./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/c.01_assume.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-restricted-15/c.01_assume.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 f716f85b4674adf32c5382ff55713973e95460ac3d0ffe3bfad3cafce9960ed4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 14:19:51,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 14:19:51,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 14:19:51,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 14:19:51,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 14:19:51,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 14:19:51,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 14:19:51,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 14:19:51,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 14:19:51,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 14:19:51,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 14:19:51,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 14:19:51,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 14:19:51,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 14:19:51,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 14:19:51,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 14:19:51,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 14:19:51,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 14:19:51,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 14:19:51,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 14:19:51,869 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 14:19:51,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 14:19:51,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 14:19:51,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 14:19:51,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 14:19:51,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 14:19:51,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 14:19:51,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 14:19:51,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 14:19:51,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 14:19:51,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 14:19:51,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 14:19:51,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 14:19:51,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 14:19:51,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 14:19:51,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 14:19:51,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 14:19:51,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 14:19:51,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 14:19:51,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 14:19:51,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 14:19:51,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 14:19:51,900 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-23 14:19:51,929 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 14:19:51,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 14:19:51,930 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 14:19:51,930 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 14:19:51,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 14:19:51,931 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 14:19:51,931 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 14:19:51,932 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-23 14:19:51,932 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-23 14:19:51,932 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-23 14:19:51,932 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-23 14:19:51,933 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-23 14:19:51,933 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-23 14:19:51,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 14:19:51,933 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 14:19:51,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 14:19:51,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 14:19:51,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-23 14:19:51,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-23 14:19:51,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-23 14:19:51,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 14:19:51,934 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-23 14:19:51,934 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 14:19:51,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-23 14:19:51,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 14:19:51,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 14:19:51,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 14:19:51,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 14:19:51,939 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-23 14:19:51,940 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f716f85b4674adf32c5382ff55713973e95460ac3d0ffe3bfad3cafce9960ed4 [2022-07-23 14:19:52,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 14:19:52,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 14:19:52,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 14:19:52,123 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 14:19:52,123 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 14:19:52,124 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/c.01_assume.c [2022-07-23 14:19:52,177 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/031d444b6/e703af38431e48f5baab295ec6798dc0/FLAGfea2eee6b [2022-07-23 14:19:52,581 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 14:19:52,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/c.01_assume.c [2022-07-23 14:19:52,587 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/031d444b6/e703af38431e48f5baab295ec6798dc0/FLAGfea2eee6b [2022-07-23 14:19:52,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/031d444b6/e703af38431e48f5baab295ec6798dc0 [2022-07-23 14:19:52,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 14:19:52,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 14:19:52,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 14:19:52,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 14:19:52,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 14:19:52,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:19:52" (1/1) ... [2022-07-23 14:19:52,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ab7f5d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:19:52, skipping insertion in model container [2022-07-23 14:19:52,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:19:52" (1/1) ... [2022-07-23 14:19:52,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 14:19:52,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 14:19:52,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:19:52,715 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 14:19:52,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:19:52,729 INFO L208 MainTranslator]: Completed translation [2022-07-23 14:19:52,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:19:52 WrapperNode [2022-07-23 14:19:52,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 14:19:52,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 14:19:52,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 14:19:52,731 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 14:19:52,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:19:52" (1/1) ... [2022-07-23 14:19:52,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:19:52" (1/1) ... [2022-07-23 14:19:52,747 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-07-23 14:19:52,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 14:19:52,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 14:19:52,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 14:19:52,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 14:19:52,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:19:52" (1/1) ... [2022-07-23 14:19:52,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:19:52" (1/1) ... [2022-07-23 14:19:52,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:19:52" (1/1) ... [2022-07-23 14:19:52,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:19:52" (1/1) ... [2022-07-23 14:19:52,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:19:52" (1/1) ... [2022-07-23 14:19:52,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:19:52" (1/1) ... [2022-07-23 14:19:52,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:19:52" (1/1) ... [2022-07-23 14:19:52,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 14:19:52,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 14:19:52,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 14:19:52,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 14:19:52,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:19:52" (1/1) ... [2022-07-23 14:19:52,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:52,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:19:52,777 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 14:19:52,782 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 14:19:52,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 14:19:52,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 14:19:52,842 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 14:19:52,844 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 14:19:52,891 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 14:19:52,895 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 14:19:52,895 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-23 14:19:52,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:19:52 BoogieIcfgContainer [2022-07-23 14:19:52,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 14:19:52,897 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-23 14:19:52,897 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-23 14:19:52,899 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-23 14:19:52,900 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:19:52,900 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.07 02:19:52" (1/3) ... [2022-07-23 14:19:52,901 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4d2df4a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:19:52, skipping insertion in model container [2022-07-23 14:19:52,901 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:19:52,901 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:19:52" (2/3) ... [2022-07-23 14:19:52,901 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4d2df4a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:19:52, skipping insertion in model container [2022-07-23 14:19:52,901 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:19:52,901 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:19:52" (3/3) ... [2022-07-23 14:19:52,902 INFO L354 chiAutomizerObserver]: Analyzing ICFG c.01_assume.c [2022-07-23 14:19:52,946 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-23 14:19:52,946 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-23 14:19:52,946 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-23 14:19:52,946 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-23 14:19:52,946 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-23 14:19:52,946 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-23 14:19:52,946 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-23 14:19:52,946 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-23 14:19:52,949 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:19:52,976 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-23 14:19:52,977 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:19:52,977 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:19:52,980 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 14:19:52,980 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:19:52,981 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-23 14:19:52,981 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:19:52,981 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-23 14:19:52,982 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:19:52,982 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:19:52,982 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 14:19:52,982 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:19:52,986 INFO L752 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 5#L9-2true [2022-07-23 14:19:52,986 INFO L754 eck$LassoCheckResult]: Loop: 5#L9-2true assume !!(main_~x~0#1 >= 0 && main_~y~0#1 > 0);main_~y~0#1 := 1; 9#L11-2true assume !((main_~x~0#1 > main_~y~0#1 && main_~y~0#1 > 0) && main_~y~0#1 < 1073741824); 8#L11-3true main_~x~0#1 := main_~x~0#1 - 1; 5#L9-2true [2022-07-23 14:19:52,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:19:52,990 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-23 14:19:52,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:19:53,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229478416] [2022-07-23 14:19:53,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:19:53,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:19:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:19:53,054 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:19:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:19:53,080 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:19:53,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:19:53,090 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2022-07-23 14:19:53,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:19:53,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924501418] [2022-07-23 14:19:53,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:19:53,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:19:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:19:53,105 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:19:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:19:53,113 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:19:53,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:19:53,114 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2022-07-23 14:19:53,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:19:53,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289959756] [2022-07-23 14:19:53,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:19:53,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:19:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:19:53,124 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:19:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:19:53,137 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:19:53,242 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:19:53,243 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:19:53,243 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:19:53,243 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:19:53,243 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:19:53,243 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:53,243 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:19:53,244 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:19:53,244 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration1_Loop [2022-07-23 14:19:53,244 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:19:53,244 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:19:53,255 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 14:19:53,268 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 14:19:53,271 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 14:19:53,328 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:19:53,329 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:19:53,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:53,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:19:53,331 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 14:19:53,332 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 14:19:53,334 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:19:53,334 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:19:53,382 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 14:19:53,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:53,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:19:53,383 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 14:19:53,384 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 14:19:53,388 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:19:53,388 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:19:53,432 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:19:53,437 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 14:19:53,437 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:19:53,437 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:19:53,437 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:19:53,437 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:19:53,437 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:19:53,437 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:53,437 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:19:53,438 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:19:53,438 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration1_Loop [2022-07-23 14:19:53,438 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:19:53,438 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:19:53,439 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 14:19:53,454 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 14:19:53,460 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 14:19:53,511 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:19:53,514 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:19:53,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:53,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:19:53,518 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 14:19:53,520 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 14:19:53,522 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 14:19:53,529 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:19:53,529 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:19:53,530 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:19:53,530 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:19:53,530 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:19:53,534 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:19:53,535 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:19:53,546 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:19:53,566 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:19:53,566 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:19:53,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:53,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:19:53,568 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 14:19:53,569 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 14:19:53,570 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:19:53,570 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:19:53,570 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:19:53,571 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 2*ULTIMATE.start_main_~x~0#1 + 1 Supporting invariants [] [2022-07-23 14:19:53,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-07-23 14:19:53,592 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:19:53,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:19:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:19:53,618 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:19:53,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:19:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:19:53,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:19:53,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:19:53,661 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 14:19:53,685 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-23 14:19:53,686 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:19:53,712 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 36 transitions. Complement of second has 7 states. [2022-07-23 14:19:53,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-23 14:19:53,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:19:53,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2022-07-23 14:19:53,718 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2022-07-23 14:19:53,719 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:19:53,719 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2022-07-23 14:19:53,719 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:19:53,719 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2022-07-23 14:19:53,719 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:19:53,720 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 36 transitions. [2022-07-23 14:19:53,721 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-23 14:19:53,723 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2022-07-23 14:19:53,724 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2022-07-23 14:19:53,724 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2022-07-23 14:19:53,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2022-07-23 14:19:53,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:19:53,725 INFO L369 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-07-23 14:19:53,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2022-07-23 14:19:53,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2022-07-23 14:19:53,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:19:53,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2022-07-23 14:19:53,740 INFO L392 hiAutomatonCegarLoop]: Abstraction has 7 states and 10 transitions. [2022-07-23 14:19:53,740 INFO L374 stractBuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2022-07-23 14:19:53,740 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-23 14:19:53,740 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2022-07-23 14:19:53,740 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-23 14:19:53,740 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:19:53,740 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:19:53,741 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-23 14:19:53,741 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-23 14:19:53,741 INFO L752 eck$LassoCheckResult]: Stem: 75#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 76#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 77#L9-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 > 0);main_~y~0#1 := 1; 79#L11-2 [2022-07-23 14:19:53,741 INFO L754 eck$LassoCheckResult]: Loop: 79#L11-2 assume !!((main_~x~0#1 > main_~y~0#1 && main_~y~0#1 > 0) && main_~y~0#1 < 1073741824);main_~y~0#1 := 2 * main_~y~0#1; 79#L11-2 [2022-07-23 14:19:53,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:19:53,741 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-07-23 14:19:53,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:19:53,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181026926] [2022-07-23 14:19:53,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:19:53,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:19:53,771 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 14:19:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:19:53,773 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:19:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:19:53,780 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:19:53,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:19:53,781 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2022-07-23 14:19:53,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:19:53,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482204770] [2022-07-23 14:19:53,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:19:53,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:19:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:19:53,790 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:19:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:19:53,801 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:19:53,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:19:53,802 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2022-07-23 14:19:53,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:19:53,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772725487] [2022-07-23 14:19:53,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:19:53,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:19:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:19:53,812 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:19:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:19:53,819 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:19:53,837 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:19:53,837 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:19:53,837 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:19:53,837 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:19:53,837 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:19:53,837 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:53,837 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:19:53,837 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:19:53,838 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration2_Loop [2022-07-23 14:19:53,838 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:19:53,838 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:19:53,839 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 14:19:53,841 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 14:19:53,843 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 14:19:53,881 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:19:53,881 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:19:53,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:53,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:19:53,893 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 14:19:53,893 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 14:19:53,895 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:19:53,895 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:19:53,912 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:19:53,912 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:19:53,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-07-23 14:19:53,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:53,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:19:53,931 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 14:19:53,931 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 14:19:53,934 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:19:53,935 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:19:53,949 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:19:53,949 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:19:53,970 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 14:19:53,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:53,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:19:53,976 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 14:19:53,977 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 14:19:53,978 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:19:53,978 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:19:54,029 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 14:19:54,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:54,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:19:54,030 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 14:19:54,031 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 14:19:54,032 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:19:54,033 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:19:54,066 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:19:54,071 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 14:19:54,072 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:19:54,072 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:19:54,072 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:19:54,072 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:19:54,072 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:19:54,072 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:54,072 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:19:54,072 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:19:54,072 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration2_Loop [2022-07-23 14:19:54,072 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:19:54,072 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:19:54,073 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 14:19:54,076 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 14:19:54,078 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 14:19:54,116 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:19:54,117 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:19:54,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:54,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:19:54,118 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 14:19:54,119 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 14:19:54,120 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 14:19:54,127 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:19:54,127 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:19:54,127 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:19:54,127 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:19:54,129 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 14:19:54,130 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 14:19:54,141 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:19:54,157 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 14:19:54,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:54,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:19:54,158 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 14:19:54,159 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 14:19:54,160 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 14:19:54,165 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:19:54,166 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:19:54,166 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:19:54,166 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:19:54,169 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 14:19:54,169 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 14:19:54,180 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:19:54,198 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 14:19:54,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:54,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:19:54,199 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 14:19:54,201 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 14:19:54,202 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 14:19:54,208 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:19:54,208 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:19:54,208 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:19:54,208 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:19:54,208 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:19:54,210 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:19:54,210 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:19:54,226 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:19:54,243 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:19:54,243 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:19:54,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:54,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:19:54,248 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 14:19:54,248 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 14:19:54,283 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:19:54,283 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:19:54,283 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:19:54,283 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = -2*ULTIMATE.start_main_~y~0#1 + 2147483647 Supporting invariants [] [2022-07-23 14:19:54,298 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 14:19:54,299 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:19:54,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:19:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:19:54,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:19:54,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:19:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:19:54,333 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 14:19:54,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:19:54,334 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 14:19:54,335 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-23 14:19:54,335 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:19:54,345 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 19 transitions. Complement of second has 5 states. [2022-07-23 14:19:54,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-23 14:19:54,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:19:54,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-07-23 14:19:54,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 1 letters. [2022-07-23 14:19:54,347 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:19:54,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 1 letters. [2022-07-23 14:19:54,348 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:19:54,348 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2022-07-23 14:19:54,348 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:19:54,348 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2022-07-23 14:19:54,349 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-23 14:19:54,350 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 14 transitions. [2022-07-23 14:19:54,351 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2022-07-23 14:19:54,351 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2022-07-23 14:19:54,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2022-07-23 14:19:54,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:19:54,351 INFO L369 hiAutomatonCegarLoop]: Abstraction has 10 states and 14 transitions. [2022-07-23 14:19:54,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2022-07-23 14:19:54,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2022-07-23 14:19:54,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:19:54,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2022-07-23 14:19:54,353 INFO L392 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2022-07-23 14:19:54,353 INFO L374 stractBuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2022-07-23 14:19:54,353 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-23 14:19:54,353 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2022-07-23 14:19:54,354 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-23 14:19:54,354 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:19:54,354 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:19:54,354 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2022-07-23 14:19:54,354 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-23 14:19:54,356 INFO L752 eck$LassoCheckResult]: Stem: 128#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 129#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 130#L9-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 > 0);main_~y~0#1 := 1; 131#L11-2 assume !((main_~x~0#1 > main_~y~0#1 && main_~y~0#1 > 0) && main_~y~0#1 < 1073741824); 134#L11-3 main_~x~0#1 := main_~x~0#1 - 1; 132#L9-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 > 0);main_~y~0#1 := 1; 133#L11-2 [2022-07-23 14:19:54,356 INFO L754 eck$LassoCheckResult]: Loop: 133#L11-2 assume !!((main_~x~0#1 > main_~y~0#1 && main_~y~0#1 > 0) && main_~y~0#1 < 1073741824);main_~y~0#1 := 2 * main_~y~0#1; 133#L11-2 [2022-07-23 14:19:54,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:19:54,356 INFO L85 PathProgramCache]: Analyzing trace with hash 889696477, now seen corresponding path program 2 times [2022-07-23 14:19:54,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:19:54,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125749908] [2022-07-23 14:19:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:19:54,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:19:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:19:54,369 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:19:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:19:54,372 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:19:54,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:19:54,372 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2022-07-23 14:19:54,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:19:54,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188286097] [2022-07-23 14:19:54,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:19:54,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:19:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:19:54,376 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:19:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:19:54,378 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:19:54,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:19:54,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1810787031, now seen corresponding path program 1 times [2022-07-23 14:19:54,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:19:54,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452650636] [2022-07-23 14:19:54,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:19:54,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:19:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:19:54,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:19:54,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 14:19:54,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452650636] [2022-07-23 14:19:54,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452650636] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 14:19:54,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040005703] [2022-07-23 14:19:54,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:19:54,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 14:19:54,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:19:54,437 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 14:19:54,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-23 14:19:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:19:54,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 14:19:54,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:19:54,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:19:54,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 14:19:54,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:19:54,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040005703] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 14:19:54,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 14:19:54,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-07-23 14:19:54,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549764332] [2022-07-23 14:19:54,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 14:19:54,589 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:19:54,589 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:19:54,589 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:19:54,589 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:19:54,589 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:19:54,589 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:54,589 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:19:54,589 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:19:54,590 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration3_Loop [2022-07-23 14:19:54,590 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:19:54,590 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:19:54,591 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 14:19:54,593 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 14:19:54,598 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 14:19:54,623 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:19:54,623 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:19:54,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:54,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:19:54,625 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 14:19:54,626 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 14:19:54,627 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:19:54,627 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:19:54,648 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:19:54,648 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:19:54,664 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 14:19:54,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:54,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:19:54,665 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 14:19:54,666 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 14:19:54,667 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:19:54,667 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:19:54,703 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 14:19:54,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:54,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:19:54,704 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 14:19:54,705 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 14:19:54,707 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:19:54,707 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:19:54,757 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:19:54,762 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 14:19:54,762 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:19:54,762 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:19:54,762 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:19:54,762 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:19:54,762 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:19:54,762 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:54,762 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:19:54,762 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:19:54,762 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration3_Loop [2022-07-23 14:19:54,762 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:19:54,763 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:19:54,763 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 14:19:54,765 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 14:19:54,772 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 14:19:54,799 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:19:54,799 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:19:54,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:54,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:19:54,801 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 14:19:54,809 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 14:19:54,810 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:19:54,815 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:19:54,815 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:19:54,815 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:19:54,815 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:19:54,817 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 14:19:54,817 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 14:19:54,835 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:19:54,851 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 14:19:54,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:54,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:19:54,852 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 14:19:54,853 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 14:19:54,854 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 14:19:54,860 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:19:54,860 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:19:54,860 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:19:54,860 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:19:54,860 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:19:54,861 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:19:54,861 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:19:54,875 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:19:54,877 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:19:54,877 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:19:54,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:19:54,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:19:54,878 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 14:19:54,880 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 14:19:54,912 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:19:54,912 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:19:54,912 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:19:54,912 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = -2*ULTIMATE.start_main_~y~0#1 + 2147483647 Supporting invariants [] [2022-07-23 14:19:54,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-07-23 14:19:54,931 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:19:54,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:19:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:19:54,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:19:54,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:19:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:19:54,955 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 14:19:54,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:19:54,955 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 14:19:54,956 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-23 14:19:54,956 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:19:54,992 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 16 transitions. Complement of second has 5 states. [2022-07-23 14:19:54,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-23 14:19:54,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:19:54,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-07-23 14:19:54,994 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 1 letters. [2022-07-23 14:19:54,994 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:19:54,994 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-23 14:19:55,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:19:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:19:55,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:19:55,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:19:55,011 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 14:19:55,030 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 14:19:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:19:55,038 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 14:19:55,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:19:55,038 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 14:19:55,039 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-23 14:19:55,039 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:19:55,044 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 16 transitions. Complement of second has 5 states. [2022-07-23 14:19:55,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-23 14:19:55,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:19:55,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-07-23 14:19:55,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 1 letters. [2022-07-23 14:19:55,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:19:55,046 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-23 14:19:55,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:19:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:19:55,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:19:55,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:19:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:19:55,075 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 14:19:55,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:19:55,076 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 14:19:55,076 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-23 14:19:55,076 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:19:55,083 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 10 states and 12 transitions. Complement of second has 4 states. [2022-07-23 14:19:55,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-23 14:19:55,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:19:55,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2022-07-23 14:19:55,084 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 1 letters. [2022-07-23 14:19:55,084 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:19:55,084 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 1 letters. [2022-07-23 14:19:55,084 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:19:55,084 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 2 letters. [2022-07-23 14:19:55,084 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:19:55,085 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2022-07-23 14:19:55,085 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-23 14:19:55,085 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2022-07-23 14:19:55,085 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-23 14:19:55,085 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-23 14:19:55,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-23 14:19:55,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-23 14:19:55,085 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:19:55,086 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:19:55,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 14:19:55,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-23 14:19:55,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-23 14:19:55,089 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:19:55,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 14:19:55,090 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-07-23 14:19:55,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-23 14:19:55,091 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-07-23 14:19:55,091 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-23 14:19:55,091 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-07-23 14:19:55,091 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-23 14:19:55,091 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-23 14:19:55,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-23 14:19:55,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-23 14:19:55,091 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:19:55,091 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:19:55,092 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:19:55,092 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-23 14:19:55,092 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-23 14:19:55,092 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-23 14:19:55,092 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-23 14:19:55,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.07 02:19:55 BoogieIcfgContainer [2022-07-23 14:19:55,097 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-23 14:19:55,097 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 14:19:55,097 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 14:19:55,098 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 14:19:55,098 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:19:52" (3/4) ... [2022-07-23 14:19:55,100 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-23 14:19:55,100 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 14:19:55,100 INFO L158 Benchmark]: Toolchain (without parser) took 2496.58ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 76.8MB in the beginning and 94.4MB in the end (delta: -17.6MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2022-07-23 14:19:55,101 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 81.8MB. Free memory is still 56.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:19:55,101 INFO L158 Benchmark]: CACSL2BoogieTranslator took 125.85ms. Allocated memory is still 98.6MB. Free memory was 76.6MB in the beginning and 67.9MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 14:19:55,101 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.25ms. Allocated memory is still 98.6MB. Free memory was 67.7MB in the beginning and 66.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 14:19:55,102 INFO L158 Benchmark]: Boogie Preprocessor took 9.73ms. Allocated memory is still 98.6MB. Free memory was 66.4MB in the beginning and 65.6MB in the end (delta: 887.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:19:55,102 INFO L158 Benchmark]: RCFGBuilder took 139.06ms. Allocated memory is still 98.6MB. Free memory was 65.6MB in the beginning and 57.5MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 14:19:55,102 INFO L158 Benchmark]: BuchiAutomizer took 2199.67ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 57.5MB in the beginning and 94.4MB in the end (delta: -36.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:19:55,103 INFO L158 Benchmark]: Witness Printer took 2.51ms. Allocated memory is still 127.9MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:19:55,104 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 81.8MB. Free memory is still 56.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 125.85ms. Allocated memory is still 98.6MB. Free memory was 76.6MB in the beginning and 67.9MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.25ms. Allocated memory is still 98.6MB. Free memory was 67.7MB in the beginning and 66.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 9.73ms. Allocated memory is still 98.6MB. Free memory was 66.4MB in the beginning and 65.6MB in the end (delta: 887.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 139.06ms. Allocated memory is still 98.6MB. Free memory was 65.6MB in the beginning and 57.5MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2199.67ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 57.5MB in the beginning and 94.4MB in the end (delta: -36.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.51ms. Allocated memory is still 127.9MB. Free memory is still 94.4MB. 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, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. One deterministic module has affine ranking function 2147483647 + -2 * y and consists of 3 locations. One nondeterministic module has affine ranking function 2147483647 + -2 * y and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 33 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32 IncrementalHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 24 mSDtfsCounter, 32 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax169 hnf100 lsp58 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq141 hnf94 smp100 dnf100 smp100 tf108 neg98 sie119 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 24ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s 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 14:19:55,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-23 14:19:55,347 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