./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-numeric/TwoWay.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e8d55036 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-numeric/TwoWay.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 6e96af222dc7427442f09a30ad05a811063c14ee1b704442df6b3bb77339a035 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 23:14:34,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 23:14:34,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 23:14:34,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 23:14:34,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 23:14:34,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 23:14:34,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 23:14:34,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 23:14:34,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 23:14:34,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 23:14:34,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 23:14:34,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 23:14:34,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 23:14:34,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 23:14:34,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 23:14:34,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 23:14:34,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 23:14:34,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 23:14:34,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 23:14:34,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 23:14:34,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 23:14:34,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 23:14:34,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 23:14:34,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 23:14:34,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 23:14:34,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 23:14:34,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 23:14:34,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 23:14:34,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 23:14:34,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 23:14:34,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 23:14:34,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 23:14:34,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 23:14:34,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 23:14:34,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 23:14:34,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 23:14:34,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 23:14:34,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 23:14:34,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 23:14:34,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 23:14:34,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 23:14:34,926 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-15 23:14:34,942 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 23:14:34,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 23:14:34,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 23:14:34,948 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 23:14:34,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 23:14:34,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 23:14:34,950 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 23:14:34,950 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-15 23:14:34,950 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-15 23:14:34,950 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-15 23:14:34,951 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-15 23:14:34,951 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-15 23:14:34,951 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-15 23:14:34,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 23:14:34,951 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 23:14:34,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 23:14:34,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 23:14:34,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-15 23:14:34,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-15 23:14:34,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-15 23:14:34,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 23:14:34,952 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-15 23:14:34,952 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 23:14:34,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-15 23:14:34,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 23:14:34,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 23:14:34,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 23:14:34,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 23:14:34,955 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-15 23:14:34,955 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e96af222dc7427442f09a30ad05a811063c14ee1b704442df6b3bb77339a035 [2023-02-15 23:14:35,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 23:14:35,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 23:14:35,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 23:14:35,164 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 23:14:35,165 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 23:14:35,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/TwoWay.c [2023-02-15 23:14:36,136 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 23:14:36,298 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 23:14:36,298 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/TwoWay.c [2023-02-15 23:14:36,303 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa28278cc/16ca99e8cc5144e482b75deced2382c8/FLAGdb5e0b27a [2023-02-15 23:14:36,317 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa28278cc/16ca99e8cc5144e482b75deced2382c8 [2023-02-15 23:14:36,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 23:14:36,321 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 23:14:36,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 23:14:36,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 23:14:36,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 23:14:36,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:14:36" (1/1) ... [2023-02-15 23:14:36,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f1e2cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:14:36, skipping insertion in model container [2023-02-15 23:14:36,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:14:36" (1/1) ... [2023-02-15 23:14:36,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 23:14:36,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 23:14:36,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 23:14:36,444 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 23:14:36,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 23:14:36,463 INFO L208 MainTranslator]: Completed translation [2023-02-15 23:14:36,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:14:36 WrapperNode [2023-02-15 23:14:36,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 23:14:36,465 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 23:14:36,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 23:14:36,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 23:14:36,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:14:36" (1/1) ... [2023-02-15 23:14:36,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:14:36" (1/1) ... [2023-02-15 23:14:36,486 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2023-02-15 23:14:36,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 23:14:36,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 23:14:36,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 23:14:36,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 23:14:36,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:14:36" (1/1) ... [2023-02-15 23:14:36,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:14:36" (1/1) ... [2023-02-15 23:14:36,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:14:36" (1/1) ... [2023-02-15 23:14:36,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:14:36" (1/1) ... [2023-02-15 23:14:36,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:14:36" (1/1) ... [2023-02-15 23:14:36,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:14:36" (1/1) ... [2023-02-15 23:14:36,500 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:14:36" (1/1) ... [2023-02-15 23:14:36,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:14:36" (1/1) ... [2023-02-15 23:14:36,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 23:14:36,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 23:14:36,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 23:14:36,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 23:14:36,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:14:36" (1/1) ... [2023-02-15 23:14:36,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:36,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:36,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:36,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-02-15 23:14:36,558 INFO L130 BoogieDeclarations]: Found specification of procedure twoWay [2023-02-15 23:14:36,559 INFO L138 BoogieDeclarations]: Found implementation of procedure twoWay [2023-02-15 23:14:36,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 23:14:36,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 23:14:36,596 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 23:14:36,598 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 23:14:36,693 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 23:14:36,697 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 23:14:36,698 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-15 23:14:36,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:14:36 BoogieIcfgContainer [2023-02-15 23:14:36,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 23:14:36,700 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-15 23:14:36,700 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-15 23:14:36,703 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-15 23:14:36,704 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 23:14:36,704 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.02 11:14:36" (1/3) ... [2023-02-15 23:14:36,704 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1de0f56f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 11:14:36, skipping insertion in model container [2023-02-15 23:14:36,705 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 23:14:36,705 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:14:36" (2/3) ... [2023-02-15 23:14:36,706 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1de0f56f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 11:14:36, skipping insertion in model container [2023-02-15 23:14:36,712 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 23:14:36,713 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:14:36" (3/3) ... [2023-02-15 23:14:36,714 INFO L332 chiAutomizerObserver]: Analyzing ICFG TwoWay.c [2023-02-15 23:14:36,750 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-15 23:14:36,751 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-15 23:14:36,751 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-15 23:14:36,751 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-15 23:14:36,751 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-15 23:14:36,751 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-15 23:14:36,751 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-15 23:14:36,751 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-15 23:14:36,761 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 23:14:36,775 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-15 23:14:36,775 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:14:36,775 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:14:36,779 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-02-15 23:14:36,779 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-15 23:14:36,780 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-15 23:14:36,780 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 23:14:36,781 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-15 23:14:36,781 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:14:36,781 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:14:36,781 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-02-15 23:14:36,782 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-15 23:14:36,787 INFO L748 eck$LassoCheckResult]: Stem: 10#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 4#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 7#L42true assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 13#L45true assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 15#L48true call main_#t~ret6#1 := twoWay(1, main_~x~0#1);< 6#$Ultimate##0true [2023-02-15 23:14:36,787 INFO L750 eck$LassoCheckResult]: Loop: 6#$Ultimate##0true ~terminate := #in~terminate;~n := #in~n; 11#L27true assume !(~n < 0);~m~0 := ~n; 12#L31true assume 0 != ~terminate;#t~post0 := ~m~0;~m~0 := #t~post0 - 1;havoc #t~post0; 5#L31-2true call #t~ret2 := twoWay(~terminate, ~m~0);< 6#$Ultimate##0true [2023-02-15 23:14:36,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:14:36,791 INFO L85 PathProgramCache]: Analyzing trace with hash 42056122, now seen corresponding path program 1 times [2023-02-15 23:14:36,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:14:36,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325768516] [2023-02-15 23:14:36,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:14:36,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:14:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:14:36,871 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:14:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:14:36,898 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:14:36,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:14:36,900 INFO L85 PathProgramCache]: Analyzing trace with hash 927614, now seen corresponding path program 1 times [2023-02-15 23:14:36,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:14:36,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584526961] [2023-02-15 23:14:36,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:14:36,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:14:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:14:36,920 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:14:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:14:36,942 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:14:36,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:14:36,944 INFO L85 PathProgramCache]: Analyzing trace with hash 322591927, now seen corresponding path program 1 times [2023-02-15 23:14:36,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:14:36,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57051423] [2023-02-15 23:14:36,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:14:36,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:14:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:14:36,961 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:14:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:14:36,985 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:14:37,104 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:14:37,105 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:14:37,105 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:14:37,105 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:14:37,105 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 23:14:37,105 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:37,106 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:14:37,106 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:14:37,106 INFO L133 ssoRankerPreferences]: Filename of dumped script: TwoWay.c_Iteration1_Loop [2023-02-15 23:14:37,106 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:14:37,106 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:14:37,132 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:37,139 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:37,141 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:37,143 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:37,146 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:37,148 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:37,154 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:37,159 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:37,162 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:37,224 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:14:37,225 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 23:14:37,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:37,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:37,243 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:37,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-02-15 23:14:37,250 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:14:37,253 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:14:37,264 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:14:37,264 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_#t~ret2=0} Honda state: {twoWay_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 23:14:37,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-02-15 23:14:37,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:37,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:37,272 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:37,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-02-15 23:14:37,275 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:14:37,275 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:14:37,282 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:14:37,283 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_~m~0=0} Honda state: {twoWay_~m~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 23:14:37,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-02-15 23:14:37,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:37,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:37,302 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:37,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-02-15 23:14:37,308 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:14:37,308 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:14:37,325 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:14:37,326 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_~terminate=0} Honda state: {twoWay_~terminate=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 23:14:37,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-02-15 23:14:37,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:37,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:37,338 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:37,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-02-15 23:14:37,342 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:14:37,342 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:14:37,350 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:14:37,351 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_#res=0} Honda state: {twoWay_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 23:14:37,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-02-15 23:14:37,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:37,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:37,359 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:37,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-02-15 23:14:37,364 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:14:37,364 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:14:37,372 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:14:37,372 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_~n=0} Honda state: {twoWay_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 23:14:37,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-02-15 23:14:37,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:37,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:37,377 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:37,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-02-15 23:14:37,379 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:14:37,379 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:14:37,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-02-15 23:14:37,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:37,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:37,398 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:37,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-02-15 23:14:37,409 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:14:37,409 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:14:37,457 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 23:14:37,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-02-15 23:14:37,461 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:14:37,461 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:14:37,461 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:14:37,461 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:14:37,461 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 23:14:37,461 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:37,461 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:14:37,461 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:14:37,461 INFO L133 ssoRankerPreferences]: Filename of dumped script: TwoWay.c_Iteration1_Loop [2023-02-15 23:14:37,461 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:14:37,461 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:14:37,463 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:37,466 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:37,470 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:37,474 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:37,482 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:37,487 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:37,494 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:37,496 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:37,498 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:37,560 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:14:37,563 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 23:14:37,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:37,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:37,566 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:37,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-02-15 23:14:37,570 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:14:37,576 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:14:37,576 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:14:37,577 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:14:37,577 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:14:37,577 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:14:37,579 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:14:37,579 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:14:37,593 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:14:37,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-02-15 23:14:37,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:37,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:37,599 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:37,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-02-15 23:14:37,610 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:14:37,617 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:14:37,617 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:14:37,617 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:14:37,617 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:14:37,617 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:14:37,618 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:14:37,618 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:14:37,629 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:14:37,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-02-15 23:14:37,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:37,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:37,638 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:37,646 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:14:37,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-02-15 23:14:37,653 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:14:37,653 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:14:37,653 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:14:37,653 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:14:37,653 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:14:37,654 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:14:37,654 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:14:37,673 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:14:37,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-02-15 23:14:37,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:37,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:37,679 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:37,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-02-15 23:14:37,683 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:14:37,688 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:14:37,689 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:14:37,689 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:14:37,689 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:14:37,689 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:14:37,689 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:14:37,689 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:14:37,698 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 23:14:37,700 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 23:14:37,700 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-15 23:14:37,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:37,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:37,745 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:37,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-02-15 23:14:37,752 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 23:14:37,752 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 23:14:37,753 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 23:14:37,753 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(twoWay_#in~n) = 2*twoWay_#in~n + 1 Supporting invariants [] [2023-02-15 23:14:37,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-02-15 23:14:37,763 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 23:14:37,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:14:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:14:37,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:14:37,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:14:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:14:37,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 23:14:37,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:14:37,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:14:37,920 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2023-02-15 23:14:37,921 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:14:38,042 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2). Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 45 states and 57 transitions. Complement of second has 16 states. [2023-02-15 23:14:38,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2023-02-15 23:14:38,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:14:38,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2023-02-15 23:14:38,053 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 5 letters. Loop has 4 letters. [2023-02-15 23:14:38,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:14:38,055 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2023-02-15 23:14:38,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:14:38,055 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 5 letters. Loop has 8 letters. [2023-02-15 23:14:38,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:14:38,056 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 57 transitions. [2023-02-15 23:14:38,065 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-15 23:14:38,068 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 23 states and 26 transitions. [2023-02-15 23:14:38,069 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2023-02-15 23:14:38,070 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2023-02-15 23:14:38,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 26 transitions. [2023-02-15 23:14:38,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:14:38,070 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-02-15 23:14:38,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 26 transitions. [2023-02-15 23:14:38,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 16. [2023-02-15 23:14:38,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:14:38,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2023-02-15 23:14:38,089 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 19 transitions. [2023-02-15 23:14:38,089 INFO L428 stractBuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2023-02-15 23:14:38,089 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-15 23:14:38,089 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 19 transitions. [2023-02-15 23:14:38,089 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-15 23:14:38,089 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:14:38,089 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:14:38,090 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:14:38,090 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-15 23:14:38,090 INFO L748 eck$LassoCheckResult]: Stem: 129#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 130#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 141#L42 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 138#L45 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 134#L48 call main_#t~ret6#1 := twoWay(1, main_~x~0#1);< 143#$Ultimate##0 ~terminate := #in~terminate;~n := #in~n; 131#L27 assume !(~n < 0);~m~0 := ~n; 133#L31 assume !(0 != ~terminate);#t~post1 := ~m~0;~m~0 := 1 + #t~post1;havoc #t~post1; 137#L31-2 [2023-02-15 23:14:38,090 INFO L750 eck$LassoCheckResult]: Loop: 137#L31-2 call #t~ret2 := twoWay(~terminate, ~m~0);< 139#$Ultimate##0 ~terminate := #in~terminate;~n := #in~n; 142#L27 assume !(~n < 0);~m~0 := ~n; 144#L31 assume 0 != ~terminate;#t~post0 := ~m~0;~m~0 := #t~post0 - 1;havoc #t~post0; 137#L31-2 [2023-02-15 23:14:38,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:14:38,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1236519797, now seen corresponding path program 1 times [2023-02-15 23:14:38,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:14:38,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274814577] [2023-02-15 23:14:38,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:14:38,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:14:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:14:38,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:14:38,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:14:38,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274814577] [2023-02-15 23:14:38,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274814577] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:14:38,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:14:38,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 23:14:38,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060567352] [2023-02-15 23:14:38,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:14:38,141 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-02-15 23:14:38,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:14:38,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1876964, now seen corresponding path program 2 times [2023-02-15 23:14:38,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:14:38,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780696536] [2023-02-15 23:14:38,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:14:38,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:14:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:14:38,151 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:14:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:14:38,156 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:14:38,255 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:14:38,255 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:14:38,255 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:14:38,255 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:14:38,255 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 23:14:38,256 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:38,256 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:14:38,256 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:14:38,256 INFO L133 ssoRankerPreferences]: Filename of dumped script: TwoWay.c_Iteration2_Loop [2023-02-15 23:14:38,256 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:14:38,256 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:14:38,262 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:38,265 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:38,267 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:38,269 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:38,271 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:38,278 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:38,328 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:14:38,328 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 23:14:38,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:38,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:38,329 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:38,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-02-15 23:14:38,333 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:14:38,333 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:14:38,355 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:14:38,355 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_#t~ret2=0} Honda state: {twoWay_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 23:14:38,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-02-15 23:14:38,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:38,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:38,365 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:38,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-02-15 23:14:38,368 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:14:38,368 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:14:38,389 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:14:38,389 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_#t~post0=0} Honda state: {twoWay_#t~post0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 23:14:38,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-02-15 23:14:38,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:38,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:38,401 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:38,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-02-15 23:14:38,404 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:14:38,404 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:14:38,430 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:14:38,430 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_#t~post1=0} Honda state: {twoWay_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 23:14:38,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-02-15 23:14:38,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:38,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:38,434 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:38,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-02-15 23:14:38,441 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:14:38,441 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:14:38,448 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:14:38,448 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {twoWay_#res=0} Honda state: {twoWay_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 23:14:38,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-02-15 23:14:38,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:38,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:38,454 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:38,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-02-15 23:14:38,465 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:14:38,465 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:14:38,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-02-15 23:14:38,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:38,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:38,509 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:38,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-02-15 23:14:38,516 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:14:38,516 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:14:46,750 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 23:14:46,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-02-15 23:14:46,755 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:14:46,755 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:14:46,755 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:14:46,755 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:14:46,755 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 23:14:46,755 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:46,756 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:14:46,756 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:14:46,756 INFO L133 ssoRankerPreferences]: Filename of dumped script: TwoWay.c_Iteration2_Loop [2023-02-15 23:14:46,756 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:14:46,756 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:14:46,757 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:46,765 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:46,767 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:46,770 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:46,771 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:46,782 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:14:46,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2023-02-15 23:14:46,848 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:14:46,848 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 23:14:46,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:46,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:46,850 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:46,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-02-15 23:14:46,857 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:14:46,870 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:14:46,870 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:14:46,870 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:14:46,870 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:14:46,870 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:14:46,871 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:14:46,871 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:14:46,884 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:14:46,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-02-15 23:14:46,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:46,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:46,891 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:46,898 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:14:46,903 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:14:46,903 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:14:46,904 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:14:46,904 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:14:46,904 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:14:46,904 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:14:46,904 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:14:46,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-02-15 23:14:46,916 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:14:46,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-02-15 23:14:46,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:46,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:46,928 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:46,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-02-15 23:14:46,932 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:14:46,937 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:14:46,938 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:14:46,938 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:14:46,938 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:14:46,938 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:14:46,939 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:14:46,939 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:14:46,955 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:14:46,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-02-15 23:14:46,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:46,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:46,959 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:46,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-02-15 23:14:46,963 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:14:46,969 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:14:46,969 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:14:46,969 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:14:46,969 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:14:46,969 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:14:46,970 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:14:46,970 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:14:46,985 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:14:46,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-02-15 23:14:46,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:46,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:46,992 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:46,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-02-15 23:14:46,995 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:14:47,001 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:14:47,001 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:14:47,001 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:14:47,001 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:14:47,001 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:14:47,005 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:14:47,005 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:14:47,021 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 23:14:47,024 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 23:14:47,024 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-15 23:14:47,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:14:47,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:14:47,028 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:14:47,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-02-15 23:14:47,032 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 23:14:47,032 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 23:14:47,032 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 23:14:47,032 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(twoWay_~m~0) = 2*twoWay_~m~0 + 1 Supporting invariants [] [2023-02-15 23:14:47,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-02-15 23:14:47,038 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 23:14:47,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:14:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:14:47,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:14:47,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:14:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:14:47,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 23:14:47,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:14:47,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:14:47,131 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2023-02-15 23:14:47,131 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 19 transitions. cyclomatic complexity: 5 Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:14:47,187 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 19 transitions. cyclomatic complexity: 5. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 26 states and 31 transitions. Complement of second has 11 states. [2023-02-15 23:14:47,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2023-02-15 23:14:47,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:14:47,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2023-02-15 23:14:47,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2023-02-15 23:14:47,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:14:47,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 12 letters. Loop has 4 letters. [2023-02-15 23:14:47,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:14:47,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 8 letters. Loop has 8 letters. [2023-02-15 23:14:47,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:14:47,191 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 31 transitions. [2023-02-15 23:14:47,193 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-15 23:14:47,195 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 25 states and 30 transitions. [2023-02-15 23:14:47,195 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2023-02-15 23:14:47,195 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2023-02-15 23:14:47,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 30 transitions. [2023-02-15 23:14:47,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:14:47,195 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 30 transitions. [2023-02-15 23:14:47,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 30 transitions. [2023-02-15 23:14:47,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2023-02-15 23:14:47,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 18 states have internal predecessors, (22), 5 states have call successors, (7), 5 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:14:47,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2023-02-15 23:14:47,202 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 29 transitions. [2023-02-15 23:14:47,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:14:47,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 23:14:47,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 23:14:47,205 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:14:47,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:14:47,219 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2023-02-15 23:14:47,219 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 13 transitions. [2023-02-15 23:14:47,220 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-15 23:14:47,221 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 0 states and 0 transitions. [2023-02-15 23:14:47,221 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-15 23:14:47,221 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-15 23:14:47,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-15 23:14:47,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 23:14:47,221 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 23:14:47,221 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 23:14:47,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 23:14:47,223 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 23:14:47,223 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-15 23:14:47,223 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-02-15 23:14:47,223 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-15 23:14:47,223 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-02-15 23:14:47,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.02 11:14:47 BoogieIcfgContainer [2023-02-15 23:14:47,232 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-15 23:14:47,233 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 23:14:47,233 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 23:14:47,233 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 23:14:47,234 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:14:36" (3/4) ... [2023-02-15 23:14:47,236 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-15 23:14:47,236 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 23:14:47,238 INFO L158 Benchmark]: Toolchain (without parser) took 10915.83ms. Allocated memory was 107.0MB in the beginning and 132.1MB in the end (delta: 25.2MB). Free memory was 64.9MB in the beginning and 77.0MB in the end (delta: -12.1MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2023-02-15 23:14:47,238 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 107.0MB. Free memory is still 78.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 23:14:47,238 INFO L158 Benchmark]: CACSL2BoogieTranslator took 140.81ms. Allocated memory is still 107.0MB. Free memory was 64.9MB in the beginning and 55.7MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 23:14:47,239 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.60ms. Allocated memory is still 107.0MB. Free memory was 55.5MB in the beginning and 54.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 23:14:47,239 INFO L158 Benchmark]: Boogie Preprocessor took 13.00ms. Allocated memory is still 107.0MB. Free memory was 54.2MB in the beginning and 53.3MB in the end (delta: 928.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 23:14:47,244 INFO L158 Benchmark]: RCFGBuilder took 196.73ms. Allocated memory was 107.0MB in the beginning and 132.1MB in the end (delta: 25.2MB). Free memory was 53.3MB in the beginning and 102.2MB in the end (delta: -49.0MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2023-02-15 23:14:47,244 INFO L158 Benchmark]: BuchiAutomizer took 10532.22ms. Allocated memory is still 132.1MB. Free memory was 102.2MB in the beginning and 77.0MB in the end (delta: 25.3MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2023-02-15 23:14:47,245 INFO L158 Benchmark]: Witness Printer took 3.34ms. Allocated memory is still 132.1MB. Free memory is still 77.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 23:14:47,246 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 107.0MB. Free memory is still 78.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 140.81ms. Allocated memory is still 107.0MB. Free memory was 64.9MB in the beginning and 55.7MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.60ms. Allocated memory is still 107.0MB. Free memory was 55.5MB in the beginning and 54.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.00ms. Allocated memory is still 107.0MB. Free memory was 54.2MB in the beginning and 53.3MB in the end (delta: 928.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 196.73ms. Allocated memory was 107.0MB in the beginning and 132.1MB in the end (delta: 25.2MB). Free memory was 53.3MB in the beginning and 102.2MB in the end (delta: -49.0MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * BuchiAutomizer took 10532.22ms. Allocated memory is still 132.1MB. Free memory was 102.2MB in the beginning and 77.0MB in the end (delta: 25.3MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. * Witness Printer took 3.34ms. Allocated memory is still 132.1MB. Free memory is still 77.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 2 * \old(n) + 1 and consists of 5 locations. One deterministic module has affine ranking function 2 * m + 1 and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 10.4s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 9.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 8 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, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 57 IncrementalHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 30 mSDtfsCounter, 57 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax100 hnf100 lsp63 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf92 smp100 dnf130 smp100 tf106 neg93 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 9 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 8.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-02-15 23:14:47,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-02-15 23:14:47,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE