./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3a877d22 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/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.BOUNDED-10.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash d6dd7af8c681da9a32811252853803422c95f4df19741eb4bc23f2d0511fe647 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 17:22:07,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 17:22:07,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 17:22:07,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 17:22:07,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 17:22:07,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 17:22:07,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 17:22:07,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 17:22:07,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 17:22:07,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 17:22:07,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 17:22:07,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 17:22:07,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 17:22:07,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 17:22:07,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 17:22:07,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 17:22:07,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 17:22:07,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 17:22:07,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 17:22:07,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 17:22:07,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 17:22:07,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 17:22:07,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 17:22:07,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 17:22:07,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 17:22:07,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 17:22:07,822 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 17:22:07,823 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 17:22:07,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 17:22:07,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 17:22:07,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 17:22:07,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 17:22:07,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 17:22:07,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 17:22:07,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 17:22:07,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 17:22:07,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 17:22:07,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 17:22:07,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 17:22:07,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 17:22:07,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 17:22:07,830 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-15 17:22:07,860 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 17:22:07,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 17:22:07,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 17:22:07,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 17:22:07,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 17:22:07,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 17:22:07,862 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 17:22:07,862 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-15 17:22:07,862 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-15 17:22:07,862 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-15 17:22:07,863 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-15 17:22:07,863 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-15 17:22:07,864 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-15 17:22:07,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 17:22:07,864 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 17:22:07,864 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 17:22:07,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 17:22:07,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 17:22:07,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 17:22:07,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-15 17:22:07,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-15 17:22:07,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-15 17:22:07,865 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 17:22:07,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 17:22:07,865 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-15 17:22:07,865 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 17:22:07,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-15 17:22:07,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 17:22:07,866 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 17:22:07,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 17:22:07,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 17:22:07,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 17:22:07,867 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-15 17:22:07,867 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6dd7af8c681da9a32811252853803422c95f4df19741eb4bc23f2d0511fe647 [2021-12-15 17:22:08,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 17:22:08,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 17:22:08,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 17:22:08,100 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 17:22:08,101 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 17:22:08,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.BOUNDED-10.pals.c [2021-12-15 17:22:08,157 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de056afdb/bfd26d71f4284602aceb69668a594224/FLAG853e7a6e3 [2021-12-15 17:22:08,561 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 17:22:08,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.BOUNDED-10.pals.c [2021-12-15 17:22:08,573 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de056afdb/bfd26d71f4284602aceb69668a594224/FLAG853e7a6e3 [2021-12-15 17:22:08,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de056afdb/bfd26d71f4284602aceb69668a594224 [2021-12-15 17:22:08,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 17:22:08,588 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 17:22:08,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 17:22:08,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 17:22:08,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 17:22:08,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:22:08" (1/1) ... [2021-12-15 17:22:08,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b00a60f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:08, skipping insertion in model container [2021-12-15 17:22:08,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:22:08" (1/1) ... [2021-12-15 17:22:08,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 17:22:08,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 17:22:08,791 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.BOUNDED-10.pals.c[11956,11969] [2021-12-15 17:22:08,796 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:22:08,802 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 17:22:08,855 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.BOUNDED-10.pals.c[11956,11969] [2021-12-15 17:22:08,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:22:08,869 INFO L208 MainTranslator]: Completed translation [2021-12-15 17:22:08,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:08 WrapperNode [2021-12-15 17:22:08,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 17:22:08,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 17:22:08,870 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 17:22:08,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 17:22:08,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:08" (1/1) ... [2021-12-15 17:22:08,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:08" (1/1) ... [2021-12-15 17:22:08,948 INFO L137 Inliner]: procedures = 27, calls = 46, calls flagged for inlining = 41, calls inlined = 84, statements flattened = 1572 [2021-12-15 17:22:08,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 17:22:08,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 17:22:08,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 17:22:08,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 17:22:08,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:08" (1/1) ... [2021-12-15 17:22:08,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:08" (1/1) ... [2021-12-15 17:22:08,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:08" (1/1) ... [2021-12-15 17:22:08,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:08" (1/1) ... [2021-12-15 17:22:08,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:08" (1/1) ... [2021-12-15 17:22:09,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:08" (1/1) ... [2021-12-15 17:22:09,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:08" (1/1) ... [2021-12-15 17:22:09,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 17:22:09,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 17:22:09,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 17:22:09,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 17:22:09,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:08" (1/1) ... [2021-12-15 17:22:09,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:22:09,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:22:09,080 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-15 17:22:09,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-15 17:22:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 17:22:09,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 17:22:09,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 17:22:09,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 17:22:09,188 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 17:22:09,189 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 17:22:09,946 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 17:22:09,954 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 17:22:09,954 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-15 17:22:09,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:22:09 BoogieIcfgContainer [2021-12-15 17:22:09,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 17:22:09,957 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-15 17:22:09,957 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-15 17:22:09,959 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-15 17:22:09,960 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:22:09,960 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.12 05:22:08" (1/3) ... [2021-12-15 17:22:09,960 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@793b939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:22:09, skipping insertion in model container [2021-12-15 17:22:09,961 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:22:09,961 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:08" (2/3) ... [2021-12-15 17:22:09,961 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@793b939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:22:09, skipping insertion in model container [2021-12-15 17:22:09,961 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:22:09,961 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:22:09" (3/3) ... [2021-12-15 17:22:09,962 INFO L388 chiAutomizerObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.1.ufo.BOUNDED-10.pals.c [2021-12-15 17:22:09,990 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-15 17:22:09,991 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-15 17:22:09,991 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-15 17:22:09,991 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-15 17:22:09,991 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-15 17:22:09,991 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-15 17:22:09,991 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-15 17:22:09,991 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-15 17:22:10,013 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 490 states, 489 states have (on average 1.7116564417177915) internal successors, (837), 489 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 17:22:10,045 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 469 [2021-12-15 17:22:10,045 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:22:10,045 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:22:10,051 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-15 17:22:10,051 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-12-15 17:22:10,051 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-15 17:22:10,053 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 490 states, 489 states have (on average 1.7116564417177915) internal successors, (837), 489 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 17:22:10,061 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 469 [2021-12-15 17:22:10,061 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:22:10,062 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:22:10,062 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-15 17:22:10,062 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-12-15 17:22:10,067 INFO L791 eck$LassoCheckResult]: Stem: 484#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(51, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~g1v~0 := 0;~g1v_old~0 := 0;~g1v_new~0 := 0;~g2v~0 := 0;~g2v_old~0 := 0;~g2v_new~0 := 0;~g3v~0 := 0;~g3v_old~0 := 0;~g3v_new~0 := 0;~gate1Failed~0 := 0;~gate2Failed~0 := 0;~gate3Failed~0 := 0;~VALUE1~0 := 0;~VALUE2~0 := 0;~VALUE3~0 := 0;~gate1Failed_History_0~0 := 0;~gate1Failed_History_1~0 := 0;~gate1Failed_History_2~0 := 0;~gate2Failed_History_0~0 := 0;~gate2Failed_History_1~0 := 0;~gate2Failed_History_2~0 := 0;~gate3Failed_History_0~0 := 0;~gate3Failed_History_1~0 := 0;~gate3Failed_History_2~0 := 0;~votedValue_History_0~0 := 0;~votedValue_History_1~0 := 0;~votedValue_History_2~0 := 0; 408#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet43#1, main_#t~nondet44#1, main_#t~nondet45#1, main_#t~nondet46#1, main_#t~nondet47#1, main_#t~nondet48#1, main_#t~nondet49#1, main_#t~nondet50#1, main_#t~nondet51#1, main_#t~nondet52#1, main_#t~nondet53#1, main_#t~nondet54#1, main_#t~nondet55#1, main_#t~nondet56#1, main_#t~nondet57#1, main_#t~nondet58#1, main_#t~nondet59#1, main_#t~nondet60#1, main_#t~ret61#1, main_#t~ret62#1, main_#t~post63#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~gate1Failed~0 := main_#t~nondet43#1;havoc main_#t~nondet43#1;~gate2Failed~0 := main_#t~nondet44#1;havoc main_#t~nondet44#1;~gate3Failed~0 := main_#t~nondet45#1;havoc main_#t~nondet45#1;~VALUE1~0 := main_#t~nondet46#1;havoc main_#t~nondet46#1;~VALUE2~0 := main_#t~nondet47#1;havoc main_#t~nondet47#1;~VALUE3~0 := main_#t~nondet48#1;havoc main_#t~nondet48#1;~gate1Failed_History_0~0 := main_#t~nondet49#1;havoc main_#t~nondet49#1;~gate1Failed_History_1~0 := main_#t~nondet50#1;havoc main_#t~nondet50#1;~gate1Failed_History_2~0 := main_#t~nondet51#1;havoc main_#t~nondet51#1;~gate2Failed_History_0~0 := main_#t~nondet52#1;havoc main_#t~nondet52#1;~gate2Failed_History_1~0 := main_#t~nondet53#1;havoc main_#t~nondet53#1;~gate2Failed_History_2~0 := main_#t~nondet54#1;havoc main_#t~nondet54#1;~gate3Failed_History_0~0 := main_#t~nondet55#1;havoc main_#t~nondet55#1;~gate3Failed_History_1~0 := main_#t~nondet56#1;havoc main_#t~nondet56#1;~gate3Failed_History_2~0 := main_#t~nondet57#1;havoc main_#t~nondet57#1;~votedValue_History_0~0 := main_#t~nondet58#1;havoc main_#t~nondet58#1;~votedValue_History_1~0 := main_#t~nondet59#1;havoc main_#t~nondet59#1;~votedValue_History_2~0 := main_#t~nondet60#1;havoc main_#t~nondet60#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_#t~ret9#1, init_#t~ret10#1, init_#t~ret11#1, init_#t~ret12#1, init_~tmp~1#1, init_~tmp___0~1#1, init_~tmp___1~1#1, init_~tmp___2~1#1;havoc init_~tmp~1#1;havoc init_~tmp___0~1#1;havoc init_~tmp___1~1#1;havoc init_~tmp___2~1#1;assume { :begin_inline_add_history_type } true;add_history_type_#in~history_id#1 := 0;havoc add_history_type_#res#1;havoc add_history_type_#t~ret4#1, add_history_type_#t~ret5#1, add_history_type_#t~ret6#1, add_history_type_#t~ret7#1, add_history_type_#t~post8#1, add_history_type_~history_id#1, add_history_type_~ini_bool~0#1, add_history_type_~ini_int~0#1, add_history_type_~var~0#1, add_history_type_~tmp~0#1, add_history_type_~tmp___0~0#1, add_history_type_~tmp___1~0#1, add_history_type_~tmp___2~0#1;add_history_type_~history_id#1 := add_history_type_#in~history_id#1;havoc add_history_type_~ini_bool~0#1;havoc add_history_type_~ini_int~0#1;havoc add_history_type_~var~0#1;havoc add_history_type_~tmp~0#1;havoc add_history_type_~tmp___0~0#1;havoc add_history_type_~tmp___1~0#1;havoc add_history_type_~tmp___2~0#1;add_history_type_~ini_bool~0#1 := 0;add_history_type_~ini_int~0#1 := -2;add_history_type_~var~0#1 := 0; 362#L71-2true [2021-12-15 17:22:10,068 INFO L793 eck$LassoCheckResult]: Loop: 362#L71-2true assume !!(add_history_type_~var~0#1 < 3); 297#L72true assume !(0 == add_history_type_~history_id#1); 264#L78true assume !(1 == add_history_type_~history_id#1); 351#L84true assume !(2 == add_history_type_~history_id#1); 355#L90true assume !(3 == add_history_type_~history_id#1); 164#L90-2true add_history_type_#t~post8#1 := add_history_type_~var~0#1;add_history_type_~var~0#1 := 1 + add_history_type_#t~post8#1;havoc add_history_type_#t~post8#1; 362#L71-2true [2021-12-15 17:22:10,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:10,071 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-15 17:22:10,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:10,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697917974] [2021-12-15 17:22:10,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:10,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:22:10,161 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:22:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:22:10,208 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:22:10,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:10,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1278004263, now seen corresponding path program 1 times [2021-12-15 17:22:10,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:10,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614699975] [2021-12-15 17:22:10,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:10,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:22:10,222 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:22:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:22:10,233 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:22:10,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:10,234 INFO L85 PathProgramCache]: Analyzing trace with hash 358053481, now seen corresponding path program 1 times [2021-12-15 17:22:10,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:10,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491610065] [2021-12-15 17:22:10,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:10,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:22:10,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:22:10,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:22:10,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491610065] [2021-12-15 17:22:10,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491610065] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:22:10,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:22:10,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 17:22:10,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324423663] [2021-12-15 17:22:10,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:22:10,368 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.getTrivialTransFormula(TransFormulaBuilder.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.synthesize(LassoCheck.java:548) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkLoopTermination(LassoCheck.java:944) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:834) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:252) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:397) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 17:22:10,372 INFO L158 Benchmark]: Toolchain (without parser) took 1783.10ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 48.3MB in the beginning and 65.2MB in the end (delta: -16.9MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2021-12-15 17:22:10,373 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 88.1MB. Free memory was 65.1MB in the beginning and 65.0MB in the end (delta: 46.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 17:22:10,374 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.70ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 48.0MB in the beginning and 78.0MB in the end (delta: -30.0MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2021-12-15 17:22:10,374 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.40ms. Allocated memory is still 107.0MB. Free memory was 78.0MB in the beginning and 72.3MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 17:22:10,376 INFO L158 Benchmark]: Boogie Preprocessor took 72.51ms. Allocated memory is still 107.0MB. Free memory was 72.3MB in the beginning and 67.5MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 17:22:10,377 INFO L158 Benchmark]: RCFGBuilder took 933.89ms. Allocated memory is still 107.0MB. Free memory was 67.5MB in the beginning and 58.2MB in the end (delta: 9.2MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2021-12-15 17:22:10,377 INFO L158 Benchmark]: BuchiAutomizer took 413.83ms. Allocated memory is still 107.0MB. Free memory was 58.2MB in the beginning and 65.2MB in the end (delta: -6.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 17:22:10,382 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 88.1MB. Free memory was 65.1MB in the beginning and 65.0MB in the end (delta: 46.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 280.70ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 48.0MB in the beginning and 78.0MB in the end (delta: -30.0MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.40ms. Allocated memory is still 107.0MB. Free memory was 78.0MB in the beginning and 72.3MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.51ms. Allocated memory is still 107.0MB. Free memory was 72.3MB in the beginning and 67.5MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 933.89ms. Allocated memory is still 107.0MB. Free memory was 67.5MB in the beginning and 58.2MB in the end (delta: 9.2MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * BuchiAutomizer took 413.83ms. Allocated memory is still 107.0MB. Free memory was 58.2MB in the beginning and 65.2MB in the end (delta: -6.9MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 17:22:10,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable