./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/RecursiveMultiplication-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 791161d1 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/RecursiveMultiplication-1.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 759adb73d7cf84e38b053793a18c9790a1be4e7fcbaa9f1ea135fb0a39711b48 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 14:12:52,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 14:12:52,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 14:12:52,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 14:12:52,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 14:12:52,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 14:12:52,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 14:12:52,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 14:12:52,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 14:12:52,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 14:12:52,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 14:12:52,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 14:12:52,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 14:12:52,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 14:12:52,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 14:12:52,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 14:12:52,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 14:12:52,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 14:12:52,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 14:12:52,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 14:12:52,837 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 14:12:52,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 14:12:52,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 14:12:52,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 14:12:52,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 14:12:52,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 14:12:52,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 14:12:52,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 14:12:52,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 14:12:52,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 14:12:52,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 14:12:52,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 14:12:52,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 14:12:52,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 14:12:52,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 14:12:52,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 14:12:52,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 14:12:52,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 14:12:52,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 14:12:52,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 14:12:52,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 14:12:52,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 14:12:52,856 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-23 14:12:52,889 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 14:12:52,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 14:12:52,892 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 14:12:52,893 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 14:12:52,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 14:12:52,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 14:12:52,894 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 14:12:52,895 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-23 14:12:52,895 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-23 14:12:52,896 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-23 14:12:52,896 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-23 14:12:52,896 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-23 14:12:52,896 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-23 14:12:52,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 14:12:52,896 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 14:12:52,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 14:12:52,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 14:12:52,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-23 14:12:52,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-23 14:12:52,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-23 14:12:52,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 14:12:52,899 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-23 14:12:52,899 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 14:12:52,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-23 14:12:52,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 14:12:52,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 14:12:52,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 14:12:52,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 14:12:52,901 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-23 14:12:52,901 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 759adb73d7cf84e38b053793a18c9790a1be4e7fcbaa9f1ea135fb0a39711b48 [2022-07-23 14:12:53,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 14:12:53,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 14:12:53,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 14:12:53,140 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 14:12:53,140 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 14:12:53,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/RecursiveMultiplication-1.c [2022-07-23 14:12:53,200 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c7a18a6d/e0bb7d3c27c944aca9b74b4dfd5060a2/FLAG0a9621ea0 [2022-07-23 14:12:53,555 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 14:12:53,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/RecursiveMultiplication-1.c [2022-07-23 14:12:53,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c7a18a6d/e0bb7d3c27c944aca9b74b4dfd5060a2/FLAG0a9621ea0 [2022-07-23 14:12:53,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c7a18a6d/e0bb7d3c27c944aca9b74b4dfd5060a2 [2022-07-23 14:12:53,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 14:12:53,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 14:12:53,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 14:12:53,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 14:12:53,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 14:12:53,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:12:53" (1/1) ... [2022-07-23 14:12:53,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49905260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:12:53, skipping insertion in model container [2022-07-23 14:12:53,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:12:53" (1/1) ... [2022-07-23 14:12:53,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 14:12:53,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 14:12:53,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:12:53,718 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 14:12:53,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:12:53,752 INFO L208 MainTranslator]: Completed translation [2022-07-23 14:12:53,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:12:53 WrapperNode [2022-07-23 14:12:53,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 14:12:53,753 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 14:12:53,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 14:12:53,753 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 14:12:53,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:12:53" (1/1) ... [2022-07-23 14:12:53,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:12:53" (1/1) ... [2022-07-23 14:12:53,773 INFO L137 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 17 [2022-07-23 14:12:53,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 14:12:53,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 14:12:53,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 14:12:53,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 14:12:53,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:12:53" (1/1) ... [2022-07-23 14:12:53,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:12:53" (1/1) ... [2022-07-23 14:12:53,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:12:53" (1/1) ... [2022-07-23 14:12:53,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:12:53" (1/1) ... [2022-07-23 14:12:53,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:12:53" (1/1) ... [2022-07-23 14:12:53,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:12:53" (1/1) ... [2022-07-23 14:12:53,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:12:53" (1/1) ... [2022-07-23 14:12:53,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 14:12:53,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 14:12:53,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 14:12:53,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 14:12:53,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:12:53" (1/1) ... [2022-07-23 14:12:53,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:53,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:12:53,820 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:12:53,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-23 14:12:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2022-07-23 14:12:53,860 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2022-07-23 14:12:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 14:12:53,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 14:12:53,901 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 14:12:53,902 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 14:12:53,974 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 14:12:53,980 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 14:12:53,980 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-23 14:12:53,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:12:53 BoogieIcfgContainer [2022-07-23 14:12:53,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 14:12:53,982 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-23 14:12:53,983 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-23 14:12:53,985 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-23 14:12:53,986 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:12:53,986 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.07 02:12:53" (1/3) ... [2022-07-23 14:12:53,987 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@733748dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:12:53, skipping insertion in model container [2022-07-23 14:12:53,987 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:12:53,987 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:12:53" (2/3) ... [2022-07-23 14:12:53,988 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@733748dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:12:53, skipping insertion in model container [2022-07-23 14:12:53,988 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:12:53,988 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:12:53" (3/3) ... [2022-07-23 14:12:53,989 INFO L354 chiAutomizerObserver]: Analyzing ICFG RecursiveMultiplication-1.c [2022-07-23 14:12:54,031 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-23 14:12:54,032 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-23 14:12:54,032 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-23 14:12:54,032 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-23 14:12:54,032 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-23 14:12:54,032 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-23 14:12:54,033 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-23 14:12:54,033 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-23 14:12:54,036 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-23 14:12:54,051 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-23 14:12:54,052 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:12:54,052 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:12:54,057 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-23 14:12:54,057 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:12:54,057 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-23 14:12:54,058 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-23 14:12:54,063 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-23 14:12:54,063 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:12:54,063 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:12:54,064 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-23 14:12:54,064 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:12:54,069 INFO L752 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 13#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~ret4#1, main_~m~0#1, main_~n~0#1, main_~res~0#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 11#L26true assume !!(-65535 <= main_~m~0#1 && main_~m~0#1 <= 65535); 5#L27true assume !!(-65535 <= main_~n~0#1 && main_~n~0#1 <= 65535); 15#L28true call main_#t~ret4#1 := mult(main_~m~0#1, main_~n~0#1);< 7#multENTRYtrue [2022-07-23 14:12:54,069 INFO L754 eck$LassoCheckResult]: Loop: 7#multENTRYtrue ~n := #in~n;~m := #in~m; 4#L13true assume ~m < 0; 17#L14true call #t~ret0 := mult(~n, -~m);< 7#multENTRYtrue [2022-07-23 14:12:54,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:12:54,074 INFO L85 PathProgramCache]: Analyzing trace with hash 42056124, now seen corresponding path program 1 times [2022-07-23 14:12:54,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:12:54,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002764600] [2022-07-23 14:12:54,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:12:54,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:12:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:12:54,141 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:12:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:12:54,158 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:12:54,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:12:54,161 INFO L85 PathProgramCache]: Analyzing trace with hash 29916, now seen corresponding path program 1 times [2022-07-23 14:12:54,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:12:54,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864866219] [2022-07-23 14:12:54,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:12:54,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:12:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:12:54,169 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:12:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:12:54,176 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:12:54,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:12:54,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1236460223, now seen corresponding path program 1 times [2022-07-23 14:12:54,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:12:54,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12365837] [2022-07-23 14:12:54,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:12:54,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:12:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:12:54,196 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:12:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:12:54,212 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:12:54,319 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:12:54,320 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:12:54,320 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:12:54,320 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:12:54,320 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:12:54,320 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:54,321 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:12:54,321 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:12:54,321 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration1_Loop [2022-07-23 14:12:54,321 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:12:54,321 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:12:54,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:12:54,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:12:54,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:12:54,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:12:54,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:12:54,347 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:12:54,350 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:12:54,412 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:12:54,413 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:12:54,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:54,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:12:54,419 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:12:54,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-23 14:12:54,422 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:12:54,423 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:12:54,446 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:12:54,446 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:12:54,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-07-23 14:12:54,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:54,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:12:54,480 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:12:54,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-07-23 14:12:54,483 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:12:54,483 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:12:54,509 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:12:54,509 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:12:54,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-07-23 14:12:54,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:54,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:12:54,537 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:12:54,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-23 14:12:54,540 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:12:54,540 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:12:54,564 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:12:54,564 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0} Honda state: {mult_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:12:54,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-07-23 14:12:54,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:54,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:12:54,609 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:12:54,616 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:12:54,616 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:12:54,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-23 14:12:54,635 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:12:54,635 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:12:54,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-07-23 14:12:54,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:54,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:12:54,662 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:12:54,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-07-23 14:12:54,664 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:12:54,664 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:12:54,682 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:12:54,682 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:12:54,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-07-23 14:12:54,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:54,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:12:54,700 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:12:54,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-07-23 14:12:54,702 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:12:54,702 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:12:54,725 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:12:54,725 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:12:54,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-07-23 14:12:54,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:54,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:12:54,743 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:12:54,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-07-23 14:12:54,745 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:12:54,745 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:12:54,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-07-23 14:12:54,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:54,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:12:54,806 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:12:54,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-07-23 14:12:54,814 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:12:54,814 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:12:54,878 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:12:54,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-07-23 14:12:54,883 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:12:54,883 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:12:54,883 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:12:54,883 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:12:54,884 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:12:54,884 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:54,884 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:12:54,884 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:12:54,884 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration1_Loop [2022-07-23 14:12:54,884 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:12:54,884 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:12:54,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:12:54,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:12:54,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:12:54,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:12:54,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:12:54,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:12:54,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:12:54,949 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:12:54,953 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:12:54,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:54,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:12:54,956 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:12:54,964 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:12:54,972 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:12:54,972 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:12:54,973 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:12:54,973 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:12:54,973 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:12:54,975 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:12:54,975 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:12:54,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-07-23 14:12:54,987 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:12:55,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-07-23 14:12:55,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:55,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:12:55,029 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:12:55,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-07-23 14:12:55,031 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:12:55,040 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:12:55,040 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:12:55,040 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:12:55,041 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:12:55,041 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:12:55,043 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:12:55,043 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:12:55,056 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:12:55,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-07-23 14:12:55,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:55,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:12:55,078 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:12:55,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-07-23 14:12:55,081 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:12:55,087 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:12:55,088 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:12:55,088 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:12:55,088 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:12:55,088 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:12:55,089 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:12:55,089 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:12:55,099 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:12:55,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-07-23 14:12:55,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:55,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:12:55,116 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:12:55,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-07-23 14:12:55,118 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:12:55,124 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:12:55,124 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:12:55,124 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:12:55,124 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:12:55,124 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:12:55,125 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:12:55,125 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:12:55,131 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:12:55,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-07-23 14:12:55,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:55,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:12:55,149 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:12:55,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-07-23 14:12:55,151 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:12:55,157 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:12:55,157 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:12:55,158 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:12:55,158 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:12:55,158 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:12:55,160 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:12:55,160 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:12:55,166 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:12:55,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-07-23 14:12:55,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:55,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:12:55,184 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:12:55,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-07-23 14:12:55,189 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:12:55,194 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:12:55,195 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:12:55,195 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:12:55,195 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:12:55,195 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:12:55,196 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:12:55,196 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:12:55,198 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:12:55,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-07-23 14:12:55,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:55,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:12:55,214 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:12:55,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-07-23 14:12:55,216 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:12:55,222 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:12:55,222 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:12:55,222 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:12:55,222 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:12:55,222 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:12:55,224 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:12:55,224 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:12:55,235 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:12:55,238 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-23 14:12:55,238 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:12:55,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:55,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:12:55,241 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:12:55,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-07-23 14:12:55,271 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:12:55,271 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:12:55,272 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:12:55,272 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2022-07-23 14:12:55,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-07-23 14:12:55,290 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:12:55,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:12:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:12:55,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:12:55,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:12:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:12:55,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 14:12:55,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:12:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:12:55,424 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-23 14:12:55,426 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-07-23 14:12:55,529 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 47 states and 60 transitions. Complement of second has 12 states. [2022-07-23 14:12:55,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-23 14:12:55,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-07-23 14:12:55,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-07-23 14:12:55,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 3 letters. [2022-07-23 14:12:55,542 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:12:55,542 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 3 letters. [2022-07-23 14:12:55,542 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:12:55,542 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 6 letters. [2022-07-23 14:12:55,543 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:12:55,543 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 60 transitions. [2022-07-23 14:12:55,547 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-23 14:12:55,550 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 22 states and 25 transitions. [2022-07-23 14:12:55,551 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2022-07-23 14:12:55,551 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2022-07-23 14:12:55,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 25 transitions. [2022-07-23 14:12:55,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:12:55,552 INFO L369 hiAutomatonCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-07-23 14:12:55,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 25 transitions. [2022-07-23 14:12:55,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 15. [2022-07-23 14:12:55,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:12:55,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2022-07-23 14:12:55,603 INFO L392 hiAutomatonCegarLoop]: Abstraction has 15 states and 18 transitions. [2022-07-23 14:12:55,604 INFO L374 stractBuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2022-07-23 14:12:55,604 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-23 14:12:55,604 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2022-07-23 14:12:55,605 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-23 14:12:55,607 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:12:55,607 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:12:55,607 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 14:12:55,607 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-23 14:12:55,608 INFO L752 eck$LassoCheckResult]: Stem: 124#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 125#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~ret4#1, main_~m~0#1, main_~n~0#1, main_~res~0#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 137#L26 assume !!(-65535 <= main_~m~0#1 && main_~m~0#1 <= 65535); 131#L27 assume !!(-65535 <= main_~n~0#1 && main_~n~0#1 <= 65535); 127#L28 call main_#t~ret4#1 := mult(main_~m~0#1, main_~n~0#1);< 132#multENTRY ~n := #in~n;~m := #in~m; 126#L13 assume !(~m < 0); 128#L16 [2022-07-23 14:12:55,608 INFO L754 eck$LassoCheckResult]: Loop: 128#L16 assume !(0 == ~m); 134#L19 call #t~ret1 := mult(~n, ~m - 1);< 136#multENTRY ~n := #in~n;~m := #in~m; 138#L13 assume !(~m < 0); 128#L16 [2022-07-23 14:12:55,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:12:55,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1761229506, now seen corresponding path program 1 times [2022-07-23 14:12:55,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:12:55,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395714810] [2022-07-23 14:12:55,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:12:55,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:12:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:12:55,619 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:12:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:12:55,632 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:12:55,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:12:55,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1254111, now seen corresponding path program 1 times [2022-07-23 14:12:55,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:12:55,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737883389] [2022-07-23 14:12:55,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:12:55,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:12:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:12:55,638 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:12:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:12:55,641 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:12:55,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:12:55,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1744825056, now seen corresponding path program 1 times [2022-07-23 14:12:55,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:12:55,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709643507] [2022-07-23 14:12:55,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:12:55,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:12:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:12:55,656 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:12:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:12:55,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:12:55,749 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:12:55,749 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:12:55,750 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:12:55,750 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:12:55,750 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:12:55,750 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:55,750 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:12:55,750 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:12:55,750 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration2_Loop [2022-07-23 14:12:55,750 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:12:55,751 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:12:55,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:12:55,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:12:55,755 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:12:55,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:12:55,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:12:55,800 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:12:55,800 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:12:55,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:55,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:12:55,802 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:12:55,819 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:12:55,819 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:12:55,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-07-23 14:12:55,836 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:12:55,836 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:12:55,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-07-23 14:12:55,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:55,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:12:55,863 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:12:55,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-07-23 14:12:55,866 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:12:55,866 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:12:55,886 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:12:55,887 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:12:55,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-07-23 14:12:55,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:55,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:12:55,915 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:12:55,923 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:12:55,923 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:12:55,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-07-23 14:12:55,944 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:12:55,944 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:12:55,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-07-23 14:12:55,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:55,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:12:55,970 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:12:55,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-07-23 14:12:55,972 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:12:55,972 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:12:56,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-07-23 14:12:56,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:12:56,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:12:56,005 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:12:56,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-07-23 14:12:56,008 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:12:56,008 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:12:56,050 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 [2022-07-23 14:13:00,427 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:13:00,432 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 [2022-07-23 14:13:00,432 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:13:00,432 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:13:00,432 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:13:00,432 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:13:00,432 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:13:00,432 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:13:00,432 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:13:00,432 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:13:00,432 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration2_Loop [2022-07-23 14:13:00,432 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:13:00,432 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:13:00,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:13:00,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:13:00,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:13:00,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:13:00,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:13:00,496 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:13:00,496 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:13:00,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:13:00,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:13:00,497 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:13:00,504 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:13:00,511 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:13:00,511 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:13:00,512 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:13:00,512 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:13:00,512 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:13:00,512 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:13:00,512 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:13:00,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-07-23 14:13:00,527 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:13:00,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-07-23 14:13:00,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:13:00,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:13:00,552 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:13:00,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-07-23 14:13:00,560 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:13:00,566 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:13:00,566 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:13:00,566 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:13:00,566 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:13:00,566 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:13:00,567 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:13:00,567 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:13:00,568 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:13:00,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-07-23 14:13:00,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:13:00,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:13:00,585 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) [2022-07-23 14:13:00,588 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 [2022-07-23 14:13:00,589 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:13:00,594 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:13:00,595 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:13:00,595 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:13:00,595 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:13:00,595 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:13:00,595 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:13:00,595 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:13:00,606 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:13:00,628 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 [2022-07-23 14:13:00,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:13:00,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:13:00,630 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:13:00,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-07-23 14:13:00,632 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:13:00,639 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:13:00,640 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:13:00,640 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:13:00,640 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:13:00,640 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:13:00,641 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:13:00,641 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:13:00,655 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:13:00,665 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:13:00,665 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-23 14:13:00,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:13:00,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:13:00,668 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:13:00,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-07-23 14:13:00,700 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:13:00,700 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:13:00,700 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:13:00,700 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_~m) = 1*mult_~m Supporting invariants [] [2022-07-23 14:13:00,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-07-23 14:13:00,716 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:13:00,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:13:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:13:00,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:13:00,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:13:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:13:00,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 14:13:00,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:13:00,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:13:00,787 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-23 14:13:00,787 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-07-23 14:13:00,815 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 27 states and 32 transitions. Complement of second has 13 states. [2022-07-23 14:13:00,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-07-23 14:13:00,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-07-23 14:13:00,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2022-07-23 14:13:00,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 7 letters. Loop has 4 letters. [2022-07-23 14:13:00,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:13:00,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 11 letters. Loop has 4 letters. [2022-07-23 14:13:00,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:13:00,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 7 letters. Loop has 8 letters. [2022-07-23 14:13:00,818 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:13:00,818 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2022-07-23 14:13:00,819 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-23 14:13:00,820 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 26 states and 31 transitions. [2022-07-23 14:13:00,820 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2022-07-23 14:13:00,820 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-07-23 14:13:00,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 31 transitions. [2022-07-23 14:13:00,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:13:00,821 INFO L369 hiAutomatonCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-07-23 14:13:00,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 31 transitions. [2022-07-23 14:13:00,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-07-23 14:13:00,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 6 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:13:00,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2022-07-23 14:13:00,823 INFO L392 hiAutomatonCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-07-23 14:13:00,823 INFO L374 stractBuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-07-23 14:13:00,823 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-23 14:13:00,823 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 28 transitions. [2022-07-23 14:13:00,824 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-23 14:13:00,824 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:13:00,824 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:13:00,824 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 14:13:00,824 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:13:00,825 INFO L752 eck$LassoCheckResult]: Stem: 232#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 233#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~ret4#1, main_~m~0#1, main_~n~0#1, main_~res~0#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 248#L26 assume !!(-65535 <= main_~m~0#1 && main_~m~0#1 <= 65535); 240#L27 assume !!(-65535 <= main_~n~0#1 && main_~n~0#1 <= 65535); 241#L28 call main_#t~ret4#1 := mult(main_~m~0#1, main_~n~0#1);< 246#multENTRY ~n := #in~n;~m := #in~m; 252#L13 assume !(~m < 0); 253#L16 assume !(0 == ~m); 235#L19 call #t~ret1 := mult(~n, ~m - 1);< 254#multENTRY ~n := #in~n;~m := #in~m; 234#L13 assume ~m < 0; 236#L14 [2022-07-23 14:13:00,825 INFO L754 eck$LassoCheckResult]: Loop: 236#L14 call #t~ret0 := mult(~n, -~m);< 242#multENTRY ~n := #in~n;~m := #in~m; 244#L13 assume ~m < 0; 236#L14 [2022-07-23 14:13:00,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:13:00,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1744825059, now seen corresponding path program 1 times [2022-07-23 14:13:00,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:13:00,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957726795] [2022-07-23 14:13:00,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:13:00,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:13:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:13:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:13:00,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 14:13:00,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957726795] [2022-07-23 14:13:00,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957726795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 14:13:00,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 14:13:00,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 14:13:00,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209781605] [2022-07-23 14:13:00,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 14:13:00,873 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-23 14:13:00,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:13:00,873 INFO L85 PathProgramCache]: Analyzing trace with hash 60546, now seen corresponding path program 2 times [2022-07-23 14:13:00,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:13:00,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76952239] [2022-07-23 14:13:00,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:13:00,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:13:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:13:00,877 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:13:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:13:00,880 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:13:00,934 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:13:00,934 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:13:00,934 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:13:00,934 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:13:00,934 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:13:00,934 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:13:00,934 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:13:00,934 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:13:00,934 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration3_Loop [2022-07-23 14:13:00,934 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:13:00,934 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:13:00,936 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:13:00,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:13:00,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:13:00,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:13:00,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:13:00,991 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:13:00,991 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:13:00,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:13:00,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:13:00,996 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:13:00,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-07-23 14:13:00,999 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:13:00,999 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:13:01,021 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:13:01,021 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=-8, mult_#in~n=-8} Honda state: {mult_~n=-8, mult_#in~n=-8} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:13:01,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2022-07-23 14:13:01,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:13:01,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:13:01,042 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:13:01,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-07-23 14:13:01,045 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:13:01,045 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:13:01,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-07-23 14:13:01,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:13:01,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:13:01,077 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:13:01,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-07-23 14:13:01,079 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:13:01,079 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:13:02,071 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:13:02,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-07-23 14:13:02,076 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:13:02,076 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:13:02,076 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:13:02,076 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:13:02,076 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:13:02,076 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:13:02,076 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:13:02,076 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:13:02,076 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration3_Loop [2022-07-23 14:13:02,076 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:13:02,076 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:13:02,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:13:02,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:13:02,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:13:02,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:13:02,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:13:02,147 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:13:02,147 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:13:02,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:13:02,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:13:02,152 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) [2022-07-23 14:13:02,153 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 [2022-07-23 14:13:02,155 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:13:02,163 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:13:02,163 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:13:02,163 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:13:02,163 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:13:02,163 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:13:02,166 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:13:02,166 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:13:02,187 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:13:02,207 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 [2022-07-23 14:13:02,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:13:02,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:13:02,209 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) [2022-07-23 14:13:02,209 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 [2022-07-23 14:13:02,212 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:13:02,218 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:13:02,218 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:13:02,218 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:13:02,218 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:13:02,218 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:13:02,219 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:13:02,219 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:13:02,230 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:13:02,232 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-23 14:13:02,232 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:13:02,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:13:02,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:13:02,239 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) [2022-07-23 14:13:02,242 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 [2022-07-23 14:13:02,242 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:13:02,242 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:13:02,242 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:13:02,242 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_~m) = 1*mult_~m Supporting invariants [] [2022-07-23 14:13:02,258 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 [2022-07-23 14:13:02,259 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:13:02,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:13:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:13:02,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 14:13:02,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:13:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:13:02,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 14:13:02,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:13:02,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:13:02,360 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-23 14:13:02,360 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 8 Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:13:02,394 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 8. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 52 states and 62 transitions. Complement of second has 9 states. [2022-07-23 14:13:02,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-23 14:13:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:13:02,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2022-07-23 14:13:02,397 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 3 letters. [2022-07-23 14:13:02,397 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:13:02,397 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 14 letters. Loop has 3 letters. [2022-07-23 14:13:02,397 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:13:02,398 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 6 letters. [2022-07-23 14:13:02,398 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:13:02,398 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 62 transitions. [2022-07-23 14:13:02,409 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-23 14:13:02,412 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 45 states and 55 transitions. [2022-07-23 14:13:02,412 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2022-07-23 14:13:02,413 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2022-07-23 14:13:02,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 55 transitions. [2022-07-23 14:13:02,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:13:02,413 INFO L369 hiAutomatonCegarLoop]: Abstraction has 45 states and 55 transitions. [2022-07-23 14:13:02,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 55 transitions. [2022-07-23 14:13:02,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2022-07-23 14:13:02,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.206896551724138) internal successors, (35), 28 states have internal predecessors, (35), 10 states have call successors, (13), 10 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:13:02,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2022-07-23 14:13:02,422 INFO L392 hiAutomatonCegarLoop]: Abstraction has 39 states and 48 transitions. [2022-07-23 14:13:02,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 14:13:02,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 14:13:02,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-23 14:13:02,426 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 5 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-07-23 14:13:02,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 14:13:02,456 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-07-23 14:13:02,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 14:13:02,457 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 36 transitions. [2022-07-23 14:13:02,458 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-23 14:13:02,458 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2022-07-23 14:13:02,458 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-23 14:13:02,458 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-23 14:13:02,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-23 14:13:02,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-23 14:13:02,458 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:13:02,459 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:13:02,459 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:13:02,459 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-23 14:13:02,459 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-23 14:13:02,459 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-23 14:13:02,459 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-23 14:13:02,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.07 02:13:02 BoogieIcfgContainer [2022-07-23 14:13:02,464 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-23 14:13:02,465 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 14:13:02,465 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 14:13:02,465 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 14:13:02,465 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:12:53" (3/4) ... [2022-07-23 14:13:02,467 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-23 14:13:02,467 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 14:13:02,468 INFO L158 Benchmark]: Toolchain (without parser) took 8894.71ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 59.1MB in the beginning and 48.0MB in the end (delta: 11.2MB). Peak memory consumption was 41.6MB. Max. memory is 16.1GB. [2022-07-23 14:13:02,468 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 94.4MB. Free memory was 66.8MB in the beginning and 66.8MB in the end (delta: 18.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:13:02,468 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.29ms. Allocated memory is still 94.4MB. Free memory was 58.9MB in the beginning and 70.8MB in the end (delta: -11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 14:13:02,469 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.73ms. Allocated memory is still 94.4MB. Free memory was 70.8MB in the beginning and 69.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:13:02,469 INFO L158 Benchmark]: Boogie Preprocessor took 10.88ms. Allocated memory is still 94.4MB. Free memory was 69.2MB in the beginning and 68.6MB in the end (delta: 585.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:13:02,469 INFO L158 Benchmark]: RCFGBuilder took 196.16ms. Allocated memory is still 94.4MB. Free memory was 68.6MB in the beginning and 59.8MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-23 14:13:02,470 INFO L158 Benchmark]: BuchiAutomizer took 8481.63ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 59.8MB in the beginning and 48.8MB in the end (delta: 10.9MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. [2022-07-23 14:13:02,470 INFO L158 Benchmark]: Witness Printer took 2.70ms. Allocated memory is still 125.8MB. Free memory was 48.8MB in the beginning and 48.0MB in the end (delta: 882.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:13:02,472 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 94.4MB. Free memory was 66.8MB in the beginning and 66.8MB in the end (delta: 18.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 178.29ms. Allocated memory is still 94.4MB. Free memory was 58.9MB in the beginning and 70.8MB in the end (delta: -11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.73ms. Allocated memory is still 94.4MB. Free memory was 70.8MB in the beginning and 69.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 10.88ms. Allocated memory is still 94.4MB. Free memory was 69.2MB in the beginning and 68.6MB in the end (delta: 585.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 196.16ms. Allocated memory is still 94.4MB. Free memory was 68.6MB in the beginning and 59.8MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 8481.63ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 59.8MB in the beginning and 48.8MB in the end (delta: 10.9MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. * Witness Printer took 2.70ms. Allocated memory is still 125.8MB. Free memory was 48.8MB in the beginning and 48.0MB in the end (delta: 882.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * \old(m) and consists of 4 locations. One deterministic module has affine ranking function m and consists of 5 locations. One deterministic module has affine ranking function m and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.4s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 7.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 51 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 48 mSDsluCounter, 64 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 46 mSDtfsCounter, 82 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp71 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq168 hnf91 smp100 dnf100 smp100 tf110 neg98 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 33ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 5.9s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-23 14:13:02,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2022-07-23 14:13:02,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2022-07-23 14:13:02,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE