 21:54:25,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 21:54:25,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 21:54:25,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 21:54:25,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 21:54:25,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 21:54:25,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 21:54:25,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 21:54:25,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 21:54:25,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 21:54:25,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 21:54:25,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 21:54:25,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 21:54:25,719 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-21 21:54:25,745 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 21:54:25,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 21:54:25,746 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 21:54:25,746 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 21:54:25,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 21:54:25,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 21:54:25,747 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 21:54:25,747 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-21 21:54:25,747 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-21 21:54:25,748 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-21 21:54:25,748 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-21 21:54:25,748 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-21 21:54:25,749 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-21 21:54:25,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 21:54:25,749 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 21:54:25,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 21:54:25,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 21:54:25,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-21 21:54:25,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-21 21:54:25,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-21 21:54:25,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 21:54:25,750 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-21 21:54:25,750 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 21:54:25,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-21 21:54:25,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 21:54:25,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 21:54:25,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 21:54:25,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 21:54:25,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 21:54:25,756 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-21 21:54:25,756 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24c3da6ed2fa1f6675634198ae6fe88b58d89aeeff26fce5568b93d74b6b0249 [2021-12-21 21:54:25,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 21:54:25,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 21:54:25,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 21:54:25,966 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 21:54:25,966 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 21:54:25,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Ackermann-2.c [2021-12-21 21:54:26,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf5e4ca07/d132372111494795b5fa0093445225d7/FLAG91e6d7f20 [2021-12-21 21:54:26,378 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 21:54:26,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Ackermann-2.c [2021-12-21 21:54:26,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf5e4ca07/d132372111494795b5fa0093445225d7/FLAG91e6d7f20 [2021-12-21 21:54:26,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf5e4ca07/d132372111494795b5fa0093445225d7 [2021-12-21 21:54:26,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 21:54:26,402 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 21:54:26,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 21:54:26,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 21:54:26,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 21:54:26,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:54:26" (1/1) ... [2021-12-21 21:54:26,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@740b7794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:54:26, skipping insertion in model container [2021-12-21 21:54:26,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:54:26" (1/1) ... [2021-12-21 21:54:26,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 21:54:26,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 21:54:26,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 21:54:26,543 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 21:54:26,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 21:54:26,561 INFO L208 MainTranslator]: Completed translation [2021-12-21 21:54:26,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:54:26 WrapperNode [2021-12-21 21:54:26,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 21:54:26,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 21:54:26,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 21:54:26,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 21:54:26,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:54:26" (1/1) ... [2021-12-21 21:54:26,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:54:26" (1/1) ... [2021-12-21 21:54:26,586 INFO L137 Inliner]: procedures = 5, calls = 6, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2021-12-21 21:54:26,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 21:54:26,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 21:54:26,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 21:54:26,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 21:54:26,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:54:26" (1/1) ... [2021-12-21 21:54:26,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:54:26" (1/1) ... [2021-12-21 21:54:26,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:54:26" (1/1) ... [2021-12-21 21:54:26,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:54:26" (1/1) ... [2021-12-21 21:54:26,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:54:26" (1/1) ... [2021-12-21 21:54:26,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:54:26" (1/1) ... [2021-12-21 21:54:26,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:54:26" (1/1) ... [2021-12-21 21:54:26,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 21:54:26,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 21:54:26,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 21:54:26,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 21:54:26,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:54:26" (1/1) ... [2021-12-21 21:54:26,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:26,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:26,625 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) [2021-12-21 21:54:26,643 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 [2021-12-21 21:54:26,653 INFO L130 BoogieDeclarations]: Found specification of procedure Ack [2021-12-21 21:54:26,654 INFO L138 BoogieDeclarations]: Found implementation of procedure Ack [2021-12-21 21:54:26,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 21:54:26,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 21:54:26,690 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 21:54:26,692 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 21:54:26,793 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 21:54:26,800 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 21:54:26,800 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 21:54:26,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:54:26 BoogieIcfgContainer [2021-12-21 21:54:26,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 21:54:26,802 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-21 21:54:26,802 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-21 21:54:26,805 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-21 21:54:26,805 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:54:26,805 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.12 09:54:26" (1/3) ... [2021-12-21 21:54:26,806 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d82f613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 09:54:26, skipping insertion in model container [2021-12-21 21:54:26,806 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:54:26,806 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:54:26" (2/3) ... [2021-12-21 21:54:26,807 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d82f613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 09:54:26, skipping insertion in model container [2021-12-21 21:54:26,807 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:54:26,807 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:54:26" (3/3) ... [2021-12-21 21:54:26,809 INFO L388 chiAutomizerObserver]: Analyzing ICFG Ackermann-2.c [2021-12-21 21:54:26,873 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-21 21:54:26,886 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-21 21:54:26,886 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-21 21:54:26,886 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-21 21:54:26,887 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-21 21:54:26,887 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-21 21:54:26,887 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-21 21:54:26,887 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-21 21:54:26,896 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 21:54:26,909 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-21 21:54:26,911 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:54:26,922 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:54:26,927 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-21 21:54:26,927 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-21 21:54:26,927 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-21 21:54:26,927 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 21:54:26,931 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-21 21:54:26,931 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:54:26,931 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:54:26,932 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-21 21:54:26,932 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-21 21:54:26,937 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1, main_~y~0#1, main_~r~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 18#L19true assume !!(main_~x~0#1 <= 28); 19#L20true assume !!(main_~y~0#1 <= 3); 15#L21true assume !(main_~x~0#1 < 0 || main_~y~0#1 < 0); 20#L24true call main_#t~ret5#1 := Ack(main_~x~0#1, main_~y~0#1);< 12#AckENTRYtrue [2021-12-21 21:54:26,937 INFO L793 eck$LassoCheckResult]: Loop: 12#AckENTRYtrue ~m := #in~m;~n := #in~n; 9#L10true assume !(0 == ~m); 10#L11true assume 0 == ~n; 17#L11-1true call #t~ret0 := Ack(~m - 1, 1);< 12#AckENTRYtrue [2021-12-21 21:54:26,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:54:26,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1333323188, now seen corresponding path program 1 times [2021-12-21 21:54:26,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:54:26,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396120084] [2021-12-21 21:54:26,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:54:26,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:54:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:54:27,011 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:54:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:54:27,031 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:54:27,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:54:27,033 INFO L85 PathProgramCache]: Analyzing trace with hash 927620, now seen corresponding path program 1 times [2021-12-21 21:54:27,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:54:27,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266143638] [2021-12-21 21:54:27,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:54:27,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:54:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:54:27,050 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:54:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:54:27,063 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:54:27,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:54:27,064 INFO L85 PathProgramCache]: Analyzing trace with hash 2020015031, now seen corresponding path program 1 times [2021-12-21 21:54:27,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:54:27,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163968459] [2021-12-21 21:54:27,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:54:27,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:54:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:54:27,075 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:54:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:54:27,084 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:54:27,211 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:54:27,211 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:54:27,211 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:54:27,211 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:54:27,212 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 21:54:27,212 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:27,212 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:54:27,212 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:54:27,212 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration1_Loop [2021-12-21 21:54:27,212 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:54:27,213 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:54:27,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:27,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:27,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:27,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:27,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:27,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:27,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:27,248 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:27,331 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:54:27,332 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 21:54:27,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:27,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:27,344 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) [2021-12-21 21:54:27,345 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 [2021-12-21 21:54:27,347 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:27,347 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:27,368 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:27,368 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:27,387 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 [2021-12-21 21:54:27,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:27,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:27,389 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) [2021-12-21 21:54:27,390 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 [2021-12-21 21:54:27,392 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:27,392 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:27,431 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 [2021-12-21 21:54:27,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:27,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:27,433 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) [2021-12-21 21:54:27,434 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 [2021-12-21 21:54:27,436 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 21:54:27,436 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:27,487 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:27,487 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#in~m=-2} Honda state: {Ack_#in~m=-2} Generalized eigenvectors: [{Ack_#in~m=0}, {Ack_#in~m=0}, {Ack_#in~m=-1}] Lambdas: [15, 9, 1] Nus: [0, 0] [2021-12-21 21:54:27,507 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 [2021-12-21 21:54:27,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:27,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:27,509 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) [2021-12-21 21:54:27,511 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 [2021-12-21 21:54:27,512 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:27,512 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:27,533 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:27,534 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~m=0} Honda state: {Ack_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:27,553 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 [2021-12-21 21:54:27,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:27,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:27,555 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) [2021-12-21 21:54:27,558 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 [2021-12-21 21:54:27,561 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:27,561 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:27,579 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:27,579 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret2=0} Honda state: {Ack_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:27,598 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 [2021-12-21 21:54:27,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:27,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:27,600 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) [2021-12-21 21:54:27,601 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 [2021-12-21 21:54:27,603 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:27,603 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:27,624 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:27,624 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~n=0} Honda state: {Ack_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:27,643 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 [2021-12-21 21:54:27,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:27,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:27,645 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) [2021-12-21 21:54:27,646 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 [2021-12-21 21:54:27,671 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:27,671 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:27,692 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:27,693 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret1=0} Honda state: {Ack_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:27,730 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 [2021-12-21 21:54:27,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:27,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:27,731 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) [2021-12-21 21:54:27,732 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 [2021-12-21 21:54:27,733 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:27,733 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:27,744 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:27,744 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret0=0} Honda state: {Ack_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:27,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-12-21 21:54:27,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:27,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:27,762 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) [2021-12-21 21:54:27,763 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 [2021-12-21 21:54:27,776 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:27,776 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:27,803 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 [2021-12-21 21:54:27,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:27,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:27,815 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) [2021-12-21 21:54:27,821 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 [2021-12-21 21:54:27,821 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 21:54:27,822 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:27,847 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 21:54:27,864 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 [2021-12-21 21:54:27,864 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:54:27,864 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:54:27,864 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:54:27,865 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:54:27,865 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 21:54:27,865 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:27,865 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:54:27,865 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:54:27,865 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration1_Loop [2021-12-21 21:54:27,865 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:54:27,865 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:54:27,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:27,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:27,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:27,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:27,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:27,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:27,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:27,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:27,965 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:54:27,968 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 21:54:27,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:27,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:27,970 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) [2021-12-21 21:54:27,971 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 [2021-12-21 21:54:27,973 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 [2021-12-21 21:54:27,980 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:54:27,980 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:54:27,981 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:54:27,981 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:54:27,981 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:54:27,982 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:54:27,982 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:54:27,997 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:54:28,012 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 [2021-12-21 21:54:28,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:28,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:28,013 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) [2021-12-21 21:54:28,014 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 [2021-12-21 21:54:28,016 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 [2021-12-21 21:54:28,022 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:54:28,022 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:54:28,022 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:54:28,023 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:54:28,023 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:54:28,023 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:54:28,023 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:54:28,034 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:54:28,050 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 [2021-12-21 21:54:28,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:28,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:28,051 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) [2021-12-21 21:54:28,051 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 [2021-12-21 21:54:28,053 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 [2021-12-21 21:54:28,059 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:54:28,059 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:54:28,059 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:54:28,059 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-21 21:54:28,059 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:54:28,060 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-21 21:54:28,060 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:54:28,076 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:54:28,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-12-21 21:54:28,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:28,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:28,094 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) [2021-12-21 21:54:28,094 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 [2021-12-21 21:54:28,099 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 [2021-12-21 21:54:28,107 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:54:28,108 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:54:28,108 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:54:28,108 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:54:28,108 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:54:28,109 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:54:28,109 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:54:28,117 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:54:28,133 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 [2021-12-21 21:54:28,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:28,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:28,135 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) [2021-12-21 21:54:28,139 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 [2021-12-21 21:54:28,140 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 [2021-12-21 21:54:28,147 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:54:28,147 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:54:28,147 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:54:28,147 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:54:28,147 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:54:28,148 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:54:28,148 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:54:28,149 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:54:28,165 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 [2021-12-21 21:54:28,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:28,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:28,167 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) [2021-12-21 21:54:28,167 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 [2021-12-21 21:54:28,168 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 [2021-12-21 21:54:28,175 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:54:28,175 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:54:28,176 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:54:28,176 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:54:28,176 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:54:28,177 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:54:28,177 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:54:28,178 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:54:28,195 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 [2021-12-21 21:54:28,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:28,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:28,197 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) [2021-12-21 21:54:28,197 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 [2021-12-21 21:54:28,198 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 [2021-12-21 21:54:28,206 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:54:28,207 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:54:28,207 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:54:28,207 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:54:28,207 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:54:28,207 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:54:28,207 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:54:28,217 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:54:28,233 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 [2021-12-21 21:54:28,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:28,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:28,235 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) [2021-12-21 21:54:28,235 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 [2021-12-21 21:54:28,237 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 [2021-12-21 21:54:28,244 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:54:28,244 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:54:28,244 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:54:28,244 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:54:28,244 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:54:28,245 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:54:28,245 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:54:28,254 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 21:54:28,256 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-21 21:54:28,256 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-21 21:54:28,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:28,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:28,258 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) [2021-12-21 21:54:28,261 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 [2021-12-21 21:54:28,262 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 21:54:28,262 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 21:54:28,262 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 21:54:28,263 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(Ack_#in~n) = -2*Ack_#in~n + 1 Supporting invariants [] [2021-12-21 21:54:28,282 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 [2021-12-21 21:54:28,285 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 21:54:28,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:54:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:54:28,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 21:54:28,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:54:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:54:28,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 21:54:28,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:54:28,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:54:28,396 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-21 21:54:28,397 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:54:28,489 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 [2021-12-21 21:54:28,541 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4). Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 49 states and 64 transitions. Complement of second has 12 states. [2021-12-21 21:54:28,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-21 21:54:28,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:54:28,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-12-21 21:54:28,548 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 6 letters. Loop has 4 letters. [2021-12-21 21:54:28,549 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:54:28,550 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 4 letters. [2021-12-21 21:54:28,550 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:54:28,550 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 6 letters. Loop has 8 letters. [2021-12-21 21:54:28,550 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:54:28,551 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 64 transitions. [2021-12-21 21:54:28,557 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-21 21:54:28,562 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 30 states and 38 transitions. [2021-12-21 21:54:28,563 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2021-12-21 21:54:28,563 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-12-21 21:54:28,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 38 transitions. [2021-12-21 21:54:28,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 21:54:28,565 INFO L681 BuchiCegarLoop]: Abstraction has 30 states and 38 transitions. [2021-12-21 21:54:28,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 38 transitions. [2021-12-21 21:54:28,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 23. [2021-12-21 21:54:28,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-21 21:54:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2021-12-21 21:54:28,586 INFO L704 BuchiCegarLoop]: Abstraction has 23 states and 29 transitions. [2021-12-21 21:54:28,586 INFO L587 BuchiCegarLoop]: Abstraction has 23 states and 29 transitions. [2021-12-21 21:54:28,586 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-21 21:54:28,586 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 29 transitions. [2021-12-21 21:54:28,588 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-21 21:54:28,588 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:54:28,588 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:54:28,589 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 21:54:28,589 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-21 21:54:28,589 INFO L791 eck$LassoCheckResult]: Stem: 134#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 135#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1, main_~y~0#1, main_~r~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 142#L19 assume !!(main_~x~0#1 <= 28); 154#L20 assume !!(main_~y~0#1 <= 3); 153#L21 assume !(main_~x~0#1 < 0 || main_~y~0#1 < 0); 140#L24 call main_#t~ret5#1 := Ack(main_~x~0#1, main_~y~0#1);< 147#AckENTRY ~m := #in~m;~n := #in~n; 143#L10 assume !(0 == ~m); 144#L11 assume !(0 == ~n); 138#L12 [2021-12-21 21:54:28,590 INFO L793 eck$LassoCheckResult]: Loop: 138#L12 call #t~ret1 := Ack(~m, ~n - 1);< 141#AckENTRY ~m := #in~m;~n := #in~n; 155#L10 assume !(0 == ~m); 156#L11 assume !(0 == ~n); 138#L12 [2021-12-21 21:54:28,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:54:28,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1173540434, now seen corresponding path program 1 times [2021-12-21 21:54:28,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:54:28,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095687482] [2021-12-21 21:54:28,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:54:28,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:54:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:54:28,612 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:54:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:54:28,621 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:54:28,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:54:28,622 INFO L85 PathProgramCache]: Analyzing trace with hash 2115295, now seen corresponding path program 1 times [2021-12-21 21:54:28,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:54:28,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936392028] [2021-12-21 21:54:28,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:54:28,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:54:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:54:28,631 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:54:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:54:28,636 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:54:28,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:54:28,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1483834544, now seen corresponding path program 1 times [2021-12-21 21:54:28,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:54:28,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944957996] [2021-12-21 21:54:28,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:54:28,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:54:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:54:28,645 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:54:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:54:28,651 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:54:28,716 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:54:28,716 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:54:28,716 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:54:28,716 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:54:28,717 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 21:54:28,717 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:28,717 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:54:28,717 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:54:28,717 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration2_Loop [2021-12-21 21:54:28,717 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:54:28,717 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:54:28,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:28,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:28,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:28,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:28,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:28,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:28,788 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:54:28,788 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 21:54:28,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:28,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:28,789 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) [2021-12-21 21:54:28,795 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:28,795 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:28,804 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 [2021-12-21 21:54:28,813 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:28,813 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret1=0} Honda state: {Ack_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:28,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-12-21 21:54:28,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:28,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:28,843 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) [2021-12-21 21:54:28,844 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 [2021-12-21 21:54:28,845 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:28,845 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:28,866 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:28,866 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:28,883 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 [2021-12-21 21:54:28,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:28,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:28,884 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) [2021-12-21 21:54:28,885 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 [2021-12-21 21:54:28,886 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:28,887 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:28,907 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:28,908 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret0=0} Honda state: {Ack_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:28,925 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 [2021-12-21 21:54:28,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:28,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:28,926 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) [2021-12-21 21:54:28,928 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:28,928 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:28,937 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 [2021-12-21 21:54:28,943 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:28,943 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret2=0} Honda state: {Ack_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:28,959 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 [2021-12-21 21:54:28,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:28,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:28,960 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) [2021-12-21 21:54:28,961 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 [2021-12-21 21:54:28,962 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:28,962 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:29,002 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 [2021-12-21 21:54:29,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:29,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:29,004 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) [2021-12-21 21:54:29,004 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 [2021-12-21 21:54:29,007 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 21:54:29,007 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:29,156 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:29,157 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#in~n=0, Ack_~n=-7} Honda state: {Ack_#in~n=0, Ack_~n=-7} Generalized eigenvectors: [{Ack_#in~n=1, Ack_~n=0}, {Ack_#in~n=-8, Ack_~n=0}, {Ack_#in~n=-1, Ack_~n=-1}] Lambdas: [8, 0, 1] Nus: [1, 0] [2021-12-21 21:54:29,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-12-21 21:54:29,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:29,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:29,174 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) [2021-12-21 21:54:29,174 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 [2021-12-21 21:54:29,176 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:29,176 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:29,195 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:29,196 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~m=-3, Ack_#in~m=-3} Honda state: {Ack_~m=-3, Ack_#in~m=-3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:29,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-12-21 21:54:29,328 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:54:29,328 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:54:29,328 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:54:29,328 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:54:29,328 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 21:54:29,328 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:29,328 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:54:29,328 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:54:29,329 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration2_Lasso [2021-12-21 21:54:29,329 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:54:29,329 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:54:29,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:29,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:29,333 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:29,335 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:29,336 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:29,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:29,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:29,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:29,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:29,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:29,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:29,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:29,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:29,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:29,479 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:54:29,479 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 21:54:29,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:29,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:29,484 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) [2021-12-21 21:54:29,509 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:29,509 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:29,519 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 [2021-12-21 21:54:29,528 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:29,528 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret2=0} Honda state: {Ack_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:29,543 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 [2021-12-21 21:54:29,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:29,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:29,544 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) [2021-12-21 21:54:29,545 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 [2021-12-21 21:54:29,546 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:29,546 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:29,554 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:29,554 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:29,569 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 [2021-12-21 21:54:29,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:29,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:29,570 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) [2021-12-21 21:54:29,570 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 [2021-12-21 21:54:29,572 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:29,572 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:29,592 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:29,592 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:29,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-12-21 21:54:29,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:29,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:29,609 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) [2021-12-21 21:54:29,611 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 [2021-12-21 21:54:29,619 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:29,619 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:29,626 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:29,626 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~r~0#1=0} Honda state: {ULTIMATE.start_main_~r~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:29,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2021-12-21 21:54:29,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:29,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:29,642 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) [2021-12-21 21:54:29,643 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 [2021-12-21 21:54:29,644 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:29,644 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:29,661 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:29,661 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~m=0, Ack_#in~m=0} Honda state: {Ack_~m=3, Ack_#in~m=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:29,676 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 [2021-12-21 21:54:29,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:29,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:29,678 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) [2021-12-21 21:54:29,680 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 [2021-12-21 21:54:29,680 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:29,680 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:29,692 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:29,692 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4#1=0} Honda state: {ULTIMATE.start_main_#t~nondet4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:29,708 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 [2021-12-21 21:54:29,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:29,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:29,709 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) [2021-12-21 21:54:29,709 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 [2021-12-21 21:54:29,712 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:29,712 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:29,720 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:29,720 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret0=0} Honda state: {Ack_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:29,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-12-21 21:54:29,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:29,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:29,736 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) [2021-12-21 21:54:29,737 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 [2021-12-21 21:54:29,772 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:29,773 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:29,780 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:29,780 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret1=0} Honda state: {Ack_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:29,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-12-21 21:54:29,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:29,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:29,796 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) [2021-12-21 21:54:29,797 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 [2021-12-21 21:54:29,798 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:29,798 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:29,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-12-21 21:54:29,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:29,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:29,831 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) [2021-12-21 21:54:29,832 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 [2021-12-21 21:54:29,832 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 21:54:29,833 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:31,030 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 21:54:31,034 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 [2021-12-21 21:54:31,034 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:54:31,034 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:54:31,034 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:54:31,034 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:54:31,034 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 21:54:31,034 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:31,034 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:54:31,034 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:54:31,034 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration2_Lasso [2021-12-21 21:54:31,034 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:54:31,034 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:54:31,036 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:31,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:31,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:31,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:31,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:31,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:31,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:31,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:31,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:31,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:31,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:31,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:31,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:31,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:31,206 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:54:31,206 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 21:54:31,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:31,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:31,207 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) [2021-12-21 21:54:31,208 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 [2021-12-21 21:54:31,209 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 [2021-12-21 21:54:31,216 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:54:31,216 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:54:31,216 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:54:31,216 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:54:31,216 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:54:31,217 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:54:31,217 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:54:31,231 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:54:31,246 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 [2021-12-21 21:54:31,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:31,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:31,247 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) [2021-12-21 21:54:31,248 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 [2021-12-21 21:54:31,249 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 [2021-12-21 21:54:31,255 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:54:31,255 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:54:31,255 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-21 21:54:31,255 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:54:31,266 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-12-21 21:54:31,266 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-12-21 21:54:31,285 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:54:31,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2021-12-21 21:54:31,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:31,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:31,301 INFO L229 MonitoredProcess]: Starting monitored process 40 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) [2021-12-21 21:54:31,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-12-21 21:54:31,303 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 [2021-12-21 21:54:31,309 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:54:31,309 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:54:31,309 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:54:31,309 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:54:31,309 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:54:31,310 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:54:31,310 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:54:31,310 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:54:31,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-12-21 21:54:31,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:31,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:31,326 INFO L229 MonitoredProcess]: Starting monitored process 41 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) [2021-12-21 21:54:31,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-12-21 21:54:31,328 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 [2021-12-21 21:54:31,334 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:54:31,334 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:54:31,334 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:54:31,334 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:54:31,334 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:54:31,335 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:54:31,335 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:54:31,335 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:54:31,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-12-21 21:54:31,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:31,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:31,351 INFO L229 MonitoredProcess]: Starting monitored process 42 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) [2021-12-21 21:54:31,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-12-21 21:54:31,353 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 [2021-12-21 21:54:31,359 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:54:31,360 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:54:31,360 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:54:31,360 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:54:31,360 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:54:31,360 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:54:31,360 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:54:31,371 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:54:31,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-12-21 21:54:31,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:31,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:31,386 INFO L229 MonitoredProcess]: Starting monitored process 43 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) [2021-12-21 21:54:31,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-12-21 21:54:31,389 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 [2021-12-21 21:54:31,394 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:54:31,394 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:54:31,394 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:54:31,394 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:54:31,395 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:54:31,395 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:54:31,395 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:54:31,403 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:54:31,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-12-21 21:54:31,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:31,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:31,419 INFO L229 MonitoredProcess]: Starting monitored process 44 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) [2021-12-21 21:54:31,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-12-21 21:54:31,421 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 [2021-12-21 21:54:31,427 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:54:31,427 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:54:31,427 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:54:31,427 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:54:31,427 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:54:31,428 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:54:31,428 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:54:31,429 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:54:31,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-12-21 21:54:31,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:31,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:31,444 INFO L229 MonitoredProcess]: Starting monitored process 45 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) [2021-12-21 21:54:31,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-12-21 21:54:31,447 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 [2021-12-21 21:54:31,453 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:54:31,453 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:54:31,453 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-21 21:54:31,453 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:54:31,466 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-12-21 21:54:31,467 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-12-21 21:54:31,483 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 21:54:31,495 INFO L443 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2021-12-21 21:54:31,495 INFO L444 ModelExtractionUtils]: 6 out of 16 variables were initially zero. Simplification set additionally 6 variables to zero. [2021-12-21 21:54:31,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:31,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:31,508 INFO L229 MonitoredProcess]: Starting monitored process 46 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) [2021-12-21 21:54:31,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-12-21 21:54:31,510 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 21:54:31,532 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2021-12-21 21:54:31,532 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 21:54:31,532 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(Ack_~n) = 1*Ack_~n Supporting invariants [2*Ack_~n - 1 >= 0] [2021-12-21 21:54:31,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-12-21 21:54:31,550 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-12-21 21:54:31,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:54:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:54:31,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 21:54:31,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:54:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:54:31,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 21:54:31,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:54:31,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:54:31,668 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 3 loop predicates [2021-12-21 21:54:31,668 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 29 transitions. cyclomatic complexity: 8 Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:54:31,718 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 29 transitions. cyclomatic complexity: 8. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 46 transitions. Complement of second has 12 states. [2021-12-21 21:54:31,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 4 stem states 1 non-accepting loop states 2 accepting loop states [2021-12-21 21:54:31,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:54:31,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 13 transitions. [2021-12-21 21:54:31,719 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 13 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-21 21:54:31,720 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:54:31,720 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-21 21:54:31,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:54:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:54:31,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 21:54:31,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:54:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:54:31,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 21:54:31,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:54:31,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-12-21 21:54:31,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:54:31,883 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.4 stem predicates 3 loop predicates [2021-12-21 21:54:31,883 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 29 transitions. cyclomatic complexity: 8 Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:54:31,952 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 29 transitions. cyclomatic complexity: 8. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 49 states and 68 transitions. Complement of second has 20 states. [2021-12-21 21:54:31,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 4 stem states 3 non-accepting loop states 1 accepting loop states [2021-12-21 21:54:31,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:54:31,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 19 transitions. [2021-12-21 21:54:31,953 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-21 21:54:31,953 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:54:31,953 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 13 letters. Loop has 4 letters. [2021-12-21 21:54:31,953 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:54:31,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 9 letters. Loop has 8 letters. [2021-12-21 21:54:31,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:54:31,954 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 68 transitions. [2021-12-21 21:54:31,956 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-21 21:54:31,957 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 43 states and 60 transitions. [2021-12-21 21:54:31,957 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2021-12-21 21:54:31,957 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2021-12-21 21:54:31,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 60 transitions. [2021-12-21 21:54:31,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 21:54:31,958 INFO L681 BuchiCegarLoop]: Abstraction has 43 states and 60 transitions. [2021-12-21 21:54:31,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 60 transitions. [2021-12-21 21:54:31,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2021-12-21 21:54:31,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 8 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-21 21:54:31,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 46 transitions. [2021-12-21 21:54:31,961 INFO L704 BuchiCegarLoop]: Abstraction has 34 states and 46 transitions. [2021-12-21 21:54:31,961 INFO L587 BuchiCegarLoop]: Abstraction has 34 states and 46 transitions. [2021-12-21 21:54:31,961 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-21 21:54:31,961 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 46 transitions. [2021-12-21 21:54:31,962 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-21 21:54:31,962 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:54:31,962 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:54:31,963 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 21:54:31,963 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-21 21:54:31,963 INFO L791 eck$LassoCheckResult]: Stem: 402#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 403#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1, main_~y~0#1, main_~r~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 412#L19 assume !!(main_~x~0#1 <= 28); 427#L20 assume !!(main_~y~0#1 <= 3); 425#L21 assume !(main_~x~0#1 < 0 || main_~y~0#1 < 0); 405#L24 call main_#t~ret5#1 := Ack(main_~x~0#1, main_~y~0#1);< 420#AckENTRY ~m := #in~m;~n := #in~n; 408#L10 assume !(0 == ~m); 409#L11 assume !(0 == ~n); 413#L12 call #t~ret1 := Ack(~m, ~n - 1);< 419#AckENTRY ~m := #in~m;~n := #in~n; 434#L10 assume !(0 == ~m); 435#L11 assume 0 == ~n; 416#L11-1 [2021-12-21 21:54:31,963 INFO L793 eck$LassoCheckResult]: Loop: 416#L11-1 call #t~ret0 := Ack(~m - 1, 1);< 406#AckENTRY ~m := #in~m;~n := #in~n; 432#L10 assume !(0 == ~m); 433#L11 assume 0 == ~n; 416#L11-1 [2021-12-21 21:54:31,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:54:31,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1483834541, now seen corresponding path program 1 times [2021-12-21 21:54:31,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:54:31,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078420072] [2021-12-21 21:54:31,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:54:31,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:54:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:54:31,969 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:54:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:54:31,973 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:54:31,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:54:31,974 INFO L85 PathProgramCache]: Analyzing trace with hash 2055710, now seen corresponding path program 2 times [2021-12-21 21:54:31,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:54:31,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694508075] [2021-12-21 21:54:31,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:54:31,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:54:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:54:31,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:54:31,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 21:54:31,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694508075] [2021-12-21 21:54:32,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694508075] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 21:54:32,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 21:54:32,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 21:54:32,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785220082] [2021-12-21 21:54:32,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 21:54:32,002 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-21 21:54:32,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 21:54:32,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 21:54:32,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 21:54:32,006 INFO L87 Difference]: Start difference. First operand 34 states and 46 transitions. cyclomatic complexity: 15 Second operand has 4 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:54:32,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 21:54:32,036 INFO L93 Difference]: Finished difference Result 48 states and 64 transitions. [2021-12-21 21:54:32,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 21:54:32,036 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 64 transitions. [2021-12-21 21:54:32,040 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-12-21 21:54:32,042 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 46 states and 62 transitions. [2021-12-21 21:54:32,042 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2021-12-21 21:54:32,043 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2021-12-21 21:54:32,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 62 transitions. [2021-12-21 21:54:32,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 21:54:32,043 INFO L681 BuchiCegarLoop]: Abstraction has 46 states and 62 transitions. [2021-12-21 21:54:32,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 62 transitions. [2021-12-21 21:54:32,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-12-21 21:54:32,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 32 states have internal predecessors, (36), 11 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (11), 6 states have call predecessors, (11), 8 states have call successors, (11) [2021-12-21 21:54:32,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2021-12-21 21:54:32,050 INFO L704 BuchiCegarLoop]: Abstraction has 45 states and 61 transitions. [2021-12-21 21:54:32,050 INFO L587 BuchiCegarLoop]: Abstraction has 45 states and 61 transitions. [2021-12-21 21:54:32,050 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-21 21:54:32,050 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 61 transitions. [2021-12-21 21:54:32,053 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-12-21 21:54:32,053 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:54:32,053 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:54:32,054 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 21:54:32,054 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1] [2021-12-21 21:54:32,054 INFO L791 eck$LassoCheckResult]: Stem: 497#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 498#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1, main_~y~0#1, main_~r~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 506#L19 assume !!(main_~x~0#1 <= 28); 521#L20 assume !!(main_~y~0#1 <= 3); 519#L21 assume !(main_~x~0#1 < 0 || main_~y~0#1 < 0); 496#L24 call main_#t~ret5#1 := Ack(main_~x~0#1, main_~y~0#1);< 522#AckENTRY ~m := #in~m;~n := #in~n; 499#L10 assume !(0 == ~m); 500#L11 assume !(0 == ~n); 503#L12 call #t~ret1 := Ack(~m, ~n - 1);< 510#AckENTRY ~m := #in~m;~n := #in~n; 536#L10 assume !(0 == ~m); 526#L11 assume 0 == ~n; 508#L11-1 [2021-12-21 21:54:32,054 INFO L793 eck$LassoCheckResult]: Loop: 508#L11-1 call #t~ret0 := Ack(~m - 1, 1);< 525#AckENTRY ~m := #in~m;~n := #in~n; 530#L10 assume !(0 == ~m); 531#L11 assume !(0 == ~n); 507#L12 call #t~ret1 := Ack(~m, ~n - 1);< 495#AckENTRY ~m := #in~m;~n := #in~n; 535#L10 assume !(0 == ~m); 534#L11 assume 0 == ~n; 508#L11-1 [2021-12-21 21:54:32,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:54:32,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1483834541, now seen corresponding path program 2 times [2021-12-21 21:54:32,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:54:32,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163928964] [2021-12-21 21:54:32,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:54:32,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:54:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:54:32,074 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:54:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:54:32,082 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:54:32,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:54:32,083 INFO L85 PathProgramCache]: Analyzing trace with hash 119772412, now seen corresponding path program 1 times [2021-12-21 21:54:32,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:54:32,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999935107] [2021-12-21 21:54:32,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:54:32,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:54:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:54:32,091 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:54:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:54:32,097 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:54:32,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:54:32,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1170976168, now seen corresponding path program 1 times [2021-12-21 21:54:32,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:54:32,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127179131] [2021-12-21 21:54:32,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:54:32,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:54:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:54:32,112 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:54:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:54:32,122 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:54:32,251 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:54:32,252 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:54:32,252 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:54:32,252 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:54:32,252 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 21:54:32,252 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:32,252 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:54:32,252 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:54:32,252 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration4_Loop [2021-12-21 21:54:32,252 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:54:32,252 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:54:32,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:32,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:32,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:32,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:32,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:32,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:32,305 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:54:32,305 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 21:54:32,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:32,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:32,306 INFO L229 MonitoredProcess]: Starting monitored process 47 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) [2021-12-21 21:54:32,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-12-21 21:54:32,308 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:32,309 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:32,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-12-21 21:54:32,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:32,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:32,341 INFO L229 MonitoredProcess]: Starting monitored process 48 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) [2021-12-21 21:54:32,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-12-21 21:54:32,342 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 21:54:32,343 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:32,502 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:32,502 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~m=0, Ack_#in~m=0} Honda state: {Ack_~m=0, Ack_#in~m=0} Generalized eigenvectors: [{Ack_~m=0, Ack_#in~m=0}, {Ack_~m=-1, Ack_#in~m=-1}, {Ack_~m=0, Ack_#in~m=0}] Lambdas: [7, 1, 12] Nus: [0, 1] [2021-12-21 21:54:32,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-12-21 21:54:32,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:32,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:32,518 INFO L229 MonitoredProcess]: Starting monitored process 49 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) [2021-12-21 21:54:32,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-12-21 21:54:32,521 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:32,521 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:32,528 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:32,528 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret2=0} Honda state: {Ack_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:32,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-12-21 21:54:32,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:32,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:32,544 INFO L229 MonitoredProcess]: Starting monitored process 50 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) [2021-12-21 21:54:32,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-12-21 21:54:32,546 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:32,546 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:32,566 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:32,567 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret1=0} Honda state: {Ack_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:32,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-12-21 21:54:32,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:32,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:32,584 INFO L229 MonitoredProcess]: Starting monitored process 51 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) [2021-12-21 21:54:32,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-12-21 21:54:32,586 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:32,586 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:32,607 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:32,607 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret0=0} Honda state: {Ack_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:32,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-12-21 21:54:32,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:32,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:32,624 INFO L229 MonitoredProcess]: Starting monitored process 52 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) [2021-12-21 21:54:32,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-12-21 21:54:32,626 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:32,626 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:32,647 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:32,648 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#in~n=0, Ack_~n=0} Honda state: {Ack_#in~n=0, Ack_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:32,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-12-21 21:54:32,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:32,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:32,665 INFO L229 MonitoredProcess]: Starting monitored process 53 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) [2021-12-21 21:54:32,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-12-21 21:54:32,667 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:32,667 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:32,688 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:32,688 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:32,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-12-21 21:54:32,840 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:54:32,840 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:54:32,840 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:54:32,840 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:54:32,840 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 21:54:32,840 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:32,841 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:54:32,841 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:54:32,841 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration4_Lasso [2021-12-21 21:54:32,841 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:54:32,841 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:54:32,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:32,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:32,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:32,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:32,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:32,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:32,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:32,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:32,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:32,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:32,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:32,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:32,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:32,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:54:32,955 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:54:32,956 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 21:54:32,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:32,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:32,957 INFO L229 MonitoredProcess]: Starting monitored process 54 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) [2021-12-21 21:54:32,960 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:32,960 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:32,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-12-21 21:54:32,987 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:32,987 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:33,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-12-21 21:54:33,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:33,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:33,015 INFO L229 MonitoredProcess]: Starting monitored process 55 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) [2021-12-21 21:54:33,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-12-21 21:54:33,019 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:33,019 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:33,051 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:54:33,051 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3#1=0} Honda state: {ULTIMATE.start_main_#t~nondet3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:54:33,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-12-21 21:54:33,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:33,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:33,070 INFO L229 MonitoredProcess]: Starting monitored process 56 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) [2021-12-21 21:54:33,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-12-21 21:54:33,072 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:54:33,072 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:54:33,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-12-21 21:54:33,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:54:33,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:54:33,105 INFO L229 MonitoredProcess]: Starting monitored process 57 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) [2021-12-21 21:54:33,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-12-21 21:54:33,108 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 21:54:33,108 INFO L160 nArgumentSynthesizer]: Using integer mode.